Thread: Diff pegging in NSW

Originally Posted by up2nogood

As per:

www.ashcrofttransmissions.co.uk/part_47.html

Looking to get it done and couldn't be shagged doing it myself. Anyone recommend a diff repair shop in NSW capable of doing this properly?

You could try Awards at Rydalmere:
02 9638 0822

That's where the t-case is going for some love, but I'm not sure if Tony does pegging as well. Shoulda mentioned I was going to call them!

Any others?

Originally Posted by up2nogood

That's where the t-case is going for some love, but I'm not sure if Tony does pegging as well. Shoulda mentioned I was going to call them!

Any others?

He'll probably say no if you call him Tony !!

(it's Terry )

Oops!

Was thinking about something else as I typed........

Kraft Differentials at Parramatta are big in Super Modifieds, and many years ago fitted my Detroit Locker well.
So they should know what you are talking about.
Regards Philip A

I know a number of guys on UK forums that have done the job at home with a drill and a set of taps.
They used a phosphrus bronze or brass tip braized to the bolts. The job itself is not difficult to do....it's knowing the exact place to locate the two bolts.
I would think that anywhere against the crown wheel/ring gear would be ok..possibly opposite the pinion?

One of our racer mates did it on hid P38 Diffs in his Desert Warrier raid car. The time consuming bit is taking the axle out and stripping it down prior to doing the engineering.
I don't think it would be wise doing this mod with the diffs still in place.

Regards.

S.

I took a look at the Ashcoft site, but I don't quite get what diff-pegging is about. I can see that it stops flexing, but I can't see how the 2 bolts hold things to stop this. Anyone got a better explanation or photo than the ashcroft site?
Thanks
David

My understanding is that the crown wheel tries to ride up the pinion teeth when big power is applied in high traction.
Ie It tries to move away from the pinion.
The bolts/plate just stop it moving away. Ones I have seen have 2 bolts holding a metal pad which becomes a rubbing surface for the back of the crown wheel when it tries to move .
Simple idea, but seems to me to be only half the problem. What about the pinion moving. Many diffs have a bearing on the end to stop the pinion moving.
regards Philip A