HELP, want longer gears...wht to do
#1
Newbie
Thread Starter
iTrader: (3)
Join Date: Apr 2006
Location: negril
Posts: 36
Likes: 0
Received 0 Likes
on
0 Posts
HELP, want longer gears...wht to do
Hi, i have an rs gearbox, my top speed on 5th is 120!!! Now i do a lot of highway so i need longer gears for cruising at lower rpm. Do i have to change the whole gearbox, or could i change tge final drive in the diff? Whats the difference among these two options? Help me understand ,thanks.
#5
Newbie
Thread Starter
iTrader: (3)
Join Date: Apr 2006
Location: negril
Posts: 36
Likes: 0
Received 0 Likes
on
0 Posts
Ok, so how do i know what size final gear i have? If this can help i have an rs gearbox, and top speed in 5th gear at 7000rpm is close to 120mph. From my research i belive i do have the 4.85 final drive...can someone confirm?
#7
Evolving Member
iTrader: (1)
the way you get your FD ratio if you wanted to do the math is, Driven gear divided by drive gear, what this means is you would need to count the amount of teeth on the driven gear in which case would be the ring gear On the diff inside the transmission, divided by the number of teeth on the drive gear (pinion shaft that is located under first gear). This would give you your final drive ratio, in fact, every gear ratio is calculated this way.
if you upgrade your final drive to a taller ratio, your car will loose lots of responsiveness on the streets and part throttle, often times requiring a retune to make a bit more power to make up for the unresponsiveness of the car with the taller gearset.
Thread
Thread Starter
Forum
Replies
Last Post
Loco_Lancer
Lancer Tires, Wheels, Brakes & Suspension - Sponsored by The Tire Rack
4
Mar 21, 2006 08:47 PM
EVO_EDGE
Evo Engine / Turbo / Drivetrain
10
Oct 26, 2005 10:44 AM
wrxakaboosti
West Region
16
Mar 7, 2005 11:15 PM