E36 323i more power(Inlet manifold swap)

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  1. E36 323i more power(Inlet manifold swap) 
    #1
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    Can anyone tell me exactly what the manifold swap is to gain more power from the 323i 2.5 engine? thanks.
     
     

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    I can do better, talk to this man here Alpina527 http://www.bimmerforums.co.uk/member.php?u=11349

    He does the manifolds and has done for some time and can sort you out.

    The 323i was originally fitted with the manifold off the 320i engine, which has smaller inlet tracts than the M50 inlet manifold of a 325i, fitting the manifold with a remap will see you pushing +20bhp extra
     
     

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    hotrodboogie (26-04-2009)

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    Your a good man Ronnie, i had a feeling you might come up trumps cheers
     
     

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    No problems , I'll move this to the tuning section for you

    And have a read here http://www.bmconversions.co.uk/home/m50manifold.html
     
     

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    Quote Originally Posted by Ronnie View Post
    No problems , I'll move this to the tuning section for you

    And have a read here http://www.bmconversions.co.uk/home/m50manifold.html
    Just for ref, this kit is nothing like mine. I actually re machine the M50 manifold to resemble the M52 manifold on the underside so everything just bolts on in exactly the same way as standard. No T pieces, tie wraps, glue etc required
     
     

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    Ronnie (30-04-2009)

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    hey i have a 323i also, will at some point get one of these off of you if that's cool.
    so how much will it hurt me in pounds???
     
     

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    I will send you some details
     
     

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    Buy the alpina 527 kit. Dont muck about with zip ties and extra pipes!!!!!!!!!
     
     

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    Hi there guys,

    I actually tried to do a swap but it didnt fit as my mechanic said the idle valve's were not the same and there were other fitting issues. Obviously not a straight swap. Damn!

    Now i need advice on what to do, should I keep the 325 manifold and get some1 to professionaly fit it or should i sell it on ebay and buy the kit? Cheapest option would suit me best, but I know that isnt always the easiest.

    Any advice would be much appreciated.

    Cheers
     
     

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    Should really have started your own topic

    Here's a DIY guide, there are a few others out there http://www.emotors.ca/articles/40.aspx

    As to what's the cheapest option it depends on how much your mechanic's labour charges are! Alpina527 may do you a part ex on your M50 manifold for one of his modified ones that will fit straight on if that helps you out? Would look a lot neater in the engine bay and you wouldn't have to worry about air leaks afterwards, also might help keep the mechanic on your side for next time you need their help!

    Ian
     
     

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