User Review
Modern Motorsport Rear Differential Package:
Includes:
1 - Front Differential Mount & Hardware
1 - Mustache Bar & Hardware(For Both Q45 & R230)
1 - Rear Crossmember Support Brace & Hardware & Spacers
8 - Upper Mounting Spacers
4 - End Stops
2 - Axles
2 - R230 Companion Flanges
Complete Package to install
Few things to make the install go a little faster
When removing the old differential loosen all the U Joint and driveshaft bolts first before you remove them. this allows you to use the E-Brake to hold the shafts from moving when untightening the bolts for the shafts and the drive line. I didn't remove the control arms to install the Differential, and dont think its nessessary to do so, but i had a helper. Wives are good at jacking...lol
If you look at the Mustache bar it has provisions for both R200 and r230 mounting. The R200 mounts in both positions without any interferance with anything but the R230 cannot be mounted to the top mounting position without modification. I am not sure what you have to do because i used the R200 Diff. I decided to use the top mounting position to see where everything lays out.
The front mount attaches to the retension strap mounting holes right above the front crossmember. Before mounting the front differential mount you have to bend out two sheet metal tabs, they will interfear with the front mount.
I had my wife jack up the differential wile i guided it up to its correct location and then bolted it down.
Modifications to crossmembers:
By mounting the q45 R200 differential in the upper location i was able to clear the front crossmember with very little modification.
You will have to cut a tab in the crossmember to clear the front differential mount.
Rear Crossmember has to be modified to clear the larger differential cover. I took a cutoff wheel on a small grinder and cut along the arc for a nice clean look. I cleaned up the cuts with the grinder and then a metal file. Then everything got sent off to be powdercoated.
My camaro gas tank gets in the way a bit when mounting the crossmember so i did it in parts. I am sure if you had a Z tank install as one piece would not be much of a problem.
I had some problems at the end when trying to install the r230 CV. The stock swaybar end links get in the way of the CV boots. I think i have read somewhere that you can run with out the swaybar. I plan on putting it back in when i get a shorter end links.
I am using Modern Motorsports Rear disk conversion for about a year now and have not any problems with. It was a very easy install and clearance with this is not an issue
I did the companion flange conversion wile everything was out getting powdercoated. I cant wait to get on the road with this guy!!!
Overall the install was quick and strait forward. Really no supprises except for the end links interfearing. I read that even the 280zxt cv boots even interfear with the end links. Maybe someone will chime up with a solution with this last detail. Mounting the differential at the top postion allows be a strait shot to the t-56 input flange. I used a laser to see how strait the shaft is going to be and i was amazed that its about 1-2 degrees inline with the transmission. I talked to Jay at Powertrain and he feels as long as i am within 1-2 degrees vibration should be minimal. Driveshaft is going to be ordered tomarrow, not sure on the turnaround on this but should be on the road by the end of the week. Then i'll put it to the test then!
I have to give it to Ross and Modern Motorsport for a pretty complete package and taking out alot of the guess work when doing this install.
Thanks Ross and Modern Motorsport
Good Job!!!
Brian