i never really game much thought to the pt cruiser lash adj's and rockers till today..i was talking to my friend friday night (he just bought a new srt4)...i was amazed to find that it only revs to like 6700 rpm....now i'm not to down on the neon/pt cruiser side of things, but i thought the advantage to using these parts was to give extra strength so you could rev to higher rpm's?????? it seems to me that the stock rockers are built to hold up to 7300, while the others are only meant to hit 6700...am i wrong????? i would really like to hear some feedback on this...as i'm finishing buying stuff now...i also would like to hear what anyone things about the indy stainless valves that Howell sells....should i try em out or just go with ferrea valves????? feedback welcome please....tks
Mike

I think it has to do with the size of the engine maybe. 420a = 2.0L PT = 2.4L. :shrug

The PT rockers/lifters arn't what restrains that engine to 6700, DR nailed it ^.

ECU programming.
i have the indys goin in my head now. they looked good as far as valves go.

Originally posted by tim97rs
ECU programming. i have the indys goin in my head now. they looked good as far as valves go.

I was just saying why it's programed lower.

SRT-4, PT Cruiser and other using the 2.4 are all limited to a lower rev speed than a 2.0
reason is simple: the extra travel of the piston, the 2.4 piston travel a stroke of 3.98 inch against 3.26 for the 2.0
the 2.4 pistons travel at 122% of the speed of the 2.0 pistons all the time per revolution
at 6500 rpm the 2.4 are travelling at 51740 inch /minute while the 2.0 need to run at 7935 rpm to reach the same speed
(example based on overall stroke only and not in real life value)

Alain

thanks guys especially alain...great explaination...as for valves anyone else have input on the indy valves...the difference in price is about 80 dollars...just curious as to the direction i should go

Originally posted by WickedESi
The PT rockers/lifters arn't what restrains that engine to 6700, DR nailed it ^.

You just made my day sir. My guesses are becoming more and more educated these days. w00t!