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Thread: Pre-Purchase: 32A Helical LSD

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Posts: 171-180 of 202
2015-03-05 17:55:06
#171
Ok guys i guess i´m the first one installing this on a 70A, already found a small problem, easy to solve, the original 70a crown wheel bolts are m10´s, the M´factory uses m12, so you´ll need to enlarge the crown wheel holes by 2mm and need 8 new m12 bolts for the LSD. Take note the crown wheel needs to be machined on a machine shop, and bolts need to be high grade.

Other then that seems do be a straight fit.

I´ll will update as i go...
2015-03-05 18:02:36
#172
Ok, this I was not made aware of during the testing. Let me double check the specs again with the tester and the engineer.
2015-03-05 18:04:04
#173
I assume this work is needed because it was designed for the 32A transmission, and you're trying to make it work for a 70A transmission (for which it was not specifically designed)?
2015-03-05 18:06:03
#174
My "test" unit didn't fit at all, I had to take my NISMO LSD diff out, find a spare open diff transmission, send it to my fab shop along with my MFactory one and a trans case and they are STILL trying to make it fit. Without over milling / causing the unit to not work at all.

Very frustrating, I've sent emails to MFactory with no reply so either I have the wrong email address (maybe person isn't there any more), its reaching a SPAM system or their email system isn't allowing it to be delivered.
Last edited by cavern on 2015-03-05 at 18-07-04.
2015-03-05 18:06:36
#175
Bolts are the same between the 32a and 70a
I've swapped several Quaifes from 32 boxes into 70's now.
Last edited by TheSam on 2015-03-05 at 18-08-37.
2015-03-05 18:09:38
#176
Originally Posted by cavern
My "test" unit didn't fit at all, I had to take my NISMO LSD diff out, find a spare open diff transmission, send it to my fab shop along with my MFactory one and a trans case and they are STILL trying to make it fit. Without over milling / causing the unit to not work at all.

Very frustrating, I've sent emails to MFactory with no reply so either I have the wrong email address (maybe person isn't there any more), its reaching a SPAM system or their email system isn't allowing it to be delivered.


You have PM
2015-03-05 18:52:21
#177
Originally Posted by TheSam
Bolts are the same between the 32a and 70a
I've swapped several Quaifes from 32 boxes into 70's now.


So i assume everybody will have this problem?
2015-03-05 18:58:18
#178
If it turns out to be an issue for everyone, we will fix it (be it new bolts, or bolt collars, or a re-threaded bottom case)
2015-03-06 02:07:52
#179
I don't have an actual bolt to test atm but it appears to be m12 on mine.
2015-03-06 12:21:19
#180
I dont even have time to open my trans until sometime this summer, so I'll keep an eye on this thread in the mean time.
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