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Nissan GU Diffs
Posted: Sat Nov 07, 2009 11:10 pm
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
Posted: Sun Nov 08, 2009 3:44 am
by (EST)MahviaDeTyrk
3.900 = 10-39
4.111 = 9-37
4.375 = 8-35
4.625 = 8-37
Posted: Sun Nov 08, 2009 9:30 am
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
Posted: Sun Nov 08, 2009 11:55 am
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.
Posted: Sun Nov 08, 2009 5:10 pm
by eighty8
Posted: Mon Nov 09, 2009 6:10 am
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
Posted: Mon Nov 09, 2009 6:39 am
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.