Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

pilot bearing

Thread Tools
 
Search this Thread
 
Old Dec 31, 2006 | 07:44 PM
  #1  
Revelation Z28's Avatar
Thread Starter
TECH Veteran
iTrader: (10)
 
Joined: Jul 2006
Posts: 4,770
Likes: 0
From: Rialto CA
Default pilot bearing

whenever i slowly move the shifter into any gear, i will grind the gear. the hydraulics are brand new, and the centerforce clutch is a year old. im crapshooting its the pilot bearing binding up and spinning the input shaft. also im replacing the throwout bearing because it chatters and knocks. anyone else have this problem? or heard of it?

im gonna take the flywheel off, resurface it, take the pilot bearing off, and do the rear main seal while im at it. anything else i should look for?
Reply
Old Jan 1, 2007 | 01:31 PM
  #2  
wrencher's Avatar
wrencher
20 Year Member
iTrader: (2)
 
Joined: Aug 2002
Posts: 4,762
Likes: 2
From: Chicagoland
Default

It sounds like a hydraulic issue to me. Bleed out correctly?
If it grind shifting has to be a release issue somewhere.

What do you mean the T/O bearing knocks??
That might be your problem? The T/O should be new w/ the new slave cylinder.
Reply
Old Jan 3, 2007 | 02:18 PM
  #3  
Revelation Z28's Avatar
Thread Starter
TECH Veteran
iTrader: (10)
 
Joined: Jul 2006
Posts: 4,770
Likes: 0
From: Rialto CA
Default

Originally Posted by wrencher
It sounds like a hydraulic issue to me. Bleed out correctly?
If it grind shifting has to be a release issue somewhere.

What do you mean the T/O bearing knocks??
That might be your problem? The T/O should be new w/ the new slave cylinder.

the LT1 T56 has an external slave.

well when i put the clutch in, no matter how long its in, if i shift very slowly or holt the shifter 1/2 way in gear ill feel the gears and itll grind. i was thinking its the pilot bearing binding up. its been like this since i bought the car. kind of hard to get into gear (especially 2nd)

the throwout bearing makes noise you can really hear it underneath the car.
Reply
Old Jan 3, 2007 | 09:41 PM
  #4  
2000TransAmWS6's Avatar
TECH Enthusiast
iTrader: (12)
 
Joined: Sep 2004
Posts: 684
Likes: 0
From: Danville, VA
Default

man, you're pilot bearing isn't going to be worse in one gear than the others, if you have a problem with the pilot it is usually when you are holding the clutch pedal down and the engine and transmission are spinning at 2 different speeds. it seems to me that it should be doing it all the time when the clutch is disengaged.
Reply
Old Jan 4, 2007 | 12:33 AM
  #5  
got milk??'s Avatar
TECH Regular
iTrader: (18)
 
Joined: Jul 2004
Posts: 403
Likes: 1
From: VA
Default

i had a problem like that a while ago it ended up being the pilot bearing was torn apart from the install, it happens sometimes when reinstalling the tranny, when you pull it apart just expect to take it all apart because my bearing was in about 50 pieces. i hope this helps it sounds exactly like what was happening to me no matter how long or how slow u try to shift it grinds it happens in every gear too right?
Reply
Old Jan 5, 2007 | 03:37 PM
  #6  
Revelation Z28's Avatar
Thread Starter
TECH Veteran
iTrader: (10)
 
Joined: Jul 2006
Posts: 4,770
Likes: 0
From: Rialto CA
Default

yea, itll grind in any gear when the clutch is to the floor.

im just gonna take the flywheel off to take the bearing out. im doing the rear main seal too.
Reply
Old Jan 5, 2007 | 04:29 PM
  #7  
gun5l1ng3r's Avatar
TECH Fanatic
 
Joined: Mar 2004
Posts: 1,017
Likes: 0
From: Laguna Niguel, CA
Default

How can you tell if you screwed up your pilot bearing on install?

I have fairly new hydraulics and a fairly new clutch and have bled them to death. I still cannot shift into gear at high RPM's.
Reply
Old Jan 5, 2007 | 09:18 PM
  #8  
wrencher's Avatar
wrencher
20 Year Member
iTrader: (2)
 
Joined: Aug 2002
Posts: 4,762
Likes: 2
From: Chicagoland
Default

Originally Posted by Revelation Z28
the LT1 T56 has an external slave.
Didnt know what you had there, I have signatures turned off in my user settings if you had your car on it. Most here are LSx
You have a release issue, if it has been that way since you got it, sure the hydraulics are correct? Things typically dont stick to keep it from releasing in the fork/ T/O bearing area.
Your tearing the trans up on to of that driving it like that also.
Have you tried to flush the fluid on the master/ slave at least, might help it out signifigantly.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jan 5, 2007 | 09:31 PM
  #9  
Revelation Z28's Avatar
Thread Starter
TECH Veteran
iTrader: (10)
 
Joined: Jul 2006
Posts: 4,770
Likes: 0
From: Rialto CA
Default

Originally Posted by wrencher
Didnt know what you had there, I have signatures turned off in my user settings if you had your car on it. Most here are LSx
You have a release issue, if it has been that way since you got it, sure the hydraulics are correct? Things typically dont stick to keep it from releasing in the fork/ T/O bearing area.
Your tearing the trans up on to of that driving it like that also.
Have you tried to flush the fluid on the master/ slave at least, might help it out signifigantly.

my hydraulics are 4 months old... new fluid when i put the mew master and slave in. new clutch fork too from when the old owner put the clutch in. im 90% sure its the pilot bearing.
Reply




All times are GMT -5. The time now is 09:16 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE