1995 E36 320i M52B20 perfomance increase

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  1. 1995 E36 320i M52B20 perfomance increase 
    #1
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    scottouring's Car Details
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    Hi everyone, relatively new to BMW ownership (4 days!)

    Have bought a well cared for Madeira violet 320i touring and despite a few minor issues is proving to be a nice ride.

    I chose the 2.0 litre as I'll shortly be moving abroad to Norway where car importation tax is unbelievably high and based on cylinder capacity and BHP output. The more of each, the more it costs. To give an idea, I bought the car here for 800 pounds and I will need to pay around 2000 pounds to import. Still, beats paying the 6000 pound price tag for the equivalent car on the local market.

    So I've settled on a 2.0 litre as its a nice smooth 6 cyl with a reasonable power output. Question is, how do I get more!?

    I work as a foreman in a motorbike workshop, so am up to speed with the principles of tuning/filters/cams/intake/exhaust/ECU mapping. What I'd like to know is has anyone here actually had any genuine positive results with upping the power of the 2.0 litre engine. There are so many false claims made by so called tuning specialists, so I figure this is the place to get a straight story. I am hoping to acheive around 170bhp.

    Any companies/products that are recommended?

    Also need to change oil, filter, plugs. What plugs are best for this engine and what oil is recommended. Looking at the service history, I can see fully synthetic on the invoice, although no indication of oil viscosity/weight.

    Will be changing a leaky thermostat housing this weekend, any special coolant recommended?

    Thanks in advance for help. Oh, and anyone got any 17" alloys they want to sell? Can't stand looking at the standard 16" crappies it came with.

    Cheers dudes.
     
     

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    #2
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    alpina527's Car Details
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    You won't get much out of the 2 litre M52 engine I'm afraid. Your best route to more power is to replace the block/crank/pistons with the 84mm version from the 328.

    It will look the same from the outside which might help your cause.
     
     

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    #3
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    hamish262001's Car Details
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    Quote Originally Posted by alpina527 View Post
    You won't get much out of the 2 litre M52 engine I'm afraid. Your best route to more power is to replace the block/crank/pistons with the 84mm version from the 328.

    It will look the same from the outside which might help your cause.
    I like that idea
     
     

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    #4
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    scottouring's Car Details
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    Ah I see. Well that sounds like one hell of a job to me. What about intake manifolds/throttle body upgrades like on the 323 and 328, anything along this line? The intake must be restricted in some way that can be undone I would have thought. What kind of gains should I expect from dumping the cat and fitting a full decat system?

    Any advice about spark plugs and recommended oil?

    Thanks guys
     
     

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    #5
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    There is no point in doing the throttle body/manifold upgrade on the 2 litre M52 because the head on the 2 litre uses much smaller ports that match the existing manifold perfectly.

    The 323/328 uses the same manifold but have much bigger ports.
     
     

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    abdul kariim's Car Details
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    i have heard that if you put a 325i...or 328i......manifold air / throttle sw/valve on a 320i you achieve lots more oooomph......for minimal effort and outlay.........is this fact or a jackanory....?.....has anyone actually done this mod n what was the rate of change....?
    thanks so much.................................new to forum.................abdul kariim in cambridge
     
     

  9. BMW M52B20 tuning 
    #7
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    Misho's Car Details
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    i'm also thinking about upgrading my M52B20 by fitting M52B28 cylinder head and run the engine on the M52B28 DME
    any comments?
     
     

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    You would be better off fitting the complete 328i engine as you will have alot torque and a lot more tuning options

    Take a Look at my shop in venders section for more details on 328i e36s

    what mods can be done power out puts tested on a Dyno dynamics rolling road



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    Last edited by bwchiptune; 16-06-2013 at 23:50.

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    well in my case, i was thinking about the following, my M52B28 is installed in an E30, the E30 already is lightweight and does not need the 280 Nm of torque the 2.8 litres power plant generates, in fact it needs more power
    my theory is this, i can use a lower volume engine that generates decent power and revs a lot quicker than a big engine, it will generate more power to weight ratio and the car will be even faster,
    how about this combo:
    M52B28 engine with M52B20 crank and rods (keep the M52B28 pistons) + the 2.8 cylinder head + the 2.8 engine management + M54B30 intake camshaft (240 degrees vs the stock 222 degrees) + 68mm big bore throttle body
     
     

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    Theres the option of regrinding your cams and utilising the short stroke 2liter to safely increase RPM,

    Check out the P54B20 Engine.

    Im hoping to go into the business of Intake manifolds in the near future. How much would you be willing to spend on one? (survey purposes)
     
     

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