tuning a 2.0 6 pot to 200bhp

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  1. tuning a 2.0 6 pot to 200bhp 
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    im bulding a kit car in college with a lecturer and we'v got a 2.0 6 pot engine i think its from a N reg 320what mods can i do to get 200 bhp. i know i can put a 2.8 in it but we got the 2.0 for £20 so it would make sence to stick with the 2.0 unless it costs more to tune the 2.0 compared then getting a 2.8 and do basic mods to that.
    ant ideas?
     
     

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    You wouldn't get a 2.0 to 200 bhp without either extensive head work (gas flowed, bigger valves) or forced induction.

    If you can find a 325 engine, you're almost there at the start.
     
     

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    yep, without a turbo you wont get near.

    " I have done alot of stuff i am not proud of, and the stuff i am proud of is just disgusting"
     
     

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    alright bud!
    i'm not goina to pretend i know what in talking about when building or tuning engines but i think you get about 150 bhp from a 320 engine (M50b20??). common sense dictates more are and fuel into the engine will give you more power bur another 50 bhp would be really hard from that engine with out a fair bit of cash goin into it.

    so start with the usual filter and heat shield. exhaust and remap ecu if you can. the inlet manifold would be a good place to look to. on a 328i engine folks use a 2.5 manifold as the 2.8 is restricted, if the 320 is the same you might be able to botch somthing together that might help.
    I'm sure i've seem someone use a super charger from a mini cooper s on a BMW engine too.

    If there are any real option i'm sure someone will be along soon to point you the right way...

    C

    (edit should have refreshed the page )
     
     

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    Find a Vauxhall Redtop, and put bike carbs on. Way better power to weight ratio


    No warranty of any kind implied or given and no liability for any loss, damage or injury, no matter how incurred accepted.

    Free Gas Kit* now fitted to free 328*

    *Based on ROI period exceeded
     
     

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    Quote Originally Posted by welshspiky View Post
    im bulding a kit car in college with a lecturer and we'v got a 2.0 6 pot engine i think its from a N reg 320what mods can i do to get 200 bhp. i know i can put a 2.8 in it but we got the 2.0 for £20 so it would make sence to stick with the 2.0 unless it costs more to tune the 2.0 compared then getting a 2.8 and do basic mods to that.
    ant ideas?
    You can do that fairly easy and without costing a leg and an arm. Bore the block to 84mm, it can take that and it's been done before. Then swap your internals for E46 330i internals (crank, rods and pistons). You'll need to remap the car after this, but you'll get a 3L engine, basically, which will be around that 200bhp mark you're looking for.

    You'll also need a bigger intake manifold, along with new exhaust. You can get the intake off an 325i and the exhaust off either 325i, or 328i. You should have a 200+bhp after that.

    If you keep your OEM diff, providing it doesn't break (some do, some don't, the LSD are more prone to breaking down as they are under more stress than an open diff), that thing will be rapid.
    There are only two products required to make the universe work properly: Duct tape and WD40. 


    If it moves (and it shouldn't): duct tape. 
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    Everything else is just stuff.
     
     

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    chuckb (31-05-2012)

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    Do the 330 internals actually fit in the 328 engine? I heard with the crank etc goes in no bother but never seen anyone do it? What would you be looking at powerwise?
     
     

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    They will fit, yes. No idea about the power, but it will be a 3.0L engine, so should be nippy enough. Not sure if it's really worth it for a 328, though, as it's just 200cmc difference in displacement. It's a nice upgrade for a 320/325.

    I will do this myself this summer and report back on how things went and what the gains were.
    There are only two products required to make the universe work properly: Duct tape and WD40. 


    If it moves (and it shouldn't): duct tape. 
If it doesn’t move (and it should): WD40.

    Everything else is just stuff.
     
     

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    chuckb (31-05-2012)

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    were using the dif from a siera 4x4 and my lectra says that will take the power easey? i was just curius to see if its worth it. of we do go for mote power the we will stick a 2.8 in and have a play with that tp get ut to 200bhp.
     
     

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    payno (01-06-2012)

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    2.8 has 192bhp so wont be hard to get to 200bhp, you will need to do a bit of work to get the 2.0 to 200bhp like remapping, head work etc. be alot easier to use the 2.8 and put an m50 inlet manifold off a 325 m50b25 engine then you will have over 200bhp
     
     

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