home *** CD-ROM | disk | FTP | other *** search
- From: sgm@otter.hpl.hp.com (Steve Methley)
- Date: Mon, 9 Nov 1992 13:26:09 GMT
- Subject: Venting a V8 crankcase..........
- Message-ID: <2030059@otter.hpl.hp.com>
- Organization: Hewlett-Packard Laboratories, Bristol, UK.
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!scd.hp.com!hpscdm!hplextra!otter.hpl.hp.com!otter!sgm
- Newsgroups: rec.autos.tech
- Lines: 24
-
- I have a Rover (ex Buick) 3.5l (215cu) V8 engine which I use in my off road
- vehicle. The engine is not in it's first flush of youth, so there is a good
- amount of blow-by hence a high crankcase pressure. The little pipe feeding to
- the carb is too small to relieve this pressure, with the result that at high
- revs there is now oil blowing past the rear seal onto the clutch. As I don't
- want to do a seal/clutch/ring job I'd like to vent the crankcase more
- effectively.
-
- Here's what was suggested to me by a rally enthusiast: Plug the vent pipe to
- the carb and vent the engine via a large bore pipe to the atmosphere - but put
- a trap in the pipe to catch oil droplets. The trap should be a sealed
- container of water, semi-full, with the vent pipe from the engine feeding under
- the water surface and a second pipe to atmosphere clear of the water.
-
- Obviously the idea is to have a low backpressure vent to atmosphere with a
- series water filter for the fumes. I'm told it's common in rallying and have
- seen a picture of such an installation.
-
- I'd love to know if anyone has tried this and what experiences resulted, or any
- thoughts even if you havn't tried it.
-
- All replies gratefully received.
- Cheers,
- Steve.
-