can i change the diff bearings and side cover bushes with the engine in the car??
or can the diff only be removed with the engine out?

i noticed there if a fair bit of slop in the bearings causing oil to leak out the side cover seal

Regards,
Matt

That slop is not the diff ball bearings, it is the bronze bushes in the side covers.
Yes you can fix this in the car, you need to drain oilz, remove covers, press new bushes into the covers, then get their bores machined to fit your pot joints/output yokes.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

thats what i like to hear
an easy cheap fix

thanks

I wondered about that rh pot joint. the left was ok but the right hmmmm
As doc said if you need new one ,get one and bring it up and I will fit and machine it for you. bring the pot joint as well.
At least it runs better than the 1275

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Research is the difference between speculation and investment. Anyone who copys some one else will always be second
www.minisprintgt.com

Do you think the boring could be done on a lathe? Or would a mill be best?

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Dean Hutton's first car was a Mini.

definately on a lathe. a mill is not designed for that type of job.
when matt put the pot joint in he may have dislodged the seal spring

_________________
Research is the difference between speculation and investment. Anyone who copys some one else will always be second
www.minisprintgt.com

hmm thats a point and chance that spring could make its way past the bush and do some damage?

I doubt there is room for the spring to get past the bush.
Clearance is only .001" approx when new.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Your right there doc. the gearbox is A plus , and matt changed the pot joints over. the original rh one was loose when I checked it.

The other joints are worn as well so it probably needs new bushes. Matt put it in and I just wondered if he dislodged the seal spring. Unfortuneatley I did not get chance to check it over after they were fitted as I had to go out.
He has put this second hand 998 eng /box into his car until he rebuilds his 1275. It was a rush job.

_________________
Research is the difference between speculation and investment. Anyone who copys some one else will always be second
www.minisprintgt.com

for a rush job the engine is great.

just got the one little issue so far.

but ill do the right thing and fix it this week.