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FE Power Forums => FE Technical Forum => Topic started by: winr1 on January 27, 2024, 10:21:23 PM

Title: Minimum thickness of bottom of valve reliefs to piston bottom
Post by: winr1 on January 27, 2024, 10:21:23 PM

Read on more than a few sites but wanted yalls opinion

Thinest point of valve reliefs to bottom of pistons

Forged pistons.... around 10.3/10.5 .... naturally aspirated


Ricky.

Title: Re: Minimum thickness of bottom of valve reliefs to piston bottom
Post by: jayb on January 28, 2024, 10:21:47 AM

I've measured a few of my CP pistons, they are always at about 0.200".

Title: Re: Minimum thickness of bottom of valve reliefs to piston bottom
Post by: Barry_R on January 29, 2024, 08:26:22 AM

You can get quite a bit thinner in "small areas" on N/A applications. 
I've seen .130 at the point - I've always heard guidance of .160-.170. 
Problem is that small areas can become big areas if they open up from a bad tune or...way better to be safe.

Title: Re: Minimum thickness of bottom of valve reliefs to piston bottom
Post by: winr1 on January 30, 2024, 12:51:25 AM

Many thanks yall  :)


Ricky.