1996 E36 328ti, Diffs Gone After Engine Conversion Need Help :)

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  1. 1996 E36 328ti, Diffs Gone After Engine Conversion Need Help :) 
    #1
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    SP4RK1's Car Details
    Model of Car:
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    1996
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    Did an engine conversion on a 316i compact , put the 2.8L engine out of a 328i in it we knew the diff would go eventually but i dont want to put another 1.6 diff into it as it will just chew it up as its done with this 1 is there a stronger differential maybe of a diesil model that would fit it and work better? i dont realli wanna go out and buy a new diff and end up finding i have the same problem a couple of weeks down the line i would be very grateful if someone could help me or if someone that has done the conversion 4 them self could speak to me to help me overcome other difficulties that ive been having
    Many thanks
    Shane
     
     

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    #2
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    Alex328Sport's Car Details
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    I have a spare 328 diff if you want it! Pretty sure that the 316 will have a small case diff, and the 328 uses a medium case diff.
     
     

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    SP4RK1 (16-04-2011)

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    #3
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    RJB328i's Car Details
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    if i am right you will need a complete rear end of a 328 mate as the diff will not bolt in to your sub frame, but you should be able to get a rear end for around a ton
     
     

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    SP4RK1 (16-04-2011)

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    #4
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    payno's Car Details
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    look for a 28 diff with the half shafts cradle brakes ect there's one on ebay in bradford only on £50 at the moment
     
     

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    socleanitsdirty (31-12-2014),SP4RK1 (16-04-2011)

  10.  
    #5
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    IIRC, you'll have to replace the driveshafts (output shafts) and propshaft as well, in order to be able to fit a medium case (188mm) diff (as fitted to 6cyl BM's).

    Using a diff from a diesel won't be such a good idea, IMO, because of the ratio's. You'll get very long gears and that will kill your acceleration. Very high top end speed, but you're not going to race in NASCAR, are you?

    A 4cyl diff will be OK as a temporary solution, as long as you don't trash the car around - it will hold up nice. Meanwhile, you can put the bits together to complete the kit, meaning driveshafts, prop and medium case diff. Regarding the prop, I think is just the back half of it that you need (the one the goes from diff to half joint), but do wait for more knowledgeable users to have their opinion on this.
    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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    SP4RK1 (16-04-2011)

  12.  
    #6
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    SP4RK1's Car Details
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    i would to love to take the diff of ur hands but theres no way i can get to london as im near leicester with no car :(
     
     

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    #7
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    rumpleforeskin's Car Details
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    dont azlot of people upgrade there 328 diffs for 3.0 m3 diffs, look into that as they use the medium case as well
    THE DUDE ABIDES
     
     

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    SP4RK1 (17-04-2011)

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    #8
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    disco!!!!'s Car Details
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    Quote Originally Posted by rumpleforeskin View Post
    don't alot of people upgrade there 328 diffs for 3.0 m3 diffs, look into that as they use the medium case as well
    I did this
    seeing as you are running a compact have you though about trying to source a E30 325 diff instead?
    loud-low-slow-project


    no sugar turkish, im sweet enough
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    SP4RK1 (17-04-2011)

  17.  
    #9
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    SP4RK1's Car Details
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    thanks disco im thinking about changing the whole back end anyway would it all fit on a compact if not which one will fit the compact?
     
     

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    #10
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    Wot about a z3 2.8 diff as its a compact underneath
     
     

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    SP4RK1 (17-04-2011)

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