nmarz77

I'm glad there's finally somebody on this forum that understands this.

staticlag

Update: about 1000 miles have been put on the car since this change.

I have to say that the build quality is exceptional, the rear end is silent, feels great.

The extra torque really has made this a whole new car, and I can still feel the difference. Definitely up there on the list of recommended mods.

After a few full tanks I'm going to go ahead and say that this mod will reduce your mileage by about 1.25 mpg for 60% city and 40% highway driving. It does help around town as I find myself cruising in 5th and 6th gear on surface streets regularly. But highway mileage is down though, haven't gone on any long road trips so I really couldn't comment on a pure highway loss in mpg number.

WoodsOfGreenRx8

How did she do on the track Dan?

olddragger

iTrader: (3)

with the diameter tires i run on the track it has been calculated that it is equivalent to a final drive of 4.78---so i can attest that it does really change the car.
olddragger

Brettus

iTrader: (2)

what size is that OD ?

olddragger

iTrader: (3)

235/40 17"toyo ra 1. tire+rim+lugnuts =40lbs also!
OD

olddragger

iTrader: (3)

my avitar is a pictures with those rims/tires on the car
olddragger

Brettus

iTrader: (2)

I may go the same way for some track rims .
do you run those just on the track or street as well ?

Raptor75

Any 1/4 mile runs with times?

staticlag

It felt good on the track. the shorter gearing Was really apparent in one turn where i kept hitting my limiter. in general the extra torque was a good way to get out of some turns. it felt very natural, it felt easier to heel toe. my in turn rotation felt tighter when i let off the gas. it felt very good. i can't wait to auto x it. it would probably eliminate some first gear action on some courses. less shifting = faster times

olddragger

iTrader: (3)

just for track. and you are exactly right--gearing is a big part of running anything
OD

staticlag

Update 12/8/07:

Feels great! No noises or odd behavior from the diff.

nmarz77

Good to hear. Have you done a comparison run yet?

YaXMaNGTO

I'd like to see a comparison run too! Grab one of your local RX8 buddies and video a 20 roll, for academic purposes.

staticlag

Just some non-videoed, non formal runs.

As soon as the snow melts here we will get right on it!

nmarz77

So what was the outcome of these runs?

chancejat

iTrader: (2)

cant wait to see the #'s

willnordacgreen1211

iTrader: (3)

SUPER old thread bump! there is a local craigslister selling a 4.77 gear for stupid cheap and was wondering if the mazda bering kit was %100 necessary or just something you decided to do? im buying this thing regardless but just wanted to know what I was getting myself into.

Thanks!

edit: just read this. must have glossed over it.