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What's Needed For An R32 Front Diff Swap?

GSX-R35
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GSX-R35 Community Regular

GSX-R35

Posted
Posted

Now that we've gotten in the extended oil sump for the new RB26 that's going into my R32 I'm trying to figure out what parts we'll need to swap the front diff to the new pan. Can anyone tell me if there's a rebuild kit or install kit for the RB26 front diff and where to get them?

Thanks in advance for your help.

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Now is the time to replace it with a Quaife LSD

http://www.sau.com.au/forums/topic/440091-rebuild-gtr-front-diff/

but if you decide to keep the open diff you can just put new seals in or go to town with all new bearings. I have a list of the bearings with Nissan Part numbers but I can't remember what modfel GTR they fit. If you quote just one part number to a Nissan dealer they should be able to tell you.

post-49463-0-93291900-1451778245_thumb.jpg

Front diff bearings and seals text.doc

  • Like 3
GSX-R35 Community Regular

GSX-R35

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  • Author
Posted

Now is the time to replace it with a Quaife LSD

http://www.sau.com.au/forums/topic/440091-rebuild-gtr-front-diff/

but if you decide to keep the open diff you can just put new seals in or go to town with all new bearings. I have a list of the bearings with Nissan Part numbers but I can't remember what modfel GTR they fit. If you quote just one part number to a Nissan dealer they should be able to tell you.

Thanks for the info! I'm not sure my budget has room for a front diff upgrade currently but I'm definitely considering it.

sneakey pete Grand Master

sneakey pete

Posted
Posted

Doing mine at the moment, that picture shall be useful for me also, thanks.

Its a hard one with the diff upgrade if the budgets are marginal. It is a big chunk to add do your budget, but then again its another few thousand bucks to pull the engine to do it again in the future.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

What are you doing with the car?

Circuit, street (runs or hills) or drag?

How much power?

Either way, change it now.

If it's anything that is going to involve RPM launches - so drag, and over 300rwkw/400rwhp... Then you absolutely MUST change it now. If you've spend big $$$ on a after market sump, you do NOT want the stock front diff blowing as it will take out some/all of the front sump if it fails badly enough which is anyone's gess. It happened to me and a few others over the years, so by spending now and doing it right, you'll thank yourself.

Its not "so much" needed for circuit but honestly, the improvements you get from doing it are IMO, one of the best value vs gain mods EVER. I've said it before that if I had my time in a GTR again I would do the following

- Small turbos/basic 300rwkw setup.

- Diffs, both

- Transfer Case

Rather than rebuilding motor and doing for 550hp+ as the driving experience/speed of the car is just so greatly improved it's outta this world levels of difference.

I would say Nismo for Drag and Quaife for circuit seems to be the consenses. That said I used my Nismo to blistering effect in 80-120km/h motorkhana based stuff, suited my driving style.

  • Like 2
GTRPSI Mentor

GTRPSI

Posted
Posted

Dont forget that most aftermarket diffs are a little larger in casing size and wont fit into the front diff case without some grinding in the right areas, best done when its all apart when its easier to get in there with a die grinder and to clean out all the alloy shavings.

We went drag direction and installed a Cusco setup as a one way diff.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

But yes, 100% - you will NEVER regret a front diff upgrade - as long as you have done the rear.

Simple some of the best mods you can do to a GTR if you are aiming to enjoy the driving of it

  • Like 1
Piggaz Grand Master

Piggaz

Posted
Posted

But yes, 100% - you will NEVER regret a front diff upgrade - as long as you have done the rear.

Simple some of the best mods you can do to a GTR if you are aiming to enjoy the driving of it

Even without doing the rear, it was one of, if not the best mod I did. Front, rear, transfer was my order. It just gets better every time!

GSX-R35 Community Regular

GSX-R35

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Posted

Thanks for the replies everyone. I ended up getting a Nismo LSD. Although the Quaife is the better unit for road course no one carries it here in the US and at over twice the price of the Nismo I couldn't justify it anyway since my R32 will mainly be a weekend/show car and will probably only see the track on a very rare occasion. Either way, I figured if the Nismo was good enough for their JGTC cars then it'll do fine in my R32 lol.

  • Like 1
  • 3 weeks later...
HarrisRacing Proficient

HarrisRacing

Posted
Posted

Thanks for the replies everyone. I ended up getting a Nismo LSD. Although the Quaife is the better unit for road course no one carries it here in the US and at over twice the price of the Nismo I couldn't justify it anyway since my R32 will mainly be a weekend/show car and will probably only see the track on a very rare occasion. Either way, I figured if the Nismo was good enough for their JGTC cars then it'll do fine in my R32 lol.

Look at my build for pretty detailed pictures. It should be noted that I cut my own shims, but buying factory would have been easier (beware there are a LOT of factory shims).

Here's a link

http://www.sau.com.au/forums/topic/447384-r32-gtr-build-in-usa/?p=7559306

GSX-R35 Community Regular

GSX-R35

Posted
  • Author
Posted

Look at my build for pretty detailed pictures. It should be noted that I cut my own shims, but buying factory would have been easier (beware there are a LOT of factory shims).

Here's a link

http://www.sau.com.au/forums/topic/447384-r32-gtr-build-in-usa/?p=7559306

Thanks for chiming in. I saw your thread before and that's partly why I got the Nismo LSD since like you I couldn't find a better alternative that was available to someone in the US. I'm waiting to see what my friend finds when he dives into the swap but yeah it's amazing how many sizes of shim Nissan lists for the LSD lol.

  • 4 months later...
HarrisRacing Proficient

HarrisRacing

Posted
Posted

FYI. Now that my car is on the road and I have about 1000 miles on it, I'll comment on the Nismo Diff.

I LOVE IT!

Super quiet, after about 500 miles of street driving any noticeable chatter has gone away. There is a slight drag when pulling into driveways or at low speeds and extreme steering angles, but that thing grabs like a cat on carpet on throttle. You'd better have the wheel pointed where you want the car to go on throttle because it almost pulls the car in the direction when it hooks. Incredible unit for the money.

  • 3 weeks later...

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