sublimemike
Well-known user
Checked the manual out and will definitely be needing a ramp. Anyone done one
Rear crankshaft mains oil seal on big bla
- Thread starter sublimemike
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sublimemike
Well-known user
oopps , one of these and know rough time to allow barring no issues?
sublimemike
Well-known user
Just to be clear - anyone know rough time to allow to change rear mains crankshaft oil seal on a big block. I have limited access to a ramp on a saturday. Someone must have done one?
Thanks
Thanks
sublimemike
Well-known user
Yes..exactly. No crank removal thankfully.
UK67
CCCUK Member
Can only speak for a small block but it's quite straightforward and took me approx 3 hours lying on my back. Only advice I would give is after you've removed the rear bearing cap also loosen all the other caps. This will allow the crank to drop very slightly giving a little more clearance when you slide into position the top half of the new seal. I didnt do this and maybe thats why I still have a slight leak 
sublimemike
Well-known user
That's handy advice. Yes the top seal was my concern with removal/ replace.
Thanks
Thanks