How to recognize a "thick" ring?
12-05-2005, 07:07 PM
#1
How to recognize a "thick" ring? I just received a new ring and pinion set.
The brand should be Yukon but looking at the design it looks more like a Richmond.
However...
It should be a 3.42 set for a series 2 carrier = thick ring.
The set wasn't in the original box and there is no part numbers.
Is there a way to be sure it's a thick ring?
The ratio is OK (12 x 41 teethes).
The distance between the flat surface of the ring and the outer edge of the teethes is 31 mm or 1.22 inches. Does it help?
Do you still have your stock 3.42 series 3 gears? Could you please post a pic of the ring? maybe it helps...
Thanks!
The brand should be Yukon but looking at the design it looks more like a Richmond.
However...
It should be a 3.42 set for a series 2 carrier = thick ring.
The set wasn't in the original box and there is no part numbers.
Is there a way to be sure it's a thick ring?
The ratio is OK (12 x 41 teethes).
The distance between the flat surface of the ring and the outer edge of the teethes is 31 mm or 1.22 inches. Does it help?
Do you still have your stock 3.42 series 3 gears? Could you please post a pic of the ring? maybe it helps...
Thanks!
Last edited by tici; 12-06-2005 at 05:24 AM.
12-05-2005, 11:05 PM
#2
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Different manufactures have different markings. US Strange and Richmond are the most commin companies making them. Richmond gears will have a 80-****-1 number on the ring gear, you can call them with that number and they will give you the descripition. US Strange will have a 01-875342X stamped on the ring gear if it has the X on the back of the part number then it's a thick ring.
12-06-2005, 01:32 PM
#6
Thank you guys! 
Last night I was sitting in my office looking at this thing... no numbers... just a black piece of metal.
Sure I trust the vendor, but you know how it is: open up the pumpkin, take everything apart, install the bearings... and... screwed!
Is there something particular to know about those gears?
On the ring it says BL 008. This is the backlash used during the manufacturing (0.008")
Now, the old 5 cut style requests 6-10 /1'000" backlash, the new 2 cut style only 3-6 / 1'000".
Is this a 5 cut gear?
I know the optimal pattern is different between the two styles, also the strategy to adjust the gears.
Any Idea?
Thanks!
Last night I was sitting in my office looking at this thing... no numbers... just a black piece of metal.
Sure I trust the vendor, but you know how it is: open up the pumpkin, take everything apart, install the bearings... and... screwed!
The gears you bought are called the PTP line
On the ring it says BL 008. This is the backlash used during the manufacturing (0.008")
Now, the old 5 cut style requests 6-10 /1'000" backlash, the new 2 cut style only 3-6 / 1'000".
Is this a 5 cut gear?
I know the optimal pattern is different between the two styles, also the strategy to adjust the gears.
Any Idea?
Thanks!
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12-07-2005, 04:59 AM
#8
Originally Posted by 86irocz
Just stick to the .008 setting. I have never set up anything tighter besides a drag race only axle. What pinion shim did you end up using?
On the pinion it says CD 2.321 does it help to determinate the pinion shim?
I was thinking to start with the original shim, then adjust backlash, then check the contact pattern and adjust the pinion depth.
12-07-2005, 01:22 PM
#9
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Thats the best way to start. The pinion depth setting needs a special tool to figure the distance from the center of the differential bore to the head of the pinion. Pay extra attention to the drive side, I have seen some afermarket gears set up with less pinion shim than stock shims. .028-.026 instead of the usual .034-.038. If you can take some pics of the pattern and I'll try to help you out.
