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03-28-2024, 08:42 PM | #1 |
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Gear pattern gurus…take a look
Eaton Tru Trac, Motive gears 4.10’s in a 67 C10 housing.
Pinion depth set with T&D Machine pinion gauge. Pinion head called for 2.751, and 3 different areas of the pinion read 2.750. Backlash set at exactly .0085 Motive calls for .007-.009 spec. The yellow compound was maybe a tad thick, so that may be giving me a bit of and issue as far as pattern, but I did hook a drill to the pinion nut and ran it around 1,000 rpms to get the pattern. Any thoughts? Last edited by SilverGT3RS; 03-29-2024 at 10:52 AM. |
03-29-2024, 11:36 AM | #2 |
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Re: Gear pattern gurus…take a look
Drive side is a tad too deep, but it's within specs and looks good, so I'd run with it. Preloads all set when running pattern? Running the pattern with an electric drill is ....well... questionable. Repaint the gear and run it by hand with pressure on the ring gear as well as the pinion. I'm suspecting not much will change though
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03-29-2024, 11:41 AM | #3 |
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Re: Gear pattern gurus…take a look
i saw this last night and also thought a tad deep on drive...
coast side looks great.. mix a little oil with your compound and itll do alot better im with KW, while not "perfect", itll probably run fine
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
03-29-2024, 06:14 PM | #4 | |
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Re: Gear pattern gurus…take a look
Quote:
I can re-mark and re-run by hand but like you said I don’t see much changing. Yes, preload set at 24 inch pounds rolling torque. So, a tad deep meaning it needs a bit less shim? What are you thinking, .003-.004? This isn’t an everyday driver, so I’m probably only looking at 1200 miles per year on the drive train. It’s very very smooth when spinning with a drill, although that may not mean anything. |
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03-29-2024, 06:18 PM | #5 |
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Re: Gear pattern gurus…take a look
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03-30-2024, 12:46 PM | #6 |
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Re: Gear pattern gurus…take a look
Yep, that's if you want to go through the trouble I'd pull 003 out of it. Personally I'd run with it as is. FWIW, I've been setting up diffs for over 40 years and never heard of spinning it with a drill. Frigg'n u toob
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03-30-2024, 02:42 PM | #7 |
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Re: Gear pattern gurus…take a look
Frigg'n u toob
hahahaha..how true
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
03-30-2024, 09:37 PM | #8 |
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Re: Gear pattern gurus…take a look
I think I’m going to run as is for now. I appreciate you guys looking at it.
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