I am making 600+whp and had a weird clicking noise develop after the last time at the track, start looking and after pulling the pan, windage tray and etc i am moving the crank and notice oil squishing between the wrist pin and the piston on my SRP's. i called the tech line and they said the max power these pistons are rated for is 400-450whp. has anyone else ran them with any type of higher horsepower and had this problem? I am going to buy CP or wiseco probably when i go to a sleeved block but just wanted other peoples take on this issue.

 

im about 450+ on pump and 500+ on race....5,000 miles so far so good

 

SRP is JE's "cheap" line. So Im not surprised theyre rated for such low power.

 

what was the piston skirt clearance?

 

I was running on 420 whp last year for 1k miles and didn't have any problems. This year I'm shooting for 550whp so I guess we will see how they hold up. What kind of problems do you think your having in relation to the wrist pin? Excessive piston expansion?

 

piston to wall is right at .004 when i put it together, not sure what would have caused this as it only happened to 1 piston and its #2. the pin just moves up and down in the pin bore. i will be pulling the head and rod/piston this week to inspect it further

 

Do your pistons have that super thin intake valve relief wall too?

 

We've been making 500+ on our D16 SRPs for the last year or so.