Jump to content



Axle/diff question....


  • Please log in to reply
7 replies to this topic

#1 Starionslider

Starionslider

    Member

  • Members
  • PipPipPip
  • 299 posts
  • Gender:Male
  • Location:Ct
  • Model:Other

Posted 31 October 2017 - 03:57 PM

Know a guy with a open diff in a 87, wants me to swap in a lsd he bought. Are the axles gonna fit or are they a totally different axle? I feel like ive read about people swapping in lsd's with same axles on 87's but ive been looking all over and cant seem to find the info.





#2 Turbo Cary

Turbo Cary

    Established Member

  • Members
  • PipPipPip
  • 1,566 posts
  • Gender:Male
  • Location:Charleston, South Carolina
  • Model:Conquest

Posted 31 October 2017 - 08:15 PM

I know there are differences in 4 bolt axles. I had tried to get some for my 86 but the ones they sent looked right but were wrong. The bolt spacing on the hub side was off. I ended up rebuilding my own.

Not sure if that helps but it did feel like the axle side went in smooth.

#3 markhansenconquest

markhansenconquest

    Established Member

  • Members
  • PipPipPip
  • 3,298 posts
  • Gender:Male
  • Location:temecula,ca
  • Model:Conquest

Posted 31 October 2017 - 09:21 PM

Is your car a wide/body 87 or flatty 87 intercooled ??does it have a LSD diff ? Intercooled axles are diffrent on the hub side ,, that's why a non intercooled will not fit ,,,unless u grind the 4 holes oval to make it fit...............The ones on rock auto are for non intercooled cars...........

Edited by markhansenconquest, 31 October 2017 - 09:23 PM.


#4 87redcat

87redcat

    10 years and counting...

  • Members
  • PipPipPip
  • 3,768 posts
  • Gender:Male
  • Location:Maryville, TN
  • Interests:Aircraft Mechanic, having the wife tell you its about time you finished MY car...
  • Model:Conquest

Posted 01 November 2017 - 05:49 AM

3 types of axles.  Flatbody 4 bolt. Fatbody 4 bolt. Fatbody 6 bolt.
Non are interchangeable
Most parts stores have the the flatbody 4 bolts.  The other 2 have not been sold new in years.
I got blisters on my fingers!!!

#5 Starionslider

Starionslider

    Member

  • Members
  • PipPipPip
  • 299 posts
  • Gender:Male
  • Location:Ct
  • Model:Other

Posted 01 November 2017 - 06:56 AM

View Post87redcat, on 01 November 2017 - 05:49 AM, said:

3 types of axles.  Flatbody 4 bolt. Fatbody 4 bolt. Fatbody 6 bolt.
Non are interchangeable
Most parts stores have the the flatbody 4 bolts.  The other 2 have not been sold new in years.

So the inner joints are different? I understand the outer 4bolt vs 6bolt on the hub side.

#6 StarquestRescue

StarquestRescue

    Established Member

  • Members
  • PipPipPip
  • 4,628 posts
  • Gender:Male
  • Location:Lancaster PA
  • Interests:Mits owner from 1980
  • Model:Conquest

Posted 01 November 2017 - 08:49 AM

The non intercooled 4 bolt axels are slightly longer but the splines are the same. Many have used them with the 4 bolt intercooled lsd with no reported problems.
2012 fall set up 20g 06  in the stock turbine houseing. 2g mas, Neo afc, Versafueler, 1050 / 2000 injectors on E85.  379hp 395 tq TBI Power

2012 spring set up. 18g06 in the stock turbine houseing.  2g mas, Neo afc, Versafueler, 1050 / 2000 injectors on E85.  Innovated data logging. 358 hp 393 tq. 12.71 @ 112
2011 set up. 18g05h,  2g mas, Neo afc, Versafueler, 1050 / 2000 injectors on E85.  Innovated data logging. 307 hp 360 tq  12.78 @ 112
2010 set up. 18g05h,  2G mas, Lsp 850 / 1400 injectors. Tuned with re flashed afc Neo version 1.104 and Innovated data logging.  297 hp 403 tq.


401 / 427 TBI   Dyno link-----------TBI Power http://www.sqperform....php?topic=33.0-----------Rear Gear link----------2010 Dyno link-------Feedback link

#7 Starionslider

Starionslider

    Member

  • Members
  • PipPipPip
  • 299 posts
  • Gender:Male
  • Location:Ct
  • Model:Other

Posted 01 November 2017 - 07:00 PM

Ok thanks. If they are the same i will have another spare diff for my beast too....will just need some welding hahaha

#8 JDM

JDM

    Member

  • Members
  • PipPipPip
  • 94 posts
  • Gender:Male
  • Location:Sydney, Australia
  • Interests:Restoring Aussie and JDM Starions GSR-V & GSR-VR
  • Model:Starion

Posted 02 November 2017 - 06:29 AM

There's more to this equation. It also depends on whether the car is 4 lug or 5 lug.
Regarding 4 bolt axle shafts, the spline count on the '87 diff side should match. However,
if the open diff car is 4 lug, then the shaft wont match with the 5 lug LSD shafts on the hub side.
Just change the matching hub flange on the hub axle to make it bolt up (providing you have access to both sets).

Edited by JDM, 02 November 2017 - 06:30 AM.





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users