locoboy
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| posted on 10/3/05 at 09:31 PM |
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diff back plate
Chaps,
i know the 7.5 diff is 7.5 inches across the mounting bolt area and 7 inch is 7 inches, i also know that the 7 and 7.5 inches relates to the crown
wheel size too,
but do they share the same sized back plate?
ATB
Locoboy
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Stu16v
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| posted on 10/3/05 at 09:58 PM |
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No mate here, thrid pic down (I think)...
Cheers, Stu.
Dont just build it.....make it!
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locoboy
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| posted on 11/3/05 at 10:14 AM |
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balls!
Looks like i will have a spanking new 7 inch back plate taking up space in my shed then 
ATB
Locoboy
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Stu16v
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| posted on 11/3/05 at 07:22 PM |
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This *might* be a bit of luck (for me, anyway...) How much do you want for it mate?
Dont just build it.....make it!
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locoboy
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| posted on 13/3/05 at 05:23 PM |
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Stu,
On second thoughts i may need it.
I want to get a 3.38 diff and use my 3.62 LSD to cobble together a 3.38 LSD set up.
Now is it best to put the LSD bits into the 7 inch 3.38 diff housing
or
put the 3.38 bits into the 7.5 inch 3.62 LSD housing?
ATB
Locoboy
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JoelP
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| posted on 13/3/05 at 05:46 PM |
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the usual approach seems to be to put the LSD into the new ratio, to avoid having to re shim the cogs. But you would obviously need to make sure that
the 7" and 7.5" lsd internals are compatible.
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NS Dev
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| posted on 14/3/05 at 08:42 AM |
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I don't know about the cross-compatibility on this one, but the 7" diff ratio os 3.62:1 and the cosworth 7.5" is actually 3.64:1,
pedantic but I don't know what this might infer about differences between internals, apart from obvious incompatibility of the crownwheel and
pinions between the two.
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locoboy
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| posted on 14/3/05 at 09:32 AM |
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Bollocks is there anyone i can contact directly that can give me a definative answer?
I need to know what im going to do - im having a rerar end quandry (oooooerrrrrr)
Got Drum uprights and drum brakes and shafts, Lobro 7.5 inch cosworth LSD with a cracked back plate and a brand new 7 inch backplate
Can anyone come up with a plan out of all that!
i would ideally like disk brakes though ;-)
ATB
Locoboy
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NS Dev
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| posted on 14/3/05 at 01:03 PM |
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sell what you have and buy an XR4x4 backend complete, £50 max!
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Stu16v
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| posted on 14/3/05 at 07:19 PM |
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The 3.38 bits will not fit in the 7.5 housing - or rather, they *might* fit, but the gears will not be meshing...
It might be possible that the 'LSD bit' of the 7.5 inch will fit into a 7 inch case (I doubt there is any extra width, as Sierra
driveshafts are the same length IIRC).
It just happens that I have a 7" LSD which I have taken out of my car, as it was rather noisy. It might just be the CWP worn - any use?
Cheers, Stu.
Dont just build it.....make it!
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JoelP
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| posted on 14/3/05 at 07:26 PM |
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quote:
Originally posted by NS Dev
sell what you have and buy an XR4x4 backend complete, £50 max!
you find them, i'll buy 'em!
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locoboy
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| posted on 15/3/05 at 09:09 AM |
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Stu,
Think i need to have a chat to you about this over a beer in the near future
You have U2U 
ATB
Locoboy
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