Who in Detroit can check 8-3/4 housing straightness?
#1480793
08/07/13 12:06 AM
08/07/13 12:06 AM
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Joined: Jan 2003
Posts: 1,793 Windsor, ON, Canada
Diplomat360
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 1,793
Windsor, ON, Canada
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OK, my current housing has a bad vibration in it, my local Mopar guy pointed out that it looks like the housing is bent...all driveline parts are new, U-joints, driveshaft, bearings, pinion angle is correct (street setup) etc, etc...
What local Detroit shops are capable of checking the housing for being straight? I have a spare one that I'm thinking of cleaning up and getting ready for a swap.
I'm thinking DTS??? Anyone else?
Thanks!
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Re: Who in Detroit can check 8-3/4 housing straightness?
[Re: Diplomat360]
#1480794
08/07/13 12:17 AM
08/07/13 12:17 AM
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Joined: Jan 2003
Posts: 1,263 Southwestern Ontario Canada
racealittle
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
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I would think that you could test the housing for straightness by using a kit that is used to shorten or build a housing. You know, the kit with the pucks and the bar. You should be able to find that kind of kit locally from someone who shortens rear axle housings. I know a few guys who have them. One guy might loan me one.
Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen!
Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!
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Re: Who in Detroit can check 8-3/4 housing straightness?
[Re: BigBlockMopar]
#1480798
08/07/13 02:04 PM
08/07/13 02:04 PM
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Joined: Jan 2004
Posts: 4,632 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,632
Motor City
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I have a narrowing fixture I used/made when I narrowed my Dana 60 housing. I would imagine it could be bolted up to an 8-3/4 & when the center shaft was inserted if it won't slide straight thru it would tell you if the housing was bent or not.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: Who in Detroit can check 8-3/4 housing straightness?
[Re: Diplomat360]
#1480801
08/09/13 10:13 AM
08/09/13 10:13 AM
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Joined: Jan 2003
Posts: 1,793 Windsor, ON, Canada
Diplomat360
OP
top fuel
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OP
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Windsor, ON, Canada
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Thanks you guys!
Let me explain the symptoms and why it was suggested to me that the housing is bent.
SYMPTOMS ======== 1) with the rear end up in the air, so tires are off the ground, in fact tires can be removed, drivetrain in N(eutral), I can turn the wheels forward easily, but they are extremely hard, nearly impossible to rotate backwards, brakes are not a problem since you can remove the drums and turning by axle flange produces the same result (my local shop buy pointed this out as a proof of a bent housing)
2) the rear tire thread has a wear pattern, the pattern is nice and even across the tire on the pass side, but on the driver side the pattern is off-center and towards the inner sidewalls of the tire
3) at higher speed, so around 30-40 mph a noticeable vibration is present, it is cyclical, almost like a repeated SG clutch chatter that you might get going around a sharp corner
The rear end in question is using a '741 carrier, 3.91 SG ratio. New MP clutch kit, only about 500 KMs of use since rebuilt. All new bearings. Fluid is a synthetic mix with the SG additive.
Driveshaft is brand new from DynoTech in Troy, MI...as are the U-joints, yoke, etc.
Engine assembly was balanced at the machine shop, I do not feel any vibration when revving on it's own.
What I can tell you though is that this very same housing, but a different carrier were previously used in another car of mine. I do remember having a similar vibration and back then, not knowing much about Mopars and drivetrains, I simply attributed the 'shake' to bad driveshaft (it was a stock piece), bad U-joints (stock as well) and so forth. So the housing is he only consistent part that seems to 'move' with the vibration.
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Re: Who in Detroit can check 8-3/4 housing straightness?
[Re: ahy]
#1480802
08/09/13 10:18 AM
08/09/13 10:18 AM
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Joined: Jan 2003
Posts: 1,793 Windsor, ON, Canada
Diplomat360
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OP
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Posts: 1,793
Windsor, ON, Canada
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Quote:
A 4 wheel alignment would tell you also and I agree a bent housing would not likely cause vibration. Tire scrub maybe, funny handling maybe but not vibration.
Here is a scan of the alignment paperwork, a BEFORE & AFTER:
BEFORE (basic 'get things driveable' setup done by me since all suspension parts were re-done on the car):
AFTER (shop set alignmnet)
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