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gear contact pattern yellow lead

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sbcBill

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Discussion starter · #1 ·
I am in the process of acquiring everything I need to change the rear axle ratio in my 12 bolt. I am having difficulty locating the gear compound used to check the gear contact pattern on the ring and pinion. Where can I purchase the yellow lead compound? If there is a readily available substitute what is it? Also, where can I get it? Oddly, I have been told that of all things that can be used as a substitute is mustard. I think the only thing in common is the color. If anyone can help me with this please let me know.
Thank you in advance,
Bill
 
#2 ·
A viable alternative is always 'White Lithium' grease - it can be found at most auto and hardware stores.
It works well, but you need to use an even coat and wipe it off between 'tries' to get the best pattern read.

You can of course order Marking Compound from Summit and most other on-line suppliers - http://www.summitracing.com/parts/SUM-730000/

Next would be you local GM dealer - the guys in the shop still need it ;)
It is GM #1052351 for the smaller tube (still a lifetime supply for most).
Cost is @$8~10 depending on dealer.

You can probably also find it locally at a 'truck' supply shop near you.
Find a place that sells HD truck parts and speak to the counter guys - they will usually have it for differential and trans repairs.
 
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Discussion starter · #3 ·
My local auto parts guy looked at me with that "DUH" look, he did not have a clue what I was even talking about. I never thought of the Chevy dealer, that is a great suggestion. There is also a trans shop in my town, maybe they also do rear axle work. I will have to look there as well.
Bill
 
#4 ·
sbcBill said:
Oddly, I have been told that of all things that can be used as a substitute is mustard. I think the only thing in common is the color.
Click to expand...
Never heard that one. I don't think it will work. ;)
 
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#5 ·
If you are getting a good installation kit then the marking compound will be in the kit. I've got a box full of it if you can't find it anywhere else. Where are you getting the parts? I can recommend a few good places if you need suggestions.
 
#6 ·
sbcBill said:
My local auto parts guy looked at me with that "DUH" look ...
Bill
Click to expand...
Gotta love that 'Look' l:)
Actually had one counter guy at a local 'O-Really' store ask me if I 'ever work on anything "normal" that he would know about' when I asked - I smiled and said 'Nope' :p

Of course that's the reason I almost always look-up any thing I need so I already have the part number, alternatives and pricing b-e-f-o-r-e I even walk in to a place.
Once in a while it's not possible to do this, and those are almost always the most :confused: visits ...
I love doing business with NAPA if possible - but the local store has really picked-up some iffy guys in the last year or so.
One was introduced as a "Racer", 'so he will be able to help me with my performance questions' - well ... turns out little Speed-Racer doesn't actually build anything ... he buys/bought a 'claimer' engine from a local rebuilder and "his friends dad" does his 'tuning' (which it turns out was installing the carb and setting timing, when the engine was installed) ... they did have to replace a water pump a few weeks back in the pits ... 'so he has that going for him' (with apologies to Bill Murry ;) ) - other than that, he basically steers ... so he a driver! ...

big gear head said:
If you are getting a good installation kit then the marking compound will be in the kit. ...
Click to expand...
It sure should ...
 
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#7 ·
Engineers supply
ink like liquid call 'engineers blue'
used for alsorts of stuff including above type applications and for marking out steel for cutting
 
#9 ·
Here's one for all of you parts house lovers...... I went into my local Autozone and asked for set of front brake pads for my Chrysler Sebring convertible years ago. The young lady behind the parts counter asked me if it was a 2-door or a 4-door. I just smiled and said I would go somewhere else. As for the gear marking compound.....I have always wondered if I could just mix litharge (yellow lead oxide) and petroleum jelly. We used to use a mixture of litharge and glycerin for sealing threaded fittings on liquid and gas chlorine lines at the water treatment plant. I think the glycerin would make it too runny but, the petroleum jelly should make it just about right. Any thoughts?
 
#11 ·
Phantastic said:
Here's one for all of you parts house lovers...... I went into my local Autozone and asked for set of front brake pads for my Chrysler Sebring convertible years ago. The young lady behind the parts counter asked me if it was a 2-door or a 4-door. I just smiled and said I would go somewhere else. As for the gear marking compound.....I have always wondered if I could just mix litharge (yellow lead oxide) and petroleum jelly. We used to use a mixture of litharge and glycerin for sealing threaded fittings on liquid and gas chlorine lines at the water treatment plant. I think the glycerin would make it too runny but, the petroleum jelly should make it just about right. Any thoughts?
Click to expand...
SoCal805 said:
Summit, JEGS....and of course Amazon

amazon.com/ACDelco-10-5055-Gear-Marking-Compound/dp/B007Q10TES/ref=sr_1_1?crid=3BO1ICDP9ZFYN&keywords=differential+gear+yellow+marking+compound&qid=1697998606&sprefix=differential+gear+yellow+marking+compound%2Caps%2C149&sr=8-1
Click to expand...
I really hope he has it done by now... 2012 post 😉
 
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