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Home > Technical Chat > salisbury diffs and late model casings

fastcarl

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Fastest A Series Mini in the World

leeds/wakefield.

11th Feb, 2007 at 05:03:05pm

well ive just got around to looking at a gearbox i have,
its a JK dox in a late rod change , now i tried fitting the said diff and it obviously needs some releiving to say the least, the crown wheel side is no problem but the other side needs so much taking out of the casing it looks like i'm sure to break through .

the offending area is adjacent to the bearing, the diff steps up in dia within a few mm of the inner most face of the bearing and needs a hugging taken out,

now iv'e almost decided its not going to go, so may need a different diff, a later design type that took the thin casing in to consideration.

but my question is , has anyone of you boys in the preasent or past got one to fit,??

ive had a look in the old remote casing it came from and had had a lot of releiving,the casing on the later diff case appears to be just too thin .


carl


carl

Edited by fastcarl on 11th Feb, 2007.

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paul wiginton
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Milton Keynes

11th Feb, 2007 at 05:15:12pm

Ive got a Salisbury, Yes you need to take shit loads out of the g/box case and the diff cover. You do come very close to going through. I helped mine a bit by fitting high grade button head bolts to the crownwheel. Careful shimming is a must on both sides of the diff, no just one side as per the norm. Do be careful as the crownwheel could touch the mainshaft bearing.
Paul

I seriously doubt it!

Gavin Wakely

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Milton Keynes

12th Feb, 2007 at 07:02:52pm

I agree with Paul totally,
I've just put on into a turbo box and had alot of the afor mentioned problems. Carefull measureing / grinding of case / shimming on both sides was necassery, aswell as reducing head hieght to 4 mm on the 8 bolts, wich hold the Salisbury together.
I'm sure it has already been done but the Salisbury itself does require machining to fit into any mini box (Large chamfer on the non crownwheel side)

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If it a'nt broke don't fix it !!!!!!!!!!!!!!!!!!!!!

johnK

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Norfolk

12th Feb, 2007 at 07:20:37pm

nice to see you back on her Gav!


we'll have to comapre 60ft times this year with your "slippers" and my tc controlled open effort

JK

If Carling made Mini engines
it would probably be like this one!

fastcarl

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Fastest A Series Mini in the World

leeds/wakefield.

13th Feb, 2007 at 05:45:55pm


On 12th of Feb, 2007 at 07:02pm Gavin Wakely said:
I agree with Paul totally,
I've just put on into a turbo box and had alot of the afor mentioned problems. Carefull measureing / grinding of case / shimming on both sides was necassery, aswell as reducing head hieght to 4 mm on the 8 bolts, wich hold the Salisbury together.
I'm sure it has already been done but the Salisbury itself does require machining to fit into any mini box (Large chamfer on the non crownwheel side)


all the above is becoming more apparent day by the day,lol

i just reread your post Gav, and is machining the diff a good idea, its not been done up to now, i see what your suggesting, gut never having had one in bits i don't know how thick the diff housing is around said area, i'll assume its thick , and that youv'e had no problems,it does seen like a ray of ligth i must say,
i was looking at build up weld to the outside of the diff housing around the offending area just in case i had to really had to rem ove lots, , but the diff maching sounds like it may make thing a bit easier,

carl

Edited by fastcarl on 13th Feb, 2007.

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minimark

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newcastle

13th Feb, 2007 at 06:05:48pm

die grind away carl .... you need to take ucking loads off

Everyone knows that instructions only have to be read if the thing doesn't work....

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