www.RX7fb.com

You have a point Nik, you couldnt make one for that much money.
But then Ive bought good cars for that money

it's all relative...
I paid a grand for a diff for the Jag but then, that's a top end motor with top end maintenance and running costs. 1st gens are worth sod all basically, and I'd bet that if we took an average value of them in the Uk it wouldn't be more than £1500 so to pay that much for a diff seems disproportionately high. Most of them also struggle to put out more than 130bhp as well so how much benefit an lsd would be in a Uk roadgoing 1st gen is debateable IMO.

As the fb get older the parts will become harder to find and most likely become more expensive. This is why we got torsen made to suit gen1 rx7 either 24 or 26 spline axles. They aren't super cheap ($1450aus) but you will only have to buy it once as it will never need the be serviced.

Cheers.

schoots jr wrote:As the fb get older the parts will become harder to find and most likely become more expensive. This is why we got torsen made to suit gen1 rx7 either 24 or 26 spline axles. They aren't super cheap ($1450aus) but you will only have to buy it once as it will never need the be serviced.

Cheers.

And that's exactly my point. Much rather buy a new Torsen than that at that price. Condition unknown!
I've sold LSDs for £350 but that's a complete unit with CWP in a casing.

£220 for that, no way. I'd have given it a look for £100.

24 and 26 spline LSDs available here.

I bought one off him a couple of years back and the price was much better. These are almost getting out of reach now.

http://www.trademe.co.nz/a.asp?id=57385 ... 24&ct=link

kiwimazda wrote:KIA sportage cwp is about 4.7 ratio. Some come with LSD. They bolt straight into s3. You can find at wreckers for about £100

So this unit bolts up to s3's?

http://www.ebay.co.uk/itm/321081574929? ... 1423.l2649

What about old school rx's non rx7?

Wow ok - if if fits S3, then it wont fit S2 or earlier RX's.

Axles splines are different.

I'm probably going to roll the old b1600 or hilux diff in nz when I get around to it.....always keen on a cheaper option....

To fit rx2 diff

Internet says its only the front diff/non lsd that fits - but the R&P swaps into the S3 LSD nugget.

4.77 is some crazy high gears anyway though - would be sweet on a 12a bridgey or 13bPP to keep it in the power band though!

The Mazda truck diffs at 4.4 ish a probably a better bet in the real world though.

quoted from elwood on rx7club
"Here are some of the advantages of the Toyota 8" rear end, some of which were already covered in the Ford 8.8 thread:

- Available off Toyota trucks in junk yards for a good price
- Reasonable selection of gear ratios
- Good selection of differentials (Toyota Supra parts can be adapted)
- 3rd member design uses adjuster collars (similar to a Ford 9"), which are easy to work with
- The axle assembly is similar to the RX-7, upsized 1"
- The axles are made from 4130 steel, which is arguably the best material available for the application, bar none
- The Wheel Mounting Surface (WMS) to WMS is 58.0", which is 1/2" narrower than my OEM GSL-SE rear axle; OEM Toyota 8 housing width is OK
- The thing is built like a brick shithouse:
-- The fill and drain plugs use hex plugs with crush washers for good sealing
-- The drain plug has a protective ring welded around it
-- The axle tubes have full height gear oil dams welded into their inboard ends to prevent oil slosh
-- The axle retainers are cast iron, with 4 M8 attach bolts
- Good reputation for strength and reliability in the RX-7 and Toyota 4X4 communities
- Lots of aftermarket support due to its popularity in the 4X4 world ".....is easier than an 8.8 and just as strong if not more so