http://www.minimania.com/web/SCatagory/ ... ticleV.cfm

The rest of the article is there 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.

is there any info on this? ive heard of the magical square 850 but never found any details on it...?

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Here am I sitting in my tin can far above the Moon
Planet Earth is blue and there's nothing I can do...



“A turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.” - Jeremy Clarkson

Isnt it simply bore vs stroke? ie, large bore short stroke ?? Similar to a 970 (if memory serves)

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Click here for the Turbo Conversion Thread!

tis where bore=stroke i thought...?

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Here am I sitting in my tin can far above the Moon
Planet Earth is blue and there's nothing I can do...



“A turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.” - Jeremy Clarkson

and by the looks of it, the 970 and 1071 were unique to the a series in that they were an oversquare engine where the bore was more than the stroke...

A square 1098 would be awesome, but the huge stroke would make it tough (read: impossible) to fit pistons 3.296"(83.72mm) when the original bore is only 2.543" (64.58mm)

a 998 square is much closer...

though easiest would be a 1071 or 970...

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Here am I sitting in my tin can far above the Moon
Planet Earth is blue and there's nothing I can do...



“A turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.” - Jeremy Clarkson

Lets just say that about 130 thou came off the top of the block , 850 thicktail crank in a 998 block , I,m not really allowed to say much more

Its the 63 850 in front of the Sports 850 , its driven hard by a driver who only drives hard




Anyway back to 1100,s , yes it would be hard to make a square 1100 but you could make it "squarer" it thats a word , the aim would be to maximize the available torque , the compression up to about 9:7 / 9:8.1 , a cam like the Kent 256 with 1.3 rockers , 3:44.1 diff would be fine , straight cut gears to minimize power loss , yes it would be an interesting process to focus only on torque rather than HP

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It would have been easy and cheaper to just get a 1275 right?

In an original 63 850 ? You are kidding , no Mr M was not interested in a 1275, only period modifications , he is very particular when it comes to that , it must be period and it must be right , to go to 1275 he would of course needed disks , thats a no no , 850 motor ( well square ) and single leading drums only

Anyway , back to 1100,s , I,ll repeat myself after the interruption , yes it would be hard to make a square 1100 but you could make it "squarer" it thats a word , the aim would be to maximize the available torque , the compression up to about 9:7 / 9:8.1 , a cam like the Kent 256 with 1.3 rockers , 3:44.1 diff would be fine , straight cut gears to minimize power loss , yes it would be an interesting process to focus only on torque rather than HP


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50hp, single leading shoes?

Guy has a death wish.

Also, I don't understand the faux-secrecy over how he made it square. Unless he's selling them commercially (which obviously he isn't), then there's no reason for keeping the engineering hush hush.

Unless the details don't exist because the engine doesn't actually make 50hp and he's worried someone'll call shenanigans if too much detail gets out.

PM GreyGhost then , I dare you , don,t be rude though you wont get a reply, Mr M doesn,t like strangers

http://www.ausmini.com/forums/profile.p ... le&u=25300



Again another unnecessary interruption , back to 1100,s please !!!!!!!!!!!!

.

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Does it sacrifice economy [alot] working an 1100 as seggested?

Im in the same boat, my [supposed] 1100 is on its last legs before a rebuild, but being an 63 850 im undecided whether or not to go with originality, 850 (squared now by the sounds of it!) tickled 1100 or replacement 1275?
That in mind i have both the 1100 and an 850 to play with haha

Very interesting thread indeed

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'63 850/1100 + more cooper goodies

If you want a (over)square 1100, start with an S block and put a Seth Efrikan 1100 crank in it. It is a big journal crank with around 69?mm stroke.
They were a shortened stroke 1275 really.
PM minicranks in UnZud, he might still have one- or none left..

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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.

Nice one , would be interesting to have a look at one , I would hazard to guess that it might be relatively easy to find one in SA but the postage would be

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