Re: cooler seal Poll

[Bernard Seront <serontb@wanadoo.fr>]

>From: "A. P. McIlwraith" <mcilwraith@aircooled.net>
>2] The second issue is whether or not dual relief cases had 'spacers', Jim's
>decisive opinion, from a recent post, is quoted above, so far my dual relief
>case, Per Lundgren's, yours and Herman's dual relief case have all been
>equipped with spacers [mine are functional spacers] all dismantled for the
>first time, I believe.
>     From this we can begin to suspect that although they shouldn't have
>them, at least some do. We may also suspect that given your replacement seal
>measurements/difficulties that some parts company, if not Volkswagen AG,
>addressed this problem by modifying the replacement spacers in its kits. I
>only suspect that because I didn't encounter the same unfortunate problems
>as you, snug fit and no oil leaks.

I strongly feel my engine has not been badly messed up by some PO, for sure
it has never been rebuilt. On the other hand my cooler seals are wrong
(10/8 mm), so I guess someone but the factory did that, maybe the spacers
were put in at the same time, following the part list diagram!

>From: "Jim Adney" <jadney@vwtype3.org>
>Yes, these sound like the spacers, about 3mm thick. There are 
>also flat washers which were just intended to go on TOP of the oil 
>cooler; these were only about 1mm thick. 

I have both the spacers and the washers, no problem misplacing them, :-)

>The 10mm cooler has the 311 part # stamped on the top to the 
>right of the oil pressure switch boss and it ends with a "B". This is 
>visible with the engine in the car. The early cooler is not marked.

I have the late one witn a "B"

>Sounds like the colors are getting confused. I hope people aren't 
>just making these seals in all combinations of colors now, because 
>that would make this situation even MORE confusing.

Yep, red or green doesn't mean old or new anymore.

>This is puzzling. One thing that I HAVE seen are late 10mm/10mm 
>seals that were too hard. These did not want to compress. Could 
>that be your problem? 

I don't think so. The rubber is quite soft for both the Brazilian's or
Wolkswagen's seals I have. From memory I would compare the softness with
the pushrod tube seals I have in the engine gasket set

>Yes, but if you look at the 10/8 seals and compare them with the 
>10/10 seals you will see that they are the SAME thickness, while 
>the early 8/8 seals are thicker by the thickness of one of the 
>spacer washers. Since the 2 thin seals are the same thickness 
>they need to both be compressed the same

Absolutely

>hence no spacers.

or spacers in both case, :-(

Seriously the main concern is doing it right enough to avoid leaks. I
cannot imagine by any way how this setup would work without any sort of
spacers. Let me try to explain:
The seal is 3.5 mm thick, I mean the central part wich is of a larger
diameter (is this clear?), it goes in between the cooler and the flat piece
of the case where the cooler sits. Without "spacers" one would need to
compress the seal to a thickness of zero to get a good contact and mating
between the cooler and the case. I hope I make my point clear; you must
have something, if not a spacer like we found, the cooler itself needs to
incorporate it. Is the bottom tin of your cooler flat or do you have any
protusion that would fulfill the "spacing" function?

Bernard.

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