SL/R129: Rear differential options/gear ratios
01-09-2016, 05:42 PM
#1
Junior Member
Thread Starter
Join Date: Mar 2005
Location: etowah
Posts: 36
Likes: 0
Received 2 Likes
on
2 Posts
88' twin turbo R supra
Rear differential options/gear ratios
We are building a SL600 race car, we need a lower (higher numerically) gear ratio rear diff. Does anyone know if the SL320/500 diffs will swap into a 600? If they are the same size ring & pinion/same strength? Or do I need to get one out of another merc?
01-10-2016, 08:49 PM
#2
Member
Join Date: Jul 2013
Location: Saint Augustine, FL
Posts: 126
Likes: 0
Received 4 Likes
on
4 Posts
1998 SL500
The early 6-bangers (129.061, '90 to '93) had 3.46 and 3.69:1 final drives with the same 210 mm ring gear the later '500s as shown below:
The highlighted one supplied with the 5-speed might be the best choice as it also has the 32 mm axle shafts as used with the '93 and up '500s and '600s (129.067 and 129.076):
They must have thought the manual tranny needed the beefier axles. How much is involved in fitting one to a '500 is something you'll have to sort out...
The highlighted one supplied with the 5-speed might be the best choice as it also has the 32 mm axle shafts as used with the '93 and up '500s and '600s (129.067 and 129.076):
They must have thought the manual tranny needed the beefier axles. How much is involved in fitting one to a '500 is something you'll have to sort out...
Last edited by cliffyk; 01-10-2016 at 08:52 PM.
07-30-2021, 08:18 PM
#3
Senior Member
Join Date: Aug 2014
Location: SoCal - OC
Posts: 266
Received 35 Likes
on
25 Posts
2004 CL55, 2003 SL55 and 2009 G55
The early 6-bangers (129.061, '90 to '93) had 3.46 and 3.69:1 final drives with the same 210 mm ring gear the later '500s as shown below:
The highlighted one supplied with the 5-speed might be the best choice as it also has the 32 mm axle shafts as used with the '93 and up '500s and '600s (129.067 and 129.076):
They must have thought the manual tranny needed the beefier axles. How much is involved in fitting one to a '500 is something you'll have to sort out...
The highlighted one supplied with the 5-speed might be the best choice as it also has the 32 mm axle shafts as used with the '93 and up '500s and '600s (129.067 and 129.076):
They must have thought the manual tranny needed the beefier axles. How much is involved in fitting one to a '500 is something you'll have to sort out...
live to spend time putting this together for other models/years and put in tech section.
Thank you
Mick
