<VV> RE: Ed's strange turbo behavior

[Andy Clark]

Hi, Jim. My boost gauge reads in psi and is at "0" with the engine off.
Andy Clark
Camano Island, WA.
66 140/4 Monza Sedan
66 140/4 Stinger Clone
66 180/4 Cord 8/10 #60 
----- Original Message ----- 
From: "Jim Burkhard" <burkhard at rochester.rr.com>
Sent: Friday, January 06, 2006 10:55 PM
Subject: Re: <VV> RE: Ed's strange turbo behavior


> One big question ... look at the gauge face and tell us:
> 1) Does it read "psia" or "psig"?
> 2) When you shut the car off, what number does the boost 
> gauge read?
> 
> This is a (relatively) unmolested sorta stockish car, right? 
> Boost should be limited by the restrictive Carter YH carb. 
> If you switch to something else, you can make more boost, 
> but at these pressures (if they are gauge pressures and not 
> absolute pressures) you will be scattering stock cast 
> pistons even if you somehow keep it out of spark knock (at 
> those gauge pressures, you need water injection and/or 
> intercooling and/or active knock sensing and spark retard, 3 
> modifications it seems you are implying are unlikely.
> 
> My vote is that the gauge reads psia.  Subtract off 14.7 and 
> you get gauge boost pressures of between 5 and 11 psig ... 
> right where they should be on a healthy stockish Vair.
> 
> Jim Burkhard
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