I have a question. Say you had a cracked block on a TGP. Could you use a N/A 3.1 block and reuild the engine with all the Turbo compnents onto it. And then put it in the TGP. I thought that I heard somewhere that a turbo had lower compression than a N/A 3.1. So if the compression is lower I would think not. Any input is appreciated.
Purely speculation, but I would think that the compression would be regulated by the manufacturer by putting different heads on rather than using 2 different blocks. Then again we are talking about OEMs :D The answer from someone who really know this should be interesting...
Hmm, cracked block...sounds familiar... :wink:
Sal, let me know if you are gonna be in N Providence this week, we can get together.
Greg
:mrgreen: I have this answer... the block is different, it is .100 of an inch taller, to reduce the compression, and you don't even want to wind up Jeff M about a chip for a N/A block with a turbo as he will not do it!!!
I have herd of using a special thick (I think copper) gasket to raise the head height the extra distance, you might check into that.
:? There has been talk on the boards about using a thicker copper head gasket, but I haven't heard of anyone actually doing it.
I personally wouldn't trust .100 (1/0 of an inch) on forced induction moter!!! (10-12lb of boost) but to each his own...
It has been proven that the deck height is taller. It seems like a really odd way to decrease compression by such a small amount. They must have had to order a bunch of rough casting blocks and machine them for the taller deck. I don't understand why they wouldn't use different pistons. Increaseing the deck height reduces the quench area, kinda like using a thicker gasket. I can understand not using different heads.
I guess if it were up to me I would get pistons with more dish to them, even if it meant custom forged. I would drop the CR a little more too, say 8.5 or less.
Chris