stockers

[SSDiv6]

Originally Posted by Frank Castros

Shouldn’t CP Pistons be put on notice by the N.H.R.A. Tech Dept.? I’ve been told they will make a piston to your specification and put the approved number on it. I’m sure there are other piston manufacturers that do this as well.

Anyone that has access to a laser engraver, can replicate the logo and part number on a piston.

I do not know if this was the situation, nevertheless I have personally seen a CP piston on an engine I took apart that had the approved part number, however, it had thin rings and the ring lands had been moved higher.

And no, in consideration of the car owner, who purchased the car from another racer with this engine and was extremely mad when I showed him, I will not post the pictures of the piston. However, a few members of this site have seen the pictures of the illegal piston and not surprised when I mentioned the name of the person that built the engine.

The matter was addressed with Snake Calvert at CP and he is investigating the matter internally to see if the pistons were shipped this way or if they were laser etched by someone else. By the way, the engine was reassembled with legal pistons. As a well known and respected engine builder shared with me, he was told by NHRA that he is one of the few engine builders that his pistons meet the spec.