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what size over bore are these?
https://www.ausmini.com/forums/viewtopic.php?f=2&t=94636
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Author:  TK [ Fri Jan 13, 2017 3:04 pm ]
Post subject:  what size over bore are these?

A couple of days ago I picked up a batch of Mk 1 and Mk 2 Cooper S blocks with matching caps to add to the collection. They all have surface very minor rust & years of dust on the bores. What size are they?

70.58mm
71.55mm
71.55mm
70.55mm
71.36mm

many thanks

Author:  timmy201 [ Fri Jan 13, 2017 3:23 pm ]
Post subject:  Re: what size over bore are these?

70.58mm - STD
71.55mm - +040
71.55mm - +040
70.55mm - STD
71.36mm - +030

Author:  gtogreen1969 [ Fri Jan 13, 2017 3:26 pm ]
Post subject:  Re: what size over bore are these?

Reselling any MK2 S blocks ? :)

Author:  TK [ Fri Jan 13, 2017 3:26 pm ]
Post subject:  Re: what size over bore are these?

Ooooh cool. Thanks timmy201.

Author:  GundyGuy [ Fri Jan 13, 2017 4:28 pm ]
Post subject:  Re: what size over bore are these?

gtogreen1969 wrote:
Reselling any MK2 S blocks ? :)

Does this guy have some MK2 S Blocks

Author:  BBY755 [ Fri Jan 13, 2017 4:34 pm ]
Post subject:  Re: what size over bore are these?

Selling any Mk1 S blocks??????

Author:  TK [ Fri Jan 13, 2017 7:26 pm ]
Post subject:  Re: what size over bore are these?

Not at this stage.

Author:  TheMiniMan [ Sat Jan 14, 2017 8:56 am ]
Post subject:  Re: what size over bore are these?

i have quite a few Mk1 "S" blocks
0407 135 656

Author:  Asiemek [ Sat Jan 14, 2017 6:23 pm ]
Post subject:  Re: what size over bore are these?

i have 2 Mk1 blocks one is 72mm and the other is 74mm. are they useable?.

Author:  drmini in aust [ Sat Jan 14, 2017 7:54 pm ]
Post subject:  Re: what size over bore are these?

74 is on the limit, but at 72 you have 72.5, 73.0, and 73.5 left. Without offset boring.
The 72.5mm are Graham Russell's pistons.

Author:  simon k [ Sat Jan 14, 2017 8:54 pm ]
Post subject:  Re: what size over bore are these?

drmini in aust wrote:
74 is on the limit, but at 72 you have 72.5, 73.0, and 73.5 left. Without offset boring.
The 72.5mm are Graham Russell's pistons.


GR told me he can sleeve them back to standard - can that be done when they're at 74?

Author:  drmini in aust [ Sun Jan 15, 2017 6:44 am ]
Post subject:  Re: what size over bore are these?

simon k wrote:
drmini in aust wrote:
74 is on the limit, but at 72 you have 72.5, 73.0, and 73.5 left. Without offset boring.
The 72.5mm are Graham Russell's pistons.


GR told me he can sleeve them back to standard - can that be done when they're at 74?

Need to ask him, I know he can do this from 73.5mm.
Waste of money unless it's an S block, IMO.

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