DanaT

I am watching with interest the builds of the engines.

I question one thing. Why not use the 2,7L as a basis for a 951 engine?

It seems that there is work involved to put the 2.7 head on the 2.5 with the bigger valves.

Why not just get some low compression pistons for a 2.7L and use the 2.7 engine or even stroke a 2,7.

I must be simple why it is not being done. I just dont see it.

SirLapsalot

I sold a 2.7L engine to someone on the board that was planing on using it as a starting point for a 2.7L turbo build. I recall people at the time saying why not just go all the way to 3.0L but he just wanted to keep it simple using some forged pistons and rods along with the 2.7L head/cam and turbo valves and springs I believe. So some people do it but I can't say why its not more popular. Maybe 3.0 or the stroker motors are just the most recent popular thing to do and maybe it used to be more popular you just don't see as many documented builds.

Tom M'Guinn

My three liter is an 89 2.7 motor with an 88mm crank. I think this is pretty common...

hazlgreen

Did you complete the crank change so you can tell us how the car changed, or have you driven others without the 88mm crank and can compare/contrast the differences? This is a modification I’ve been thinking about, but I don’t want to change the engine characteristics in a dramatic way. Thanks.