Ring and pinion help?

b82ta3 · 06-20-2007, 04:26 PM

Ok so I am putting some 4.88 gears in my 84 pickup, this is the pattern I have come up with on the rear and well on the drive side I think that the first and 4th tooth of the paint look pretty good, but the center 2 look a little bit different than the other ones. My question is, How does this look for a pattern? should it be set a bit deeper? The coast side picture almost looks too deep, but those center two on the drive side look a bit shallow? I dont know I'm kinda confusing my self I think so I'm just going to stop typing now. Haha oh btw I just put the stock shim back in as a starting point.

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MudHippy · 06-20-2007, 05:26 PM

You think you can do better than that, huh? How many tries did that take anyway?

If it were mine, I think I'd be plenty happy with those results. But, perhaps, the ever slightest bit deeper would be "perfect".

That shim might work fine. Looks maybe too thick, though. Yeah, on second thought try one the next size skinnier. Trying to move the contact patch back a bit towards the heel and deeper. Looks too much toward the the toe end. You know what I'm sayin' there?

Yeah, try the shim. Sorry I had to think that one through. It's been a little while since I fussed with my gears.

b82ta3 · 06-20-2007, 08:05 PM

alright i will do that here in the next couple days, any suggestions as to about how much shim to add?

MudHippy · 06-20-2007, 09:54 PM

Not thicker, skinnier, I wanna say like .002-.003 less than that one.

That will put the pattern deeper and towards the heel end. Not too much, I hope.

Where's ZUK(http://gearinstalls.com/)when we need him? He's got all the experience setting gears up. Could probably tell you exactly how much less shim you'd need.

Oh well, you'll have to settle for the advice of another novice for now. Sorry, I can't reassure you any more than that.

Good luck.

reggie 00 · 06-20-2007, 10:03 PM

Quote:

Originally Posted by MudHippy

Not thicker, skinnier, I wanna say like .002-.003 less.

That will put the pattern deeper and towards the heel end. Not too much, I hope.

Where's ZUK(http://gearinstalls.com/)when we need him? He's got all the experience setting gears up. Could probably tell you exactly how much less shim you'd need.

Oh well, you'll have to settle for the advice of another novice for now. Sorry, I can't reassure you any more than that.

Good luck.

That guy has some amazing write ups.

and for the record i think you are doing a good job helping out. (not that i know if your right) the best times working on cars have always been just banging heads with my buddies figuring it out.

big_blue_goat · 06-20-2007, 10:05 PM

That's good enough for the girls I go with. There's no reason to be unsatisfied with that. Drop two thouy out on the shims and your good to go.

MudHippy · 06-20-2007, 10:42 PM

I was partly wrong, did some more reading. Less shim will move the contact patch towards the heel end and shallower. Not DEEPER, oops. So, maybe that ain't the way to go.

Maybe that is about as good as your gonna get where it's at now. I hope so at this point. Then I can say, "see I knew it looked pretty good to begin with".

GSGALLANT · 06-21-2007, 04:05 AM

Good save, Mudhippy. I was about to correct your post above, but read on to see that you corrected it yourself.

Anyways, I wouldn't touch it. The pattern is excellent.

A few other points... Did you get your backlash in spec? Did you get some good preload on your carrier bearings (adjusters torqued to 125-150 ft lb)? Did you install a solid pinion collar or a new crush sleeve? Either way, did you set your pinion preload correctly? Other than that... I'd say your good to go.

b82ta3 · 07-02-2007, 08:17 PM

ok so all is set up and installed and i have been working at breaking them in. My question is, how hot should the differential be getting? I drive it for about 5 miles and it gets hot enough that when i hold my hand on it for a few seconds it feels pretty hot. I looked at the break in instructions on gearinstalls.com but i'm unsure as to how hot "Hot to the touch" so i was just wondering how hot i can go/should go to prevent damage to the gears. oh and i have about 70 ish miles on them as of now.

thanks
Adam

06-20-2007, 05:26 PM	#2 (permalink)
MudHippy Registered User Join Date: Jan 2007 Location: The Realm Of Fecal Cohesion Posts: 2,014	You think you can do better than that, huh? How many tries did that take anyway? If it were mine, I think I'd be plenty happy with those results. But, perhaps, the ever slightest bit deeper would be "perfect". That shim might work fine. Looks maybe too thick, though. Yeah, on second thought try one the next size skinnier. Trying to move the contact patch back a bit towards the heel and deeper. Looks too much toward the the toe end. You know what I'm sayin' there? Yeah, try the shim. Sorry I had to think that one through. It's been a little while since I fussed with my gears. __________________ Sonoran Steel Early IFS Truss Your IFS is SPINELESS without it SonoranSteel.com I'm Cuckoo For YOTA Trucks! Last edited by MudHippy; 06-20-2007 at 09:57 PM.

06-20-2007, 09:54 PM	#4 (permalink)
MudHippy Registered User Join Date: Jan 2007 Location: The Realm Of Fecal Cohesion Posts: 2,014	Not thicker, skinnier, I wanna say like .002-.003 less than that one. That will put the pattern deeper and towards the heel end. Not too much, I hope. Where's ZUK(http://gearinstalls.com/)when we need him? He's got all the experience setting gears up. Could probably tell you exactly how much less shim you'd need. Oh well, you'll have to settle for the advice of another novice for now. Sorry, I can't reassure you any more than that. Good luck. __________________ Sonoran Steel Early IFS Truss Your IFS is SPINELESS without it SonoranSteel.com I'm Cuckoo For YOTA Trucks! Last edited by MudHippy; 06-20-2007 at 10:00 PM.

06-20-2007, 10:05 PM	#6 (permalink)
big_blue_goat Registered User Join Date: Nov 2006 Location: Oregon Posts: 93	the girls I go with... That's good enough for the girls I go with. There's no reason to be unsatisfied with that. Drop two thouy out on the shims and your good to go.

06-20-2007, 10:42 PM	#7 (permalink)
MudHippy Registered User Join Date: Jan 2007 Location: The Realm Of Fecal Cohesion Posts: 2,014	I was partly wrong, did some more reading. Less shim will move the contact patch towards the heel end and shallower. Not DEEPER, oops. So, maybe that ain't the way to go. Maybe that is about as good as your gonna get where it's at now. I hope so at this point. Then I can say, "see I knew it looked pretty good to begin with". __________________ Sonoran Steel Early IFS Truss Your IFS is SPINELESS without it SonoranSteel.com I'm Cuckoo For YOTA Trucks! Last edited by MudHippy; 06-21-2007 at 12:24 PM.

06-21-2007, 04:05 AM	#8 (permalink)
GSGALLANT Registered User Join Date: Mar 2005 Location: New Brunswick, Canada Posts: 1,759	Good save, Mudhippy. I was about to correct your post above, but read on to see that you corrected it yourself. Anyways, I wouldn't touch it. The pattern is excellent. A few other points... Did you get your backlash in spec? Did you get some good preload on your carrier bearings (adjusters torqued to 125-150 ft lb)? Did you install a solid pinion collar or a new crush sleeve? Either way, did you set your pinion preload correctly? Other than that... I'd say your good to go. __________________ 2002 4Runner, Auto-A340F, 3.4L, 4.30 Gears TJM T15 Front Bumper & Warn M8000, 4xInnovation sliders, Sonoran Steel 1.2 Lift, Toytec LCA Skids, Tundra Brake Upgrade (231mm), Extended rear diff breather, Deckplate Mod, Andymod, Dual batt setup with Optima blue top aux battery, Hardwired 1000W inverter, Aux fuse box, Full time power to 12V plugs, Yaesu FT7800R Radio, "4-air" system for airing up/down tires. 2004 Camry LE - stock (and will stay that way) 1993 4Runner has been sold

06-20-2007, 08:05 PM	#3 (permalink)
b82ta3 Registered User Join Date: Jun 2006 Location: Lake Mills, Iowa or Ames, Iowa Posts: 81	alright i will do that here in the next couple days, any suggestions as to about how much shim to add?

07-02-2007, 08:17 PM	#9 (permalink)
b82ta3 Registered User Join Date: Jun 2006 Location: Lake Mills, Iowa or Ames, Iowa Posts: 81	update ok so all is set up and installed and i have been working at breaking them in. My question is, how hot should the differential be getting? I drive it for about 5 miles and it gets hot enough that when i hold my hand on it for a few seconds it feels pretty hot. I looked at the break in instructions on gearinstalls.com but i'm unsure as to how hot "Hot to the touch" so i was just wondering how hot i can go/should go to prevent damage to the gears. oh and i have about 70 ish miles on them as of now. thanks Adam __________________ 1984 Pickup. 4.88 gears, 33x12.5 inch SSR's chevy's out back, 3 inch Superlift springs up front, homemade tube box, and way too much other small stuff to bother listing.

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