CENTER section gear set up
Thread Starter
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
CENTER section gear set up
Hey guys.. If a rear end is set up and it whines loudly when your on the gas accelerating , off the gas coasting or in neutral coasting can it be said the whine is normal because the rear end was built for racing and it is set tighter ...
And this is not subtle ,, it reverbs in the passenger cabin and when changing speed up and letting off it sounds like the whine one gets from the radio speakers when you have electrical interference. At other times it is a loud deep humming and when coasting down to low speeds it sounds like granny gears in a transfer case....
IMOP the gears are not set correctly .. So is it a poorly set up set of gears or is it set up for racing...
And this is not subtle ,, it reverbs in the passenger cabin and when changing speed up and letting off it sounds like the whine one gets from the radio speakers when you have electrical interference. At other times it is a loud deep humming and when coasting down to low speeds it sounds like granny gears in a transfer case....
IMOP the gears are not set correctly .. So is it a poorly set up set of gears or is it set up for racing...
Drifting
Joined: Jul 2002
Posts: 1,995
Likes: 110
From: Garland Texas
It depends on the type of racing. For drag racing the backlash is set tighter for added strength. The downside is you may get a whine running it on the highway for a while after the diff is fully heated up. The whine will be barely noticable and only on very light acceleration. For road racing the diff is set up a little looser. Road racing creates a lot of heat in the diff and you need to leave room for expansion. I'm only talking 1 or 2 thousandts.
In your case it's pretty sure you have a bad rebuild. The 80-82 Dana is very hard to set up properly and if you don't have the correct tools you will go thru a lot of bearings before you get it right. If you go by the assumption that you reuse the same thickness shims behind the rear pinion race and under the carrier bearings it will never set up right.
Mike
In your case it's pretty sure you have a bad rebuild. The 80-82 Dana is very hard to set up properly and if you don't have the correct tools you will go thru a lot of bearings before you get it right. If you go by the assumption that you reuse the same thickness shims behind the rear pinion race and under the carrier bearings it will never set up right.
Mike
Last edited by tracdogg2; Oct 13, 2013 at 11:13 AM.
Drifting
Joined: Jul 2002
Posts: 1,995
Likes: 110
From: Garland Texas
You bet Markus. Once the original pattern have been driven on, the gears have taken a set. As with used gears, trying to find a pattern from there is nearly impossible. Gear sets are honed just like a cylinder wall is. Once you wear thru the honing the pattern is set. A noisy set of gears may eventually quiet down but it will take a long time. A new set of gears that have been set up badly are pretty much ruined.
Mike
Mike
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It's tear down time.
It won't grow back...and it should have never been noisy like that in the first place.
JIM
It won't grow back...and it should have never been noisy like that in the first place.
JIM
Drifting
Joined: Jul 2002
Posts: 1,995
Likes: 110
From: Garland Texas
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Thread Starter
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
Thanks guys,, This whined from zero up the speed scale , at steady speeds. On coast downs and when you where coming to a stop it sounds like granny gears ..
So ya not a race set up .. just a poorly assembled rear end that is now never gonna " grow back "
Can any one here the rear end noise in this clip ??
http://img96.imageshack.us/img96/725...xmylzhsolv.mp4
This one listen from half way to end you will here me slowing down and the gears
http://img585.imageshack.us/img585/7...jytznkwddi.mp4
I only posted this because I am being told it is my dislike that is the issue not the gear noise ... ha ha ha ha ha ha ha .. It is being said it is set for racing nothing wrong with it ... LMFAO
So ya not a race set up .. just a poorly assembled rear end that is now never gonna " grow back "
Can any one here the rear end noise in this clip ??
http://img96.imageshack.us/img96/725...xmylzhsolv.mp4
This one listen from half way to end you will here me slowing down and the gears
http://img585.imageshack.us/img585/7...jytznkwddi.mp4
I only posted this because I am being told it is my dislike that is the issue not the gear noise ... ha ha ha ha ha ha ha .. It is being said it is set for racing nothing wrong with it ... LMFAO
Last edited by diehrd; Oct 13, 2013 at 04:43 PM.
Thread Starter
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
Mike play clip one ,,what sounds like wind , thats the gears, my windows are up tops on ...
On second vid watch the time at 22:36.43 you can here a noise come into the clip and stay till the end , thats me slowing down to a stop and the gears sounding like granny gears .
Last edited by diehrd; Oct 14, 2013 at 06:24 AM.
Thread Starter
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
I agree the rear is self destructing . I cant even drive the car , and funny enough I am told that noise is ok and the issue is I just don't like it !!
Anyway I will sort it out by pulling that junk and re-gearing my diff and getting a refund somehow .. Funny how people are so anxious for your money but then are not stand up people when they realize you need it back LMAO ...
Le Mans Master
Joined: Aug 2010
Posts: 5,339
Likes: 546
From: Central Texas
I've been following your saga. Man I feel for you. Changing that rear end out just to discover that you got the shaft. I'd be in a rage. 
Let us know if the seller makes it right or not. I thought I saw that you purchased it from a forum member. We don't need dishonest people like that here on the forum. Just my .02.
Good luck.
Let us know if the seller makes it right or not. I thought I saw that you purchased it from a forum member. We don't need dishonest people like that here on the forum. Just my .02.
Good luck.
Last edited by Street Rat; Oct 16, 2013 at 08:20 AM.
Thread Starter
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
He wont make it right , I am out 300.00 labor to install it ,WHICH is dirt cheap to pull and re-install the center section . I paid 425.00 shipped ..
Seller says the noise is normal it is me who just does not like it , also offered to supply replacement gears , or give me other parts to cover it .. I asked who pays to pull it again and re-do the gears ..he had no answer.
Then he offers a refund AFTER I send it back , Now keep in mind i am out 725.00 so far, so I said no you send me a Shipping ticket he said no . I also said he should at least pay for half my R and R he sad no.
I then notice now dumb me , , that he joined the forum this year and all he is doing is selling items which is cool but if your gonna sell sell sell on a forum you got to make stuff right that causes a fellow member time sweat and hard earned cash.. We will see I complained to pay pal and my bank and it is now pending a resolution . .
Seller says the noise is normal it is me who just does not like it , also offered to supply replacement gears , or give me other parts to cover it .. I asked who pays to pull it again and re-do the gears ..he had no answer.
Then he offers a refund AFTER I send it back , Now keep in mind i am out 725.00 so far, so I said no you send me a Shipping ticket he said no . I also said he should at least pay for half my R and R he sad no.
I then notice now dumb me , , that he joined the forum this year and all he is doing is selling items which is cool but if your gonna sell sell sell on a forum you got to make stuff right that causes a fellow member time sweat and hard earned cash.. We will see I complained to pay pal and my bank and it is now pending a resolution . .
Thread Starter
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
Thanks street rat and those who have sent PM to help out .. This will be a long drawn out process , apparently it is my fault because I did not set the pinion depth or at least I am being told that anytime you have a rear done the pinion depth needs to be set to each car .. Apparently the installer should do this not the re-builder ...
In any case the car is parked , new gears and the master install is on the way for my original center section The one that caused this topic will sit until a satisfactory resolution can be had. . .
In any case the car is parked , new gears and the master install is on the way for my original center section The one that caused this topic will sit until a satisfactory resolution can be had. . .
Last edited by diehrd; Oct 18, 2013 at 07:38 AM.