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changing diff ratios

Tech Talk for Nissan owners.

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Posts: 1068
Joined: Mon May 31, 2004 2:41 pm
Location: in the ghetto

changing diff ratios

Post by morkz »

Hey

I just picked up some 4.6 out of 2.8 GU, how hard is it to change ratios can it be done with general mechanical tools or do i need special equipment.

just going to change ratios and use my old centre's any advice be appreaciated.

i know there was talk of it with GQ stuff but couldnt find the thread if someone does come across please let me know

cheers
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04 GU TD6 wagon with some ARB stuff
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Morkz Media Web and Graphic Design
Also webhosting and domain registration.
Posts: 45
Joined: Sat Nov 30, 2002 7:39 am
Location: Mackay - Queensland

Post by Grungle »

I rang up today to price changing my 4.88's to 4.11's and they want $400 each end ($800) to swap and that is without new bearings :shock:

Changing the crownwheel is simple as it is just a few bolts. You will need a bearing puller for the pinion which MAY stuff your bearings (that is why they always quote new bearings). When removing your diff centre from the housing mark one side of the carrier bearings and bracket so they go back on in the exact position they were removed (I used a scribe and a single line for one side and 2 lines for the other)

You can get away with standard tools but will need a bearing puller.

Were it gets tricky is setting up your pinion backlash (I think this is what it is) as they use dial guages etc to get perfect. This is the main reason people use a transmission specialist.

Regards
David

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Posts: 1068
Joined: Mon May 31, 2004 2:41 pm
Location: in the ghetto

Post by morkz »

cheers


thanks for the advice i'm probably going to take them down to a mates workshop pull them all out and the guy around the corner said he would charge around $100 per end to get the backlash done
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04 GU TD6 wagon with some ARB stuff
---------------------------------------------
Morkz Media Web and Graphic Design
Also webhosting and domain registration.
Posts: 45681
Joined: Wed Nov 27, 2002 10:13 am

Post by bogged »

Grungle wrote:I rang up today to price changing my 4.88's to 4.11's and they want $400 each end ($800) to swap and that is without new bearings :shock:


I had quotes from $400ea, upto $1200 with complete bearings and seals front and rear... That included servicing the LSD....

aint cheap eh!
Posts: 1068
Joined: Mon May 31, 2004 2:41 pm
Location: in the ghetto

Post by morkz »

damn thats heaps.........

youd probably want to swap comeplete centre for that price
---------------------------------------------
04 GU TD6 wagon with some ARB stuff
---------------------------------------------
Morkz Media Web and Graphic Design
Also webhosting and domain registration.
Posts: 45681
Joined: Wed Nov 27, 2002 10:13 am

Post by bogged »

morkz wrote:damn thats heaps.........

youd probably want to swap comeplete centre for that price


that was. Rebuilding the second set, them R&R of the ones in the car.
Posts: 1068
Joined: Mon May 31, 2004 2:41 pm
Location: in the ghetto

Post by morkz »

bogged wrote:
morkz wrote:damn thats heaps.........

youd probably want to swap comeplete centre for that price


that was. Rebuilding the second set, them R&R of the ones in the car.
:shock: :shock: :shock: :shock: :shock: :shock: :shock:
---------------------------------------------
04 GU TD6 wagon with some ARB stuff
---------------------------------------------
Morkz Media Web and Graphic Design
Also webhosting and domain registration.
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