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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!sgiblab!munnari.oz.au!titan!root
- From: c.oneill@trl.oz.au (Chris O'Neill)
- Subject: Re: Venting a V8 crankcase..........
- Message-ID: <1992Nov12.011427.27316@trl.oz.au>
- Sender: root@trl.oz.au (System PRIVILEGED Account)
- Organization: Telecom Australia Research Laboratories
- References: <2030059@otter.hpl.hp.com> <1992Nov9.150038.8182@mlb.semi.harris.com>
- Date: Thu, 12 Nov 1992 01:14:27 GMT
- Lines: 21
-
- In article <1992Nov9.150038.8182@mlb.semi.harris.com>
- jws@billy.mlb.semi.harris.com (James W. Swonger) writes:
- >
- > If you have a stock-type air cleaner, or one with some restriction in the
- >air filter element, you may be able to use the slight vacuum in the air
- >cleaner interior to draw a small negative crankcase pressure. Run a big
- >enough hose and use a filter element with low restriction. All you really
- >want is to stop oil gobs and particles, right? A can with a foam or fiber
- >element might do it. I'd suggest maybe fabricating a special vent outlet
- >on each valve cover out of the way of most of the oil splash - baffled
- >if possible. If you can pull from both covers, that'll improve things too;
- >your only suction path is via the oil return holes, which have their own
- >job to do. Too much air flow will help pool oil up top. Best of all would
- >be to draw from the main cavity but that's something to save for the next
- >rebuild...
-
- My car's engine has a hose from the crankcase to the valve cover, so the air
- doesn't have to flow up the oil return holes.
-
- Chris O'Neill
- Telecom Australia Research Labs
-