m52 gbox, prop, flywheel questions

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matt86
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Post Thu Mar 19, 2015 10:11 pm

Hi I have a m10 engine, gearbox, prop diff etc. The engine and gearbox has been removed from car everything else is still there.

I'm collecting an m52 engine including ancillaries in one week.

My question is what will I need to complete the conversion in a cost effective but also quality way.

Can the existing diff, prop, gearbox be used with the m52 engine. Also if this would work what's the best options for flywheel and clutch? Its my first time. Lol so want to make life as easy as possible.

Thanks in advance. :D
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bosers
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Post Fri Mar 20, 2015 8:44 pm

Check out the Wiki mate. Its all spelled out on there, step by step.
jmc330i
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Post Fri Mar 20, 2015 9:34 pm

M10 gearbox won't bolt upto the M52. The M10 shares the bellhousing bolt pattern with the M30 engine.
James
'91 325i Sport
'93 318i touring 16v
matt86
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Post Fri Mar 20, 2015 10:16 pm

jmc330i wrote:M10 gearbox won't bolt upto the M52. The M10 shares the bellhousing bolt pattern with the M30 engine.
Thanks, what are the best options I want to make life as easy as possible, what's the best option out of the i.s gearbox, m20 and m52 and depending on which i use what are the options for diff, prop, clutch and flywheel.

Thank you
DanThe
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Post Fri Mar 20, 2015 11:14 pm

The best gearbox to use is what comes on the back of the M52, this means you need to spend money on a different ratio diff though
jmc330i
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Post Fri Mar 20, 2015 11:24 pm

Get your beer out and have a read...

http://www.e30zone.net/e30zonewiki/inde ... Swap_-_M5x


The M42 gearbox is probably the easiest and cheapest way if you've already got a suitable diff but if you need to buy a diff anyway, you may as well get a 3.15:1 diff (or similar) and use the M52 box.
The M52 ZF box is the best to use and spending the extra money to use it will make for a nicer car.
James
'91 325i Sport
'93 318i touring 16v
matt86
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Post Sat Mar 21, 2015 9:11 pm

Thanks guys. :D
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mattxr2
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Post Sat Mar 21, 2015 10:14 pm

Iv killed 4 m42 gearboxes in my drifter, personally I think a road car will be fine and you don't have to mess with diff ratios and 320 props are cheaper

Iv ran a zf box for 4 or 5 months and it's pretty much dead now, may be the shifter bushes though