E36 325i Turbo Conversion Help Needed!

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  1. E36 325i Turbo Conversion Help Needed! 
    #1
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    Alexdj2k's Car Details
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    Hi, new to the forum and could really do with some advice on turbocharging my E36 325i Coupe M50B25 1994 model.

    Ive been looking extensively for a manifold that will be suitable for a RHD vehicle and fit a T3/4 hybrid or GT35 turbocharger. There seem to be plenty of cheap manifolds on ebay but look pretty cheaply made and not suitable for RHD. But on the other hand I cant really stretch to a custom made manifold (£800 - 1200). Does anyone know where I can get a good quality RHD turbo manifold at a sensible price? Would it need to be a top mount unit?

    Also I'm aiming for for around 320bhp+, is this realistic? and apart from a low compression headgasket the engine will be standard. I will be using a fairly large intercooler to keep the intake charge temperature down.

    I understand that this is not going to be a cheap conversion for a reliable set up but would just like to keep costs down where possible but not at the cost of reliability.


    Any help / advice on this is much appreciated!

    Cheers, Alex
     
     

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    #2
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    325icoupe-shaun's Car Details
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    will be good to see what people think on this as i am thinking of doing it myself. saves me writing up a thread
     
     

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    siliconeshane's Car Details
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    That will be a beast!!! Think i could do it to the 320i Touring? that would turn a few heads lol
     
     

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    #4
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    gstuning's Car Details
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    I don´t think there are any manifolds around right now . but come this summer there might be.

    For almost all power outputs for a M50B25 i´d reccomend ARP studs and MLS gasket to keep the head in place and lower compression.

    Other then that the engine will be just fine.

    GT35 is abit large for 320hp. You´d better be looking for something with a compressor inducer of about 55-60mm.
     
     

  7. Help with ur project 
    #5
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    DonutMan1's Car Details
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    Ill will try to keep this a brief as possible mate. Read into this before spending any money. I would agree the turbo ur choosing is way too big. I'll give u these links. Have a look and get a good undestanding of what you want and how it all works. Try to get some sound advice from people who have done it.

    http://www.turbobygarrett.com/turbob...o_tech101.html

    http://www.gnttype.org/techarea/turbo/intercooler.html


    There's lots to learn and some of it is not easy.I think a target of 400 is more realisic and ur engine can eay handle it no probs. Be ready for the heart eche and restless ngts, not forgetting the empty wallet. LOL

    Cheers Donut
    Last edited by DonutMan1; 25-05-2010 at 22:43.
     
     

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    #6
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    stickboy's Car Details
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    i have had a look inside my 1992 ecu for a non vanos 2.0 engine today a found that the chip is a plug and play version and not soldered in so changing it for a remappable chip is perhaps an option for anyone planning on going down the forced induction route this ecu also works on my 325 non vanos engine so maybe the chip in the 325 is the same non soldered or as we could change the chip in the 2.0 ecu it wouldnt mater from what car it was for. I also work for a custom exhaust manufacturing company and we do make turbo manifolds and systems so this might be a route my 325 might be going but i have also been offered an m5 lump so it a tough choice atmn
     
     

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    #7
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    Alexdj2k's Car Details
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    Cheers for the help guys, is good to know that the engine should be able to take it, will do further research into the turbo selection and will have to find somewhere to get the manifold made up. Thanks, Alex
     
     

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    use a t4 and add a oil cooler and take ur oil feed from that if u run it at .6 there is no need to lower the compression it wont have much boost but its a start
     
     

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    #9
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    and with the ebay manifolds u can mount them upside down and run ur down pipe over the top of the manifold easy to do and looks different thinkin of doin this to mine
     
     

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