weisco wrist pin design/problem?

[slowgsr]

Hi,

I came across some info related to honda guys.. claiming the weisco pistons fail over 650whp.

The main reason is the std wrist pin design is weak, however this can be upgraded to their heavy duty wrist pin.. which is stronger. Now, the next weak part is that the skirts crack under high(er) power.

Anyone know if this exists in the dsm community?

I have a shortblock sitting beside me with weisco's and turbo tuff rods all ready to go, and im a bit worried now that I have read this since I am looking for 150+mph power with this motor.

Any insight? Should I be worried?

They also recommend a silly tight P2W clearance, 2.5 thous.. I however ran mine at 4 thous..

Thanks guys.

Edit : Maybe theirs fail due to RPM? Since most of them rev their high HP engines to 92-9500rpm.

 

[TunaTalon]

Where there any pictures of failed pistons? If the skirt failure was above the wrist pin then it was due to compressive loading related to power.

However; if the skirt failed below the wrist pin then it was due to inertial loading related to RPM.

 

[slowgsr]

Thanks, I think I will be fine. I mean.. heck lots of guys use wiesco pistons and its a very rare occurance.

 

[CPHunter]

I heard its because Honda's use a small wrist pin size. We use a nice size 21 for 1g's 22 for 2g's i got a custom ross set piston with a 23mm wrist pin

 

[slowgsr]

I'm going to call wiesco tmrw, just for clarification on any possible issue.

There's really nothing I can do now though it's not as if I'm worried enough to change pistons. All too often product gets blamed for failure without finding the root problem ( tuning or machining etc )