The oil pan pressure goes into the head and valve cover, and chances are
with no way out, will liberate itself by blowing out under the gasket and
around the oil filler cap. Even with the 1" minimum breather on the block,
you still need the one on the valve cover, not just a little 1/2" hose
either.
----- Original Message -----
From: "Bill Babcock" <BillB@bnj.com>
To: "Mark York" <m-syork@comcast.net>; <FOT@autox.team.net>
Sent: Saturday, December 29, 2007 9:02 AM
Subject: Re: [Fot] Valve cover breather
> No idea. I've always had a breather on mine so I couldn't say what the
> result
> would be of eliminating it, but I suspect the gasket might leak worse than
> it
> already does. The stock TR3s have a breather, in that the oil fill cap
> isn't
> sealed. Of course Tech generally won't let you do that with an engine
> that's
> to be raced on a track.
>
>
> -----Original Message-----
> From: fot-bounces+billb=bnj.com@autox.team.net on behalf of Mark York
> Sent: Fri 12/28/2007 10:58 PM
> To: FOT@autox.team.net
> Subject: [Fot] Valve cover breather
>
> Amici
>
> Is there any advantage to add a breather to the stock valve cover on a TR3
> or early TR4 engine? I've read articles that small block V8s "breathe
> easier, hinting that performance is increased, is this an old wives tale
> or
> is there some benefit to be gained?
>
> Thank you
>
> Mark
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> Fot@autox.team.net
> http://autox.team.net/mailman/listinfo/fot
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