Comptech diff and 4.57s FUBAR'D
Joined: Dec 2001
Posts: 11,399
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Thanks, that is interesting info.
You said " and the new whine was subtle. I thought maybe there was a police siren in the distance." My car ash something like that know. My gut is telling me rear bearing are doing it and not the diff. So in your case, it too could have been something else. but we will only know for sure when you swap the diff if the noise is still there.
Also you said "Heard a faint recurrent thumping that got louder during the course of that single drive. It is marked under light-medium transmission loads and especially when rocking on and off the accelerator under those loads."
That is not the normally diff failure noise or failure. There is more to this. I personally would love to find out what it was.
Thanks for the info.
You said " and the new whine was subtle. I thought maybe there was a police siren in the distance." My car ash something like that know. My gut is telling me rear bearing are doing it and not the diff. So in your case, it too could have been something else. but we will only know for sure when you swap the diff if the noise is still there.
Also you said "Heard a faint recurrent thumping that got louder during the course of that single drive. It is marked under light-medium transmission loads and especially when rocking on and off the accelerator under those loads."
That is not the normally diff failure noise or failure. There is more to this. I personally would love to find out what it was.
Thanks for the info.
Joined: Sep 2003
Posts: 10,301
Likes: 18
From: New Jersey
Originally Posted by CKit,May 17 2007, 03:55 PM
But knowing that my "normal" driving is more than the S2k can handle without $3k extra in mods... makes me revisit the Cayman S decision.
You can
all you want, but some of us chose the S2k not because we couldn't afford a car 2x the cost... but because we thought the performance would be enough. Up until this point, I was perfectly happy with SC S2k as a "fun car."
So you're telling me that if I bought a $50 pair of combat boots and they tore a hole in the side while playing aggressive paintball (as opposed to "real" combat), you'd say... "what did you expect from a $50 pair of shoes?"
It's a sports car. It may be more than good enough for some people. I thought it was for me. But I hit the durability wall (even after putting in money to "upgrade" the #1 and #2 weak links).
You can say that the car wasn't designed to hold more power.... but then I say it was destined for a limited life span and born to be obsolete. There's no room for improvement. And when Mazdaspeed 3's are "better handling" than an S2000... and there's no option... maybe it's time to change cars.
You can
all you want, but some of us chose the S2k not because we couldn't afford a car 2x the cost... but because we thought the performance would be enough. Up until this point, I was perfectly happy with SC S2k as a "fun car."So you're telling me that if I bought a $50 pair of combat boots and they tore a hole in the side while playing aggressive paintball (as opposed to "real" combat), you'd say... "what did you expect from a $50 pair of shoes?"
It's a sports car. It may be more than good enough for some people. I thought it was for me. But I hit the durability wall (even after putting in money to "upgrade" the #1 and #2 weak links).
You can say that the car wasn't designed to hold more power.... but then I say it was destined for a limited life span and born to be obsolete. There's no room for improvement. And when Mazdaspeed 3's are "better handling" than an S2000... and there's no option... maybe it's time to change cars.
However, your army boot comparison is wrong. If you said something like "So you're telling me that if I bought a $50 pair of combat boots and they tore a hole in the side while playing aggressive paintball while walking through nails,you'd say... "what did you expect from a $50 pair of shoes?""
Remember, you upgraded your car past what was orgionally intended of it so yes, what did you expect? Its part of the modifying game and you have to pay to play.
Sure you might have upgraded some weak links, but you forgot a few more (obviously) and plus nothing is guarenteed. I drive a modified s2k as well, when something breaks, it might suck but I know its what I pay to play.
Thread Starter
Former Moderator
Joined: Aug 2004
Posts: 14,729
Likes: 8
Originally Posted by Stratocaster,May 17 2007, 07:15 PM
Thanks, that is interesting info.
You said " and the new whine was subtle. I thought maybe there was a police siren in the distance." My car ash something like that know. My gut is telling me rear bearing are doing it and not the diff. So in your case, it too could have been something else. but we will only know for sure when you swap the diff if the noise is still there.
Also you said "Heard a faint recurrent thumping that got louder during the course of that single drive. It is marked under light-medium transmission loads and especially when rocking on and off the accelerator under those loads."
That is not the normally diff failure noise or failure. There is more to this. I personally would love to find out what it was.
Thanks for the info.
You said " and the new whine was subtle. I thought maybe there was a police siren in the distance." My car ash something like that know. My gut is telling me rear bearing are doing it and not the diff. So in your case, it too could have been something else. but we will only know for sure when you swap the diff if the noise is still there.
Also you said "Heard a faint recurrent thumping that got louder during the course of that single drive. It is marked under light-medium transmission loads and especially when rocking on and off the accelerator under those loads."
That is not the normally diff failure noise or failure. There is more to this. I personally would love to find out what it was.
Thanks for the info.
The thumping no longer starts quietly. It's there thumping along even at low speeds.
Bearings are usually squealing/grinding from what I'm reading. This is a definite thumping. Like a part is off axis and hitting the wall of the casing.
I'll post pix in a week or so when we get back from vacation and I have time to tear it down.
I'm pretty curious, too.
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Joined: Feb 2005
Posts: 8,953
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From: MD
I had the EXACT same problem... I thought it was funny when I was reading your symptoms, because it happened to me on my way to a wedding too.
I had a thumping noise, and whining. Took the car to the dealer and they told me it was the diff. (I had a stock diff in then) They checked the fluid and couldnt find any metal particals... But still were convinced it was the diff
I drove in the car with a mechanic, and let him hear the thumping (at pretty much all speeds now) and whining. It felt and sounded like something was seriously wrong.
On a whim, I tried tightening my axle nuts. The noise went away temporarily. ahhh... soooooo
I went back to the honda dealership (my car still has a warranty) and bought two new hubs, and told them to replace them. I said if this wasnt the problem id pay for it, but if not they should cover it under warrenty.
My driver side rear hub/bearing was toast.
Thats your problem man...
I dont exactly drive conservativly either... I track alot... and I was also at the dragon this year with ya... I was the red S with the big wing.
hope this helps, good luck man! (replace your rear hubs/bearings!)
I had a thumping noise, and whining. Took the car to the dealer and they told me it was the diff. (I had a stock diff in then) They checked the fluid and couldnt find any metal particals... But still were convinced it was the diff
I drove in the car with a mechanic, and let him hear the thumping (at pretty much all speeds now) and whining. It felt and sounded like something was seriously wrong.
On a whim, I tried tightening my axle nuts. The noise went away temporarily. ahhh... soooooo
I went back to the honda dealership (my car still has a warranty) and bought two new hubs, and told them to replace them. I said if this wasnt the problem id pay for it, but if not they should cover it under warrenty.
My driver side rear hub/bearing was toast.
Thats your problem man...
I dont exactly drive conservativly either... I track alot... and I was also at the dragon this year with ya... I was the red S with the big wing.
hope this helps, good luck man! (replace your rear hubs/bearings!)
Joined: Jun 2004
Posts: 8,463
Likes: 25
On stand by to here what it is
I hope it was not your LSD, as it was just a wine when this first started.
Driving the car after thinking you just blow your rear is not good. You can cause more damage to the differential housing and it's components. Your gears may have been fine but, driving the car led to a thumping sound and now grinding and resistance in deceleration.
If the gears are broke, there is no way to say that driving the car after the first signs of failure caused more problems than was first done.
Paying for a tow truck when it first accrued to take it home or to your mechanic is best when something like this happens.
I am guilty of this my self, I limped my car home from the track (100 miles) home. The howl or wine I had never got any worse just stayed the same.
You might have better luck than me and have something else wrong like a hub bearing.
Good luck to you
I hope it was not your LSD, as it was just a wine when this first started.
Driving the car after thinking you just blow your rear is not good. You can cause more damage to the differential housing and it's components. Your gears may have been fine but, driving the car led to a thumping sound and now grinding and resistance in deceleration.
If the gears are broke, there is no way to say that driving the car after the first signs of failure caused more problems than was first done.
Paying for a tow truck when it first accrued to take it home or to your mechanic is best when something like this happens.
I am guilty of this my self, I limped my car home from the track (100 miles) home. The howl or wine I had never got any worse just stayed the same.
You might have better luck than me and have something else wrong like a hub bearing.
Good luck to you
Thread Starter
Former Moderator
Joined: Aug 2004
Posts: 14,729
Likes: 8
Originally Posted by S2KPUDDYDAD,May 18 2007, 03:15 AM
On stand by to here what it is
I hope it was not your LSD, as it was just a wine when this first started.
Driving the car after thinking you just blow your rear is not good. You can cause more damage to the differential housing and it's components. Your gears may have been fine but, driving the car led to a thumping sound and now grinding and resistance in deceleration.
If the gears are broke, there is no way to say that driving the car after the first signs of failure caused more problems than was first done.
Paying for a tow truck when it first accrued to take it home or to your mechanic is best when something like this happens.
I am guilty of this my self, I limped my car home from the track (100 miles) home. The howl or wine I had never got any worse just stayed the same.
You might have better luck than me and have something else wrong like a hub bearing.
Good luck to you
I hope it was not your LSD, as it was just a wine when this first started.
Driving the car after thinking you just blow your rear is not good. You can cause more damage to the differential housing and it's components. Your gears may have been fine but, driving the car led to a thumping sound and now grinding and resistance in deceleration.
If the gears are broke, there is no way to say that driving the car after the first signs of failure caused more problems than was first done.
Paying for a tow truck when it first accrued to take it home or to your mechanic is best when something like this happens.
I am guilty of this my self, I limped my car home from the track (100 miles) home. The howl or wine I had never got any worse just stayed the same.
You might have better luck than me and have something else wrong like a hub bearing.
Good luck to you
Thanks!
(Love the gated shifter BTW, drool...
)
Thread Starter
Former Moderator
Joined: Aug 2004
Posts: 14,729
Likes: 8
So the quest for the answer continues.
Had diff fluid drained. Only a 2-3 very tiny (pinhead) sized pieces came out. No teeth or chunks.
Had them tighten up the axle nuts... but they were not loose (they were at the spec 180, I had them up it to the new spec 220).
Didn't make a bit of difference.
I notice that the car pulls a little left, there is a faint grinding sound, and the thumping is still there. Went around a corner and there was a little bump and the car rear hopped sideways, NOT normal.
The rear wheels were the same temp and neither was hot.
So I don't know what that means.
Still not clearly pointing either way.
Ordered bearings and hubs for both sides, will be installed 5/24/07.
If doesn't take care of it, will swap the diff for the stock one 5/25/07.
Stay tuned!
Had diff fluid drained. Only a 2-3 very tiny (pinhead) sized pieces came out. No teeth or chunks.
Had them tighten up the axle nuts... but they were not loose (they were at the spec 180, I had them up it to the new spec 220).
Didn't make a bit of difference.
I notice that the car pulls a little left, there is a faint grinding sound, and the thumping is still there. Went around a corner and there was a little bump and the car rear hopped sideways, NOT normal.
The rear wheels were the same temp and neither was hot.
So I don't know what that means.
Still not clearly pointing either way.
Ordered bearings and hubs for both sides, will be installed 5/24/07.
If doesn't take care of it, will swap the diff for the stock one 5/25/07.
Stay tuned!
