1985 e30 325i - turbo conversion

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  1. 1985 e30 325i - turbo conversion 
    #1
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    vickers609's Car Details
    Model of Car:
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    Year of Manufacture:
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    Hi i have a bmw e30 325i convertible. I am after something diffrent so want to strap a turbo to her. I have some info on what i will need turbo side and ecu side but im not sure on engine internals ie. Pistons, h-beams, crank, valves etc. could anybody throw some light on to the situation please. thanks, ben
    Last edited by mark@vorny.co.uk; 01-09-2010 at 21:29.
     
     

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    t5r300's Car Details
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    As the engine was not made to handle a turbo , i would start by pulling the motor down and replacing rods, bolts,bearings get high comp pistons get the crank ndt inspected then micro polished . Its not as simple as just bolting one one there are alot of variables you need to consider. you might want to look in to an engine conversion as sometimes this can be a cheaper alternative? my advice is do your home work first make sure you have prices and contacts for every part and dont rush it. i build engines for a living and the smallest mistake is often the most expensive.
     
     

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    markrnorton's Car Details
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    Quote Originally Posted by t5r300 View Post
    As the engine was not made to handle a turbo , i would start by pulling the motor down and replacing rods, bolts,bearings get high comp pistons get the crank ndt inspected then micro polished . Its not as simple as just bolting one one there are alot of variables you need to consider. you might want to look in to an engine conversion as sometimes this can be a cheaper alternative? my advice is do your home work first make sure you have prices and contacts for every part and dont rush it. i build engines for a living and the smallest mistake is often the most expensive.
    Like putting high compression pistons in a turbo conversion !
    Z3
     
     

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    vickers609's Car Details
    Model of Car:
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    1985
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    i will be putting new big and small end bearings forged pistons low comp and con-rods. it was mainly the crank end as ive heard i might need to get an e36 m3 crank put in. I will be doing it over 2 years or so due to cost and the power output i am after. Also the head will be striped ported and polished new valves and guids maybe a shrick cam. Vems ecu system 5 paddle clutch lightend flywheel if necesery. What would you recomend? cheers
     
     

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    gstuning's Car Details
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    What power level do you want?

    You can go 450hp safely longterm on stock internals with a stock headgasket + ARP studs. If you have the 8.8 compression engine.

    Go with the VEMS ecu it will be brilliant for you. I´ve tuned alot of them on M20 turbo´s.

    Depending on your powerlevel I´ll suggest differently. So need to know that before I can suggest more things.
    With great challenges comes great engineering.
    Gunnar Reynisson @ Cosworth
     
     

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    #6
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    vickers609's Car Details
    Model of Car:
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    the turbo i have perchased will be capable of between 400hp and 500hp and do you no the price for the vems kit that would best suit my needs cheers
     
     

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