LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Experts Please Help Diagnose

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Old Mar 20, 2004 | 03:48 PM
  #1  
ponyackn's Avatar
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From: Sac to SoCal
Experts Please Help Diagnose

I don't know if this belongs in tech or drivetrain but here goes:

--Summer 2003 I had the t56 tranny rebuilt with a Mcleod Street Twin and steel fw installed. Everything seemed fine no problems with driving or noises.

--Fall 2003 after about 3k miles on new setup, I moved to Socal (drive ~400mi) no problems. I do however, have an annoying oil leak, which appears to be an oil pan gasket leak.

--November 2003 I drive back up to Sac (~400mi) and lose a lot of oil from the leak. I replace the oil, but plan to fix the leak at a later date.

On the drive back to Irvine (again, ~400mi) I get a horrible grinding as I drive and try to shift. I made it all the way home but the noise was just horrendous. I really had to work to get the shifts in and had to bear with the loud grinding noise.

--January 2004 I take my car to the mechanic, thinking that I had a rear main seal leak. The mech drops the tranny and says it is not leaking. The clutch disks are just fine, but the center hub of the plates is messed up. He said the disk plate hub had play over the input shaft. Basically, the hub was machined wrong by Mcleod's hub maker and it also tore up my input shaft. I had both replaced with a good hub.

There is still a slight grind as I take the car home, the mech tells me the plates are probably just wearing in and it will probably get better.

--February 2004 The horrible grind is back. I decide to adjust my adjustable master cylinder. By adjusting the pedal to ~3" off the floor the noise was much more avoidable, and the car's idle felt crisp and lower. But still present every so often, plus I don't feel comfortable with the pedal being unnaturally low.

-- March 2004 I start to get a bad lurching/jerking of the car in low rpm in reverse or 1st gear. Checked connection of plugs and wires and for arching, nothing major. Now I really believe it's clutch related. A board member advises me to check the clutch fork for grinding on the PP.

--Today, March 20, 2004 I separate the tranny and bellhousing and look at the fork. I don't see any signs of grinding nor is the fork's bolt loose.

What do I do now??

I know this is long and I thank everyone for reading it. Please give me any ideas or similar experiences.

Daniel
Old Mar 21, 2004 | 02:27 AM
  #2  
ponyackn's Avatar
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From: Sac to SoCal
Help guys and gals. I'm hoping to get the car back together w/o having another shop rape my wallet without knowing any better than myself.
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