Oil leak at rear of 2ltr

[bazzbazz]

Yes, but what is the the size that is SUPPOSED to be fitted, according to specs/workshop manual/part# diagram.

You can't fit just which ever, you can only fit one or the other, there is only 1 correct size to be fitted for that model.

Or have we gone through a time warp and the laws of mechanics & engineering have changed and I didn't get the memo? (I never get the memo)   

[jazig.k]

A quick google search found 2 alfabb threads giving info about years and sizes with the exemption of the spiders which were a lucky dip, having both sizes regardless of a particular year.

I've already forgotten which is which and when...

[vin sharp]

82mm all the way up to mid Alfa 75 T/S production, so around 1990-ish went to 84mm seal. Late Spiders overlapped this period too.
Make sure you fit the rear seal AFTER the rear main cap is tensioned down into position. If you put the seal in place then tighten the main cap, you will ovalize the seal & it will most likely leak.
Cheers,
Vin.

[NSharpley]

Hi Vin, thanks for the clarification.

I was chatting to the guys at EB Spares last night and they said the same thing.

Good to know.

I'll get myself a Corteco seal as it seems they are the more popular over the Akron.

[carlo rossi]

I still believe your cigarette seals are too long pushing the sump gasket out and letting oil through
happy to see an end to this one ,but on the other hand whats your down too for pulling out a motor ?

[NSharpley]

Ok, let me go through the history of the cigarette seals and why I believe that area is now sorted.

First time I installed them I decided to follow the "don't cut" advise.  They protruded about 3mm.   Sump went on, ran car to temp, short drive, lots of oil.  So I took the sump off and found the cigarette seals had not pushed further into the main cap as desired but had in fact compressed and spread outward to interfere with the mating surfaces, as you now suspect.

So I then took the "cut" advice and cut them flush with the block.

Sump back on and ran car to temp.   Absolutely zero evidence of oil coming out from where the sump mates to the block.

And, as per my video, there is a clear issue with the rear main seal.

So I now feel confident this is the primary issue with my oil leak.