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Skyline diff = our diff? 

 

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 Post subject: Skyline diff = our diff?
Posted: Sun Feb 17, 2008 11:06 pm 
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I've been looking at a couple of options for a diff replacement. I want to beef up the lsd and recall reading in a few places that the r31/r32 skyline diff gears are interchangable with ours. If this is the case, then is the lsd interchangable too? Surely this would broaden our options for a solid lsd replacement as there'd be plenty of Japanese brands who do tough lsds for drifting and hardcore drag skylines and s**t, if this is the case?

 

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Posted: Sun Feb 17, 2008 11:27 pm 
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im pretty sure theyre the same. Pintara ones are so i assume Skyline ones are too.

 

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Posted: Mon Feb 18, 2008 1:17 am 
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i heard that they fit but are weaker...

 

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Posted: Mon Feb 18, 2008 1:24 am 
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r32 is different to r31

r31 skyline and pintara use the same BW diff as the falcons and commodores

someone with some more knowledge will be able to confirm the exact number of splines etc for each model but from memory r31 pintara is 25, skyline 28. V8/Turbo commodores VL onwards are 28 spline and n/a 6cyl 25 spline.
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Posted: Mon Feb 18, 2008 8:05 am 
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I blew the diff on my Bluebird TRX and was told there are 2 diffs. the 8 bolt and 10 bolt. the 8 bolt that I had was weak as piss but engineered so much better than my old HQ kingswood. The changeover dropped straight in no leaks or issues. The kingswood leaked at the hubs and I had a crap of a time trying to get it all sorted.

 

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Posted: Mon Feb 18, 2008 10:24 am 
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natho wrote:
r32 is different to r31

r31 skyline and pintara use the same BW diff as the falcons and commodores

someone with some more knowledge will be able to confirm the exact number of splines etc for each model but from memory r31 pintara is 25, skyline 28. V8/Turbo commodores VL onwards are 28 spline and n/a 6cyl 25 spline.


yes thats about right

only the gears and centre are interchangeable with the ford
the axles are different because of length
housings are different obviously

there are 2 types of centers - 2 pinion/4 pinion
there are 2 types of splines - 25/28
there are 2 series - 0575/0578

some stuff fits easily some doesnt and some can be made to fit with mods

what do u want to do??

 

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Posted: Mon Feb 18, 2008 11:29 am 
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yeah your idea about jap aftermarket diffs wont work because theres bugger all support for it

its an aussie diff....it just happend to be used in a australian jap car...the jap skylines had a jap diff not an aussie diff

 

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Posted: Mon Feb 18, 2008 12:05 pm 
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Nice thinking though! And dont stop here because someone on the internet told you it wont work!

 

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Posted: Mon Feb 18, 2008 11:03 pm 
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gogetta wrote:
yeah your idea about jap aftermarket diffs wont work because theres bugger all support for it

its an aussie diff....it just happend to be used in a australian jap car...the jap skylines had a jap diff not an aussie diff


Cheers for all the input guys. Maybe I wasn't clear enough at the start. I'm not looking at replacing the whole diff (well, I might be) but as far as the Japanese aftermarket stuff goes, I'm just looking at the lsd centres.

Those lokka diffs that everyone's been getting from some 4WD place, are they all the same units or are they specific models for the different cars? I'm not interested in them myself, however if they are all the same and they fit in ours, then there must be a certain model skyline that will have interchangable lsd centres as the e-series. The reason for this is that I recall reading a link to a skyline forum in relation to the lokka group buy.

So, if I can work out which Skyline internals is fully compatible with mine (if any), it should open up a whole new range of products available.

I've also been looking at a 9" conversion from VEEM. I don't know how good these are, so if anyone has any knowledge on them, please feel free to share.

 

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Posted: Mon Feb 18, 2008 11:09 pm 
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if you do decide to get some Skyline gears, triple check them for any signs of weakness, most would have had a hard life and be absolutely f**k lol

 

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Posted: Mon Feb 18, 2008 11:49 pm 
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the 4 pinion BW diffs are strong....

id just go with a nice tight rebuilt bw...

if you want to look at aftermarket centres id give a diff joint a call as there might be local alternatives

depends on what u want it for

 

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Posted: Tue Feb 19, 2008 12:00 am 
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the pintara diffs are a good mod aswell because the ratio is 4.11 or very close to that

 

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Posted: Fri Feb 22, 2008 8:37 pm 
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4.11 is a bit too short for me. I'm after 3.7s or 3.9s, but the gears aren't the issue right now. It's the centre I'm after and I don't want to use OEM s**t, I want aftermarket but something that's stron and fits. I just want to open the options up a bit if it's at all possible...

I'm not going to bother rebuilding my diff cos for not too much more I'll be able to get something that will be able to handle a hell of a lot more power. I think the stock lsd would s**t itself before long with the setup I have now.

 

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Posted: Fri Feb 22, 2008 8:58 pm 
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what setup do u have?

 

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Posted: Fri Feb 22, 2008 11:40 pm 
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275rwhp - 13.9@100mph

Got trick flow top end kit in. I have a mate with an EL XR6 who got his lsd rebuilt and after about 6 months it's single spinning again

 

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