IH gasket coolant leak w Pics

[XfireZ51]

Jerry,

I appreciate your $.02. The IHs I had were already ported but to 34mm. I opened them up to 36-36.5mm. However, the Plenum was matched to the IH and then the cylinder head to the IH. The gaskets were from FlatOut Racing based on their 36mm template. I did trim gaskets to match as close that I could while leaving material where I thought it needed it.
However, good tips for next time. So far, my repair is holding.

[A26B]

Originally Posted by XfireZ51

Jerry,

I appreciate your $.02. The IHs I had were already ported but to 34mm. I opened them up to 36-36.5mm. However, the Plenum was matched to the IH and then the cylinder head to the IH. The gaskets were from FlatOut Racing based on their 36mm template. I did trim gaskets to match as close that I could while leaving material where I thought it needed it.
However, good tips for next time. So far, my repair is holding.

Dominique,

If you have the injector housings off again in the future, let me know & I'll send you a set of plenum & injector housing gaskets on trial. The gaskets are made to OEM engine specs for port spacing, have 37.5mm port size for the plenum & 36.5mm for the inj hsngs. They should make a pretty accurate template to check the porting location accuracy.

The material I use for plenum & injector housing gaskets has a fully cured nitrile butadiene rubber binder for maximum fluid resistance. It has excellent sealability in a variety of environments and flange conditions. I'm certain this material has superior resistance to the paper gaskets you're using.

If you use the gaskets and like them, you can pay for them. If you don't, toss them and forget about it. Hopefully, you won't incur any more coolant leaks.

Take care,
Jerry