keltalon
Supporting VIP
- 3,474
- 962
- Jun 29, 2003
-
Luthersville Ga, Atlanta,
Georgia
These are my $.02Since you build and tune your own engines, maybe you could tell us the PTW clearances you honed your block to, ring gaps you set, pin bore clearances, the highest oil and coolant temps your car experienced, which oil you used, how much knock you ran into while tuning, etc. etc., -pretty much anything numeric and relative. None of this information is available in any post in this thread in which the user is claiming a catastrophic failure of a Wiseco piston. I run a ptw clearance of .040. I had my pistons custom made to my own specs by cp. my top ring gap is .019 and my second ring gap is .021. I used nothing but amsoil 10w40 high zinc because of the scar test is higher than most oils on the market and is well suited for the front case tpye oil pumps which can benefit from the protection the zinc content provide. The highest coolant temp I let my car see is around 205. I always tune my car to experience zero knock epecially since in use E85 majority of the time and any knock with it can be devastating. PM me if you like more answers.As far as I can tell the consensus of the thread says that the OPs failure was from improper PTW and getting the piston too hot. This is an opinion based on what none other than someone's experience with the same thing I wonder what pistons they were using.