E36 328 - E46 330 Crank Conversion?

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  1. E36 328 - E46 330 Crank Conversion? 
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    Hi guys,

    I've been reading about the 330 crank mod, but there's a few things I'm not clear about:
    • Is the crank really a direct fit? (UK to UK spec)
    • Will the conrods or pistons need changing?
    • With/without a conrod/piton change, what will it do to the compression ratio?

    I suspect that the 328 conrods will be too long. I'm only considering this mod at this stage... I'm budgeting for a 4k spend, so it'll either go on making my 328 quick, but comfortable - and immaculate. Or I'll go for an OKish E36 M3.
     
     

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    you need rods, crank and pistons and it will need to be a steel or steel linered block as nikasil pistons are different
     
     

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    mikaveli (13-11-2009)

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    Thanks Hamish,

    I'm assuming the pistons are a different bore - and that I need the steel liners for the rebore?

    Couldn't I just retain my current pistons? Won't they fit on the 330 conrods?

    Also, does the M3 3.0 or Evo have swap-able parts in this area?
     
     

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    pistons are same diameter but nikasil pistons only fit nikasil block

    I have seen a photo of 328 and 330 pistons next to each other and the 328 sits higher and would protude a few mm above the block deck height

    your far better of using a steel block from a 325 vanos motor

    exhaust manifolds is about the only part fro euro m3 motor you could use
     
     

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    Ahh, that makes sense now. I'd assumed that they would have fitted shorter con-rods for the clearance problems - but instead it's the piston height.

    So basically, nikasil block = too much bother. Steel block = easy mod.
     
     

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    Quote Originally Posted by mikaveli View Post
    Ahh, that makes sense now. I'd assumed that they would have fitted shorter con-rods for the clearance problems - but instead it's the piston height.

    So basically, nikasil block = too much bother. Steel block = easy mod.
    What Hamish is saying is that the Nikasil pistons and rings are designed to run in a coated aluminium bore.

    The pistons from a steel lined or iron block are the ones you need to run in the M50 or M52 with liners.
     
     

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    Boostist (15-11-2009)

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    Quote Originally Posted by alpina527 View Post
    What Hamish is saying is that the Nikasil pistons and rings are designed to run in a coated aluminium bore.

    The pistons from a steel lined or iron block are the ones you need to run in the M50 or M52 with liners.
    Thanks alpina. I'm just gathering info on it all at this stage.

    The only definite mod I want is your M50/BBTB - just gotta wait for the mrs to let me spend the money.... maybe if I buy her a purse first?
     
     

  12. 4 grand to spend could get u ths !!!! 
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    Hey Mate

    Alot of people talking about this mod lately. 4 grand is alot of money to spend on making ur motor jet fighter fast.......so if you are feeling brave check this site out . Just don't tell the missus. LOL

    http://www.schmiedmann.com/3_series/...ge39.htm#pg555


    Cheers Donut.............
     
     

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