[Fot] Valve Lash While Engine is Hot

Rocky Entriken rocky at spitfire4.com
Thu Apr 12 16:00:20 MDT 2012


Migawd, is Paeco even still in business? First thing I'd do, if Paeco ground 
the cam, is check the cam to be sure it is the correct specs. (If they're 
selling you someone else's cam, I'd not worry as much.)

I could tell you multiple horror stories about dealing with Paeco, none of 
them good. To the end I ceased doing business with them years ago.

While you don't say what car your cam is in, the Rick Cline cam in my 
Spitfire has clearances of .022/.024 hot.

--Rocky Entriken

----- Original Message ----- 
From: <Tylerpthompson at yahoo.com>
To: <fot at autox.team.net>
Sent: Wednesday, April 11, 2012 9:04 PM
Subject: [Fot] Valve Lash While Engine is Hot


> My engine has a Paeco TR-6600 cam.  The cam card calls for a .014 
> intake/.016
> exhaust valve lash.  A little looser than stock, but not by much.  I know
> folks running larger clearances on the hotter cams and wonder if these
> clearances may be a bit too tight.
>
> That said, In talking with a fellow racer tonight who will remain nameless 
> (I
> don't want to name him in case I get a lot of back "lash" from this 
> question)
> he thought I should ask the FOT group if anyone has measured lash on a hot
> motor after a race.  We expect it to be tighter, and perhaps there is an
> optimum clearance we should be shooting for.  Just a thought in case my 
> valve
> lash is too tight.
>
> Appreciate your input..
>
> Thx
>
> Ty



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