i've heard of many rumors to order some type of custom pistons when building 800hp+ motor...buddie is building one and had over the shelf cp....they are gone after a short lived life....anyone knows witch ones to order and what custom to ask about them...also someone said to get the pistons coated?any info will be appreciated.also a project pro am on the dsport mag supposly had the "syncros" coated with something so that they also lasted longer....i dont know...thanxs

 

I've made 300whp - 1000whp on off the shelf Wiseco (upgraded wrist pin), CP, Arias, etc. with no issues. What exactly failed or is "gone" with the CP pistons your buddy used? There is more to piston failure than simply piston design

 

I agree with Alpha... The off the shelf pistons are made to the same standards, with the same materials as "custom" pistons.. Custom usually just refers to any odd bore size, compression ratio, height (for stroker motors), etc...

Shelf pistons with upgraded wrist pins, and coating is definately a plus... Then you are good to go...

 

The problem is when you run the manufacturers suggested clearance. 84mm CP's call for 0.0035" which is way too tight for a motor making that much power which is probably what happened. On big power boosted engines I run a minimum of 0.0050-0.0055", they are a bit loud at idle but you got to have them that loose to make over 700whp. A shelf stock ARIAS piston will make 800whp easy with the right clearances built into them. Also the right stagger or piston ring end clearances helps.

 

Kj You Are A Monster! Alpha You Always So Wise! Nice To Hear From You....we Checking The Clearences As We Speak...i Am Thinking The Rings But I Think The Pistons Are Too Tight...also There Is A Leak....we Found A Lil I Think Coolant In The Head...i Dont Know Where Is Coming From But We Will Do A Leak Down Test Prob Wednesday...the Block Was Sleeved By Golden Eagle And By Talking To Some Ppl Apparently Happens With Them...i Don't Know....i Will Prob Replace The Pistons And Rings(what Rings Should I Purchase?)and Upgrade The Clearence In The Block...if I Have To Send Back This Block I Just Would Get A New Block And Get It Sleeve By Darton Or Bensons....this Sucks But So Far Made 560 In The Dyno Before Loosing Traction At 6900rpm...i Am Glad It Did Cause Now We Have To Fix This Problems.where Do I Send The Rods To Get The Wrist Pins Upgraded?and The Coating In The Pistons?also I Need A Better Intercooler..an 800+ One...any Suggestions And Some One That Can Weld Aluminum....

 

Nothing wrong with GE blocks.

 

+1 GE