PDA

View Full Version : TKO, unable to mount to Bell Housing

DT69Cam
08-20-2017, 04:48 PM
I just spent all day trying to install my TKO 600 to my LS3 engine. I'm using an LS "621" Bell Housing and I could not get the input shaft to line up in the Pilot Bushing for nothing. Anyone have any ideas ???
booah
08-20-2017, 05:44 PM
Just had this with a Mcleod set up, twin disc and one disc was backwards. May be the same thing.
DT69Cam
08-20-2017, 06:16 PM
Just had this with a Mcleod set up, twin disc and one disc was backwards. May be the same thing.

Thx for the reply. I'm not sure what the hell the problem is. McLeod flywheel ram clutch. I can't seat the trans to the Bell Housing. Wondering if this BH is that much out.
tubbed69
08-20-2017, 06:38 PM
Is your pilot bearing correct,not sure but I think there is a couple sizes,good luck
Sideshow
08-20-2017, 07:23 PM
if everything is correct. we draw them in with the bolts. I know your not supposed to do it that way but all the ones that we've installed over the yeas have been done that way. just go slow. never had a ear break. btw.
JKnight
08-20-2017, 09:06 PM
I guess we should start with the simple stuff. You using a clutch alignment tool? Plastic or metal? Mechanical linkage? I had to depress the clutch a bit to get the input shaft to seat properly.
DT69Cam
08-21-2017, 12:52 PM
if everything is correct. we draw them in with the bolts. I know your not supposed to do it that way but all the ones that we've installed over the yeas have been done that way. just go slow. never had a ear break. btw.

Ear broke off.
DT69Cam
08-21-2017, 12:53 PM
I guess we should start with the simple stuff. You using a clutch alignment tool? Plastic or metal? Mechanical linkage? I had to depress the clutch a bit to get the input shaft to seat properly.

Hydraulic TO bearing, Ram clutch. Plastic alignment tool.
CJD Automotive
08-21-2017, 02:05 PM
Ear broke off.

Just read through, and knew that was BAD advice!

Have you done a measurement of the OD of the input shaft and ID of the pilot bearing? Your sure the auto hub for the converter isn't still in the crank?! Have you slid the clutch on the input shaft to verify it slides easily and doesn't bind? For high rev or fast shift applications, before I install a unit, I usually apply a little valve lapping compound on the input spline of the transmission and then work the clutch back and forth to ensure it rides freely with no burs or nicks you can't see. Clean all of the compound off before reassembly.
DT69Cam
08-21-2017, 05:06 PM
Just read through, and knew that was BAD advice!

Have you done a measurement of the OD of the input shaft and ID of the pilot bearing? Your sure the auto hub for the converter isn't still in the crank?! Have you slid the clutch on the input shaft to verify it slides easily and doesn't bind? For high rev or fast shift applications, before I install a unit, I usually apply a little valve lapping compound on the input spline of the transmission and then work the clutch back and forth to ensure it rides freely with no burs or nicks you can't see. Clean all of the compound off before reassembly.

Thanks for the reply. Pilot bushing appears to be correct. Auto hub ? This is a brand new LS3. Oh boy, I never noticed an auto hub ?? I just installed the pilot bushing after removing the flexplate.
JKnight
08-21-2017, 07:08 PM
Hydraulic TO bearing, Ram clutch. Plastic alignment tool.

I made a plastic one work fine, but if all else fails, some people have had to acquire a metal one to get it just right. If your hydraulics are set up, I'd try pushing the clutch a little. I had similar issue and that solved it for me on the first try.
DWCamaro69
08-22-2017, 01:24 PM
Fought mine for hours. Pushing in the clutch a little seemed like it might have been the key. Good luck.
Vegas69
08-22-2017, 07:12 PM
The Tko's fight you because they belong in a school bus, not a performance car.

Sorry, I couldn't resist.
gnx7
08-30-2017, 08:56 PM
Sorry to hear about your troubles....

For others looking into this transmission.... A TKO600 shifts like garbage and doesn't like to be shifted at high RPMs. To those on the fence.... save your money and buy a T56 Magnum and never look back.
DT69Cam
08-31-2017, 01:21 PM
Sorry to hear about your troubles....

For others looking into this transmission.... A TKO600 shifts like garbage and doesn't like to be shifted at high RPMs. To those on the fence.... save your money and buy a T56 Magnum and never look back.

I have upgraded synchros and this TKO shifted like butter in my other car.