Thread: What dye for setting up diff tooth pattern?

I had the same problem with Engineers Micrometer Blue, struggled to see the contact area.

There's a nice yellow alternative sold in the US but getting very expensive.

A couple of suggestions I found are zinc oxide cream, yellow oil based paint & white lithium grease. I haven't tried them but you need something oily that will wipe off the contact area.


Colin

I use Holts Bearing Blue (Prussian Blue) also Permatex makes Prussian Blue either one works for me.


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As mentioned, I've found bearing blue to be unsatisfactory for this purpose. Might be worth trying some normal zinc cream.

AFAIR , I think I used yellow crayon and it was OK.

Regards PhilipA

general information .....the tooth contact area is known as "the wedge"

See if you can find this

https://departments.weber.edu/automo...rpretation.pdf

It mentions gear marking compound I found this


ACDelco 10-5055 Gear Marking Compound - 1 oz : Amazon.com.au: Automotive

Originally Posted by Gippslander

I found this


ACDelco 10-5055 Gear Marking Compound - 1 oz : Amazon.com.au: Automotive

That's the really expensive stuff from the US.
Tried tracking down the part number and only found it overseas.

Colin

Yes seems very difficult to come by those products; Amazon lists the AC Delco stuff as 'professional use only, not for retail sale'; sounds like it's probably no less toxic than the old red lead. I saw a youtube vid where a bloke uses some zinc cream and it appears to have the desirable thickness and visibility so I will start there. Will post the results. Might be a few weeks though. I've just ordered a torsen diff for the Jag as a present to myself, the installation might take a while to get to the top of my priority list.