black-devil

Hey guys, i read a lot of posts but i confused. i want to install feed 4.77 and some posts say that the speed sensors need to calibrate and some others that the speed meter shows correct without any modification. Can anyone who install 4.77 answer for sure what happen. Or someone can tell me where speed sensors are located? Thanks and sorry for my poor English

chetrickerman

i know that in most cars, the speedo is in the trasmission. but the 8 may be different

i would say PM staticlag or mdw 1000. they both have it

swoope

iTrader: (5)

the jury is still out on this.. i have chatted with mdw1000

beers

Brettus

iTrader: (2)

it makes no difference . Speed is measured by the wheel sensors so it does not matter what your diff ratio is - so long as your tyre diameter is same as stock it will read correctly .

staticlag

Brettus is right, the sensors are in the wheels and therefore gear ratios don't matter. speedometer remains correct as long as you are using the same rolling diameter as stock.

black-devil

Have you done the change of final gear in your car? Any problems during installation?

staticlag

https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/feed-4-77-review-6mt-126949/

I have it. Its a very difficult installation, at least a 6-9 hour teardown/rebuild for an experienced mechanic. I wouldn't recommend it for a DIY. Namely because the bearings need to be pressed on the gear in order to work and most people don't have access to a hydraulic press. So you could do it with a piece of pipe and a hammer and a lot of elbow grease but a lot of things could go wrong that would leave you running out to buy new tools or seals.

On a scale of 1-10, changing the gears on a mustang or other American muscle car = 3-4
changing the gears on this car = 10

black-devil

I made the change and everything is OK. About the old one (4,44) final gear, in which cars fit so i can sell it?

TeamRX8

iTrader: (25)

LSD and gears are interchangable for manual trans FD3 RX-7 TT and the RX-8 cars

black-devil

Is it possible to fit to a miata or honda s2000?

longpath

iTrader: (1)

Does the odometer derive inputs the same way?

Bladecutter

Nice bump.

But yes, the speedo and odometer are based off of wheel speed sensors.

BC.

TeamRX8

iTrader: (25)

as stated, if you changed tire diameter from OE it will be off some