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  #1  
Old 20th July 2012, 11:12 AM
robo robo is offline
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Default Diff

Picture of the beemer diff I am using

Speedo output in the back case <kin handy>


Rear mount


108mm flanges


Easy mountings.


Bob
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  #2  
Old 20th July 2012, 10:30 PM
TheArf TheArf is offline
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That looks a big old lump

Arfon
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Old 20th July 2012, 10:48 PM
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Talonmotorsport Talonmotorsport is offline
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If that has 108mm CV joints then it's not that much bigger than a 7" sierra/granny diff. I like the simple bolt pattern on the front is the lug with the slot on the back for a securing nut or some thing else?
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Old 21st July 2012, 01:04 AM
robo robo is offline
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Afron its big but a good bit smaller than the salisbury jag/tvr unit. Its also a lot easier to mount. Its small enough to drop out through the bottom of the rear frame but the big plus is its bomb proof with plenty of choice on the ratio front.

Phil, the front lugs will require a mod on sb4 and cp10, that will let the nose of the diff into the gear tunnel and keep the driveshafts in line. Other than that its not a bad unit.

Bob
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Old 21st July 2012, 01:10 AM
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Talonmotorsport Talonmotorsport is offline
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I gathered that would be the case with the SB4's and surrounding area, is there any good material left under all that crap?
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Old 21st July 2012, 01:14 AM
robo robo is offline
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I will hack into the mule and take a piccie.

Bob
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  #7  
Old 21st July 2012, 09:29 AM
The V8 Files The V8 Files is offline
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Quote:
Originally Posted by robo View Post
I will hack into the mule and take a piccie.

Bob
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Old 3rd August 2012, 10:53 AM
PorkChop PorkChop is offline
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Robo, do you have some dimensions please (particularly the distance between the prop flange to the centre of the output flanges)? I'll compare it to my MX5 diff.

The BMW units can come in very long ratios (i.e. longer than 3:1), which may be very handy for BECs...

Last edited by PorkChop : 3rd August 2012 at 10:55 AM.
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Old 3rd August 2012, 03:13 PM
robo robo is offline
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Quote:
Originally Posted by PorkChop View Post
Robo, do you have some dimensions please (particularly the distance between the prop flange to the centre of the output flanges)? I'll compare it to my MX5 diff.

The BMW units can come in very long ratios (i.e. longer than 3:1), which may be very handy for BECs...
Its 300mm face of prop flange to driveshaft flange center line. They come in small,medium and large case the one I have is large case. You can get a 2.81 ratio in a medium case. There is lsd options on all of them.

http://www.bokchoys.com/differential/GearRatios.htm

Bob
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  #10  
Old 3rd August 2012, 10:03 PM
PorkChop PorkChop is offline
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Quote:
Originally Posted by robo View Post
Its 300mm face of prop flange to driveshaft flange center line. They come in small,medium and large case the one I have is large case. You can get a 2.81 ratio in a medium case. There is lsd options on all of them.

http://www.bokchoys.com/differential/GearRatios.htm

Bob
Yep, I know Cheers for the measurement. I wonder how much smaller the medium case is than the large case...
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