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General Forum : URGENT ADVICE PLS!What model crankshaft belongs 2

- BMW E21 Community
   - General Forum
      - URGENT ADVICE PLS!What model crankshaft belongs 2
ichiwan2   Posted Wednesday, Dec 6th 4:40pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 246
   
Kuala Lumpur, Malaysia
BMW320/6(e21)
Part number 1280969

Supposedly came out of an e21 323i Auto. Dunno what year.

Checked realoem and part number does not exist.

The 323i crankshaft part no: 1271889

For the 320/6: 1722574 or 1271888 (latter supposedly discontinued/nla)

So have I been duped or do I have some exotic crankshaft? Just wanna know the stroke length.

If its not the crankshaft for the 323i, it screws up my stroker project budget.

URGENT advice please, as I have a lead on another 323i crankshaft. Don't want to end up with one too many crankshafts...

Only consolation - the block has not been re-bored before - pistons are the 79.98mm




imaradiostar   Posted Wednesday, Dec 6th 8:58pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 962
   
Nashville, TN
81 323i, 82 525i, 85 524td, 90 535i
why not just measure the stroke?

jamie

ichiwan2   Posted Thursday, Dec 7th 3:49pm [Edit] [Quote] [IMS] [View car]
Member
Post nr. 247
   
Kuala Lumpur, Malaysia
BMW320/6(e21)
The crank has been taken off the block. Not sure how accurate measurement would be since the difference in stroke is only about 10mm. It would mean a 5mm distance between the main shaft and the conrod pivot thingy.

Anyways, had a look at the pistons and they are flat topped. I am guessing with slightly more confidence that it is actually a b23 crank. Will know in a few days when my mech takes out the crank from my 320.

Everything about the car says its e21, except for the block size description - which says 2.0 litres and the very different crank part no.

Will know better soon.

Thanks for the suggestion.

Cheers!


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