Brake fluid reservoir seal?

[WBWSAIL]

After running in my first DE event, I found the top of the master cylinder reservoir covered in brake fluid after each run. The fluid level is right between the min / max lines, so it's not overfilled. When I did a brake fluid flush prior to the DE, I was surprised to see there is no o ring or gasket sealing the fill cap to the reservoir on my car, a 1988 951. I don't see an o-ring or gasket listed on Pelican or the other parts sites, so I assumed there just isn't supposed to be an o-ring there. Or did a previous owner maybe loose it? Should there be one there?

Thanks for any help

[jmj996]

I experienced the same problem on my first two track days with a 951 earlier this month, and even had brake fluid spilling over and way down, causing it to burn and smoke. I'd love to know the answer to this.

[nize]

could it be due to the sealing surface on the cap itself? it might be time to replace the cap. part number 951 355 351 00 available here;
http://www.pelicanparts.com/cgi-bin/ksearch/PEL_search.cgi?command=show_part_page&please_wait= N&make=POR&model=944M&section=BRKhyd&page=1&bookma rk=2&part_number=951-355-351-00-M100

[Lawrence Coppari]

A Mercedes cap also fits but you will lose the low fluid warning aspect of the cap. I used to substitute the cap from my 1980 450SL when I took the 944 to the track. It does not leak and is one piece except for the gasket.

[tjbreen]

I ran my first track event with a brand new resevoir and cap two weeks ago. It was moist at the end of each run. I have that cap and the power steering resevoir on my list of things to wipe with a rag at the end of each day.

[ahmed924944]

https://www.pelicanparts.com/More_Info/34-32-1-102-798-M33.htm

I think I found the exact aftermarket part needed for $2.00 (FTE 34-32-1-102-798-M33).

The ATE cap / float stem / rubber gasket looks to be identical for some VW Rabbit, BMW E30, and Mercedes E300 assemblies, however, the ATE reservoirs looks different for these cars.

[kdjones2000]

Well you almost made it to a 10 year time difference between the last post on this thread and your reply.....

Maybe next time

[944 Ecology]

Newbies, keeping threads alive since 2008!

[nize]

this is why the 951 cult withstands the test of time...