Looking for vibration
#1662653
08/23/14 03:33 PM
08/23/14 03:33 PM
|
Joined: Jan 2003
Posts: 482 Marysville Wa
moparfan
OP
mopar
|
OP
mopar
Joined: Jan 2003
Posts: 482
Marysville Wa
|
Between 52 and 65 or so. These are the things I've changed or checked
run out on axles .004 brake drums replaced wheels tires switched with known rear axle bearings replaced shocks replaced u joints replaced balanced driveshaft
trans angle -1.8 driveline +1.6 pinion +2.0
I read it needs a minimum 1.0. Is this my vibration?
2017 Challenger R/T Scat Pack Shaker 2021 T/A 392 1970 Challenger R/T 383,727, 3.55, (Wife's car) 1970 Challenger R/T SE 440-4, 4-speed, 4.10 Dana 1972 Dodge Demon 396 W-2,904, 4.30, 10.660 @ 125.85 2020 Hellcat redeye
|
|
|
Re: Looking for vibration
[Re: moparfan]
#1662654
08/23/14 07:25 PM
08/23/14 07:25 PM
|
Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
top fuel
|
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
|
Had one at 70 mph on my b-body. Too much pinion angle. Reduced from 6* to 4*. Much improved. Prior to 6* it was less than 2* and it vibrated. Had to find the sweet spot.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
|
|
|
Re: Looking for vibration
[Re: moparfan]
#1662655
08/23/14 11:11 PM
08/23/14 11:11 PM
|
Joined: May 2003
Posts: 6,566 Downtown Roebuck Ont
Twostick
Still wishing...
|
Still wishing...
Joined: May 2003
Posts: 6,566
Downtown Roebuck Ont
|
Quote:
Between 52 and 65 or so. These are the things I've changed or checked
run out on axles .004 brake drums replaced wheels tires switched with known rear axle bearings replaced shocks replaced u joints replaced balanced driveshaft
trans angle -1.8 driveline +1.6 pinion +2.0
I read it needs a minimum 1.0. Is this my vibration?
How is the slip yoke and tailshaft bushing?
Kevin
|
|
|
Re: Looking for vibration
[Re: Twostick]
#1662657
08/24/14 12:52 AM
08/24/14 12:52 AM
|
Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
What Kevin said & I'd also check the amount of front yoke end play into the trans (want 3/4-7/8). I would then shim the pinion up or down with angled perches & see if it changes
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Looking for vibration
[Re: RapidRobert]
#1662658
08/24/14 12:18 PM
08/24/14 12:18 PM
|
Joined: Jan 2003
Posts: 482 Marysville Wa
moparfan
OP
mopar
|
OP
mopar
Joined: Jan 2003
Posts: 482
Marysville Wa
|
The slip yoke bushing feels fine, no leaks etc. There is about 1" of end play. I didn't say prior that I have added shims under the trans mount, moved the vibration up in speed and more significant. Also shimmed the diff down 4 degrees and made it worse as well. I'll try the jack it up and run it w/o the tires and see if I can see where it coming from. I did follow the truck down the freeway and could see the rear end bouncing when the vibration was present.
2017 Challenger R/T Scat Pack Shaker 2021 T/A 392 1970 Challenger R/T 383,727, 3.55, (Wife's car) 1970 Challenger R/T SE 440-4, 4-speed, 4.10 Dana 1972 Dodge Demon 396 W-2,904, 4.30, 10.660 @ 125.85 2020 Hellcat redeye
|
|
|
Re: Looking for vibration
[Re: moparfan]
#1662659
08/24/14 09:21 PM
08/24/14 09:21 PM
|
Joined: Jan 2003
Posts: 482 Marysville Wa
moparfan
OP
mopar
|
OP
mopar
Joined: Jan 2003
Posts: 482
Marysville Wa
|
Well I give up, shimmed the rear up and down, both ways makes the vibration worse. Shimed the trans up, got worse. Balanced all 4 tires/wheels just in case. I can make it worse but can't make it go away. Odd thing is you can barely feel it when it's on jack stands. Tire and wheels made no difference. The vibration when on jack stands is barely noticeable no matter the changes made. I wondering if it's in the diff? It feels fine when your turn it? I did have the cover off when replacing the bearings and everything looked good.
2017 Challenger R/T Scat Pack Shaker 2021 T/A 392 1970 Challenger R/T 383,727, 3.55, (Wife's car) 1970 Challenger R/T SE 440-4, 4-speed, 4.10 Dana 1972 Dodge Demon 396 W-2,904, 4.30, 10.660 @ 125.85 2020 Hellcat redeye
|
|
|
Re: Looking for vibration
[Re: moparfan]
#1662660
08/24/14 09:36 PM
08/24/14 09:36 PM
|
Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
I was wondering about the pig myself especially since you can see the housing vibrating. Otherwise I'm still thinking shaft balance/ujoints/ext housing bushing.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Looking for vibration
[Re: boydsdodge]
#1662664
08/30/14 09:41 AM
08/30/14 09:41 AM
|
Joined: Jan 2003
Posts: 4,664 Newfoundland
mopar_man
master
|
master
Joined: Jan 2003
Posts: 4,664
Newfoundland
|
You said you changed tires and rims. but that could be the problem . Balancing the tires don't fix "out of roundness" , You just might have put on something that had the same problem but not have been noticeable on another vehicle. If the diff is vibrating , most likely its the tires or the shaft. Do a few things first that don't cost too much time and money . Put a hose clamp on the shaft near the pinion , mark where the screw is , rotate about an inch at a time until you find the sweet spot. If you find a position where the vibe is less but still isn't gone , add another clamp. If this fixes the problem, have the shaft replaced with a known balanced one or have your original balanced. If this don't fix the problem, go back to tires and have them checked for eccentricity or out of roundness at some qualified shop, not at Wally World or some other fast part outlet . Let us know how it works out .
|
|
|
|
|