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RE: [T3] Valve stem seals ?


On 6 May 2006 at 20:19, Keith Park wrote:

> Ive been told in the past that our rocker areas fill at least half full with
> oil at speed on the highway, suggesting that oil could easily get sucked
> into the intake guides and have no problem oiling the exaust guides.
> Is it true that the heads fill with oil?

Berg makes this claim, but I'm skeptical. In the first place, that 
would leave the sump almost empty, and in the second place it would 
require compressing the air in the rocker box to double atmospheric 
pressure (except on 72-3 engines with the rocker box vents.)

It MIGHT be possible if you had vented rocker boxes, but otherwise I 
doubt if it happens.

> One thing that my Squares engine has done at intervals over its lifespan of
> 100Kmi so far is to FOG THE TOWN on deceleration!  At its worse when Ive
> been at speed on the highway for a while... I mean I would turn the sky in
> your rear view mirror blue on a cloudy day!
> 
> Lately it has stopped doing that again, hopefully for a while.

I've seen that happen on early FI cars with the blue nylon "scrubber" 
in the breather box, but only on days below freezing, when the 
scrubber could freeze up with combustion moisture and prevent the 
engine from breathing.

Do you have the 72-3 rocker box vents?

-- 
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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