Guys,

I currently have a 9 bolt with shot friction cones. I could spend $1000 rebuilding the limited slip, new bearings and seals, and changing to 3.73 gears. But I'd still be stuck with the modest 9 bolt limited slip. I would like to switch to a helical limited slip like the T2R for a higher bias ratio. That rules out the 9 bolt. I don't want to upgrade to a 12 bolt or 9" for weight reasons, and I can't seem to find a Dana 44. That leaves the 10 bolt.

Car is used for pleasure driving and track days, no drag racing. So I think the 10 bolt will live fine.

My major beef with the 10 bolt is the c-clip axles and problems that causes with pad knock back on fixed calipers. Obviously the 9 bolt has bolt in axles.

My question is, has anyone cut off the 10 bolt axle flanges and replaced with a flange from a bolt in axle differential like the 9 bolt, D44, 9"??? I would imagine this would require custom axles, but I don't see that as a big deal.

Thoughts???


P.S. I am not interested in anyone telling me to just get a 12 bolt/9". Technical discussion only please.

 

There is a bolt-in conversion kit made for the 10-bolts already if you wanna do that. IIRC, it runs about $150 at Summit/Jegs.

 

Strange Engineering
STR-A1032 at Summit $169.95

 

Says "designed for drag racing only". That isn't going to work for me.

 

For just a driver & road course, I don't see the need to eliminate the c-clips anyways.

 

See original post.

My major beef with the 10 bolt is the c-clip axles and problems that causes with pad knock back on fixed calipers. Obviously the 9 bolt has bolt in axles.

 

I read that the first time around. Sorry if I tried to help you the first time, but "pad knock" isn't exactly an issue to worry about since there are millions out there every day with no issues.

 

Really? I can't think of a single OEM car that uses c-clip axles and fixed calipers. Can you?

Look, I know you are trying to help, but it isn't working. I'm not interested in a discussion on why I shouldn't do it. Rather, I want a discussion on "how" to do it. Pad knock back is a known problem with c-clip axles, its really not worth debating.

 

so whats the difference in length between the 10 an d9 bolt? should be about the same since the wheels all fit the same way right? I dont see any reason why you could not cut the housing ends off a 9 bolt and have the welded to the 10 bolt axle. Obviously you will need this done professionally on a jig to make sure things are square, but i see no issue. If you can do that, you can eliminate the need for custom axles, since you can use 9 bolt ones.

as for stephen, pad knock back will be an issue with fixed calipers (they are not stock BTW). Driving down the street you may not notice much, but start tossing the car around aggressively and you will have problems.

actually, are 9 bolt 28 splines the same as the 10 bolt 28 splines? have to look into that

 

In the end? I'm sorry I even tried to help you eliminate the c-clips. That is ALL I LOOKED INTO FOR YOU. It is the only already existing type of option out there, short of custom work like swapping the axle ends out (not exactly a cheap solution). I told you what is out there. It is up to YOU to decide if it for you or not.

 

yes, but he asked the question
so........

as for the OP

suck it up and get a frod 9"

 

Something to consider, 9 bolt axles are two different lengths, 10 bolts are not.

 

Lol.

Yeah regarding the axles, I did not know the 10 bolt was also 28 spline. If anyone has a 10 bolt axle laying around, I can take some pictures of my 9 bolt splines and measure the axle lengths, maybe we can compare. If I can make this work with stock axles, this will be quite an inexpensive project.

Don also brings up a good point regarding the axle lengths.

Expect some pictures and measurements of my 9 bolt stuff tonight.

 

Took some measurements tonight. I would be very grateful if someone with some 10 bolt axles laying around could compare these numbers.

Passenger axle - 31 1/2" long
Driver axle - 28 7/8" long
Spline outer diameter - 1.2"

 

To be certain you have 28-spline 10-bolt axles, be sure the donor car is 90+. The 10-bolt axle is 30 5/16" long.

JamesC

 

Doh. So I probably can't use 9 bolt axles in a 10 bolt housing. I guess its possible to use two cut down passenger side axles, but not sure how much spline length I would need.

Thanks for the info.

 

Well I finally found a Dana 44 so this project is now officially canceled.

John

 

Lucky! I gave up and am in the process of dumping more money into a rear end i really dont want to keep longterm but am stuck with lol.

 

Keep your eyes open. I gave up as well and even bought new posi cones for my 9 bolt, then this Dana found me.

 

How many miles did your 9 bolt limited slip last?

 

My car has 69k on it. First 50k were babied. I noticed reduced performance about 2k ago. I think I toasted it at the track though. Friction style limited slips get real hot will all the slipping around corners. Hopefully the T2R will be much better.

 

That's too bad, since the 9 bolt has so many positives otherwise.

 

Yea i think thats probably par for the course for any cone type posi not just the 9 bolt. At least with the 9 bolt you can get new cones and rebuild it.

 

Which is probably a better option than ponying up the dough for a Harrop truetrac.

 

why does this not ever happen to me?

I still think the hybrid 9/10 bolt would be cool, but the dana is better

 

Really stupid question, But is there a Dana 44 that reasonably bolts into our cars?

 

There is a D44 that is a direct bolt in. But they are hard to find. Do a search on this site for more info.

 

Yuuup direct bolt in.