Noise from the rear - ZR-1 Net Registry Forums

SharkPilot · 08-20-2009

It's been a busy week so not much time in the garage. I did run the car on the stands though. There was no noise in 1st or 2nd gears so up to 4th it went. Then I could here a distinct clicking sound that sounded like it was resonating in the left half shaft. I listened to both hubs with my stethiscope and they both sounded smooth and quiet. More importantly... they sounded the same. Right now I'm going after u-joints. All six of them will get replaced.
I can't find a spec for wheel bearings in the FSM. Jeff, the .005" that you refer to, is that the hub endplay or the 'slop' out at the shoulder of the tire? .005 out at the end of the tire sounds awfully tight to me but you guys know more about this than me. Shark rear bearings have some motion but those are the old fashioned packed and stacked bearings.
I do appreciate the help from all of you. In 25+ years of Shark ownership there isn't much I haven't fixed, rebuilt, starred at or just simply tripped over. With a C4 I'm back down the learning curve a bit. There's always more to learn.

08-20-2009	#7
SharkPilot Join Date: Aug 2005 Location: Anaheim, California Posts: 105	Re: Noise from the rear It's been a busy week so not much time in the garage. I did run the car on the stands though. There was no noise in 1st or 2nd gears so up to 4th it went. Then I could here a distinct clicking sound that sounded like it was resonating in the left half shaft. I listened to both hubs with my stethiscope and they both sounded smooth and quiet. More importantly... they sounded the same. Right now I'm going after u-joints. All six of them will get replaced. I can't find a spec for wheel bearings in the FSM. Jeff, the .005" that you refer to, is that the hub endplay or the 'slop' out at the shoulder of the tire? .005 out at the end of the tire sounds awfully tight to me but you guys know more about this than me. Shark rear bearings have some motion but those are the old fashioned packed and stacked bearings. I do appreciate the help from all of you. In 25+ years of Shark ownership there isn't much I haven't fixed, rebuilt, starred at or just simply tripped over. With a C4 I'm back down the learning curve a bit. There's always more to learn.