Hello fellow friends,
I’m assembling my engine for a quite time so far. Unfortunately the machine shop take so much height from block’s deck, so I have now front deck with pistons passing 5 tenths of milimiter while rear deck, pistons are passing 4.2 tenths of milimiter, both above the deck line.
The gaskets I have here, are 1.3mm thickness. I’m not sure if the pistons should be Zero or negative in relation to the deck. I went to some articles and I found 2 tenths as a limit however, I don’t know if would be negative, positive or if wouldn’t matter.
Does anyone has experience on that issue? I know I could get a thicker gasket, but it costing so much, bringing it to Brazil right now. So I was considering removing from the pistons crown. However, valve pockets wouldn’t worth doing.
I even consider dismantling 2 sets of gaskets to assemble a higher one, but the ones available here, are secured by hydraulic press tool, so when I tried to cut, the steel sheets bent when doing it.
I hope that someone will be able to answer your questions because I am not experienced in engine engineering but I think that the answer will be in the service manual anyway.
I noticed that you want to use metal gaskets. Why don’t you use the original gaskets. I know that many people rave about the metal gaskets. This may be because they read something somewhere or it could be a a genuine reason.
I can say that I have had many of these engines in for rebuild and the metal gasket has caused considerable rusting around the waterways. I can only assume that this is caused by some sort of reaction between the two different metal types but I don’t know this for a fact. I can say that I personally have never seen the problem with the standard gasket type.
Maybe someone else can shed some light but I would ask that you give input based on professional knowledge rather than something you read on social media. Thank you.
Hi Joe, nice to hear from you!
I guess for twin turbos, the original ones are made of stainless sheets. But I never had properly dig into it. I have a solution for a non metallic gasket that could be used, a local company that makes it, but they not recommended for turbo engines, in my case migjt be worse, because the incremenr in thickness.
But that’s all guesses anyway. Let me go to the manuals once again.
Cheers!
