Differential Ratios

[sambo]

Hi mate. My Harrison roller was delivered with the viscous 4.11 GTS-T centre which comes with the 5 bolt half shafts as you've shown above. I picked up a 3.69 helical from the S15 and it has 3 flanges on the half shafts each with two bolts. So you need the S15 half shafts to go with the S15 centre. Make sure you get the half shaft bolts as mine shipped from Sydney without and the wrecker stuffed me around when I asked for them. Genuine from Nissan they weren't cheap! They're an odd design and I couldn't find a good alternative at the bolt shop.

Here are some photos from my gallery showing the S15 diff on the left, R33 on the right. Below that, the R33 half shafts are in the middle and S15 ones on the outside.

[1 TUF AC]

Originally Posted by sambo

Hi mate. My Harrison roller was delivered with the viscous 4.11 GTS-T centre which comes with the 5 bolt half shafts as you've shown above. I picked up a 3.69 helical from the S15 and it has 3 flanges on the half shafts each with two bolts. So you need the S15 half shafts to go with the S15 centre. Make sure you get the half shaft bolts as mine shipped from Sydney without and the wrecker stuffed me around when I asked for them. Genuine from Nissan they weren't cheap! They're an odd design and I couldn't find a good alternative at the bolt shop.

Here are some photos from my gallery showing the S15 diff on the left, R33 on the right. Below that, the R33 half shafts are in the middle and S15 ones on the outside.

so pretty much you're saying I need a S 15 diff with S15 axles. And the spline end of a s15 axle will slip straight in my r32 gst t wheel hubs with no problems at all. Do I need to put any spaces or anything like that or do they fit perfect?

[Rog246]

I think you be ok, & yes get the half shafts AND bolts-it will make life a lot easier for you

[1 TUF AC]

thanks for your help sambo. I will be off to the wreckers this week and if it's as easy as what you say my 4.11 nightmare will be over very soon.

[sambo]

Originally Posted by 1 TUF AC

And the spline end of a s15 axle will slip straight in my r32 gst t wheel hubs with no problems at all. Do I need to put any spaces or anything like that or do they fit perfect?

I can tell you the R33 GTS-t was a straight swap and I'd put money on the R32 being the same. There were differences with the GTR (twin turbo Godzilla) but we're talking about the single turbo GTS-t here, so you should be right. No spacers on mine.

You will probably also need adjustable control & camber arms as well as traction rods to get it all setup correctly in the Harrison.

Good luck!

[1 TUF AC]

I decided to put the diff in today and I have ran into some problems. The S 15 axles that I got from the wrecker are different length. The left side is okay but the right side is about 40 mm longer. I wonder if the car wreckers gave me the wrong ones. I tryed to put it in anyway but it won't Go in. The left goes in beautiful but the right one won't go in. If anyone's got a s 15 right hand axle laying around I'd be very grateful if they could measure it for me so I can see If the The wrecking Yard gave me the wrong one.

[Rog246]

Mate I had the same trouble when I was putting mine together. I swapped the 1/2 shafts from side to side !! They are not the same length either side.
I felt bit of a dill to be honest but fitted like a greasy stick in pig's bum when I swapped 'em over !!

[1 TUF AC]

Originally Posted by Rog246

Mate I had the same trouble when I was putting mine together. I swapped the 1/2 shafts from side to side !! They are not the same length either side.
I felt bit of a dill to be honest but fitted like a greasy stick in pig's bum when I swapped 'em over !!

I ended up getting them both in but the right hand side is very tight with only 15mm play. I definitely put them the right way. I think there's a possibility that the wrecker Gave me the wrong Axle. Or this conversion doesn't work on a r32 rear ends. Only r33 rear ends. Might have to get the axles shortened.