Rear crankcase seal.

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trevski
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Post Thu May 26, 2016 4:41 pm

I swapping over my gearbox (manual m20 b25) and As it's out I'm going to change the rear crank case seal as it's always leaked. My question is what else apart from the seal is involved? Any other bits I need to get to do this or is it simply the seal. Thanks
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sweep
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Post Thu May 26, 2016 9:02 pm

Do the sump gasket also.
Yeti
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Post Thu May 26, 2016 9:55 pm

just the seal mate easy enough im LB so i can help if needed ? unless its you i spoke to on facebook lol
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Brianmoooore
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Post Thu May 26, 2016 10:40 pm

Sure it's leaking? I've never seen a rear crank seal on an E30 that has failed yet, but I've seen plenty of M20 sump gaskets leaking at the rear.
trevski
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Post Thu May 26, 2016 10:47 pm

Hi Brian, the Sump gasket has recently been changed and is dry. I noticed a slow leak coming from the rear ccs when I done Done the manual conversion 3 yrs ago.
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darkchild
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Post Fri May 27, 2016 6:46 am

Brianmoooore wrote:Sure it's leaking? I've never seen a rear crank seal on an E30 that has failed yet, but I've seen plenty of M20 sump gaskets leaking at the rear.
Mine did. :(
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Brdjo
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Post Fri May 27, 2016 7:10 am

Brianmoooore wrote:Sure it's leaking? I've never seen a rear crank seal on an E30 that has failed yet, but I've seen plenty of M20 sump gaskets leaking at the rear.
+1, in 99% times, it is the sump gasket..
DanThe
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Post Fri May 27, 2016 4:55 pm

Brianmoooore wrote:Sure it's leaking? I've never seen a rear crank seal on an E30 that has failed yet, but I've seen plenty of M20 sump gaskets leaking at the rear.
I found a leaky rear oil seal on an M20 engine recently, the specialist who had worked on the car previously had fitted it back to front :)