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4.778 Final Drive For $296

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Old 04-23-2006, 08:48 PM
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I have 17x8 wheels with Toyo 235/40's for the track. tires I belive ar 24.4 inches--gives it much more grunt exiting turns etc. I will never go back to a taller tire for the track. Oh yea and the entire wheel with lugnuts weights 40lb per bathroom scale.
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Old 04-24-2006, 01:09 PM
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Originally Posted by Nemesis8
What about 275/35/18 Falken 615Rts?

I think the 285/30's might rub, right?

not with the correct wheel offset

my 265/35-18 Yoko Advan Neovas are wider than the 275/35-18 RT-615s

OD may have me beat on diameter (25.0) and weight (44lb), but don't underestimate the effect of higher cornering speeds
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Old 04-24-2006, 03:51 PM
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hehe
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Old 04-24-2006, 07:07 PM
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After reading this entire thread, I'm wondering why you guys wouldn't just modify the transmission - this would allow us to better match the gear ratios to the power curve of the car. What's the reasoning behind changing just the final drive?
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Old 04-24-2006, 07:47 PM
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Probably because of parts availability. Plus I think a diff gear is easier to swap out.
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Old 04-24-2006, 09:45 PM
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less expensive too ...
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Old 04-26-2006, 11:40 PM
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Originally Posted by Hskr8
I'm pretty sure this is easy to do on another vehicle, but does anyone know if we can recalibrate the ECU for a change in tire size on the RX-8 so that the speedometer/odometer stay true?

not yet.

beers
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Old 04-28-2006, 10:18 AM
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you can buy an adaptor that will do that
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Old 07-25-2006, 02:37 PM
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So does this means our car can only get to 160MPH with the 4.778?
Last edited by theboy; 07-25-2006 at 02:48 PM.
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Old 07-25-2006, 04:30 PM
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Originally Posted by theboy
So does this means our car can only get to 160MPH with the 4.778?
the car can't get with 160 with or without it.
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Old 07-25-2006, 05:30 PM
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What the hell do you need to go that fast for anyway?
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Old 07-25-2006, 09:19 PM
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Originally Posted by Moostafa29
What the hell do you need to go that fast for anyway?

gotta keep up with the srt4s man
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Old 07-25-2006, 10:34 PM
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Well I'm glad I don't live in NJ. Don't have a silver 8 do you?
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Old 07-25-2006, 11:37 PM
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haha going at 160mph, please don't kill yourself.
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Old 07-26-2006, 06:50 AM
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hahaha
sorry guys we use KM/h here. i almost forgot they are different thing. 160MPH thats pretty fast.
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Old 07-26-2006, 06:56 AM
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Thats still like 120-130mph.
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Old 07-26-2006, 09:48 AM
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normally its even hard to get 184KM/h on roads here, thats where the speed cut is.
how much MPH is that?
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Old 07-26-2006, 09:54 AM
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160 KPH = 99.4 MPH

Divide KPH by 1.61 to get MPH

-Kabong
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Old 07-27-2006, 12:41 AM
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oh~ thats mean 180KM/H is 112MPH

icic thx
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Old 07-27-2006, 11:48 AM
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one question in mind, will this mod make the car go hot easily when i am at constant 130km/h ? cause i travel long distance often.
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Old 07-27-2006, 02:24 PM
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Originally Posted by dillsrotary
the car can't get with 160 with or without it.
i've had mine over 160 mph...
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Old 07-27-2006, 02:26 PM
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Originally Posted by theboy
one question in mind, will this mod make the car go hot easily when i am at constant 130km/h ? cause i travel long distance often.

it will run a higher rpm.. under a load/full throttle maybe hotter especially if you are sitting still or on a dyno.
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Old 07-27-2006, 07:26 PM
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Oh ****...
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Old 07-28-2006, 06:35 AM
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oh **** man. it was my dream to have 4.777 higher repond, but then its a long distance car. hot and not so fuel efficiency i guess.
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Old 07-28-2006, 07:02 AM
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The difference really isn't that great. Check out the threads in the Far East Asian section, as there are a few members that have them installed. Mine is due to arrive next week, but I doubt I'll be installing it anytime soon.
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