Do I sense a vibration?
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 837
Likes: 2
From: Derry NH
Do I sense a vibration?
Yes, I think I do.
After my clutch was installed I noticed that the pilot bearing I supplied was still sealed in the bag. (I noticed a few hours too late and it was 11 pm so I went home) Anyway, I think i feel a small driveline vibration when I accelerate. To tie this all together I had a noise when engaging the clutch for a 100 miles or so that I recorded and posted and someone thought might be a bad pilot bearing.
Anyway, I am just being silly and looking for a problem or does this actually sound like a problem that may occure do to not changing a pilot bearing??? I almost always drive with my right hand on the shifter (Hurst, which are known to have rattle issues anyway) so maybe I am just misinterpreting things.
(Casem1's car is finally running the way he wants it so he is expecting there to be a problem SOMEWHERE)
After my clutch was installed I noticed that the pilot bearing I supplied was still sealed in the bag. (I noticed a few hours too late and it was 11 pm so I went home) Anyway, I think i feel a small driveline vibration when I accelerate. To tie this all together I had a noise when engaging the clutch for a 100 miles or so that I recorded and posted and someone thought might be a bad pilot bearing.
Anyway, I am just being silly and looking for a problem or does this actually sound like a problem that may occure do to not changing a pilot bearing??? I almost always drive with my right hand on the shifter (Hurst, which are known to have rattle issues anyway) so maybe I am just misinterpreting things.
(Casem1's car is finally running the way he wants it so he is expecting there to be a problem SOMEWHERE)
Drifting
Joined: Dec 2005
Posts: 1,720
Likes: 3
From: East Hampton CT
Originally Posted by Casem1
Yes, I think I do.
After my clutch was installed I noticed that the pilot bearing I supplied was still sealed in the bag. (I noticed a few hours too late and it was 11 pm so I went home) Anyway, I think i feel a small driveline vibration when I accelerate. To tie this all together I had a noise when engaging the clutch for a 100 miles or so that I recorded and posted and someone thought might be a bad pilot bearing.
Anyway, I am just being silly and looking for a problem or does this actually sound like a problem that may occure do to not changing a pilot bearing???
After my clutch was installed I noticed that the pilot bearing I supplied was still sealed in the bag. (I noticed a few hours too late and it was 11 pm so I went home) Anyway, I think i feel a small driveline vibration when I accelerate. To tie this all together I had a noise when engaging the clutch for a 100 miles or so that I recorded and posted and someone thought might be a bad pilot bearing.
Anyway, I am just being silly and looking for a problem or does this actually sound like a problem that may occure do to not changing a pilot bearing???
Same for your throwout bearing...it is only being "used" when your foot is on the clutch.
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 837
Likes: 2
From: Derry NH
Originally Posted by Billdog350
Just to give you a quick explaination of a normal automotive clutch. The pilot bearing/bushing is installed in the end of your crankshaft (engine). The input shaft from your transmission inserts into the pilot bearing. The ONLY time your pilot bearing is "working" is when your clutch is depressed AND the engine and transmission input shaft are spinning at different speeds. When your foot is off the clutch and you're accelerating, decelerating, or keeping a constant speed....your pilot bearing is not moving at all since the crank is physically connected and insync with your input shaft via the flywheel/clutch/pressure plate.
Same for your throwout bearing...it is only being "used" when your foot is on the clutch.
Same for your throwout bearing...it is only being "used" when your foot is on the clutch.
But if the pilot bearing is busted, couldn't the clutch/flywheel/pressure plate be engage slightly off balance since the input shaft is free to move around slightly???
Drifting
Joined: Dec 2005
Posts: 1,720
Likes: 3
From: East Hampton CT
Your input shaft bearing should be keeping that aligned. If there is enough play for your clutch disk to be slightly out of center, then you have an INPUT SHAFT bearing issue...which WOULD vibrate under acceleration. Often pilot bearings go and will take out your input shaft bearing, like you indicate.
Push in your clutch with the car in gear, does it make noise? Now rev it slightly with clutch in, does it move the car? Lastly, put it in neutral with your clutch in, rev it a little and try to put it back in gear. If your pilot bearing is going bad and dragging slightly, it will spin your input shaft and make it hard to get back in gear.
Push in your clutch with the car in gear, does it make noise? Now rev it slightly with clutch in, does it move the car? Lastly, put it in neutral with your clutch in, rev it a little and try to put it back in gear. If your pilot bearing is going bad and dragging slightly, it will spin your input shaft and make it hard to get back in gear.
Le Mans Master
Joined: Sep 2003
Posts: 6,275
Likes: 226
From: Farmington CT
Cruise-In VII Veteran
they may have 'hacked' your pilot bearing during the install; I've seen some posts here with C-clamps used to get the Torque tube installed(not good); my uncle spun an install tool using the ID of the input shaft on the TT, often the supplied plastic alignment tools don't get the disc close enough for the TT to align properly
if you take the input shaft on the TT while is removed from the car, you will notice quite a bit of movement from the rubber bushings/couplers
why is the $10 pilot bearing still in the bag? I don't know, I can tell some of those are a real pita to get out of the crank
VARIABLE #2, clutch zero balanced?
if you take the input shaft on the TT while is removed from the car, you will notice quite a bit of movement from the rubber bushings/couplers
why is the $10 pilot bearing still in the bag? I don't know, I can tell some of those are a real pita to get out of the crank
VARIABLE #2, clutch zero balanced?
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Drifting
Joined: Dec 2005
Posts: 1,720
Likes: 3
From: East Hampton CT
Removal of the pilot bearing is pretty easy with a wooden dowel that's the same OD as the ID of your bearing/bushing. Then pack grease or wet toilet paper behind the dowel, hammer on the dowel, and then repeat. The hydraulic pressure forces the bearing out EVERY time. Works much better than those stupid slide hammer POS that always mangle the bearing and force you to take it out piece by piece.
Le Mans Master
Joined: Sep 2003
Posts: 6,275
Likes: 226
From: Farmington CT
Cruise-In VII Veteran
Originally Posted by Billdog350
Removal of the pilot bearing is pretty easy with a wooden dowel that's the same OD as the ID of your bearing/bushing. Then pack grease or wet toilet paper behind the dowel, hammer on the dowel, and then repeat. The hydraulic pressure forces the bearing out EVERY time. Works much better than those stupid slide hammer POS that always mangle the bearing and force you to take it out piece by piece.
Le Mans Master
Joined: Sep 2003
Posts: 6,275
Likes: 226
From: Farmington CT
Cruise-In VII Veteran
there is a plug that sits forward of the pilot bearing, using the 'ole school method will likely push this plug forward, there is also a warning the shop manual
your right about the puller, takes a few passes before it actually grabs the bearing
your right about the puller, takes a few passes before it actually grabs the bearing
