patrol diff ratio`s 4 35 inch tyres-4.6 or 4.88

Post by **HI 75** » Thu May 11, 2006 12:34 pm

hey all. i have a 94 ti auto patrol, what diff ratio should i fit?? 4.6 or 4.88??
i have new 35`s & 4 speed auto with lock up converter, always kicking down at the wrong time on highway...
cheers daz
newcastle

Post by **jessie928** » Thu May 11, 2006 1:49 pm

4.6's will bring your auto with 35's back down to near perfect factory gearing.

Jes

Post by **hottiemonster** » Thu May 11, 2006 4:36 pm

4.6s as you can get them genuine, 4.88s are only aftermarket and are not needed for 35s, 4.6s will bring gearing to standard

Post by **rover1** » Thu May 11, 2006 8:51 pm

dont worry about, better on the highway as it is, just pull some gears into the transfer case

Post by **TEAMRPM** » Thu May 11, 2006 9:09 pm

hi, 4.6's will allow you to run 35's really nicely. your speedo will be accurate and most of all if you use a genuine based gear(s) then your strengh still remains Nissan (strong) and at the end of the day i have a set available like many others... 4.88 aren't all that common because of there weakness history. 4.6's and transfer case gears maybe.. your call

cheers

Luc

Post by **giantracing** » Thu May 11, 2006 9:23 pm

FOR A 4.2 AUTO THEY CAME OUT 3.9 RATIO, 4.6 WITH 35 WILL CAUSE IMPROPPER GEAR CHANGING, AND YOUR SPEEDO OUT, THE CLOSEST RATIO FOR YOU IS 4.3. THIS WILL BE GOOD FOR YOUR NEEDS

Post by **TEAMRPM** » Thu May 11, 2006 9:36 pm

giantracing wrote:FOR A 4.2 AUTO THEY CAME OUT 3.9 RATIO, 4.6 WITH 35 WILL CAUSE IMPROPPER GEAR CHANGING, AND YOUR SPEEDO OUT, THE CLOSEST RATIO FOR YOU IS 4.3. THIS WILL BE GOOD FOR YOUR NEEDS

easily rectified! if your happy to run 35's on 4.3s fair enough. for the sake of a couple of extra bits id much rather run 4.6's regardless of 3.9's.

cheers

Post by **matsmad** » Thu May 11, 2006 9:56 pm

Mine runs 4.6's with 35" claws and drives nicely

Post by **YankeeDave** » Thu May 11, 2006 10:03 pm

listen to giantracing, he is correct here.

Post by **DBW** » Fri May 12, 2006 6:48 am

What about GU4.5 Manual? (On 35's)

They are 4.1's I think? Therefore, 4.6's are the go?

Post by **jessie928** » Fri May 12, 2006 8:46 am

the auto's generally come out with 4.1, the 5 speed manuals come out with 3.9's, maybe there is some differences as they rolled them out aswell.

35's and freeway driving dont mix when you have the origional gearing and origional engine , or most any engine actually probably bar a 7.3 litre turbo diesel.
when you put on 35's the torque is in the wrong place, and its not enough to push the vehicle at freeway speeds. it will drive like a pig.

because the 35's look so horney and you love the way it you will accept the way it drives.

Jes

Post by **CRUSHU** » Fri May 12, 2006 10:23 am

jessie928 wrote:the auto's generally come out with 4.1, the 5 speed manuals come out with 3.9's, maybe there is some differences as they rolled them out aswell.

Jes

Both my GQ Auto's, an '89 and a '93, were 3.9 gears. My mates '90 Manual was a 4.11. All with 4.2 petrols.

Post by **jessie928** » Fri May 12, 2006 10:36 am

thats some weired arse shite

the auto's i have pulled down ( all being SWB's) have been 4.1 and the 5 speeds ( also SWB's) have been 3.9s. I have sold centres from these vehicles as marked also?
I always thought the higer gears made up for the shitty first gear in the auto.

hmmmmmmm,
maybe i am remembering the exact reverse, could be possible!

Jes

Post by **HI 75** » Fri May 12, 2006 2:40 pm

thanks for the ideas,i found a thread on 4wd monthly stating the plate on the rh firewall has hg39 or hg46 or gh37,this refers to hypoid gear 3.9. mine is hg39....
also 2.8 gq & qu run 4.625 but are hard to get..
$600 bucks each diff set has been the best price so far,& thats trade price.
cheers all
daz
newcastle

Post by **hottiemonster** » Fri May 12, 2006 4:51 pm

giantracing wrote:FOR A 4.2 AUTO THEY CAME OUT 3.9 RATIO, 4.6 WITH 35 WILL CAUSE IMPROPPER GEAR CHANGING, AND YOUR SPEEDO OUT, THE CLOSEST RATIO FOR YOU IS 4.3. THIS WILL BE GOOD FOR YOUR NEEDS

mine came with 3.9s and the speedo was correct for 31x10.5s, now i have gone 4.6 and the speedo is out by about 2 percent with the 35x11.5 simex and was correct with the 35x12.5 tyres, so i dunno about that.

although mine is manual gearbox.

Post by **zookjedi** » Fri May 12, 2006 6:35 pm

my 4.5 p auto gu has 3.9 gears , off road with the marks gears all is good but on road it struggles to hold top gear ( by struggle i mean not in unless dead flat and no wind) , im going 4.6's soley as it will be in top gear earlier and wont kick down on the slightest hills and will tow better and i dont think it will rev to high on the hwy to be an issue as i would have gain an extra gear

Post by **j-top paj** » Mon May 15, 2006 1:12 am

whats wrong with the 4:88s?
im thinking of putting some in mine soon.

Post by **CRUSHU** » Mon May 15, 2006 7:49 am

took my GQ for a drive yesterday, and speedo checked it. it is under by 10% with 4.6 and 35" Kelly AWR's. i was sitting on 110 to be doing 100kp/h.

Standard it was 31.5 - 32" and 3.9 gears.

Post by **HI 75** » Mon May 15, 2006 10:15 am

4.6 IT IS THEN
CHEERS
ALL
DAZ
NEWCASTLE...

PS; ARE ALL THE BODY MOUNT BOLTS THE SAME LENGTH ??
FOR FUTURE BODY LIFT "2"..

Post by **bogged** » Mon May 15, 2006 10:19 am

HI 75 wrote:PS; ARE ALL THE BODY MOUNT BOLTS THE SAME LENGTH ??
FOR FUTURE BODY LIFT "2"..

nope

Post by **CRUSHU** » Mon May 15, 2006 10:22 am

the front 8 are, the rear 2 are different.

Post by **HI 75** » Mon May 15, 2006 3:57 pm

ive got a mate with a worked 350 & turbo 350 auto in a gu2.8 running 4.6`s,
he needs 3.9`s,
we are doing the sway this weekend at my workshop.
are the housings the same & axle spline the same???
i`ll let you all know how this goes,
i should save a heap of fuel going the fraser isl from newcastle with the changed ratio this xmas...

Post by **JeSTeROCK** » Mon May 15, 2006 9:00 pm

Looks like the factory 4.6's are a good option.

Does anyone have any good experiences with after market 4.88's ?

Post by **giantracing** » Tue May 16, 2006 6:43 am

if you like replacing diff centres every 3rd weekend 4.88 are for you .
the pinon gears are very weak, they tear the teeth off. you are better doing transfer case gears , that way your final drive is left alone(2wd). only low gear lower................

Post by **bogged** » Tue May 16, 2006 9:42 am

I reckon he should go with the 5.12's myself.

Post by **zookjedi** » Tue May 16, 2006 6:41 pm

i know a few guys either currantly running 4.88 or have in the past and neither that i am aware has had an issue with them , and yes they do drive there vehicles hard

Post by **JeSTeROCK** » Tue May 16, 2006 11:51 pm

I'm talking petrol carbie with 35's. Might be a little week for bigger wheels and a V8 or big turbo diesel

Post by **4Speed** » Tue May 23, 2006 5:08 pm

Which stocky runs 4.6's???????? if shorty gq's run I think 3.7's, LWB 4.2 GQ's run 3.9 and 4.1's, GU LONG wheel Base DX's run 4.1 and the coil, leaf spung utes run 4.3 which ones run 4.6's? 2.8 d or the ZD30??? whats does the 3L 6cylinder petrol run???

Someone should make a list dam it!!!!!

anyway I'm off to buy a turbo, stuff the ratio's....2 many teeth to brake

Post by **YankeeDave** » Tue May 23, 2006 5:11 pm

2.8 d run 4.625 standard ratio

Post by **YankeeDave** » Tue May 23, 2006 5:11 pm

2.8 d run 4.625 standard ratio

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patrol diff ratio`s 4 35 inch tyres-4.6 or 4.88

patrol diff ratio`s 4 35 inch tyres-4.6 or 4.88

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