pro x pistons vs wiseco

[fixitrod]

I'm not an engine builder but there may be something else to consider.

 

If you are not going to re-bore the cylinders you might want the cast pistons. I believe cast and forged require a different amount of cylinder wall clearance. I'm not 100% on that. Just something I thought of that you may want to ask a builder about for a definete answer. If you are boring anyway, then wiseco is what I run.

 

The above comments about cast pistons are good to but may not apply as much when they are so small.

[knight_ripper]

Im runnin Pro-X. And the only reason I didnt go with wiseco's is because of the guy that bored my cylinders. I wanted to put the pro lites in there and he said nothing compares to OEM or Pro-X. I asked about Vitos Pistons...and he said that Vito's are wisecos just with somethin grinded off....cant remember...I think it was somethin with the exhause portion. Anyway, like I said, Im runnin pro-x and if my shop tech is right....I will be runnin these for years to come. Just like the OEM's that lasted 8 years in my shee. I was down to 95 psi per cylinder before I opened her up and fount that I was 7 thousandths out....and yamaha calls for only 6 thou. Now im at 138 per cylinder....

 

Im going to stay up on the rings this time. I figure changin out the rings is wayyyy easier and less expensive then getting her bored.

[MonkeyBoy]

Pro X here. If Duncan can run them for the 12 hours of PDV and win 7 of the last 10 years, I won't have any problems running them.

[littletroll]

Thanks everyone for your input on this post, very helpful.

[phippster123]

you must be an engineer 

 

You must ba a gay ass trucker