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
- - - - -

DR 5 speed gear ratios?


  • Please log in to reply
3 replies to this topic

#1 heep70

heep70

    Subaru Fanatic!

  • Members
  • 496 posts
  • Bonney Lake

Posted 28 July 2005 - 08:46 PM

What are the gear ratios in my 1986 GL Dual Range 5 speed manual transmission?

I am trying to figure out how fast I am really traveling MPH with the 26" tires.

I can use this formula if the 5th gear was a 1:1 ratio.

RPM = (MPH X Gear Ratio X 336) / Tire Diameter

OR

MPH = (RPM X Tire Diameter) / (Gear Ratio X 336)

#2 VaporTrail

VaporTrail

    Brattitude Adjustment

  • Administrator
  • 11,160 posts
  • Central Iowa

Posted 28 July 2005 - 10:02 PM

What are the gear ratios in my 1986 GL Dual Range 5 speed manual transmission?

I am trying to figure out how fast I am really traveling MPH with the 26" tires.

I can use this formula if the 5th gear was a 1:1 ratio.

RPM = (MPH X Gear Ratio X 336) / Tire Diameter

OR

MPH = (RPM X Tire Diameter) / (Gear Ratio X 336)


you can plug in your tire sizes here for a multiplier....

http://www.miata.net...irecalcold.html

#3 VaporTrail

VaporTrail

    Brattitude Adjustment

  • Administrator
  • 11,160 posts
  • Central Iowa

Posted 28 July 2005 - 10:04 PM

or here are the ratios....

http://www.ultimates...gear-ratios.htm

#4 heep70

heep70

    Subaru Fanatic!

  • Members
  • 496 posts
  • Bonney Lake

Posted 28 July 2005 - 10:11 PM

Thanks!




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users