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SuperCooper
PostPosted: Tue Mar 17, 2015 8:31 pm 
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Hey guys. Mk2 S plastic cltch master cyl bore is .750?

And brake .700?

Other way round for tin master cylinders right?

Cheers.

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drmini in aust
PostPosted: Tue Mar 17, 2015 9:07 pm 
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Nope, all single line brake ones were .70" (except 850 and 998 Cooper).
Some Clubbies? had a 0.70" clutch one but they are effing useless once you get a bit of wear in the linkage. If you have one on a car now I'd bin it and fit a 0.75" one.

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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. :mrgreen:
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SuperCooper
PostPosted: Tue Mar 17, 2015 9:30 pm 
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Thanks Kev. I do have them set up correct then! Just checking.

Some websites say otherwise when it comes to aussie plastic reservoir s.

Cheers.

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SuperCooper
PostPosted: Tue Mar 17, 2015 10:20 pm 
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http://www.classicmotoring.net.au/cmos/ ... inder.html

Australian Minis from around 1969 to 1976 were fitted with plastic tank master cylinders, made by either Lockheed or Girlock. Lockheed master cylinders have a cast iron body and the Girlock master cylinders have an alloy body, but are otherwise the same. In contrast to the tin tank master cylinders, plastic tank master cylinders are 0.75" bore diameter for the brake, and 0.7" for the clutch.

This style of master cylinder is no longer available new.

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drmini in aust
PostPosted: Wed Mar 18, 2015 6:37 am 
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SuperCooper wrote:
http://www.classicmotoring.net.au/cmos/faqs/mastercylinder.html

Australian Minis from around 1969 to 1976 were fitted with plastic tank master cylinders, made by either Lockheed or Girlock. Lockheed master cylinders have a cast iron body and the Girlock master cylinders have an alloy body, but are otherwise the same. In contrast to the tin tank master cylinders, plastic tank master cylinders are 0.75" bore diameter for the brake, and 0.7" for the clutch.

This style of master cylinder is no longer available new.

That information is wrong. The bore sizes are arse about.
For evidence, ALL Cooper 1275S had a .70" bore brake MC.

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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. :mrgreen:
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