Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

front to rear..different gear ratio??


  • Please log in to reply
7 replies to this topic

#1 mr pink

mr pink

    New User

  • Members
  • Pip
  • 8 posts
  • anchorage, ak

Posted 03 February 2006 - 10:51 AM

what does it feel like if things are not matched properly? and how do you tell by looking at part no.s or whatever on the outside of the unit? 87 auto 4x4..when i bought it the step father or something of the guy i bought it from made some comment about it just having the transmission switched not too long ago.. couldn't really drive it in 4x4..snowy/icy roads, but it just felt bad..really bad...like it was just going to spin wildly out of control at any instant..and it did a few times...

#2 Dr. RX

Dr. RX

    Elite Master of the Subaru

  • Members
  • 9,984 posts
  • Sammamish, WA

Posted 03 February 2006 - 02:16 PM

If the two diff are different ratios, the transmission and rear diff will bind up. With an automatic, the effect may not be a dramatic as a standard tranny. On slippery surfaces, one set of wheels will spin fasten then the other, on dry pavement, the difference will cause a binding that could eventually cause major damage to one or both.

#3 Turbone

Turbone

    The Original Rob

  • Moderator
  • 12,135 posts
  • WA

Posted 03 February 2006 - 02:36 PM

Look at the rear diff, theres a silver tag on it. Might be under a bunch of grease. It should say its a 3.7, at least thats what you should be running with the auto tranny.
If the ratios are the same, I would say you have some tires that are not of the same size.

#4 mr pink

mr pink

    New User

  • Members
  • Pip
  • 8 posts
  • anchorage, ak

Posted 03 February 2006 - 04:08 PM

yeah the tires match...roads can certainly be called slippery..and transmission/front diff has..i think failed

#5 Crown Loyale

Crown Loyale

    USMB Regular

  • Members
  • PipPipPip
  • 61 posts
  • Hampton, VA

Posted 03 February 2006 - 08:05 PM

I thought if it was turbo it had 3.7, and n/a it was 3.9?

Look at the rear diff, theres a sivlver tag on it. Might be under a bunch of grease. It should say its a 3.7, at least thats what you should be running with the auto tranny.
If the ratios are the same, I would say you have some tires that are not of the same size.



#6 Subarian

Subarian

    1000+ Super USER!

  • Members
  • 1,150 posts
  • Orem

Posted 03 February 2006 - 08:10 PM

But if it's the tranny that was switched out, he needs to know how to ID the gear ratio in the tranny. I think it's done by the spline count on the axle shafts, but I'm not sure which is which.

#7 Turbone

Turbone

    The Original Rob

  • Moderator
  • 12,135 posts
  • WA

Posted 03 February 2006 - 08:15 PM

He needs to know if its a turbo tranny. The spline count is different, but the gear ratio is the same. The GL 4WD 5spd and DL 4WD 5spd are 3.9.
The turbo is 3.7

#8 Crown Loyale

Crown Loyale

    USMB Regular

  • Members
  • PipPipPip
  • 61 posts
  • Hampton, VA

Posted 03 February 2006 - 08:31 PM

I'm very sorry for the "not so smart, Dumb, answer". I thought I'd add my $.02 but I added a wooden Nickel I shat the other day LOL. I guess I'll read into things a little more. Sorry!

He needs to know if its a turbo tranny. The spline count is different, but the gear ratio is the same. The GL 4WD 5spd and DL 4WD 5spd are 3.9.
The turbo is 3.7






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users