At 04:36 PM 7/8/06, Frank Krajewski wrote:
>Help! I spent the better part of two hours attempting to replace the
>gasket that goes between the canister and the filter head in my 1964
>MGB. It is a 2 piece filter. The rubber gasket (ring shaped but not
>an O ring) came with the the Crossland filter and there is no way
>the new gasket fits in the groove. I even checked another new filter
>I have and that gasket is the same size. I destroyed the old gasket
>when I removed it. The reason I wanted to change the gasket is due
>to the huge oil leak right after my oil change. Is there a special
>tool or old mechanic's trick for getting that gasket to fit in the
>groove? In desperation I have ordered a spin on filter adaptor that
>is available for the early B but I did want to keep everything original.
See here: http://mgaguru.com/mgtech/engine/of100.htm
The MGB two piece cannisters are similar to my illistrations of Late
Tecalemit and Purolator filters. These use two O-rings of the same size.
The illustration of the early Tecalemit filter (for early MGA only)
shows the one piece canister with the head asembly which fits inside
of the cannister. This setup uses two O-rings with different
diameter and cross section. The smaller diameter ring fits around
the head inside the cannister.
Replacement filters are commonly packaged with two O-rings, one of
each type. The same filter is sold under same part number for both
MGA and MGB. This is correct for the early MGA only. For later cars
you throw away the smaller diameter O-ring and install the larger
diameter one between the canister and the adapter head.
If you want to change both O-rings you have to buy an additional
larger diameter O-ring as a separate part. In many cases people
change the lower O-ring only and leave the upper one untouched. Of
course this can lead to leakage at the top joint as the upper seal ages.
I wouldn't expect anyone to package and stock the filters under two
different part numbers for the different o-rings, but it would be
nice if the package contained three O-rings to encourage people to
replace the top one regularly.on the MGB and later production MGA
Barney Gaylord
1958 MGA with an attitude
http://MGAguru.com
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