m40 to m42 auto to manual conversion help needed

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chappers7
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Fri Feb 10, 2012 7:52 pm

looking for a suitible doner engine for a m42 conversion, can i use an auto engine then put my flywheel and gearbox on it or will i have issues with ecu's etc cheers
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Brianmoooore
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Fri Feb 10, 2012 9:07 pm

ECU won't give any problems, although the gearbox input shaft will, unless you fit a correctly sized spigot bearing into the end of the crankshaft.
rix313
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Fri Feb 10, 2012 9:08 pm

:mad:

You have an M40 auto and want to convert it to M42 manual?

If an engine comes from an auto car, the auto has to do with the gearbox, not the engine so it doesn't matter.

If your car is an auto you will need to fit a manual pedal box to allow for the clutch pedal and smaller brake pedal. You will then have to fit the appropriate clutch master and slave cylinders and pipe work.
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Brianmoooore
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Fri Feb 10, 2012 9:45 pm

rix313 wrote::mad:

You have an M40 auto and want to convert it to M42 manual?

If an engine comes from an auto car, the auto has to do with the gearbox, not the engine so it doesn't matter.

If your car is an auto you will need to fit a manual pedal box to allow for the clutch pedal and smaller brake pedal. You will then have to fit the appropriate clutch master and slave cylinders and pipe work.
No, he has an M40 manual and wants to fit an engine from a M42 auto. At least that's how I read it.
chappers7
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Sat Feb 11, 2012 11:24 am

No, he has an M40 manual and wants to fit an engine from a M42 auto. At least that's how I read it.

thaqts right, having diffeiculty sourcing a manual engine thats why i asked
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Brianmoooore
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Sat Feb 11, 2012 1:25 pm

So what's this M42 engine coming from? No UK M42 engined E30 ever left the factory with an auto box attached to it.
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