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GU 4.8 diff ratio
Posted: Sun Feb 28, 2010 12:03 am
by RIZZO
Guys what ratio are the 4.8 gu diffs, are 3 9 like the rest of the petrols ???? need to go a lower ratio i think
Re: GU 4.8 diff ratio
Posted: Sun Feb 28, 2010 2:21 am
by bog warrior
RIZZO wrote:Guys what ratio are the 4.8 gu diffs, are 3 9 like the rest of the petrols ???? need to go a lower ratio i think
Auto's are 3.5 and manual's are 4.3
Posted: Sun Feb 28, 2010 6:59 am
by BowTieGQ
I thought the manuals got 3.9's.
Posted: Sun Feb 28, 2010 8:02 am
by big lux
just to be shure it will be on your compliance plate sumwhere it will have 39 or 43 in part of it.
Re: GU 4.8 diff ratio
Posted: Sun Feb 28, 2010 9:19 am
by weeman
bog warrior wrote:RIZZO wrote:Guys what ratio are the 4.8 gu diffs, are 3 9 like the rest of the petrols ???? need to go a lower ratio i think
Auto's are 3.5 and manual's are 4.3
as bog warrior states these are the correct ratios no 3.9 in them. just 3.5 for auto and 4.3 manual
Posted: Sun Feb 28, 2010 2:50 pm
by RIZZO
cheers guys if it has got 3.5 gears and I'm runnin 36"tyres would 3.9 make much difference, havin trouble at 100 its not clickin in overdrive much, or would it better to go 4.1 thats a fair size change then
Posted: Sun Feb 28, 2010 3:09 pm
by BowTieGQ
ratios
Posted: Sun Feb 28, 2010 3:48 pm
by hedgy
I had 3.5 in gu 4.8. I just finished turbo now and changed my gears to 4.11. it is perfect with turbo, but if i my 4.8 was naturally aspirated still, i would have gone 4.3 gears.
Re: ratios
Posted: Sun Feb 28, 2010 5:17 pm
by RIZZO
hedgy wrote:I had 3.5 in gu 4.8. I just finished turbo now and changed my gears to 4.11. it is perfect with turbo, but if i my 4.8 was naturally aspirated still, i would have gone 4.3 gears.
Are you happy with the trubo setup on it mate, I am thinking about doin that to mine, how much in total cost was the setup, and what setup did you get,
turbo kit
Posted: Sun Feb 28, 2010 6:57 pm
by hedgy
it is twice the car now since turbo fitted. It makes over 250 kw at the rear with 37's now. Torque is over 1250nm also so awesome for bush. Cost over 20k in total but thats stage 2 with computer, massive injectors, etc which can run up to 20 pound boost. Currently i only run 12 pound and that is insane. Engine internals are needed to run boost above 15 pound.
Re: turbo kit
Posted: Mon Mar 01, 2010 2:30 am
by bog warrior
hedgy wrote:it is twice the car now since turbo fitted. It makes over 250 kw at the rear with 37's now. Torque is over 1250nm also so awesome for bush. Cost over 20k in total but thats stage 2 with computer, massive injectors, etc which can run up to 20 pound boost. Currently i only run 12 pound and that is insane. Engine internals are needed to run boost above 15 pound.
Who did the turbo for you and what ecu did you use??
Re: turbo kit
Posted: Mon Mar 01, 2010 1:34 pm
by bogged
hedgy wrote:it is twice the car now since turbo fitted. It makes over 250 kw at the rear with 37's now. Torque is over 1250nm also so awesome for bush. Cost over 20k in total but thats stage 2 with computer, massive injectors, etc which can run up to 20 pound boost. Currently i only run 12 pound and that is insane. Engine internals are needed to run boost above 15 pound.
I'd like to see what figures you would get on a dyno run with 31's on it.
Re: turbo kit
Posted: Mon Mar 01, 2010 2:16 pm
by RIZZO
bogged wrote:hedgy wrote:it is twice the car now since turbo fitted. It makes over 250 kw at the rear with 37's now. Torque is over 1250nm also so awesome for bush. Cost over 20k in total but thats stage 2 with computer, massive injectors, etc which can run up to 20 pound boost. Currently i only run 12 pound and that is insane. Engine internals are needed to run boost above 15 pound.
I'd like to see what figures you would get on a dyno run with 31's on it.
Haha yeah i reckon