80LikesDurango DEX210 Thread
07-20-2012, 07:44 AM
#6886
Tech Regular
Chirping diff
Hi,
I just rebuilt my diff, new rings, thrust bearing and added ceramic balls. I have it built right with the smaller thrust washer out and pre-compressed the spring.
I washed all the parts with brake cleaner befor and broke it in after assembly.
I have it so tight it is almost a spool.
My only other thought is that it is not supposed to be built with ceramic balls, maybe they slip too much. I haven't seen them for sale on the durango site so this came to mind.
Can a team driver verify this.
I just rebuilt my diff, new rings, thrust bearing and added ceramic balls. I have it built right with the smaller thrust washer out and pre-compressed the spring.
I washed all the parts with brake cleaner befor and broke it in after assembly.
I have it so tight it is almost a spool.
My only other thought is that it is not supposed to be built with ceramic balls, maybe they slip too much. I haven't seen them for sale on the durango site so this came to mind.
Can a team driver verify this.
07-20-2012, 08:28 AM
#6887
So I guess I'll have to splurge on a full spring set before Wednesday (even at my pricing its a god deal, but alot of money for the 16 pairs of springs), what I was trying to avoid but it sounds like the stockers are out of wack for rear motor on dirt. Where are people getting these 4 hole pistons, or should I drill my blank ones, or can you just fill 2 holes up? So I should make 4x1.2 and 4x1.3 and run 25 and 30wt oil, along with 3rm and dark green and dark blue springs it should be better? I still have those pistons in my goodie bag so I'll work on that when I have time (I'm working every day until the big race) Thanks for the help guys
4 holes are made a few different ways, but most just put a drop of CA in 2 of the 6 hole pistons to close them up. Others use a soldering iron to melt. The holes shut, I use 5 minute epoxy. Any will work
07-20-2012, 08:37 AM
#6888
Hi,
I just rebuilt my diff, new rings, thrust bearing and added ceramic balls. I have it built right with the smaller thrust washer out and pre-compressed the spring.
I washed all the parts with brake cleaner befor and broke it in after assembly.
I have it so tight it is almost a spool.
My only other thought is that it is not supposed to be built with ceramic balls, maybe they slip too much. I haven't seen them for sale on the durango site so this came to mind.
Can a team driver verify this.
I just rebuilt my diff, new rings, thrust bearing and added ceramic balls. I have it built right with the smaller thrust washer out and pre-compressed the spring.
I washed all the parts with brake cleaner befor and broke it in after assembly.
I have it so tight it is almost a spool.
My only other thought is that it is not supposed to be built with ceramic balls, maybe they slip too much. I haven't seen them for sale on the durango site so this came to mind.
Can a team driver verify this.
07-20-2012, 09:14 AM
#6889
Tech Regular
07-20-2012, 09:25 AM
#6891
Hi,
I just rebuilt my diff, new rings, thrust bearing and added ceramic balls. I have it built right with the smaller thrust washer out and pre-compressed the spring.
I washed all the parts with brake cleaner befor and broke it in after assembly.
I have it so tight it is almost a spool.
My only other thought is that it is not supposed to be built with ceramic balls, maybe they slip too much. I haven't seen them for sale on the durango site so this came to mind.
Can a team driver verify this.
I just rebuilt my diff, new rings, thrust bearing and added ceramic balls. I have it built right with the smaller thrust washer out and pre-compressed the spring.
I washed all the parts with brake cleaner befor and broke it in after assembly.
I have it so tight it is almost a spool.
My only other thought is that it is not supposed to be built with ceramic balls, maybe they slip too much. I haven't seen them for sale on the durango site so this came to mind.
Can a team driver verify this.
The only thing I can think of is that it might. E the slipper pads are slipping.
Sounds like your diff is to tight.which shouldn't make any noise.
That would be my only guess though.
07-20-2012, 10:00 AM
#6892
If I remember correctly, when I ran this car... I wasn't able to run ceramics either. I only run high quality carbide in my diffs now. You are able to run a looser diff before it starts to slip than you can with ceramics, and they last 95% as long, ESPECIALLY in the dex210 diff, which lasts forever anyway. And the LAST thing the 210 needs, is an overly tight diff... it needs as much steering as it can get. I always run ceramics in my thrust however.
07-20-2012, 10:07 AM
#6893
I had a problem with diff slip this weekend at the JConcept indoor nats. High bite clay track. I started off with RM4 configuration and spent all practice and the 1st round of qualifying trying to figure out why I couldn't stop the tranny from slipping. I could not slip the diff in my had but as soon as I put the car on track, it sounded like it slipped and I couldn't clear 2 sets of triples that everyone else could. I switched to RM3 and all my problems were solved. Didn't rebuild the diff or change any parts other than the necessary idler gear. I can't explain why but there seems to be some problem with RM4.
07-20-2012, 11:45 AM
#6895
Hi,
I just rebuilt my diff, new rings, thrust bearing and added ceramic balls. I have it built right with the smaller thrust washer out and pre-compressed the spring.
I washed all the parts with brake cleaner befor and broke it in after assembly.
I have it so tight it is almost a spool.
My only other thought is that it is not supposed to be built with ceramic balls, maybe they slip too much. I haven't seen them for sale on the durango site so this came to mind.
Can a team driver verify this.
I just rebuilt my diff, new rings, thrust bearing and added ceramic balls. I have it built right with the smaller thrust washer out and pre-compressed the spring.
I washed all the parts with brake cleaner befor and broke it in after assembly.
I have it so tight it is almost a spool.
My only other thought is that it is not supposed to be built with ceramic balls, maybe they slip too much. I haven't seen them for sale on the durango site so this came to mind.
Can a team driver verify this.
07-20-2012, 01:26 PM
#6896
If I remember correctly, when I ran this car... I wasn't able to run ceramics either. I only run high quality carbide in my diffs now. You are able to run a looser diff before it starts to slip than you can with ceramics, and they last 95% as long, ESPECIALLY in the dex210 diff, which lasts forever anyway. And the LAST thing the 210 needs, is an overly tight diff... it needs as much steering as it can get. I always run ceramics in my thrust however.
I am no team driver but there are quite a few ppl including me having trouble with ceramics as diff balls. Search in the same thread and you will find many. The diff barks a lot even with any amount of tightening. The best upgrade is to get the bfast kit or least the diff balls.
07-20-2012, 02:33 PM
#6897
So I guess I'll have to splurge on a full spring set before Wednesday (even at my pricing its a god deal, but alot of money for the 16 pairs of springs), what I was trying to avoid but it sounds like the stockers are out of wack for rear motor on dirt. Where are people getting these 4 hole pistons, or should I drill my blank ones, or can you just fill 2 holes up? So I should make 4x1.2 and 4x1.3 and run 25 and 30wt oil, along with 3rm and dark green and dark blue springs it should be better? I still have those pistons in my goodie bag so I'll work on that when I have time (I'm working every day until the big race) Thanks for the help guys
