F@#$ing Throttlebody Gasket!

[theconductor]

I recently had a 70mm Accufab throttlebody installed and it started leaking coolant from the egr right away. No problem, I thought. I replaced the gasket myself and it still leaks. Has anyone used gasket sealant for the egr spacer? ANy other ideas? I wonder if the throttlebody surface is warped or something.

-Kyle

 

[wythors]

Either the throttle body or the egr spacer is damaged or warped. Since the coolant is under pressure, sealer may or may not work. I'd try to fix the problem first.

 

[NIKwoaC]

IS your EGR system still fully functional? I've heard before that you can eliminate the coolant passages to the EGR spacer even if you still have a functioning EGR. Do something like that at your own risk though, I can't say I've done it myself.

If you DON'T have a functional EGR system, there is no reason to run coolant through the spacer at all.

Accufab stuff is supposed to be really high quality, I can't imagine how it would be warped. Are your gasket surfaces clear of scratches? Are you torquing to spec? Also, torque the bolts in the same fashion you would the lugs on your car, that might help you get a better seal.

I wonder if the boost you're running through the system with that S-Trim is having some effect.

 

[93 LX]

Mine did the same thing so I got tired of dealing with it. I got a piece of lead, cut ti ti fit and now the problem is gone. In retrospect I should have used something harder like copper or a dead soft aluminum but in either case it works, no leaks for 10 years....

 

[theconductor]

Mine did the same thing so I got tired of dealing with it. I got a piece of lead, cut ti ti fit and now the problem is gone. In retrospect I should have used something harder like copper or a dead soft aluminum but in either case it works, no leaks for 10 years....

Pardon my ignorance, but you made a gasket out of lead? A friend of mine mention buying thicker gasket material and cutting to fit.

Anyone else tried an aluminum gasket?

As a side note, I ran it though another heat cycle, let it cool down and tightened the nuts again. Seems have to helped quite a bit. Still a little coming through though.

-Kyle

 

[93 LX]

Yes lead.. it works on the same principle as copper on a header gasket. The softer metal forms itself to the imperfections of the mating surfaces. I did use a bead of RTV as well.

 

[Makdaddymac]

same problem big bead of black rtv sealant here.(doesn't look to bad)

 

[93 LX]

same problem big bead of black rtv sealant here.(doesn't look to bad)

No leakage in to the tb, air intake..

 

[89lxsport50]

I have the same problem with my stock setup. I've replaced the gaskets twice, and even used rtv the second time. It still leaks. I took the hoses off and connected them with a piece of copper tubing. Someday I'll try to fix it again.

 

[nisreo]

If you use rtv, dont forget to let it dry before starting the car. youll get a whole lot of coolant in your cylinders real quick... pop goes the head gasket.

Ask me how I know.

 

[Makdaddymac]

nope i let it dry for like days and im sorry my idea of big bead is smaller than your imagining it just a gasket helper amount.
no leaks that i know of and no head gasket problems...

 

[flyinghi3]

mine leaked when i changed out the TB years ago. my EGR is als bypassed so if yours is bypassed just get a piece of brake line and two small clamps and bypass it.