Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-11-2009, 12:23 AM   #1 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Helena Mt
Posts: 37

01 Insight - '01 Honda Insight DX
Team Honda
90 day: 67.82 mpg (US)
Thanks: 2
Thanked 1 Time in 1 Post
Subaru Justy Gear Swap?

Hello all I am looking for information on gear swaps for a 90 Subaru Justy.

What I have found so far is that the 87-88 transmission will bolt in and give me a bit better gearing but it still not all that great.

I also found this site on using a second gear in the place of a fifth to bring the ratios even lower. Modifying Gears for Taller Overdrive

though I don't have a friend with a shop anymore so I'm not sure that's an option at this point.


Any one know of options for Gear Swaps for Subaru Justy's?


Last edited by mtgeekman; 07-11-2009 at 01:18 AM..
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 07-11-2009, 03:06 AM   #2 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Helena Mt
Posts: 37

01 Insight - '01 Honda Insight DX
Team Honda
90 day: 67.82 mpg (US)
Thanks: 2
Thanked 1 Time in 1 Post
some information on the justy is on this Wikipedia page:

Subaru Justy - Wikipedia, the free encyclopedia

using those numbers with the stock tire size puts 60mph at about 3600 rpm with the second gen transmission and 3400 with the first gen transmission

( Subaru Justy Forum - Manual Gearbox Teardown/Interchange )
the place that pointed me to the site on using the second gear as a replacement 5th noted a drop from .675 to .590 which would get me to about 3150rpm at 60mph.

I would love to get that number down by another 500rpm at least. My plan is to go all out with mods. Including a boat tail, wheel skirts, undertray....
  Reply With Quote
Old 07-11-2009, 11:34 PM   #3 (permalink)
Dartmouth 2010
 
SVOboy's Avatar
 
Join Date: Nov 2007
Location: Hanover, NH
Posts: 6,447

Vegan Powa! - '91 Honda CRX DX
Team Honda
90 day: 66.52 mpg (US)
Thanks: 92
Thanked 119 Times in 87 Posts
Send a message via AIM to SVOboy Send a message via MSN to SVOboy Send a message via Yahoo to SVOboy
Yeah, those kei cars have some crazy gearing, so hopefully you can knock it down a bit. Looking forward to seeing what you can come up with
  Reply With Quote
Old 08-19-2009, 10:21 PM   #4 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,275

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.07 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)
Thanks: 3,811
Thanked 6,693 Times in 3,469 Posts
We haven't seen many Justy owners around.

(They're not actually Kei cars, Ben - about the size of a Metro.)

Are there no dedicated Justy forums where you can get the specifics on regearing your final drive or 5th? That'd be my first plan.
__________________
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: Oops, I did it again! Bought another cheap, 3-cylinder Mirage. Mods in progress...
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 08-20-2009, 12:33 AM   #5 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Helena Mt
Posts: 37

01 Insight - '01 Honda Insight DX
Team Honda
90 day: 67.82 mpg (US)
Thanks: 2
Thanked 1 Time in 1 Post
I have found one Justy forum that had some info on the gearing and even doing a swap. Though the only guy I know of that was actually going to try and do it ended up just swapping the tranny from the 87/88 into the newer car to lower the 4th and 5th gear. as for the final drive, I haven't seen any info on doing a swap for it.


I found that I can fit 165/65r14 tires on the car and I am hoping to get a set of potenza re92s for it unless there is a better lrr tire now?


Good news is I have the car running now, needed an exhaust valve and then it had a clogged injector. Still need to replace the distributor on it to fix a CEL code but its getting there.

  Reply With Quote
Reply  Post New Thread


Tags
justy, subaru

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Story of a custom 5th gear for a '98 Ford Escort ZX2: +6% MPG MetroMPG EcoModding Central 14 03-05-2020 07:20 AM
Saturn S-Series 5th Gear Swap cfg83 EcoModding Central 61 05-02-2012 10:31 PM
Geo Metro XFi cam swap How To Johnny Mullet DIY / How-to 13 01-31-2012 10:05 AM
Met an unhappy Aveo owner today MetroMPG General Efficiency Discussion 24 10-10-2010 08:03 AM
Is there a better use for first gear? Oval_Overload EcoModding Central 24 07-06-2009 10:52 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com