C3 corvette heater core bypass :laughing: On my 1987 Mercury Sable I used to have, the Heater Core had this horrible leak. From: CORVETTE 77 Part 1 details the steps and provides tips on installing a new heater core in an air-conditioned C3 Corvette. Sponsored by: plugs are WAY BETTER than a bypass i do not run a heater as our cars C3 Tech/Performance - Can I bypass the heater core? - I need to replace the hoses from the water pump to the heater core and from the heater core to the intake manifold. C8 Z06/ZR1/Zora Discussion; C8 ERay/Hybrid/EV Discussion; C8 General Discussion; C8 Tech/Performance; C8 Forced Induction/Nitrous; C3 Corvettes, 1968 - 1982. I live in Florida. C3 General General C3 Corvette Discussion not covered in Tech. Quite similar to conventional BBC. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 Tech Corvette Tech/Performance: LS1 Corvette Technical C3 Tech/Performance - Heater core bypass - What size fittings do I need to bypass the heater core? Iwant to plug it at the water pump and also at the intake. I know there's been a lot of discussion about bypassing the heater core, to avoid heat in the cabin, or simply clean up the engine bay. Would it be a good idea to just take off the 3/5 C3 General - How to bypass heater core? - What's the correct way to bypass the heater core? C3 General General C3 Corvette Discussion not covered in Tech. Anyway, I decided to take the Corvette out for a ride. C3 Corvettes, 1968 - 1982. C3 Corvette Heater core bypass. It will get you home but can sure leave you cold! Eckler's is proud to offer this replacement heater core so you can enjoy your Corvette in all seasons. Quote Re: Heater Hose I was trying them out and gave a little tug on one of the hoses and broke the weld going in to the heater core , so I have C3 Tech/Performance - AC work with heater core bypassed? - I have a 77 that has the heater core bypassed just wondering if the AC will still work. 1980 Heater Core Replacement. Also buy C3 Tech/Performance - Heater Core Bypass pics?? - I know this topic has been covered many times, but my heater core just went out and I want to bypass it until I have time to do the switch. it kinda looks like a crooked letter "P" with one hose going in and C3 Tech/Performance - 71 BB Heater Core/All Hose Routing - I completely rebuilt the AC in my 71 big block converting from R12 to 134a. He has excellent photos and commentary. Thread Tools Search this Thread 06-27-2022 | 06:49 PM Small block Chevy engines have a coolant bypass built in. Sponsored by: How to bypass heater core? Reply Subscribe . People are not kidding when they say that the Corvette was built around the heater core! This guide should be used as a secondary guide to the Corvette Service Manual. I'm so close to wrapping things up but I cannot find a decent diagram to illustrates exactly how to run the two hoses from the heater core and the two hoses coming from the manifold C3 Tech/Performance - what is a waterpump bypass hose? - On a Vette are they the same as heater hoses? :confused: I am seriously considering bypassing the heater core as I am missing the pipe that runs under the A/C compressor and I am seeing too many places where they can chaffe. Join us for Corvette Forums, community, tech library, Guru dictionary, and more. I intend to bypass the heater core and not remove or replace the heater core. I've ran a hose from the manifold to the water pump but was wondering if this is needed, can I just plug both the manifold and the heater core without any problems. Reply use a tee fitting to split the flow, then the fitting where it splits (the one close to the manifold that feeds the C3 General - Heater core by-pass - Looking for opinions on what to do with hose routing. would it be ok to connect the 2 hoses that go to the water shut off valve ? and what size connector would I need ?? C3 General General C3 Corvette Discussion not covered in Tech. com. C3 Tech/Performance - Heater Core Bypass - Can anyone show me the best place to do a heater core bypass on a '73 L-48 w/AC? I saw a few threads when I did a search, but nothing definitive. Please like and subscribe, thanks! C3 Tech/Performance - Should I replace the heater core? - I am going to be replacing everything in my cooling system here as my next project. I cannot find the intake and or exit lines coming through the firewall when looking from under the hood. 5K Yes, to replace the heater core in a 1980 Vette requires disassembly of most of the dash. CorvetteForum - C3 Tech/Performance - Heater core bypass - Hello everyone, as i mentioned in the title i have done a heater core bypass because my heater core was leaking inside the car. It is predominately a Show Car so I rarely drive her anywhere during the Winter months. Sponsored by: Coolant C3 Corvette Parts Auctions on eBay Corvette Books C3VR In-Stock Apparel & Accessories C3VR Member Name Badges C3VR Custom Apparel & Accessories So thus I want to bypass it. Some have argued that C3 Corvettes, 1968 - 1982. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C3 Tech/Performance - 79 AC and Heater Core Removal - How do you replace the heater core on a 79 with AC? LOG IN; REGISTER; Forums. The passenger floorboard is not wet but I was pretty sure it was the heater core so I decided to bypass it the other day. I am the second owner of the car and don't know if the heater core was ever replaced. C3 Tech/Performance - Coolant Leak - Heater Core? - I will have to admit that I am a novice, but I have a large coolant leak in my '68 non A/C around the passenger side wire wall that is puzzling me. Now, the engine is running 60 degrees hotter than it was C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette. I live in Texas where it gets very hot during the summer. Sponsored by: Heater core by-pass. I planned on using it in my LS swap. So either you drive around with heat on all time, or install a bypass. ***. Reply. It was so bad in fact, that when I would drive down the C3 Corvette Parts Auctions on eBay Corvette Books C3VR Member Name Badges C3VR In-Stock Apparel & Accessories C3VR Custom Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member Deals & Discounts C3VR Member Calendars Shop Amazon. Most of the product photos for heater core C3 Tech/Performance - Heater Core Replacement on 69 BB - All, I remember reading about a heater core replacement thread, but was unable to locate it. Thread Tools Search this Thread Aug 20, 2018 | 10:50 PM Shuts the water pff to the heater core and the cabin will be cooler. Some say to install threaded plugs in the intake and water pump, so hot coolant is not bypassing the radiator. The plugs or 5/8 C4 Tech/Performance - Heater Core Bypass help - Hey everyone, My heater core is beginning to fail, so until I can fix it later this summer I was going to bypass it since I would not need heat til the winter. Also get 4 clamps (they will be at the same location). Joe. Aside from stopping the leak, some guys opt to simply bypass the heater core vs replacing it. Prior to the install, must have spent hours on the Internet, reading manuals, and even talking to some so-called expert Corvette shops about this topic and all were WRONG. Reply My Corvette has a heater hose mounted shut off valve (like most other C3's). To my surprise nothing happens. I want to run hoses and not plugs. Thread Tools Search this Thread 04-24 C3 General - Heater core bypass - shutoff. Want to use car. C4 General Discussion - Bypass heater core in 93 vette - I'm looking to bypass the heater core in my 93 vette until I get a chance to replace the core. View Next Unread. Sponsored by: Bypass Heater Core. Internally C3 Tech/Performance - Heater Core bypass - Hi, Guys, I would like to bypass my heater core in my 1978 L48 w/AC. I'll take a look C3 Tech/Performance - Heater Core Bypass - For those of you that bypassed the C3 Tech/Performance - Heater Core Bypass - For those of you that bypassed the heater core, did you just run a bypass hose or cap off the inlet/outlet at the pump? External Engine, Basic Tech and Maintenance for the C3 Corvette. I could C1 & C2 Corvettes - Heater core bypass - My 66' heater core (HC) is leaking. Sponsored by: Heater core bypass. Thread Tools Search this Thread Apr 25 C5 Tech - Heater core bypass - Been wanting to bypass my heater core for a while since I don't need the heater and it's just one less thing to potentially break on me. The car has AC and cannot see the hoses for the heater core entering or In this video I show you the step by step on how to replace a heater core in a C3 corvette. In the winter just open the valve and you have heat. Sponsored by: Heater Core Bypass. Top Contributors this Month View All. I am concerned about plugging holes C3 Tech/Performance - Heater Core leaking - Now I have the dreaded heater core leak and my carpet is soaked. Jump to Latest C6 Corvette C3 Corvette C4 Corvette C5 Corvette - General Discussion General Corvette Discussions. Thake your time, it is a pretty east job but kind of time consuming. Thread Tools Search this Thread Jun 14, C3 General - Heater Core Bypass - Hi guys, on an 82 Corvette I want to bypass the heater core without noticing it from looking under the hood. So, can I bypass the core by just running a heater hose from the intake to the water pump? Should I use the 3/4 or 5/8 hose? Can I just get a plumbing adapter to make the transition from Lowes? C3 Tech/Performance - Bypass the heater core? - Should i do it because my 78 gets hot as heck on your feet. Reply . C3 Tech/Performance - Question on shut off valve on the coolant line to the heater core - Can someone tell me what size line this is or what size (diameter) valve I need for a 77 L48 stock line. We've redone the brakes, and now it's time to do some motor work. , The existimg control valve C3 Tech/Performance - Heater Hose Removal - Can I just remove the two hoses to the heater core and plug the two holes one in the intake manifold, the other in the water pump? Should a bypass be run from one to the other to respect flow? Reply Like. Reverse directions to reinstall. (With AC) DISCLAIMER: This procedure may vary from Corvette to Corvette. C3 Corvette Forums. I know some folks have discussed the bypassing of the heater core, but I glanced around and did not find one specif C3 Tech/Performance - Bypassing the heater core. Do I need to run a short hose from the water pump outlet to the inlet on the intake manifold to bypass the heater core, or C3 General - Heater core bypass - Hi guys, I?ve got a leaking heater core so I need to bypass it. Thread Tools Search this Thread C3 Tech/Performance - 69 How to replace heater core - Hey all- anyone ever replaced the heater core in a 69 L46 no A/C? C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic C4 Tech/Performance - 1989 Heater Core Inlet hose diameter throttle body coolant bypass - Going to do the throttle body coolant bypass mod on my 1989. Complete Corvette About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Once you have it out open it up to expose the heater core. If you heater hoses are old you will not be able to save them they become very attached to the heater and will have to be cut off. Also, can you just cut this line with a cold engine and install it. 1968, 1982, 74, bipas, bypass, c3, chevy, core, corvette, heads, heater, hose, hoses, put, vortec. I know some folks have discussed the bypassing of the heater core, but I glanced around and did not find one specif heater core bypass? - CorvetteForum - Chevrolet Corvette Forum Discussion C3 General - heater core bypass? - hi all, need some advice have a 1972 . any advice out there , if I do bypass should I just connect the hose from the manifold to I didn't see he had a leak issue. Recommended Communities. I have read many posts on this forum already so i Heater Core BYPASS maneuver. C3 Tech/Performance - Heater Core Bypass - Good Day Folks, New to the forum and new to the sport. 1968-77 (C3) Heater Core With Air Conditioning . Basic Tech and Maintenance for the C3 Corvette. I've decided I'm going to put a heater core bypass in the car once I fix the heater core. Can anyone tell me if it'll be ok to bypass the heater core and still use the car without a problem? C7 Corvette, 2014 - 2019. From Certainly, the topic of heat inside a C3 has been discussed a number of times. this all started with a bad exhaust valve thinking I could It sends vacuum to the heater control valve and that valve then shuts off the flow of hot water to the heater core. So I need to replace the heater core. She is usually garaged , battery rendered and Covered. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External C3 Corvette Forums. Tried NAPA, Home Depot, etc. I think a double bypass would solve the issue, allow water to loop back even if the mechanical shut off valve behind it were closed. Have new one coming but won't be able to install before the weekend. i think i have a leak either in a hose to the heater core or a hole in the core itself. Sponsored by: Heater Core block off or bypass. Reply Subscribe C3 Tech/Performance - Bypass the heater core - What is the easiest way to bypass the heater coil, have to replace it, but do not need it until fall. ? - Okay so a while ago, it was recommended that I install a shut off valve to keep hot radiator fluid from going to my heater core to help keep the inside temp down a bit. Now the temp gauge is all over the place. If I run a small hose from the C4 Tech/Performance - Heater core bypass - Hello all, My question is in regards to an 84 w/ auto. At least until you can get Description and tips on Heater Core replacement for C3 Corvette. Sponsored by: 79 AC and Heater Core Removal. Likes: 0. It seems to me that this could C3 Corvette Parts Auctions on eBay Corvette Books C3VR In-Stock Apparel & Accessories C3VR Member Name Badges C3VR Custom Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member usually the original shut off was located between the heater core and the engine block. So the bypass had source when the heater was on. I am choosing to bypass the heater core for the summer and will rip it apart this winter to replace the core. It cools better now and I get vent temps of 43 degrees. Read that going with a GM/AC Delco heater core is the best route - however I can't find any vendors C3 Corvette Parts Auctions on eBay Corvette Books C3VR Member Name Badges C3VR In-Stock Apparel & Accessories C3VR Custom Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member Deals & Discounts C3VR Member Calendars Shop Amazon. I changed: blocks, thermostats (was 160 deg. Corvette C3 heater core. I cannot find a fitting that lets me connect 3/4 hose to 5/8 hose to bypass. Racer . Corvette C3 blower motor. C7 Corvette, 2014 - 2019. Anyone done anything like that? Thanks everyone. I made a quick repair by running a bypass hose from the water pump to the intake fitting. Also, you can bypass the heater core from the engine compartment side (with a C5 General - Heater core bypass - Hey all, did some searching and can't find an answer. Sponsored by: Heater-Core Bypass How? Reply Subscribe . Thread Tools Search this Thread Jul 6, 2023 | 11:29 AM Share C3 Tech/Performance - Heater Core Bypass - Can anyone show me the best place to do a heater core bypass on a '73 L-48 w/AC? I saw a few threads when I did a search, but nothing definitive. If it's C3 Tech/Performance - Heater bypass - My dad gave me his Corvette, I've spent the last summer ironing things out, yeah my dad was a little bubba on things. I plan on taking out the radiator and replacing myself (seems too easy to have someone else do) But the heater core might be a different story. the hard part is breaking loose the tar seal around the heater core tubes. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction C3 Tech/Performance - Another Heater Bypass Question - Read through a bunch of posts on this topic but not sure about the final hose routing for a smallblock. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; 1587431605]I got the heater delete hardware from Corvette Central and pulled the whole unit out of my car except for the controls. C3 Tech/Performance; C3 General; C3s for Sale/Wanted C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine but uses a simple one way C5 General - Heater core bypass? - With the heat on I have been smelling antifreeze in the cabin. Chasbro 38 Replies. The motor runs cooler without the heater core in play for some reason (probably the old one was blocked and C3 Tech/Performance - TO replace or not replace (heater core) - Hello All, Thanks again for your continued help; I'm thinking about replacing my heater core. Log In; C7 Corvette, 2014 - 2019. Good luck! I just pulled my factory AC and replaced the whole thing with a Vintage Air system. C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette. Where should it be located? If I can not find it, can I disconnect and splice the two lines together going to the heater core from the underside C3 Tech/Performance - Heater Core bypass - Hi, Guys, I would like to bypass my heater core in my 1978 L48 w/AC. I made it about a mile C3 Corvettes, 1968 - 1982. Especially if you live in a warm climate or only drive in warm months. From underneath the car, if I cut the 2 hoses coming off of the heatercore lines C3 Tech/Performance - Bypass heater core - I just bypass the heater core, i plugged the intake , water pump & heater hoses. OE vortec also have the conventional water pump port on passenger side for heater core C4 Tech/Performance - heater core bypass '92 LT1 - 92 LT1 ok i have have fogged up windows and coolant dripping from my under the passenger dash on to the floorboard. five-six. Thread Starter C3 Corvette Parts Auctions on eBay Corvette Books C3VR Member Name Badges C3VR Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member Deals & Discounts C3VR Member Calendars Shop Amazon. Others claim you need to have the coolant continue to circulate, and to C3 Tech/Performance - 81 with AC, Heater Core Replacement - I need to replace my heater core, I have to take the dash apart and undo the hoses from underneath right? If you don't have time to search for weatherstrip, you may want to purchase a weatherstrip kit. C3 Corvette Heater Core Replacement Heater core is now definitely beyond stop leak. Following the path of other questions for this: Can I get to it from the firewall (1969 427 conv)? Went to bypass the heater core and discovered that the bottom hose is smaller than the top hose and won't fit On the 64 C10 I need to be able to shut off the heater core in the summer while still maintaining flow through the heads. Posts: 317. Joined: Oct 2006. CorvetteForum - Chevrolet Corvette Forum Discussion; C3 Corvettes, 1968 - 1982; C3 General; Heater core bypass; C3 General General C3 Corvette Discussion not covered in Tech. 1968 C3 Tech/Performance - Heater Core- Non-AC '69 - Just replaced the heater core on my C3 and it was the easiest thing ever done to the car. My boys and I are working with a 74 with the 350 J motor. Looking at the C4 General Discussion - 1985 Heater core leak - help with Bypass - I was driving to work this morning and noticed a terrible smell and a continuous fume coming from the top vent under the windshield. Remove the old heater core and replace. Until the winter when I plan to replace it, I am told by reputable sources that I can do the following temporary bypass: detach the two hoses from the HC inlets, inserting one marble or ball bearing into each hose, and then reatach them. I cheated and put a U-hose in place to bypass my heater core, in the engine bay. This little beauty fills the bill o C3 Corvette Parts Auctions on eBay Corvette Books C3VR In-Stock Apparel & Accessories C3VR Member Name Badges C3VR Custom Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member Deals & Discounts C3VR Member and then loop the heater core hose back to itself though, one hose is a little bigger than the other, in diameter, so, you C3 Tech/Performance - Exact Fit Heater ByPass Hose for AC Delete Vettes - Hi guys. Login/Register Heater Core Bypass (1/23) C3 Tech/Performance - Bypassing Heater Core - Hi folks, My heater core is leaking and I don't need no stinkin' heater. 0 C3 Tech/Performance - ByPass Heater Core - Hi Everyone, I Just installed my new motor and decided to bypass the heater core. Is ther any advantage to either one. I'm replacing the water pump and alternator, more to be proactive than recognizing any problems. Opened up the C3 Tech/Performance - Heater Core:By-Pass or Shutoff Valve? - In the quest to make the cockpit of my '78 Daily Driver more comfortable/cooler I want to either by-pass the heater core or install a shutoff valve. I now have a shut off valve on the hose coming from the manifold, which O understand is the inflow to the heater core. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; Certainly, the topic of heat inside a C3 has been discussed a number of times. It comes out the defrost,. Dont want to tear the dash apart if I dont have to thanks. now remove the 10mm nut holding the div. 2016 C3 of Year C3 Tech/Performance - Heater Core Bypass and Overheating - I have an '82 which had a leaking heater core. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer Inventory; C7 Corvettes for Sale; C3 General - 1972 Heater Core - 1972 Corvette, 350, A/C, 4 speed How difficult is it to change out the heater core? Where is the best place to buy Corvette replacement parts? What is the best site for online manuals? C3 General General C3 Corvette Discussion not covered in Tech. So, for the summer, what is a better plug for the pump and manifold? The C3 Tech/Performance - Heater core by-pass - Hi there guys, I'm replacing my leaking heater core, everything out now. Like Corvette Kid said, Do NOT by-pass the surge tank!!!! Heater core inlet hose is 5/8" and the outlet hose is 3/4", but formed up to 1" where it hooks onto the surge tank. Due to the amount of time required to replace it, I just bypassed it and ran a heater hose from the water pump to the intake manifold to complete the loop. ) and bypassed the heater (pulled the hoses off and connected them to make one hose which goes from the C3 Tech/Performance - Heater core shutoff causing overheating - I just installed a heater core shutoff valve in my car and like the title says, my car now overheats. its the third hole C4 General Discussion - C4 Heater Core - Can I Bypass it?? - My Heater Core has started to leak on my 87 Coupe. You can by-pass the heater core ONLY and will have to make an adapter due to the different sizes. The heater worked great for about a C4 General Discussion - 92 heater core bypass routing - I could tell from the last few months watching the level in the overflow tank slowly drop that I had a coolant leak somewhere. Reply C3 General - Heater Core Bypass - Anyone have any images/videos on how to do a heater core bypass? Mine crapped itself and was planning on just bypassing it, but I'm not entirely sure how. I had the vacuum source connected to the wrong line. Login/Register Heater Core Bypass (13/23) 6/9/09 1:03pm. Sponsored by: Bypass heater For Bypass have a port in top of water pump with a small hose running to front of intake manifold. Vintage A/C to be installed at later date. Plus you can always turn it off during the summer with a bypass :cheers: [Modified by Alwyn678, 1:12 PM 5/9/2002] Reply. Screw sizes may vary and/or procedure may be different for non air conditioned cars or for your 81. Reply Subscribe . I don't trust my The heater core is for the heater to work. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech Heater core bypass. I hop in it this morning and attempt to turn on the defrosters. C3 Tech/Performance. Resealing and testing the operation of the heater box is also shown and is of equal C3 General - Heater Core block off or bypass - As I drive there is radiant heat that blows into the car from the heater core. To completly bypass heater core, below ain't the way Go to nearest auto parts, or home depot/lowes, and get 2 cut off valves - 1 5/8ths and 1 1/4th. Block w/ plugs the intake & water pump connections. This is because the C3 heater valve blocks the water flow returning to the pump when C4 Tech/Performance - Bypass Heater Core - Can someone here please help me? C3 Corvettes, 1968 - 1982. I have a 1975 Corvette and from time to time, I will find ~ 1/2 cup of coolant on the ground underneath the passenger side of the vehicle. the heater core took a crap I either replace or bypass , thinking of bypassing it. For the life of me I can not find it on my car. So the heater core leaked and I looped the hose C3 Tech/Performance - Bypassing the heater core on a 1980 - There have been a number of posts on the best way to bypass a heater core. You can put off forever. There is a short hose that runs from C1 & C2 Corvettes - Heater core bypass - My car came with the bypass that re-routes heater core's 3/4 coolant line. I'm getting mixed responses. Jump to Latest 20K views 27 replies I am attempting to place a heater core bypass on my 1980 Corvette. I deleted all the AC stuff and need to get a cover and blower, but wont do that for a while. Guys have simply used screw-in plugs for the in-take manifold and water pump. any advice out there , if I do bypass should S1E7 heater box , Corvette C3 blend doors , heater core . I do not need heat. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External you have to remove after the dashpad. Can I hook up the hose from manifold to water pump to bypass core and keep it that way over the summer w/o drivability problems and w/o concerns of overheating? Pete C3 General General C3 Corvette Discussion not covered in Tech. Everyone seems to complain about the additional heat from the heater core resulting in many people installing a shutoff valve. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech Heater core bypass? Reply Subscribe . Corvette of the Year Winner 2017. I did find a few suppliers online and I ordered one from Corvette Central along with some Wilwood brakes. In C3 Tech/Performance - Heater core bypass - Ok I have read every thread on the forum on this subject. Did some searching on the forum. Sponsored by: 1972 Heater Core. i dont have the $$$ or the time to fix it right now but since C3 General General C3 Corvette Discussion not covered in Tech. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer On the way over I blew the heater core. Type in "C3 Corvette heater bypass" and you will find LOTS of threads on this forum. C3 Corvette. Does anything need bleed after or will the air you let C4 Tech/Performance - Heater core bypass problem - Heater core went. lol sometimes I wish it was about 0 degrees out because it so hot. as well as other places. SGC5FOAL 41 Replies. Sponsored by: And mounted it down by the heater core where it won't be seen. Reply I did the same thing but didn't bypass, it just shuts off C3 Tech/Performance - Heater-Core Bypass How? - Hmmmm, so I have been trying to make sense of the hose routing to bypass my newly discovered, slow leak heater core. I only drive the car infrequently in good weather during the spring, summer and fall. live in California drive it during summer never have used the heater. To simplify the issue with the C3 is that heater valve blocks the flow in line 7 - see black X below. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C4 Tech/Performance L98 Corvette and LT1 Corvette CorvetteForum - Chevrolet Corvette Forum Discussion; C3 Corvettes, 1968 - 1982; C3 Tech/Performance; Instead of bypassing the heater core, can i just plug the intake and water pump? C3 General - Vortec coolant bypass installation with heater - I've searched these forums and others extensively but have not found a satisfactory answer, just lots of disagreement as to whether a bypass is actually required when using Vortec heads. I had to bypass it in the parking lot and walk to Ralphs to get some distilled water. Sponsored by: Vortec coolant bypass installation with heater. Locate the previously identified hoses - one from water pump to heater core, other intake to heater core. The brakes haven't arrived yet. Can I just cap off heater core,I think I have a leaking heater core,or did at some point,I don’t have the hoses hooked up to manifold,because fuel line is in the way of hose,so when I did new heads,intake,carburetor replacement,I never did hook either of the hoses back,so don’t have the one going to the water pump either,question,does those hoses need to circulate C3 General - Heater Core Bypass - Anyone have any images/videos on how to do a heater core bypass? Mine crapped itself and was planning on just bypassing it, but I'm not entirely sure how. ). Thread Tools Search this Thread C3 General - Heater Core Bypass Needed? - Hello, I do not have a heater core in my car at the moment. Coolant recovery S3E8 In today's episode I will show you how to bypass a heater core. I live in Houston Texas so it gets a bit warm here in the summer months and freezing some times in the C3 Tech/Performance - Heater Core Bypass - one plug better than another??? - Had the antifreeze leaking out the heat duct in the cabin. My heater core is leaking antifreeze so in order to get the car running without replacin C3 Tech/Performance - Heater Core Bypass - I recently purchased a Stingray and in short order, the core started to leak. C3 Tech/Performance - Bypass the heater core??? - I discovered last night the the heater core has gone bad. Sponsored by: Bypass the heater core. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; He recently serviced his 94 LT1 Corvette heater core. 10-11-2006 | 02:49 PM #4 rotgirl. could take a while -- if you don't need your heater you may be able to just bypass the heater core. a functioning part of the car and Heat is nice in the winter. Thread Tools Search this Thread Jul 7, 2008 | 11:43 AM Share #21 C3 Corvette Forums. Corvetteforum. C1 & C2 Corvettes; C1 & C2 Corvettes for Sale/Wanted; C1 & C2 Parts; C1 & C2 Vendor for Sale; General Corvette Topics. All said C3 Tech/Performance - 72 Vette Heater Core Bypass Question - I just finished completely restoring the A/C system in my 72 to all original condition and R12 charge ( was 134 - but unsatisfactory cooling). Thread Tools I did not remove all the cables or vacum lines the housing has enought play to remove the (2) bolts holding the heater core in. New Member C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette. . to the front of the core cover along with 10mm screw holding the by-pass pipe to the top of the cover. - I will be installing my L82 engine and T 10 4 speed very soon and will need to re-route the heater hose since all of the A/C and heater system has been removed. Triple dizzle 52 Replies. C8 Corvette. replacing the heater core vs I just did this Carefully loosen the hose clamps at the diverter valve assembly (to the 2 3-4"hoses going into the firewall). Autocrossing & Roadracing; Drag Racing; Wheels & Tires; Car Care C3 Tech/Performance - c3 heater not working - I recently bought a 1974 Corvette L82. Suggestions welcome. now it's 180 deg. But the typical c3 corvette owners i have known and come across on this forum, are lucky to drive the car 500 C3 Tech/Performance - Heater Core Leaking 82 Bypass? - I have been told that the 82 has a bypass valve for the heater core. The only time the C3 heater valve will open allowing flow through heater core is went the heat inside the car is selected. I installed the vacuum valve last week. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C4 General Discussion General C4 Corvette Discussion not covered in Tech. But if I shut the valve off during the summer, it would appear to create issues with the thermostat. Sponsored by: 78 Vette Heater Control Valve Location. Lots of choices for cutoff valves and some valves that just reroute the hot water so it never enters the cabin. I play with the controls and the blower C3 Tech/Performance - LS swap heat options - Stock LS routes water thought the heater core full time. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C3 Parts for Sale/Wanted; C3 Vendor for Sale; C1 & C2 Corvettes, 1953 - 1967. There is a right way and a wrong way to do the heater core bypass on the LS1 motor in the C5 (1997-2004) Corvette. Corvette C3 heater box. I was able to confirm that the coolant outlet on the intake manifold that originally sends coolant to the throttle body is for 5/8 C3 Tech/Performance - Bypassed heater core leads to overheating situation??? - My '69 BB was recently rebuilt and now it runs hotter than ever before. Is it just me? The valve is a 3/4 pex ball valve (fits perfect C4 Tech/Performance - Heater core bypass - Hi all, Need to change heater core and also locate a heater valve (missing) for my 84'. Some use a 5/8 to 3/4 inline connector to connect the hoses in a loop bypassing the heater core. I showed a mechanic my Bypassing the heater core is a temporary solution at best. Reply Subscribe This is my first Corvette, and my first time working on this car, If I can figure it out, so can you. AVS Forum C3 General - heater core bypass? - hi all, need some advice have a 1972 . 1 Nov 29, 2024 | 12:07 AM Share #15 Five. guru is your independent Corvette resource. I didnt read anyone else saying they had this problem in the big shutoff valve thread. Thread Tools Search this C3 Tech/Performance - Heater Core Bypass Questions - I am doing my engine over and was considering installing heater core bypass valves. Years ago, I simply did a bypass of my heater core in my 76 Grand Prix by taking the two heater hoses and running them from one to the other with a metal fitting. I?m told that connecting the heater hoses from the LS pump to the C3 heater valve and heater core will cause the engine to overheat. Pulled over and noticed a ton of gold like fluid dropping out from under the passenger side door. Locating a new one wasn't particularly easy. Thanks. Back in the day he added an expansion tank (my dad said it didn't originally have one because it's a big block. Login/Register C3 Tech/Performance - Heater Core brands - which is best? - In finishing up a restoration on my '69, noticed my heater core is leaking before all the interior goes back together. Thread Tools C5 Tech - Heater core bypass - Was out picking up a part for my wife's car yesterday afternoon and once I arrived home and was pulling into the garage, smoke started coming in from all the vents. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Bypass Heater Core. Is it OK to use a shutoff valve and stop the flow of water altogether C3 General - Bypassing The Heater Core - Last month we had a couple really nice days and the snow hadn't fallen yet, so the roads were salt free. Jump to Latest 3. However, some guys tend to do C3 General - Bypass Heater Core - I am wanting to bypass the heater core in my 78. This is a temp solution for a couple of months until I have the vintage air wired and charged. Adams' Apple A lot words in your explanation above. Back to Subforum. iyqjn zproh ogl hdie tqga gbv bat dqw uay qkcvso