M50 Auto

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bimanut
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Wed Feb 10, 2010 4:24 pm

For my M50 swap i`m using an engine from an E36 auto.
Somebody mentiond to me that i`d need a spigot bearing for which ever gbox that i`ll be using which is an M40 one.

Asked cotswold for a price and he said is it the flywheel bearing i need cuz there is two different sizes and asked for the chassis number but i never had the car,i brought a lump & box for spares for my 1.8 cab.

What i need to know is how do i work out which bearing i need?
Apart from ordering both,being a dolite for the last 6mths ordering both isnt realy an option.I`m just slowly but surely building my bits up.

Cook or Dan where are you? you seem to know everything i`ve asked so far. :D

Thanks.

Chris.
DanThe
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Wed Feb 10, 2010 6:57 pm

To find out what size bearing you need measure the diameter of the input shaft on your gearbox, it should be 12mm diameter, the M50 bearings/box shafts are 15mm
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bimanut
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Wed Feb 10, 2010 7:59 pm

Cheers mate

Just been outside and measured the shaft and it was 15mm.
Its deffo an M40 box, i took it off the lump.
Cant say what year it came out of.The bloke had done an M40 to M42 swap and i brought the lot for £20 off e bay with loads of history (he was gutted) :)

Measured an M20 one and that was 12mm

What do you reckon
M50 bearing?
DanThe
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Wed Feb 10, 2010 9:01 pm

Yep, all the M50's ive seen have used 15mm bearings, the sizes are given in the parts description so if you tell them the measurement you cant go wrong
Bob_S
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Thu Feb 11, 2010 12:26 pm

is it needed? Dan is this what we couldnt find putting the box on your 3ltr?
Bollocks to this 24v scrap!
DanThe
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Thu Feb 11, 2010 12:29 pm

It is needed yes, this is what I was going on about fitting a 12mm shaft into a 15mm bearing is just wrong!
Not to worry though, its got a big f*ck off ZF box on the back of it now :)
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