325i manual conversion problems!

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kms_racing
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Thu Oct 16, 2008 9:30 pm

iv just started a manual conversion on my 87 325i ....... easy apart from it wont start ! the auto box had 2 sensors ,what seamed to be crank angle sensors on the starter motor side of the box i drilled the holes for them , put a trigger pick up onto the fly wheel but cant get it to spark
i have been told by a local bmw specisist that i need a early box and fly wheel to acomidate the sesors and to have the trigger pickup .... or is there a easer / cheaper way of geting around this ?

please help me!

cheers nick
town325i
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Thu Oct 16, 2008 9:33 pm

the only other was is change the front crank toothed pully and put a crank senser on the front of the engine you may need a different engine loom for this too
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Brianmoooore
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Thu Oct 16, 2008 9:39 pm

Don't even attempt to use the primitive early system! Fit the crank pulley, crank position sensor, engine loom, oil pressure switch and ECU from a facelift 320 or 325 with a 55 pin ECU. If you use the 320 ECU, you ill need to fit a 325 chip to it.
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kms_racing
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Fri Oct 17, 2008 12:29 am

cheers for the replys
Brianmoooore wrote:Don't even attempt to use the primitive early system! Fit the crank pulley, crank position sensor, engine loom, oil pressure switch and ECU from a facelift 320 or 325 with a 55 pin ECU. If you use the 320 ECU, you ill need to fit a 325 chip to it.
how hard would it be to do so .. im a very mechanicle person but i have not got a great understanding with elecrics.
wiring wise is it just a plug and play affair :D
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Brianmoooore
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Fri Oct 17, 2008 12:43 am

Plug and play, depending on whether you have the late type 20 pin engine loom socket in your car. If not, the socket needs changing, plus a simple bit of rewiring.
Also check out my 'wiring warning' sticky in the engine swaps forum.
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kms_racing
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Fri Oct 17, 2008 6:56 pm

where abouts would i find this socket that you speak of , is it the one on the bulkhead just behind the inlet
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kms_racing
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Mon Oct 20, 2008 12:20 pm

i decided that im going to change the box for the moment as a mate has just given me the right box, i just need the right flywheel with the trigger pickup on .... would tacking a small strip of steel to the flywheel suffice


cheers nick
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Brianmoooore
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Mon Oct 20, 2008 1:54 pm

Brianmoooore wrote:Don't even attempt to use the primitive early system!
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kms_racing
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Mon Oct 20, 2008 6:36 pm

lol ..... it gets my car back on the road for the moment .

just out of intrest whats the problem with the "early primitive system "

nick
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