Rear End Differential Noise
03-10-2009, 09:18 PM
#21
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Aw shit.
I just changed my diff fluid 4 months ago and what came out was not a pretty picture. From the looks of the fill/drain bolts, the factory marker lines were unbroken, which means the fluid hadn't been changed for 48k!
It came out a metallic paste.....changing the fluid calmed some of the gear whine down a bit, but reading this makes me nervous....
May be time to bring in her to honda and get my money's worth out of my warranty. Who owns a car that long and doesn't change the diff fluid once!
I just changed my diff fluid 4 months ago and what came out was not a pretty picture. From the looks of the fill/drain bolts, the factory marker lines were unbroken, which means the fluid hadn't been changed for 48k!
It came out a metallic paste.....changing the fluid calmed some of the gear whine down a bit, but reading this makes me nervous....
May be time to bring in her to honda and get my money's worth out of my warranty. Who owns a car that long and doesn't change the diff fluid once!
03-11-2009, 06:12 AM
#22
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I'm learning that the rear differential on the s2000's are a weak link. Crush sleeve can give, leading to gear play. And being thousandth's of inches off is all it takes to set things off. Once sheared metal particles get into the bearings, it can start making noises from additional wear.
Changing the diff fluid is a good idea, so is taking advantage of Honda warranty!
Honda will probably push back, so be prepared.
If you don't get the car repaired by warranty, might be a good idea to change the fluid again soon or check the magnetic bolt. Metallic is good if it's painting body parts, not gears.
I'm changing to stronger gears, either 4.44 or 4.57 and solid sleeve.
Good luck.
Changing the diff fluid is a good idea, so is taking advantage of Honda warranty!
Honda will probably push back, so be prepared.
If you don't get the car repaired by warranty, might be a good idea to change the fluid again soon or check the magnetic bolt. Metallic is good if it's painting body parts, not gears.
I'm changing to stronger gears, either 4.44 or 4.57 and solid sleeve.
Good luck.
03-11-2009, 11:04 AM
#23
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p-hizzle Posted on Mar 11 2009, 04:12 PM
No its not.
The weak link is the operator and/or installer of the gears.
No.
Driving forward you don't even need a crush sleeve, or a solid sleeve for that matter.
When the locking nut on the end of the pinion loosens you get play.
For example, when you don't use a new one when you swap flanges (AP1 > AP2 or vv).
During engine braking or driving backwards the pinion will move towards the ring.
When the pinion bearings wear you get play too, obviously.
So is following Honda's recommendation on diff fluid and understanding (if possible) why Honda picked that kind of fluid.
4.44's are not necessarily stronger.
4.57's are no longer made, its 4.56 now.
Double-Diamond Richmond Gears
A solid sleeve is harder to install (= drawback) and the only benefit it gives is that you can tighten the locking nut with more torque and the torque used doesn't change pinion bearing pre-load.
IMO.
I'm learning that the rear differential on the s2000's are a weak link.
The weak link is the operator and/or installer of the gears.
Crush sleeve can give, leading to gear play.
Driving forward you don't even need a crush sleeve, or a solid sleeve for that matter.
When the locking nut on the end of the pinion loosens you get play.
For example, when you don't use a new one when you swap flanges (AP1 > AP2 or vv).
During engine braking or driving backwards the pinion will move towards the ring.
When the pinion bearings wear you get play too, obviously.
Changing the diff fluid is a good idea, so is taking advantage of Honda warranty!
I'm changing to stronger gears, either 4.44 or 4.57 and solid sleeve.
4.57's are no longer made, its 4.56 now.
Double-Diamond Richmond Gears
A solid sleeve is harder to install (= drawback) and the only benefit it gives is that you can tighten the locking nut with more torque and the torque used doesn't change pinion bearing pre-load.
IMO.
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