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    "Budget" Diff Upgrade?

    Is there such a thing as an affordable, yet impactful diff upgrade? Would love to drop the $4-5k on an OS Giken/ Quaife/ Drexler, but it's not in the budget (need to replace coilovers). Is there a clutch kit that will improve the M Variable on track or is it a case of buy once, buy right spend the money on the $5k diff?

    #2
    Did you consider Wavetrac? The limited slip unit itself is under 2k.

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      #3
      Originally posted by TACOM3EAT View Post
      Is there such a thing as an affordable, yet impactful diff upgrade? Would love to drop the $4-5k on an OS Giken/ Quaife/ Drexler, but it's not in the budget (need to replace coilovers). Is there a clutch kit that will improve the M Variable on track or is it a case of buy once, buy right spend the money on the $5k diff?
      I will be doing this:

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        #4
        Originally posted by TACOM3EAT View Post
        Is there such a thing as an affordable, yet impactful diff upgrade? Would love to drop the $4-5k on an OS Giken/ Quaife/ Drexler, but it's not in the budget (need to replace coilovers). Is there a clutch kit that will improve the M Variable on track or is it a case of buy once, buy right spend the money on the $5k diff?
        If you can track down a 210mm (large) clutch style differential from an E34 or E39 M5, 750IL, etc. and upgrade the old clutches, either replacing the worn clutches with a service kit like this (https://racingdiffs.com/products/bmw...33470781292679) or upgrading to extra clutches with something like this (https://racingdiffs.com/products/bmw...33470781325447) you'll be in business. We did all new bearings as well.

        We did this ( https://racingdiffs.com/products/bmw...33470781358215) track package set up with a friend's M3 and it was light years ahead of the stock M3 differential. Messy job and you'll still need someone to install and set up the differential in the housing.

        Feff
        MVP Track Time

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          #5
          Didn’t you post of Facebook?

          If you look on eBay there’s a guy in Spain that’s selling a rebuild ZF unit for less than $1k. My buddy bought one. Took forever to get delivered (customs) but it made it. The tough part has been sourcing the axle stubs. Ended up cutting down 2 long E46 M3 stubs.

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            #6
            Originally posted by bigjae46 View Post
            Didn't you post of Facebook?

            If you look on eBay there's a guy in Spain that's selling a rebuild ZF unit for less than $1k. My buddy bought one. Took forever to get delivered (customs) but it made it. The tough part has been sourcing the axle stubs. Ended up cutting down 2 long E46 M3 stubs.
            I did indeed! Ahh, good to know thanks for that


            Sent from my iPhone using Tapatalk

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