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Nissan GU Diffs

Tech Talk for Nissan owners.

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Posts: 102
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Nissan GU Diffs

Post by moddedgu »

Does someone know what the teeth count is for the different ratios?

Pinion and crown wheel tooth count pls

3.9
4.1
4.3
4.6

Cheers
David
Nissan Patrol GU, Wagon
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Post by (EST)MahviaDeTyrk »

3.900 = 10-39
4.111 = 9-37
4.375 = 8-35
4.625 = 8-37
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Post by moddedgu »

(EST)MahviaDeTyrk wrote:3.900 = 10-39
4.111 = 9-37
4.375 = 8-35
4.625 = 8-37
Cheers For that,
Do you know off hand what RPM I would be doing at 100km/H with 4.625 diff ratio running 35" MTZ tyres. TD 42 With aftermarket MTQ Turbo kit fitted.

I currently am doing 1900RPM at 100Km/H with 35" MTZ.

Was looking to see if I could get RPM up a tad to get max benefit from turbo as boost comes on at or around 2000RPM.

Cheers
David
Nissan Patrol GU, Wagon
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Post by A.J. »

You'd probably be doing around 2400-2500RPM@100km/h mate.

I have 4.375s and 35" tyres on my TD42 aftermarket turbo GU and I'm reving 2200RPM@100km/h.
2001 GU Patrol DX wagon, TD42, Air Lockers, twin spare carrier, Barrett HF, 35" Treps, high pinion rear, Staun beadlocks, 60l Engel and more!
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Post by eighty8 »

http://www.4lo.com/calc/gearratio.htm
[url=http://www.patrol4x4.com/forum/showthread.php?t=27334]The Weekend Warrior[/url]
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Post by Bush65 »

moddedgu wrote:
(EST)MahviaDeTyrk wrote:3.900 = 10-39
4.111 = 9-37
4.375 = 8-35
4.625 = 8-37
Cheers For that,
Do you know off hand what RPM I would be doing at 100km/H with 4.625 diff ratio running 35" MTZ tyres. TD 42 With aftermarket MTQ Turbo kit fitted.

I currently am doing 1900RPM at 100Km/H with 35" MTZ.

Was looking to see if I could get RPM up a tad to get max benefit from turbo as boost comes on at or around 2000RPM.

Cheers
David
Divide 1900rpm by your present diff ratio, then multiply by the proposed diff ratio.

eg if your present diff ratio is 4.11:1, then 1900 / 4.11 x 4.625 = 2138
John
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Post by turbo gu »

moddedgu wrote:
(EST)MahviaDeTyrk wrote:3.900 = 10-39
4.111 = 9-37
4.375 = 8-35
4.625 = 8-37
Cheers For that,
Do you know off hand what RPM I would be doing at 100km/H with 4.625 diff ratio running 35" MTZ tyres. TD 42 With aftermarket MTQ Turbo kit fitted.

I currently am doing 1900RPM at 100Km/H with 35" MTZ.

Was looking to see if I could get RPM up a tad to get max benefit from turbo as boost comes on at or around 2000RPM.



Cheers
David
Run 4.3 if you are going to use 35's.

4.6s don't make for good long distance driving!!

I have had both in a 4.2td GU wagon. 4.3s are the ones for 35's.
GU 42td wagon for touring
GU ute for the fun stuff
http://www.allterrain4wd.org.au/
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