Pro gear users please step in

Run to Rund · 08-18-2008, 11:52 AM

I am running 4.86 pro gears in a 9" and they are quiet. Yours should be too. Did you blast the wear surfaces of the teeth (I hope not)? Since on setup you can't get a real load on the teeth, the pattern on the drive side should be toward the toe but not run off the end of the ring gear teeth.

40Coupe · 08-18-2008, 06:47 PM

I talked to tech at Richmond today and they said button it up and run it. Everything I described is normal. He said 12-bolt gears especially will make some noise on coast. The teeth apparently "lay over" slightly after the first pass and create some coast side interference.

Yes, I used a very fine abrasive in my blast cabinet to remove the coating. I was told that the black coating would quickly wear off and becomes an abrasive inside the housing.

67ss · 08-19-2008, 01:59 PM

I think you are ok. Richmond told me the same thing a while back, but my gears had started getting noticeably louder. Ended up pulling them and found all teeth on pinion to be cracked. But this was after about 4-5 years of service. They just started getting louder this season. Richmond said you will find something when you pull them and I did. They said the new set may develop a slight noise after a few passes but not get any louder. Just as they said the new set developed a slight noise after the first few passes but that is all. I will know now once the noise changes and starts getting louder what is going on.

KingReptile · 08-20-2008, 09:39 PM

40 Coupe that black surface you blasted off that gear was a phospate coating which helps with initial break in .

40Coupe · 08-20-2008, 10:16 PM

Quote:

Originally Posted by KingReptile

40 Coupe that black surface you blasted off that gear was a phospate coating which helps with initial break in .

Interesting.

http://classracer.com/classforum/sho...highlight=prep

08-18-2008, 11:52 AM	#1
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 586 Likes: 9 Liked 56 Times in 29 Posts	Re: Pro gear users please step in I am running 4.86 pro gears in a 9" and they are quiet. Yours should be too. Did you blast the wear surfaces of the teeth (I hope not)? Since on setup you can't get a real load on the teeth, the pattern on the drive side should be toward the toe but not run off the end of the ring gear teeth.

08-18-2008, 06:47 PM	#2
40Coupe Junior Member Join Date: Mar 2007 Posts: 91 Likes: 0 Liked 0 Times in 0 Posts	Re: Pro gear users please step in I talked to tech at Richmond today and they said button it up and run it. Everything I described is normal. He said 12-bolt gears especially will make some noise on coast. The teeth apparently "lay over" slightly after the first pass and create some coast side interference. Yes, I used a very fine abrasive in my blast cabinet to remove the coating. I was told that the black coating would quickly wear off and becomes an abrasive inside the housing. __________________ '67 Camaro 1.25 5.77 @ 118

08-19-2008, 01:59 PM	#3
67ss Junior Member Join Date: Jan 2008 Posts: 29 Likes: 0 Liked 0 Times in 0 Posts	Re: Pro gear users please step in I think you are ok. Richmond told me the same thing a while back, but my gears had started getting noticeably louder. Ended up pulling them and found all teeth on pinion to be cracked. But this was after about 4-5 years of service. They just started getting louder this season. Richmond said you will find something when you pull them and I did. They said the new set may develop a slight noise after a few passes but not get any louder. Just as they said the new set developed a slight noise after the first few passes but that is all. I will know now once the noise changes and starts getting louder what is going on.

08-20-2008, 09:39 PM	#4
KingReptile Member Join Date: Mar 2008 Posts: 257 Likes: 0 Liked 0 Times in 0 Posts	Re: Pro gear users please step in 40 Coupe that black surface you blasted off that gear was a phospate coating which helps with initial break in .