lsd

[rsp57]

Hi Guys, i'm new to your site (and what a great site it is)and am wondering where i can get a Quaife or plate lsd with out having to sell my kidneys. i know abbott racing do the quaife but after the local agent has added his cut and government charges it's bloody expensive. living in oz has it's draw backs when you want saab rally parts.

[max]

Abbot's stuff is worth more than it's weight in gold for some reason. Never saw any value in their stuff. Then again, there isn't much value in Saabs anyway, unless you're considering their resale prices. :lol:

Luke has a plate-type LSD he imported from Sweden, and I'm pretty sure it was pretty reasonable. He says it was the best mod he's put on the car to date. He can tell you where he got it from, I can't remember.

[Luke]

Unfortunatly the diff I have is definatly not reasonable. After shipping and import taxes it was approaching $2000 usd. That said, it makes an unbelievable difference in the handling of the car, especially on gravel. I got it through Jorgen Erickson in sweden and it is similar to the original saab ZF unit but with some improvments. Before I got this diff I was using a phantom grip which seemed to help a little, but it wasnt really that noticable. Some other people have been usuing a unit similar to the phantom grip thats made by a company in finland called turbocomp. I havent driven in a car with this unit but I imagine its performance would be similar to the phantom grip. http://www.ultraviresmotorsports.com/uv ... mance.html.

[max]

OK so I lied, it wasn't reasonable. But that doesn't mean it isn't good anyways. :lol:

[rsp57]

Thanks for the help. I have seen the one vince is selling but after talking to our local guru he dosen't think it would be suitable for gravel. The jurgens is a great unit but with the exchange rate of the oz dollar it would make a huge hole in the budget.

[t16_rally]

about lsd´s, there are three lsd´s manufactured to the og saab.
salisbury, zf, and sellholm(the one that jorgen sells) and the rating on these are in the same order, with jorgens has the best performance, and the other right behind. but if you get hold of a zf or salisbury, they are about half the price.

in early fords, there was a salisbury lsd. and the internals ( the driveshaftgears where resplined) is the same in saab.
if someone can get nice prices on new internalparts, i might get new fabricated lsd housings.

and a real lsd is way much better than a phantom or like so. its not even on the same planet if you race gravel!

/ Matti

[Geoff]

which differential was the one that SAAB was selling back in the 1970s? I thought it was the ZF differential. A while back one of the 99 rally drivers here in the US was trying to get new differential cases built for the ZF diffs so new ZF parts could be put into them. It never ended up happening.

What is the difference between the ZF and the Salisbury? Do you know who sold them and when? They're very difficult to find in the US!

Do you know which early Fords have the same driveshaft spline for the Salisbury lsd? I thought I heard that the first V4 LSDs were modified Ford Salisbury lsds and the SAAB Sport and Rally lsd was a copy of the Salisbury lsd made by ZF?

[t16_rally]

which differential was the one that SAAB was selling back in the 1970s? I thought it was the ZF differential. A while back one of the 99 rally drivers here in the US was trying to get new differential cases built for the ZF diffs so new ZF parts could be put into them. It never ended up happening.
- saab sold both salisbury and zf

What is the difference between the ZF and the Salisbury? Do you know who sold them and when? They're very difficult to find in the US!
the zf is a bit bigger then salisbury inside, and they are a bit hard to find here too. saab sold them

Do you know which early Fords have the same driveshaft spline for the Salisbury lsd? I thought I heard that the first V4 LSDs were modified Ford Salisbury lsds and the SAAB Sport and Rally lsd was a copy of the Salisbury lsd made by ZF?
some ford escort had it, but it might have been pure rally for them too, i dont really know.no other car has the samedriveshaft spline, saab resplined ford´s and made their own gears in the end!

/ Matti

[Crazyswede]

Ok, so I came across a guy near my house back in vt who can make gears. I am thinking that if I can pull the internals out of a friends old S&R box we may be able to reproduce them for a bit less then they are offered through speedparts.

This may also be something we can apply to LSD internals.

[theoneGroo]

hmm i have gerry sweet's old s&r gearbox sitting on a shelf, plus a second set of gears (no ring and pinion) sitting in a box... what should i do with that? ti would be nice to find some replacement parts someday.. might make it worth building a new car...

[Jordan]

I'm pretty sure we will take donations for the benifit of greater saab kind.

P.S. Welcome to the forum.

edit: Wait , you're in Bloomfield CT?

[theoneGroo]

ummm yes I am in bloomfield and all that... cars too. i'd be willing to loan out the parts for copy and all that if seth is interested as my car project is idle for the moment..... someonme should let me know....

[Geoff]

Groo!
I've been talking with Seth about this project and have been thinking about the possibility for a long time (we just needed to find the right shop and the standard parts to do it!).

If you'd let us, he or I would be willing to bring the gears to the shop in VT and have them give us a quote on what it would cost to reproduce whole sets. Or we could get individual pricing on gear sets and ring and pinions.

The shop, we're told by someone we know who had them build a gear, does nice work and is very knowledgeable (as in, without drawings or prior knowledge of the machine a gear was being built for, "The standard gear you gave me was off by ten thousandths so I built the new one to a tighter tollerance which will eliminate the wear problem you had"). We would have to determine what to do about hardening of the gears. Seth can get one of the guys in the lab where he works to run a non-destructive hardness tests on the S&R gears and we can request that the gears be built to the proper hardness. Generally parts like gears would be built from steel and then sent for hardening. Hardening changes the properties and also changes the size, usually shrinking the parts a small amount. I'm sure the gear shop would know how to build the parts to the right size before hardening so that they would be properly sized after the hardening process. But we could have them run dimensional testing after hardening, which they'd probably want to do anyway.

We could also look at building our own LSDs this way too.

[Luke]

I like where this thread is going! I can talk to the guys where John works about the head treating. They send parts out all the time to get heat treated. Last time I was in there they were machining a camshaft out of solid billet and then it was going out to get heat treated.

[Geoff]

Nice! I figure the gear manufacturer would probably know who to use for it since they probably send gears out to get hardened. I know of a few places in MA that do different kinds of heat treating. I can also ask one of our mold manufacturers who they use locally.