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Ring and Pinion pattern (round two)
#2174851
10/14/16 09:11 PM
10/14/16 09:11 PM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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On my 8.25 pinion I went from a .031 shim pack to .028, both with .008 backlash. Am I going in the wrong direction?
Trying to get this buttoned up this weekend.
Thanks!
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: gdonovan]
#2175143
10/15/16 10:17 AM
10/15/16 10:17 AM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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Had an hour to kill before heading to the post office this morning, tried a big move to a .020 shim to see what the pattern does.
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: gdonovan]
#2175144
10/15/16 10:19 AM
10/15/16 10:19 AM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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Watching the pattern moving about and I wrong thinking around a .024 would be spot on?
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: skicker]
#2176354
10/16/16 08:05 PM
10/16/16 08:05 PM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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Looking at the movement on both patterns between the 31-28 and then 20 I think I would try the 24...  Ended up with .026 tonight, had a hard time getting a good picture.
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: gdonovan]
#2177027
10/17/16 03:38 PM
10/17/16 03:38 PM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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Already on the loose side at .008
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: gdonovan]
#2177355
10/17/16 10:33 PM
10/17/16 10:33 PM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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Cleaned everything well and assembled with crush sleeve, again backlash at .008 Ran car on the lift for several minutes, no noise noted. Went out on a road test, gear whine at very light throttle 50-65 mph and then seems to go away at that point. Silent below, silent above. Very slight whine on decel from highway speeds. Youtube video of noise, had a camera on the back seat. Ignore the electric fuel pump buzz. https://youtu.be/mvQuNokQ6L4Anything I can adjust or am I screwed? Diff was a little warm after 15 minute road test, about 230-250F I'm guessing by feel. Pattern was approved by vendor. I'm ready to set car on fire.
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: gdonovan]
#2177441
10/18/16 12:15 AM
10/18/16 12:15 AM
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Joined: Jan 2003
Posts: 15,672
Norwich CT USA
moparts
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Some gears do whine a little.
Can not tell much from your audio
Tom ,
2011 Ram 3500 C&C Diesel
2009 Challenger R/T
1971 Challenger Conv. 511/4 speed
1970 Challenger R/T 503/727
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Re: Ring and Pinion pattern (round two)
[Re: moparts]
#2177514
10/18/16 05:41 AM
10/18/16 05:41 AM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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Some gears do whine a little.
Can not tell much from your audio I'll try and do a better one tonight, its loud though when its in "the zone" louder than it should be.
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: gdonovan]
#2177773
10/18/16 03:27 PM
10/18/16 03:27 PM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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Vendor told me to drive it 500 miles and then change the break in oil.
Never heard of a gearset getting quite over time.
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: crash520]
#2178401
10/19/16 05:50 AM
10/19/16 05:50 AM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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What brand gears? I installed blue box Motive, load as all get out, am going to get a set of OEM Spicer gears to hopefully make it better Motive Gear C8.25-373
"I think its got a hemi"
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Re: Ring and Pinion pattern (round two)
[Re: dvw]
#2178402
10/19/16 05:53 AM
10/19/16 05:53 AM
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Joined: Jun 2008
Posts: 10,958
Oakdale CT
gdonovan
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Pattern looked pretty good. With this gear set my bet is this is as good as it gets.
Doug Not acceptable. I'll try moving the backlash out a touch and see if there is any improvement but if this is "as good as it gets" with this brand... I'll have future plans to replace them with a different brand and take the loss.
"I think its got a hemi"
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