ring and pinion contact pattern
ring and pinion contact pattern
To anyone thats good at interpreting gear contact patterns.
Need an opinion on my contact pattern before i button it up. Finally got all the specs right (26inlbs total preload, .004in backlash). How does the pattern look to you guys?
Looks pretty good! Did you mess with the pinion depth? If not, it's almost always safe to assume Nissan got it right from the factory and you only need to set the tension and backlash. Your settings are good. What size shims did you end up using, and is that a Torsen?
Here's a little tip if you're making a sealant gasket. Take two long bolts and cut the heads off. Then, screw them in on opposite sides finger tight. When you slide the cover down the bolts, they will keep it perfectly aligned for you to put the other bolts in and you won't smear sealant everywhere!
Here's a little tip if you're making a sealant gasket. Take two long bolts and cut the heads off. Then, screw them in on opposite sides finger tight. When you slide the cover down the bolts, they will keep it perfectly aligned for you to put the other bolts in and you won't smear sealant everywhere!
Last edited by Lawn Dart; Mar 10, 2013 at 01:38 AM.
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Joined: Feb 2003
Posts: 841
Likes: 9
From: indiana
+1
I would run it like that. Pretty good pattern
BTW, did you put any load on the axles to get that pattern? I noticed that your drive and coast side one favors the heel and one favors toe direction. From my memory, that may move a little depending on how you spun the gears around loaded or unloaded to get the pattern. I'd be surprised if you did not load them up though because your pattern is pretty distinct.
Either way I'd say it looks good. Every rear end is going to look a little different and your pattern is well within acceptable. May not even get it better.
Here's what mine looked like...
http://imageshack.us/photo/my-images/195/coaste.jpg/
http://imageshack.us/photo/my-images/812/drivea.jpg/
Make sure you get the gears cleaned up good and check torque on everything. Good luck with the rest of it!
I would run it like that. Pretty good pattern
BTW, did you put any load on the axles to get that pattern? I noticed that your drive and coast side one favors the heel and one favors toe direction. From my memory, that may move a little depending on how you spun the gears around loaded or unloaded to get the pattern. I'd be surprised if you did not load them up though because your pattern is pretty distinct.
Either way I'd say it looks good. Every rear end is going to look a little different and your pattern is well within acceptable. May not even get it better.
Here's what mine looked like...
http://imageshack.us/photo/my-images/195/coaste.jpg/
http://imageshack.us/photo/my-images/812/drivea.jpg/
Make sure you get the gears cleaned up good and check torque on everything. Good luck with the rest of it!
Update on this. I put it in with this pattern. Unfortunately the gears whine. The quaife is an amazing mod though so I'm happy with it. I got a bunch of opinions and it seems with old gears you never get it perfect but consensus is its safe to drive on so I'm just going to live with it.
also I tried to load the pinion flange as best as I could with a buddy resisting me turning the gears when i got that pattern.
also I tried to load the pinion flange as best as I could with a buddy resisting me turning the gears when i got that pattern.
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