What the best colour code for a worked 1275 's' motor? I currently have a blue spring would it be strong enough or should i go for orange? Does it matter that much or do they slip if not right? cheers

Orange is pretty strong (Race/rally) type thing,,, if you choose to use it then STAY OFF the clutch as much as possible & try not to ride it at all.

The grey is basically the strongest of the factory type & they are pretty well full race only & i definately don`t recomend them for road use at all

the Dark blue should be fine for you ...---> as long as it`s all sweet & set up right.

Which-ever one you decide on, make sure you have it all set up so that the throw out bearing isn`t running on the clutch the whole dam time,,, the amount of throw out bearings that people commonly & frequently replace is simply due to mal adjustment (over adjustment) BECAUSE of another "THROW" or inadequate "TRAVEL" problem that hasn`t been sorted properly.

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

Thanks for that miniman,,,I'll stick with the blue one i have..just thought i'd ask the question before i put it in...Is there anything i should know putting a new timken thrust bearing on, ive never done it before? cheers

It goes on the same as the later one does. But lasts longer.

Don't bash on the thrust face when fitting it, use a press.

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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.

Any clearances or just flush with the plunger 'rod'? cheers

Just noticed it on a shouldered shaft should be no drama's..thanks for all your help guys...

I agree with Matt, a dark blue diaphragm should be fine. I ran one in my well worked 1310 for years.

Make sure diaphragm spring is flat when bolted up. see here- http://www.minimania.com/web/DisplayID/ ... ticleV.cfm

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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.

Thanks DOC!!

With an unidentified plate (the paint spot is missing) can I measure the diaphragm spring thickness wit ha micrometer to get an idea of what it is? or does the plate's metalurgy/design change?

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

Measure it and I'll measure a blue dot one too.

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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.

I measured the one I have here (from the S engine) and got and average around the plate of .090 of an inch. This was a little in from the inner edge because of the wear that occurs here.

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.