Re: [DMCForum] vaccum under the valve covers?

["Andrei Cular" <acular@xxxxxxxxxxxxxxx>]

My point is that it is drawing a vacuum in the crank is not uncommon, it
might not be on every street car but it is still used.


Andrei




----- Original Message ----- 
From: "Martin Gutkowski" <webmaster@xxxxxxxxxxxxxx>
To: <DMCForum@xxxxxxxxxxxxxxx>
Sent: Friday, August 29, 2003 4:17 PM
Subject: Re: [DMCForum] vaccum under the valve covers?


What's your point? We're talking a vacuum leak that will cause the fuel
to not be metered correctly, bugger all to do with dragsters.

Andrei Cular wrote:

>Well just go and look at almost any dragster, they pull purposely pull a
>vacuum in the crankcase.  It serves several purposes, first any blowby
wont
>pressurize the case and blow all the oil out, allows you to run low
tension
>ring or and or larger gaps, and some people seem to think that by not
having
>as much air behind the pistons they also move better.
>
>go to www.summitracing.com or www.moroso.com and take a look at all the
>different vacuum pump setups they have.
>
>
>
>Andrei
>
>
>
>




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