| Author | Message | ||
     Nick Bellistri (Nickbell) Member Username: Nickbell Post Number: 102 Registered: 11-2002 |
I have a vibration in my truck which has baffled several of the best mechanics in Mass (Alan Elliot at Cityside). The RRC is lifted 3 inches with rovertym springs. I have replaced the front and rear diffs w/ 4.1 gears. It has a front driveshaft from GBR and a rear DC shaft also from GBR. To fix the rear pinion angle i have installed a set of rear adjustable trailing arms from GBR. The vibration has been traced to the rear of the car. Any idea on what else it could be. I have tried swapping various DC and stock shafts into the car and the vibration persists. | ||
| Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 163 Registered: 04-2003 |
Nick Did the vibration start before or after you installed the 4.11 gears?? On a RRC you can tell if it is the front or rear DS that is vibrating by removing one DS at a time. Test drive with only the front or rear DS. Does the vibration get worse if you let off the gas pedal, or depend on if you are going up a hill or down a hill?? My experience with Tom Woods DCDS is that they are poorly balanced(and sending it back is pointless). You can balance DS yourself to help get truck driveable again. Here's how: Drive truck for up to an hour on highway. Stop truck and attach a hose clamp on the drive shaft so that the screw(more weight) is located where the balancing wieght is tack welded on. drive for another few minutes to see if that makes it better or worse. Pull over and move the hose clamp 90 derees, then drive some more. Keep stopping and moving the hose clamp around the DS fine tuning. Try adding another hose clamp if you think you found the spot on the DS that needs the extra weight. Randall | ||
| Thomas B. McGee (Mcgeetb) New Member Username: Mcgeetb Post Number: 6 Registered: 01-2004 |
Nick, there's a guy in downtown Boston who does good work on rovers. I've had him work on mine a few times. His labor rates are great and prices are as good as you'll find on parts. He owns probably 5-6 rovers now from series I through DII. I can't for the life of me remember his name but I got the contact through Atlantic British. There aren't a lot of folks in Boston proper so it should be easy to find. He's diagnosed some crazy stuff on my vehicle that Rover Hanover couldn't figure out after 4 days of looking. If I remember his name, I'll get back to you. | ||
| Geoff 93 RRC (Geoff) Member Username: Geoff Post Number: 201 Registered: 11-2002 |
Pinion bearing in diff (holds input shaft from driveshaft in place) might have loosened up from the angles and increased torque from the 4.1 ratio. You might need to reset or add a little more preload on the bearing. Maybe the preload wasn't set correctly when the gears were added. See shop manual. |
