vibration
Thread Starter
Teching In
Joined: May 2012
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vibration Ok so I have a 2000 z28 and I'm looking for a shop who is good at tuning suspension. I have a bad vibration on decal it feels like my whole car is going to fall apart. It has slp springs, sphon adjustable frame mounted torque arm, sub frame connectors, spohn lca, moser 12 bolt, spohn solid motor mounts and adjustable spohn phb. I have made sure that everything is tight and my current pinion angle is -2 it's great when I step on it but vibrates bad on decal. If anyone has tips or can point me in the right direction to take to a local shop by stockton ca, I would appreciate it
Joined: Jun 2011
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From: Land of the Mormon's although I'm not one of them
It sounds like one of two things:
1) The Torque Arm is allowing the rear axle to rotate; thus screwing up the driveline angles of the driveshaft/rear-axle. Check the bolts and bushings on the Torque Arm; look for any slop, movement, etc. Also check any/all of the other suspension points for the rear suspension.
2) The gears in your rear-end have issues; namely the pinion depth or backlash is too large. This may be an issue. Pull the cover off the rear end and look at the wear pattern on the gears; it should be centered and even on all faces of the teeth.
1) The Torque Arm is allowing the rear axle to rotate; thus screwing up the driveline angles of the driveshaft/rear-axle. Check the bolts and bushings on the Torque Arm; look for any slop, movement, etc. Also check any/all of the other suspension points for the rear suspension.
2) The gears in your rear-end have issues; namely the pinion depth or backlash is too large. This may be an issue. Pull the cover off the rear end and look at the wear pattern on the gears; it should be centered and even on all faces of the teeth.
Ok so I have a 2000 z28 and I'm looking for a shop who is good at tuning suspension. I have a bad vibration on decal it feels like my whole car is going to fall apart. It has slp springs, sphon adjustable frame mounted torque arm, sub frame connectors, spohn lca, moser 12 bolt, spohn solid motor mounts and adjustable spohn phb. I have made sure that everything is tight and my current pinion angle is -2 it's great when I step on it but vibrates bad on decal. If anyone has tips or can point me in the right direction to take to a local shop by stockton ca, I would appreciate it
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Glenn ***
Sales Tech
www.bmrsuspension.com
813.986.9302
Find a Quality alignment shop near you!
Glenn ***
Sales Tech
www.bmrsuspension.com
813.986.9302
Find a Quality alignment shop near you!
Thread Starter
Teching In
Joined: May 2012
Posts: 4
Likes: 0
Thread Starter
Teching In
Joined: May 2012
Posts: 4
Likes: 0
It sounds like one of two things:
1) The Torque Arm is allowing the rear axle to rotate; thus screwing up the driveline angles of the driveshaft/rear-axle. Check the bolts and bushings on the Torque Arm; look for any slop, movement, etc. Also check any/all of the other suspension points for the rear suspension.
2) The gears in your rear-end have issues; namely the pinion depth or backlash is too large. This may be an issue. Pull the cover off the rear end and look at the wear pattern on the gears; it should be centered and even on all faces of the teeth.
1) The Torque Arm is allowing the rear axle to rotate; thus screwing up the driveline angles of the driveshaft/rear-axle. Check the bolts and bushings on the Torque Arm; look for any slop, movement, etc. Also check any/all of the other suspension points for the rear suspension.
2) The gears in your rear-end have issues; namely the pinion depth or backlash is too large. This may be an issue. Pull the cover off the rear end and look at the wear pattern on the gears; it should be centered and even on all faces of the teeth.
Joined: Jun 2011
Posts: 314
Likes: 0
From: Land of the Mormon's although I'm not one of them
Your the 2 person to metion the rear end I have 410 gears now Im haveing a hard time understanding how this would affect it only on deceal? I'm in need of new posi clutches so I'm going to open it anyway but if you can explain how it would only do it on deceal? Thanks
Put the rear of the car on jackstands; pull the driveshaft off, and the rear cover off and check the following things:
1) Pinion bearing preload; there shouldn't be any in-out motion of the pinion at the yoke. See how much slop there is in rotating the yoke until you can feel/hear the ring gear making contact.
2) Look at the wear pattern on the gears and compare it to what it should look like; there are plenty of pictures online.
If I had to put $$ on, I'd say you'll find an issue with one of these 2 things. The bad part is, depending on how long you've driven on the gears; you may need a new set of bearings/gears and to get the rearend rebuilt.
Thread Starter
Teching In
Joined: May 2012
Posts: 4
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The gears load on a different face during deceleration; they can be smooth when on one face, and cause a vibration on the other face just due to the nature of the design of the gears. (Without getting into technical discussion about loading of helical gear designs, bearing loading, etc.
Put the rear of the car on jackstands; pull the driveshaft off, and the rear cover off and check the following things:
1) Pinion bearing preload; there shouldn't be any in-out motion of the pinion at the yoke. See how much slop there is in rotating the yoke until you can feel/hear the ring gear making contact.
2) Look at the wear pattern on the gears and compare it to what it should look like; there are plenty of pictures online.
If I had to put $$ on, I'd say you'll find an issue with one of these 2 things. The bad part is, depending on how long you've driven on the gears; you may need a new set of bearings/gears and to get the rearend rebuilt.
Put the rear of the car on jackstands; pull the driveshaft off, and the rear cover off and check the following things:
1) Pinion bearing preload; there shouldn't be any in-out motion of the pinion at the yoke. See how much slop there is in rotating the yoke until you can feel/hear the ring gear making contact.
2) Look at the wear pattern on the gears and compare it to what it should look like; there are plenty of pictures online.
If I had to put $$ on, I'd say you'll find an issue with one of these 2 things. The bad part is, depending on how long you've driven on the gears; you may need a new set of bearings/gears and to get the rearend rebuilt.
