HP, how much can a LIL 2.5L take? How do they Blow?

[pk2]

Originally Posted by efahl

PK,

It's not so much that the peak HP, but the fat torque curve that the 3.4 gets you. ... I would expect the stock bottom end in a 2.5 to be good for 400-450 HP without problems (going forced induction would prompt me to put in different pistons though, I'd lower the static CR and increase the height of the top ring land).

Eric

Eric,

Thanks for your input.

250whp is certainly nothing to sneeze at, and that’s all stock? Tempting. I thought I’d seen “crank” numbers which didn’t seem terribly impressive.

I have forced induction. With a modest boost (a 10% pulley change) (and retuning) I figure I can hit or exceed 300 hp, (an arbitrary goal I set). I’d really like to do it though without blowing it up, to much fun to drive.

At 300hp would you still bother with new pistons? Would that be to lower the compression? Who sells pistons and other internals for these things?

Thanks, PK