valve clearence

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Post Reply
rocketracer380
Pro
Pro
Posts: 331
Joined: Fri Jun 20, 2014 8:41 am
Location:

valve clearence

Post by rocketracer380 »

min clearence between valves
hoodeng
HotPass
HotPass
Posts: 1102
Joined: Sat Mar 04, 2017 6:53 pm
Location: South Australia

Re: valve clearence

Post by hoodeng »

Angled valve to valve @TDC, or parallel valves seated?
mag2555
Guru
Guru
Posts: 4608
Joined: Sun Sep 18, 2011 11:31 am
Location: Heading for a bang up with Andromeda as we all are.

Re: valve clearence

Post by mag2555 »

With valve guides in good condition and with the expansion rate of the general valve material used I have never had a issue with .035" , although others have run less.

One things forsure,if we are talking about a Aluminum head with its seat incerts and running a maxed out valve job I would not go less then .060" just for the sake of the overheating and distortion of the Intake seat on the Exh valve side and the loss of seal that comes along with that sonner or later!
You can cut a man's tongue from his mouth, but that does not mean he’s a liar, it just shows that you fear the truth he might speak about you!
Post Reply