Re: oil seal (poll)

["Jim Adney" <jadney@vwtype3.org>]

On 7 Mar 00, at 18:02, Bernard Seront wrote:

> I do have extended bosses around each of the 3 bolt/stud holes. Two of
> them, the ones closer to the oil passageways are about 1.2 mm thick, the
> third one is about 1.5 mm thick.

About what I saw, but you didn't mention the step/overlap.

> Now almost everything becomes clear : we need a "real" spacing between the
> cooler of about 3 mm (given a thickness of 3.5 mm for the seal), I figure a
> compression of 0.5 mm would seal the passageways (sounds ok?). If the
> bosses are thick enough that's fine, otherwise you need to adjust with
> extra spacers.

I agree that squeezing the 3.5mm seal down to 1.5/2mm seems 
extreme. 3mm seems fair to me, too, but it is posssible that this 
might leak when the seals were very cold.

I would be tempted to add a washer here, too, to get the 
compressed height to something in the 2.5-3mm range.

I wonder how the doghouse type 1 cooler adaptor fits to the case 
here. Does anyone have one of these that they could measure? Did 
these have protrusions, or did they use the spacer washers? Since 
these use the same seals, we might be able to learn what VW 
intended by examining one. Note also that this adaptor also 
mounts to the same style of cooler. What does it require between 
the cooler and the adaptor.

I believe Dave Hall has the micorfilm and might be able to answer 
these quesions.

> There's no mark on the cooler except the code number (311 ... B) and the
> date (1/71) .

Wasn't your car a 73? If so, then this is not your original cooler.

-
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054

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