TC3 Forum
#6646
Tc3 Diff bearings?
Hi all
I have been having difficulties with getting bearings to fir in the differentials. I have the composite stock outdrive p/n 3908 and I tried the 3916 and the 6909 bearing kits and they are too wide for the diff to operate. What is evryone else using in place of the bushings?
Thanks
I have been having difficulties with getting bearings to fir in the differentials. I have the composite stock outdrive p/n 3908 and I tried the 3916 and the 6909 bearing kits and they are too wide for the diff to operate. What is evryone else using in place of the bushings?
Thanks
#6647
there are special bearings made for the plastic diff. they are very narrow, like the bushings. I will try to find you the part number.
#6648
I was told not to use the Bearings with the Plastic Diff outdrives. You will melt the diff outdrives!!!
That is the reason for the bushings.
That is the reason for the bushings.
#6650
Tech Fanatic
Re: Tc3 Diff bearings?
Originally posted by rinkrat99
Hi all
I have been having difficulties with getting bearings to fir in the differentials. I have the composite stock outdrive p/n 3908 and I tried the 3916 and the 6909 bearing kits and they are too wide for the diff to operate. What is evryone else using in place of the bushings?
Thanks
Hi all
I have been having difficulties with getting bearings to fir in the differentials. I have the composite stock outdrive p/n 3908 and I tried the 3916 and the 6909 bearing kits and they are too wide for the diff to operate. What is evryone else using in place of the bushings?
Thanks
#6651
Associated got back to me that there is no Bearing available for the molded outdrives. They do have 2 bearing sets for the steel outdrives.
Here is their answer
With the composite diffs you will only be able to use bushings. Our steel diffs have bearings inside them. Their part number is #3918.
If you were to put bearings in your compositie diff, you would not notice any difference in performance at all. Absolutely none.
CASE CLOSED
Here is their answer
With the composite diffs you will only be able to use bushings. Our steel diffs have bearings inside them. Their part number is #3918.
If you were to put bearings in your compositie diff, you would not notice any difference in performance at all. Absolutely none.
CASE CLOSED
#6652
I don't think he's talking about the bearings INSIDE the outdrives, he's talking about the bushings/bearings inside the diff cases that the outdrives go through.
#6654
rinkrat is correct. The bearings build up a lot of heat and will melt the plastic of the outdrives on the Diff. If there was a performance gain by going to bearings in the plastic outdrives I would think that AE would have a bearing for them..but they dont.
#6655
Tech Fanatic
Originally posted by rinkrat99
Associated got back to me that there is no Bearing available for the molded outdrives. They do have 2 bearing sets for the steel outdrives.
Here is their answer
With the composite diffs you will only be able to use bushings. Our steel diffs have bearings inside them. Their part number is #3918.
If you were to put bearings in your compositie diff, you would not notice any difference in performance at all. Absolutely none.
CASE CLOSED
Associated got back to me that there is no Bearing available for the molded outdrives. They do have 2 bearing sets for the steel outdrives.
Here is their answer
With the composite diffs you will only be able to use bushings. Our steel diffs have bearings inside them. Their part number is #3918.
If you were to put bearings in your compositie diff, you would not notice any difference in performance at all. Absolutely none.
CASE CLOSED
#6656
Super Moderator
iTrader: (2)
Originally posted by mike_Webb
rinkrat is correct. The bearings build up a lot of heat and will melt the plastic of the outdrives on the Diff. If there was a performance gain by going to bearings in the plastic outdrives I would think that AE would have a bearing for them..but they dont.
rinkrat is correct. The bearings build up a lot of heat and will melt the plastic of the outdrives on the Diff. If there was a performance gain by going to bearings in the plastic outdrives I would think that AE would have a bearing for them..but they dont.
#6657
Hey GrizzBob
This is the most bizzare story. The text of my last message was taken directly from the Associated Tech Support email.
The LHS was kind enough to order both bearing kits which we thought would fit. They ordered the 6909 and the Factory Team 3916 and neither fit the composite outdrives p/n 3908. Both bearing kits were the same in every dimension.
If there ever was a bearing kit which you and BubblesTC3 say there is, it is not available any longer. We tried the diff rebuild kits, different outdrives, everything and nothing worked except for the bushings. The bearings are made for the steel outdrives and these do fit nicely between the hubs. Maybe the bearing kits work with aftermarket outdrives.
BubblesTC3 - Can you post the p/n you found and I bet it is either the 3916 for $11 or the 6909 for $6 per pr.
This is the most bizzare story. The text of my last message was taken directly from the Associated Tech Support email.
The LHS was kind enough to order both bearing kits which we thought would fit. They ordered the 6909 and the Factory Team 3916 and neither fit the composite outdrives p/n 3908. Both bearing kits were the same in every dimension.
If there ever was a bearing kit which you and BubblesTC3 say there is, it is not available any longer. We tried the diff rebuild kits, different outdrives, everything and nothing worked except for the bushings. The bearings are made for the steel outdrives and these do fit nicely between the hubs. Maybe the bearing kits work with aftermarket outdrives.
BubblesTC3 - Can you post the p/n you found and I bet it is either the 3916 for $11 or the 6909 for $6 per pr.
#6658
I had the same thing happen to me. Down at Snowbirds last year I kept having a Bone pop out of my Diff. So I went and bought the IRS Aluminum Outdrives and put the bushings in for the plastic outdrives and it did not work. I went down and talked to Mike Dumas and he gave me the Bearings I needed for the Diff. I asked if I could get bearings for the rear diff and he told me not to use the bearings in the rear diff cause it will melt the outdrive and the bearings were thicker then the bushings.
Give it a try though and take pictures if they do melt so we can all see ...it is your diff and money afterall
Give it a try though and take pictures if they do melt so we can all see ...it is your diff and money afterall
#6660
Tech Fanatic
As I recall, 3916(accually what it says on the web site) is , or should be, some replacement berrings for part number 3913(light weight diff assembly). So those should be the ones. As for part 6909, that is a diff berring(possibally for a different car, or the steel outdrive diffs) but there are many ae cars with relitivally the same dimentions for diff berrings, but are not for the TC3
I will try the 3916 berrings this weekend, and post the results. I did see the berrings that are for the plastic outdrives, but I do not know the part number.
I will try the 3916 berrings this weekend, and post the results. I did see the berrings that are for the plastic outdrives, but I do not know the part number.