[Shotimes] Re: Shotimes digest, Vol 1 #3625 - 8 msgs

[Alan Fanning]

FWIW, I recently tested several SHO's for engine vacuum at a group
get-together. I saw a steady 25 inches as a typical reading on a stock SHO.
On my engine with Stage 1 cams I was down to about 15 inches, but still
steady.  If the needle is flopping all over you have problems, but I don;t
recall the details.

    Alan

> From: "Kevin & Cheryl Airth" <clubairth@peoplepc.com>
> To: "Paul Nimz" <pnimz@v8sho.com>, <cmichaelo@optonline.net>
> Cc: "shotimes" <shotimes@autox.team.net>
> Subject: Re: RE: [Shotimes] What can destroy a cat?
> Date: Sat, 19 Jun 2004 12:12:21 -0500
> 
> Thanks Paul!!
> I had forgot about using a vacuum gauge. Here is why. Have you attempted
> this? I have found the vacuum gauge and it's actions are so wide open to
> interpretation that everyone who looked at the readings came up with a
> different answer!! I think vacuum tests would be more useful if we could
> some how get a baseline for each engine. Maybe with 2 SHO's side by side and
> using the same gauge and the same tests. That might give you a leg up on
> what is actually happening inside the engine. You do mention something that
> may have messed up my experiences. My vacuum gauge does NOT have the gauge
> damper control. I have not seen one with it? Maybe my gauge is a cheap one
> but the damper adjustment would put another variable in the system that has
> too many already?
> .
> .