Morris Minor Owners Club

i have a 1275 and it sprong a leek from the clutch houseing
takern the lump out
oil pump gaskit renewed still little leak
but on the crank its leaking as well from the oil thorwer
i have now takern the sump off and takern the bottom part of the thrower off but can not see what is making it leak i have notices there is no o ring at teh back end this normal ,can any one eles help on this
chris

Hi

Is the oil leak coming from the crankshaft scroll oil seal this can be converted to a proper modern type oil seal which is more effective.

Have you replaced the oil pump ? how old is it maybe worthwhile putting a new one on if its worn or as old as the engine could it be warped.

Hope my ideas helped.

James

Check breather system is ok - excess crankcase pressure will blow oil out.

Is the oil leak coming from the crankshaft scroll oil seal
please help me out dont know what this is
when i took the thing off its metal and in 2 halfs bothe metal and with a cut out like a trap around it look at pic please
oil pump is working fine just needs ajustimng by my error
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the oil peed out the stripped the engine to sort it and now ill i did was stand the engien on its back to see if the oil would leak out and yes it did <br><br>

Of course it does- it's a labyrinth seal and only works when the crank is spinning. Oil comes out here if the engine crankcase has any internal pressure - you need to MAKE SURE one of the breathers is connected to the carb inlet to ensure the engine eats it's own fumes. However - if the engine is badly worn and much fume is escaping past the rings - there is obviously a limit to what it can cope with! Heavy over haul required! The leaking will have absolutely nothing to do with the oil pump - the idea that it could be 'warped' is certainly novel!

Thankyou ecosse.

James

look like done it cleand all updde alittle smear of blue i the book says then changed the rocker cover put one on with a breather as well so now has 2 straight to the pancake
so been for a run to linford hall in munford fault i may still find the classic there but already gone
but thanks for the help
i just have never seen any thing like this before
and i am not willing to pay £70 plus for a convertion kit she can stay the way it was for years untill i get a bigger engine
cheers all chris

The conversion kit seals are not all that great. Rocker cover breather IS the best way forward - well done.

cheers mate would like to know what car from as the filter in same place as the mog one crank has a breather on it
dont seem to have a lot of pock i think i have had 85 that was pushing i have a standard carb still at the moemet
any help would be grate

You should have a breather coming from the timing case cover - and now you have added one from the rocker cover. If your carb has a brss inlet at the side - connect one of the breathers - probably the rocker cover breather - to that inlet so the engine breathes in all it's own fume.

I agree with BMC the crank seals are trying to keep oil back on a rather rough finished surface.Unless the flywheel boss is machined as well I think they are at best a waste of time.These problems are nearly always caused by crankcase pressure not the ability of the scroll.

Unless the main bearings are badly worn - then the floods of oil are just impossible for the scroll to cope with!