[s-cars] Bypass valves - Which one?

[Trevor Frank]

So I have some data from an oil manufacturer that says that oil in the
crank case suffers from recirculation of the crank case vent into the
intake.  In addition to displacing cool clean air, introducing crap like
burnt and un-burnt hydrocarbons, reducing octane, etc...  Worse
increasing combustion pressure because of non-compressible in the charge
air and screwing up your ignition timing, i.e. to much pressure too
soon, witch could lead to detonation/pre-ignition.  Then to add insult
to injury also creates blow by that will degrade the oil in all sort of
bad ways. 

Send it into the exhaust with an egr valve on it if you want the benefit
of negative crank case pressure.  Get a smog pump or purpose made vacuum
pump to run off the motor.  But on a high hp motor teetering on the end
of oblivion it is, imho, dangerous to put it back into the intake.

-----Original Message-----
From: Russ Panneton [mailto:russ at panneton.name]
Sent: Saturday, December 06, 2003 7:48 AM
To: Joseph Pizzimenti
Cc: QSHIPQ at aol.com; CaptMagu at aol.com; mlped at qwest.net; Trevor Frank;
gary.m.lewis2 at BOEING.COM; s-car-list at audifans.com
Subject: Re: [s-cars] Bypass valves - Which one?

I thought the main reason to keep oil out of the intact tract was that a

little oil reduces the effective octane rating of the gasoline, leading
to more chance of detonation...

Joseph Pizzimenti wrote:

>Scott,
>Not only does it help with combustion, but it also
>helps keep your intake tract clean and help those
>Samcos from popping off with all that oil.
> 
>


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