Dose anyone have an idea what this plate/bracket would be for on this engine?


It's bolted behind the timing cover and has curved rubber pads on each side of the engine. I've never seen anything like it before and it looks more like a "factory" item and not some home built thing.

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Respect mine and I'll respect yours.

It is the engine mount for a Morris 1100.

... also Morris 1100S.

For use in a Mini just take Mr Anglegrinder or Mr Oxy and cut both the sides off it.

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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.

&,,, if you have a look at the diff housing it will have 4x coarse thread (UNC) """side""" bolts for the shifter "Sandwhich-mount" to bolt to

& also--> the diff ratio will most probably be a 4.1:1 or a 4.2:1

&

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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.

...and the gearbox is 3 synchro with the usual (non-S) crap ratios.
POS these days, find a Mini K 4 synchro box and use that (but put S gears + a 3.44 diff in).

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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.

what is the easiest way to tell what diff ratio a box has?

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Respect mine and I'll respect yours.

If it's off the motor, count the pinion teeth and crownwheel teeth. A spot of white paint on a tooth makes it easy.

18/62 is a 3.444
17/62 is a 3.647
17/64 is a 3.765

If the pinion is 15T, it's either a 4.13 or a 4.26. Too low geared for a Mini (or a Moke on 10" wheels)

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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.

Those ratios are great, is their a list of the complete ratio range for minis and mokes?
Also how do you figure out what RPM you'll do at 100kmph with a particular diff ratio?

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Respect mine and I'll respect yours.

That shown above ^^^ is pretty much the whole range that was sold over here. There are a few others available from UK:


4.33
3.938
3.211
3.105
2.95
2.76


with 10" wheels,
3.444 diff is about 16.1 MPH/1000
3.647 diff is 23.91 KMH/1000 (calcs from my GPS, 4600 rpm @ 110KMH)

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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.