25 replies to this topic

[debkar]

Hi, do you have some pictures at all? Sounds good though, what was your old ratio?

Regards Simon

[debkar]

I'll take some pics on the weekend, I have been running a 3.55 but have held out for another 3.9 as it suits dragging better. I will be in top gear before half track then its a 5+ second 1/8mile run in top gear.

That would be great, thankyou.

[warrenm]

The 4.37 would be my pick for racing, I'm using a 4.88 & 26" tyres.
Warren

[debkar]

Heres a couple of pics with the Calais wheels on the rear.... the front will come by next year after I sort out the final ratio in the rear. I will also get rid of the extra ratios and the standard Hilux LSD. I have to transfer the 3.9 crown wheel to the new 4-spool and give that a go for a couple of months.

The tires I want are 205x55x15 Bridgestone Adrenalin as they look like they should be a nice tire and they are approx the same size as the 14's I have been using. These 65 series are a bit tight at the rear where the guard curls under, i took a close up of the area. Now remember that I have a different offset than standard now so yours will sit further in.
 hilux_diff_1.jpg   131.33K   55 downloads  hilux_diff_2.jpg   111K   47 downloads
 hilux_diff_3.jpg   152.04K   35 downloads  hilux_diff_4.jpg   136.35K   34 downloads

Looks very good, be very interested to see what times you run with the new set up,

Regards Simon

[kudu]

great bit of kiwi ingenuity well done i like it

I hope it all goes well as I have heard that the Hilux diffs are not that strong. A mate of mine has a fairly high horse power car and tried the hilux diffs. Blew every time. He then went to Ford Courier diffs and no hassles so far....and thats after some punishment!

[kudu]

Can you tell us what sort of HP and what size car he was using,
was the unit checked and adjusted and I assume it was drag racing?
I can tell you that these have been put behind a huge mix of smaller cars with no problems but like the supra 5-speed if you start throwing huge torque into them thats the killer not the HP.

Hi,
I am almost ashamed to say, but the car my mate has is a rotary. It is a mazda RX4. By no means standard he has spend $100,000+ on it and the majority of that would be on the drive train. And it is a high HP engine.
It is not a drag racing car and sorry I do not know if it was checked or adjusted. (I assume it would have been.)
Anyway he went through a few Hilux diffs before changing to the courier unit and has had no breakages.....so far.

BTW.... I am in NZ as well.

Cheers,
Scott.

[warrenm]

I've had a Hilux diff fitted to my LJ for 3years without any signs of probs. at this stage. I have a CIG locker( full spool is also available from Romac), not an LSD. I machined the axle bearing surface to suit Holden wheel bearings so that Holden disc brakes could be fitted,which haven't be fitted at this stage. The axle tubes have a machined surface at the ends which I then used the ends from a VL borgwarner diff machined to fit the Hilux tubes. As I change ratios from 1/4 1/8th,it takes about 40 minutes on the ground or much quicker on a hoist. There's also a 3.54 ratio that was fitted to Toyota Crown & maybe fitted to the newer Hilux.
Warren

[LJ RB30]

Well I finally bolted my Hilux diff into my LC on the weekend and apart from the offset being a bit wider its all good.

I am running a 3.9 open diff until my 4 spool LSD gets here on Friday. These things are near indestructable and as its only a 202 so it should give trouble free running. The benefits of the Hilux for me are strength and the cheap price and the no need to cut the housing and they are like the banjo and come out the front so easy to change ratios if I wanted to.

The brakes are from a 92 Hiace as is the diff head (Hiace and Hilux share the same), the handbrake turned out simple and I have modded the the Hiace cable and spliced it into the LC wires.

The stud pattern is now 6 cylinder commodore as I am about to change the front discs to HQ as I bought a front end already done a year or 2 ago for this conversion.

I threw on the 15" VL Calais mags on with 205x65x15 and the gearing is sweet for the road plus the Potenza 205x60x14 tyres are now on standard Commy rims which sit them about 5mm further in the guards than they used to. I will use these for drag racing.

Rare Spares in Christchurch used a jig to make sure all the mounts were exactly in the correct place and a local engineering shop modded the 6 stud axles to suit 5 stud commy pattern.

The driveshaft was handled by a local company and they added my Toyota uni to a new shaft and V8 Commodore Yoke for strength.

I am using the existing brakeline to the splitter on the diff and ran new brake lines from the holden splitter to to each wheel.

Only thing left is to balance the wheels and go racing in a week and a half hopefuly with my new 4 spool LSD or else I will have to run my spare 4.3LSD with the 15" wheels and see how it goes lol...

Hi mate,

You've done some bloody good times with your car, keep up the good work!

I'm looking at putting a Hilux diff in my LJ, what year or model did your housing come out of? How much difference in width was there?

Cheers

[wot179]

If you are near Ipswitch,this one finishes REAL soon

http://cgi.ebay.com....id=p3286.c0.m14

[warrenm]

The housing that your after comes from an RN-10/15/20/25 Hilux which are all pre 1979.The complete diff is 1357mm drum to drum.The RN-30 onwards is 1425mm which is too wide for the LC/LJ.

[kudu]

The housing that your after comes from an RN-10/15/20/25 Hilux which are all pre 1979.The complete diff is 1357mm drum to drum.The RN-30 onwards is 1425mm which is too wide for the LC/LJ.

So I wonder if that would make it about right for a LH?