Ultimate Street breather...?
Zach Gomulka:
Quote from: BeetleBug on September 09, 2010, 08:24:33 am
And why do people still breath from their valve covers?
The Porsche 912 did, but only from the 1-2 side. What's the harm?
Dave Rosique:
Quote from: Zach Gomulka on September 10, 2010, 01:36:57 am
Quote from: BeetleBug on September 09, 2010, 08:24:33 am
And why do people still breath from their valve covers?
The Porsche 912 did, but only from the 1-2 side. What's the harm?
Both valve covers were vented on Super 90's
Rennsurfer:
I always thought that venting the valve covers was a personal preference thing... and not a requirement. Whatever works, I guess.
stealth67vw:
Didn't the heads get vented on late type 3s also.
Neil Davies:
I've had a couple of different breather stups, both made from old halon fire extinguishers. The first one was a 1L aluminium one fitted in a mountain bike bottle holder that was mounted to the firewall between the hinge mounts just off horizontal. The nozzle was modified to take a breather tube and holes were drilled in the bottle around the top - gasses had to go all the way down the pick-up tube inside the bottle before they could get up to the holes. I had the valve covers, generator stand and fuel pump block off vented to the same line using T-pieces - it was ok at sub 5.5k rpms, but above that it would pressurise the 1&2 rocker cover and cause leaks. I re-arranged the tubes and t-pieces and it was better, but still not perfect so when I got my 2180 I had a steel fire extinguisher (about 1.5L) with four angle fittings welded to the sides and a small K&N style filter at the nozzle end. That one was mounted vertically and never leaked at all.
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