mx5 diff problems

[Talonmotorsport]

I did consider that at one point I even offered the cover up to the mill, then I had a little think about gripping a brittle ali casting in a machine vice....

[jason 82]

Just re read my gillham guide, and under the section differential, it actually has the nose braced. It says, an additional length on 19mm box can be fixed between BR12 & RS3, with a 5mm packer welded between RS3. The second engine mount rubber can be used to secure the front of the diff. I have revision 3 notes, so maybe it was not in the earlier build spec. Maybe we were all that keen, we missed it. 19mm box & 5mm plate it is ! ( picture in notes is - figure 41 : front lower diff mount position). Tidy on a Friday !

[Davidbolam]

Originally Posted by jason 82

Just re read my gillham guide, and under the section differential, it actually has the nose braced. It says, an additional length on 19mm box can be fixed between BR12 & RS3, with a 5mm packer welded between RS3. The second engine mount rubber can be used to secure the front of the diff. I have revision 3 notes, so maybe it was not in the earlier build spec. Maybe we were all that keen, we missed it. 19mm box & 5mm plate it is ! ( picture in notes is - figure 41 : front lower diff mount position). Tidy on a Friday !

That was what spud and nathan used but it failed. Partly due to the mount and they also didn't use the large plates that go under the diff mounts. Nathan then modified the mount be removing the rubber engine mount and replaced it with a steel bracket. Nothing to stop the diff twisting though

David

[Stot]

Originally Posted by Talonmotorsport

I did consider that at one point I even offered the cover up to the mill, then I had a little think about gripping a brittle ali casting in a machine vice....

You could do it with a steel jig but you would need to do it in 2 or more operations.



Clamp the jig to the table and then bolt the diff casing to the jig from above. I think the hole spacing is equal so if you do 2 opposite sides then turn it 90 degrees you could do the other 2 sides. Probably need to cut the wings off first too.

At a push I could probably do this on my little Sieg SX3 in 8 steps with the head at 90 degrees.

Cheers
Stot