Quote:
Originally Posted by RHanselman
You can run higher but care must be taken or you'll push out the head gaskets. Ask me how I know...
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Funny you bring this issue/weakpoint up. Coming from the Porsche 944 Turbo world this was a similar issue. The 944 NA/Turbo engine were open desk designs as well. What was found out is no matter if you used an MLS gasket instead of cometic, the cylinders would move around when it was really high PSI. It would pop the headgasket.
On the 944/951s people starting sleeving the cylinders with cast iron sleeves, or they would pour concrete into the base of the engine block to help stabilize the cylinders.
http://rennlist.com/forums/944-turbo...ilization.html
Just some food for thought. Issue is building our LT5's is so damn expensive.