North East F-Body Association - Got a bad set of gears :(

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SLP IROC-Z

10-15-2013 04:47 PM

Got a bad set of gears :(

Makes me want to blow my brains out, cant stand noises like this!!

Slowhawk

10-15-2013 05:01 PM

Kind of sounds like a pinion bearing but can't tell because your at one speed.

ZFreie

10-15-2013 05:06 PM

Gotta wait till i get home to hear what it sounds like lol

SLP IROC-Z

10-15-2013 05:20 PM

4 Attachment(s)

Quote:

Originally Posted by Slowhawk (Post 83676)

Kind of sounds like a pinion bearing but can't tell because your at one speed.

im going to pull it out and check it all. new bearings/races i set the pinion preload to 25 in/lbs with a solid spacer, we'll see. the pattern did not look good to me when i set them up no matter what i did. ended up setting the pinion depth to what was stamped on the gear. i sent pics to motive and they said looks good run it.

Slowhawk

10-15-2013 07:00 PM

I never/ever go by pattern. Got screwed a few times doing that and they sound just like yours.

We just set depth and backlash. Works out pretty good.

SLP IROC-Z

10-15-2013 07:21 PM

Yeah its so much easier doing it by pinion depth, no guess work. I did it that way and checked the pattern because the guy at motive gear wanted to see it.

Formula413

10-15-2013 08:51 PM

Your car sounds like a spaceship!

Z28	10-15-2013 09:11 PM

http://m.youtube.com/watch?v=UplJBQi_0_w

Slowhawk

10-15-2013 11:16 PM

Quote:

Originally Posted by SLP IROC-Z (Post 83689)

Yeah its so much easier doing it by pinion depth, no guess work. I did it that way and checked the pattern because the guy at motive gear wanted to see it.

While you were putting in gears you already talked to motive?

ZFreie

10-16-2013 12:11 AM

Quote:

Originally Posted by Formula413 (Post 83692)

Your car sounds like a spaceship!

I would have pulled over and lit my car on fire, thats awful

SLP IROC-Z

10-16-2013 12:30 AM

Quote:

Originally Posted by Slowhawk (Post 83700)

While you were putting in gears you already talked to motive?

yes to cover my ass, they asked for pics of the pattern which i gladly gave them, they said looks good run it. I had a feeling these gears were going to give me an issue thats why i originally contacted them.

KLAB	10-16-2013 01:46 AM

Sounds like it has an M22 rock crusher.

Leave it... :klab:

smokinss

10-17-2013 10:45 AM

Crazy part is I had the same thing happen to me with a set of motive gears for my 10 bolt about 5yrs ago. Had my buddies shop do the install. Sounded good for about a week and then it sounded like yours. They said that the solid pinion spacers are no good because they don't hold pre load and can back off. Not sure if its true or not.

DAWG	10-17-2013 12:59 PM

a lot goes in to putting gears in the diff.
youll need to set the proper pinion depth and add shims etc.check and recheck with a dial indicator and depth mic.
look here for the proper way to do it
http://www.differentials.com/technic...n-instructions

SLP IROC-Z

10-17-2013 03:25 PM

I appreciate the advice but its not my first gear install.

KLAB	10-17-2013 04:10 PM

Quote:

Originally Posted by SLP IROC-Z (Post 83681)

... new bearings/races i set the pinion preload to 25 in/lbs with a solid spacer, we'll see. the pattern did not look good to me when i set them up no matter what i did. ended up setting the pinion depth to what was stamped on the gear. i sent pics to motive and they said looks good run it.

...Yeah its so much easier doing it by pinion depth, no guess work. I did it that way and checked the pattern because the guy at motive gear wanted to see it.

Quote:

Originally Posted by DAWG (Post 83744)

a lot goes in to putting gears in the diff.
youll need to set the proper pinion depth

lol

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