MK1 S Block
Can any body tell me when the last of the MK1 of the Mk1 blocks finished
or when the first of the MK2 of the MK1 blocks started an engine number
would be very helpfull, thanks
Graham Russell

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"It's better to be not informed than ill-informed"

Hi Graham

Try this link

Kiwiinwgtn

http://www.ozcooper.com.au/build_dates.htm

HI Kiwiinwgtn
Thanks for that but some where in the early production of the MK1 blockl
they changed to a much stronger block .
Graham Russell

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"It's better to be not informed than ill-informed"

Graham,
I'd PM `graham in aus'.

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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 Kev

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"It's better to be not informed than ill-informed"

GR, are you referring to the thick vs thin flange blocks here?

Have you got the book the Original Mini Cooper by John Parnel

in it has a reference to engines in Sep 65 9f-sa-y38365 they made some changes
"filter mounting face on cylinder block now machined instead of dieast"

Its the only ref I could find

TA

Bernard

Yeah thats a good point, I bought a gt off Paul Gulson some 20 odd years ago and it had a thin flange block in it? and I have a Thick flange MK1 block too.... Is it possible they made them side by side? Its a bit strange that they would,, but this is BMC/Leyland as far as engine numbers go,,, as far as I know the MK1 prefixes were all 9FSAY and the MK2's are 9FXEY.. Could be wrong

I doubt that they were made side by side and I have seen some of Pauls previous work so I guess I know what I want to say but I can't really say what I think.

I think they changed the casting patterns in 1969 but I can't get any closer than that.

Clubman GT?? Did the block have side plates? or an earlier one with the Cooper S Block?

Yeah, what you say about MKI and MKII Thick and Thin Flange, I've seen the same.

Hey Nice Mk1 Block,,, oh look---> someone has machined the top of the block & stamped a GT engine number into it

Opps,,, did i say all that out loud???

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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.

There was a running change early on in the Mk1s to strengthen the centre main area, as it used to break out in competition. I don't think this was at the start of the thick flange, that was later.
Sorry I'm going on memory here, no numbers...

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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.

Morris 1100,

You don't need to say a word I know what you are talking about. The idea that it might not be the original engine did cross my mind but it wasn't one of his record holding race cars, it was a daily drive so I think it might have been the original,, there were no mods done to it (although knowing you know who he probably took any go fast parts off and sold me his sh!t) I can't remember but I think it was that car that I drove for a week and I broke the crank!!!

I thought you'd take an interest in this thread,, I'm sure you have a stash of paper work from BMC head office down there!

HI GTMOWOG
NO i'm not talking obout the flange i'm talking obout the strength of the centre main the later MK1 had no webbing around the centre main it was solid because the had a problem pulling the centre main out at revs obove 7400 rpm
Graham Russell

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"It's better to be not informed than ill-informed"

Now I read somewhere that you are friends with the previous owner Matt... Maybe you can ask that bastard what he did with the engine number!!!