Chevy Camaro, 2.8L V6
My car was leaking coolant from the hoses that connect on the bottom of the throttle body to a valve stem on the engine. To me, it looks like the coolant just goes through the throttle body and comes back out (my friend thinks it's to warm up the throttle body?), but the Chevy mechanic said they go to the aluminum intake manifold to cool it off.
We changed the hoses, but it is still leaking coolant from somewhere around the throttle body/manifold. I'm going to take it to the shop tomorrow to find out exactly where it's leaking from.

My question is would it be okay if we just bypassed the intake manifold cooling (if that's what it is) by connecting the bottom pipes? Will it melt the manifold?


PS This is my first post. Hi, to everyone.

 

I have a V8 TPI and I did the coolant bypass. The purpose is for the coolant to give a little extra heat to the throttle blades so they don't freeze or stick in colder climates. I ran the hose from that "T" thing, that has the hose coming from the firewall, directly into the intake manifold. It will not hurt your manifold at all, may even help the temperature of the incoming air too. Check the Tech section, I got a set of instructions from there and it works great.

I do think it's funny that your mechanic said that it would go thru the intake manifold to cool it off; may want another mechanic.

Good luck..Eric

 

If I just unhook the tubes from the throttle body and connect them, and just leave the holes on the throttle body open, would that be okay?

Like the "quick" method described here? https://www.thirdgen.org/coolantbypass

 

Where I can get that copper/brass patch coupling from? I called the parts stores and looked in my books and I can't find anything like it.
I need one that is shaped like a U, preferably.

 

ask a parts store if you can browse their hose section, just look for a U shaped hose, and dont bother with the throttle body, its working for me

 

if you have a v6 it is different from the picture in the article. just go buy a length of rubber coolant hose and make a big loop over the thorottle body. and yes it is ok to leave the throttlebody holes open.

and yeah, new mechanic time. "well, all the friction from the air gets that sucker pretty hot" if he tells you to replace your muffler bearings every thirty thousand miles call the cops

 

just get a small radius U shaped hose, using the length of heater hose going around the throttle body looks hideous

 

Can you please see my question at https://www.thirdgen.org/forums/tpi/...ml#post2850347 ?
Sorry for double posting, but it is something that might help me a bit at 1/4 racing next week