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someone please explain my gear ratios

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19 replies to this topic

#1
licky

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Hi everyone. I have a early model gsr (93). From everyone that I have spoke to it seems as if it revs a lot higher through gears than what it should. 5th gear at 100 is at around 3250-3300 rpm. 4thbgear is at 4100. Now I have checked the gearbox and the code matches up to a gsr gearbox code. So could this possibly mean the centre and rear diff has been changed?

If someone could please make sense of this for me that would be great :)



#2
DOUGMO

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sounds closer to evo ratios, front and rear cw&p may have been changed?? or are you running 10" rims? :ph34r:

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/// eastern creek 1:35.4 /// winton short 1:01.4


#3
BMGTZ

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these things are so old now that it could have been rebuilt as george suggests with 3.909 instead of 3.545

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#4
Geo&Kez

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Shit Brian/George, don't say that. They are the sort of numbers I get at those speeds with mine, about 3250 @ 100 GPS speed on a 17inch

Hmmm maybe it's time to check the numbers, I figured that was normal.
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#5
DOUGMO

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for your car its better imo george

GENUINE CE9A evo2 gsr track car
all fabrication BJP AUTOMOTIVE
winton 1:27.4 /// sandown 1:21.5 /// phillip island 1:49.2 /// haunted hills 59.1
/// eastern creek 1:35.4 /// winton short 1:01.4


#6
Geo&Kez

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Yeah agreed. Just means instead of the new rear diff I HAVE to have for the EvoIII gearbox change, it becomes the spare rear diff it's GOOD to have! (Brian understands this).

I'll need to confirm this. I have plenty of video and data that I can confirm what my rev V's speed is, but really need to confirm what a standard 93 GSR is rotating at when at 100.
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#7
Evo-00x

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Your speedo/tacho could be out too.
Check your speedo speed vs a GPS Satnav system to compare if they are close to the same speed first.
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#8
licky

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Speedo is spot on with the GPS :/

#9
licky

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So prehaps E3 driveline?

#10
leadfoot

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Sounds about on par with mine aswell an I doubt that I managed to land evo gear front and rear from two separate sellers as gsr

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#11
licky

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Sounds about on par with mine aswell an I doubt that I managed to land evo gear front and rear from two separate sellers as gsr


Got my hopes up and everything

#12
EVL20T

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Licky, Kyles is FWD

Deffinately doesn't sound like 3.545 ratios, u should see 3000rpm at 100klm/h if it was 3.545
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#13
leadfoot

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um i havn't been fwd for 6 months!

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#14
EVL20T

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Ahh crap :P

I know your car is AWD, but some reason I forgot... must be the drugs
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#15
Geo&Kez

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Share the drugs dude!

I looked at my Haltech data and I'm the same as Licky. About 3280 @ 100km/h

All the casing stamps say GSR. Rear diff is coming out soon so might count the teeth. Unexpected happy ending if it's a 3.9.
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#16
BYBY5L

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Ahh crap :P

I know your car is AWD, but some reason I forgot... must be the drugs


not enough i suspect??? :ph34r:

Edited by BYBY5L, 07 June 2013 - 12:44 PM.


#17
GSRWRC

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Sounds normal to me. I was always at around 3200rpm @ 100kph in my GSR and Mirage in 5th.

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#18
CLuTZ

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I used to sit on 3000rpm @ 100kph with 3.545 :P

#19
Geo&Kez

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Well that clears it up!!!? Lol
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#20
leadfoot

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does this help? here a photo of my car doing 100 on the m1 (yes i was naughty)
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