[Fot] Fwd: Never be beaten by equipment

[davehogye]

----- Forwarded Message -----
From: "Greg Solow" <Gregmogdoc at surfnetusa.com> 
To: "davehogye" <dlhogye at comcast.net> 
Sent: Wednesday, September 12, 2012 3:01:40 PM 
Subject: Fw: [Fot] Never be beaten by equipment 


----- Original Message ----- 
From: "Greg Solow" <gregmogdoc at surfnetusa.com> 
To: <jhhasty at gdhs.com>; <tr4racing at googlemail.com>; <fot at autox.team.net>; 
"fubog1" <fubog1 at aol.com> 
Sent: Wednesday, September 12, 2012 1:06 AM 
Subject: Re: [Fot] Never be beaten by equipment 


> AE "Hepolyte" pressure cast 87mm pistons were set up by AE with .005" 
> clearance at the bottom of the skirt at 90 degrees to the pin. Most 
> forged pistons will require more than that. 
> Kas has mentioned his technique of warming the piston in boiling water, 
> measuring the skirt diameter at that temperature, then adding (if I 
> remember correctly) .003" to the "hot size" of the piston to determine the 
> correct bore size. 
> In the engine we built that scuffed skirts 3 times in succession, it 
> always ran fine on the dyno and it high rpm. It scuffed the skirts idling 
> in the garage, running slowly around the pits, and after a hard run on 
> curvy mountain roads, driving slowly on city streets, then pulling into a 
> parking low. The culprit was the low rpm not putting enough oil onto the 
> cylinder walls of an engine with "steel billet rods" that had no provision 
> for squirting oil onto the cylinder walls at low rpm. 
> 
> Greg Solow 
> 
> The Engine Room