Driveline alignment
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From: minneapolis,mn
Driveline alignment I've been chasing an anoying driveline harmonic vibration for a while,changed
to a 31/2 aluminum driveshaft from a 3" chomemoly in a effot to fix it.Well the
new driveshaft killed the u joints in 1500 miles.The pinion angle was set to -1.5,had it at -2 with the steel shaft reduced it on the new one and no help on the vibration.I am thinking that the moser housing in my car may not have the brackets welded on perfectly causing the rear end to sit scewed in the car,compounding the angles the u joints must endure.Anyone know the best way to verify if the rear is in straight?I have adjustable lca's and panhard so
I can tweak it.
thanks in advance
Mark
to a 31/2 aluminum driveshaft from a 3" chomemoly in a effot to fix it.Well the
new driveshaft killed the u joints in 1500 miles.The pinion angle was set to -1.5,had it at -2 with the steel shaft reduced it on the new one and no help on the vibration.I am thinking that the moser housing in my car may not have the brackets welded on perfectly causing the rear end to sit scewed in the car,compounding the angles the u joints must endure.Anyone know the best way to verify if the rear is in straight?I have adjustable lca's and panhard so
I can tweak it.
thanks in advance
Mark
Joined: Mar 2005
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From: 32639 Groesbeck HWY. Fraser MI 48026
Originally Posted by z-ya
I've been chasing an anoying driveline harmonic vibration for a while,changed
to a 31/2 aluminum driveshaft from a 3" chomemoly in a effot to fix it.Well the
new driveshaft killed the u joints in 1500 miles.The pinion angle was set to -1.5,had it at -2 with the steel shaft reduced it on the new one and no help on the vibration.I am thinking that the moser housing in my car may not have the brackets welded on perfectly causing the rear end to sit scewed in the car,compounding the angles the u joints must endure.Anyone know the best way to verify if the rear is in straight?I have adjustable lca's and panhard so
I can tweak it.
thanks in advance
Mark
to a 31/2 aluminum driveshaft from a 3" chomemoly in a effot to fix it.Well the
new driveshaft killed the u joints in 1500 miles.The pinion angle was set to -1.5,had it at -2 with the steel shaft reduced it on the new one and no help on the vibration.I am thinking that the moser housing in my car may not have the brackets welded on perfectly causing the rear end to sit scewed in the car,compounding the angles the u joints must endure.Anyone know the best way to verify if the rear is in straight?I have adjustable lca's and panhard so
I can tweak it.
thanks in advance
Mark
Sounds like you got a bad housing. Do you have any axle shops in you area that have a straightening bar?
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From: minneapolis,mn
I measured the car today it was off 3/8" side to side,and 1/2" front to back,the u joints wore the end caps allowing the shaft to float.The trunions and needle bearinigs
were still tight.
were still tight.
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From: Kent WA
I had a similar problem... my 12 bolt was skewed slightly toward the passenger side of the car. Fixed it by turning the crap out of my adjustable panhard rod (had to move the rear end over between half an inch and a full inch), plus had to mess around with the pinion angle.
I used to have a really bad vibration over 60mph, especially when I let my foot off the gas. Now, no more vibration...
I used to have a really bad vibration over 60mph, especially when I let my foot off the gas. Now, no more vibration...
Thread Starter
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From: minneapolis,mn
I measured the car today it was off 3/8" side to side,and 1/2" front to back,the u joints wore the end caps allowing the shaft to float.The trunions and needle bearinigs
were still tight. As far as I know there are no shops in the twin cities area that have that capability.
were still tight. As far as I know there are no shops in the twin cities area that have that capability.
