hans14914

I am trying to get my GTS-4 on the road. After a couple days last weekend, it now has a an 88 engine installed, 88 torque tube/shifter, 88 bell housing/guide tube. and the GTS trans. I have a couple clutch cores here, and sent one out to be rebuilt.

I believe one of my cores is original to the GTS, it assembled with the clutch release arm, but its really rusty and would need a good cleanup. When we disassembled the 88 donor car, we found some of the retaining bits for the throw-out bearing wedged between the starter bracket and flywheel.... so despite it being a running driving car prior to its demise, I think that TO bearing may be shot.

So, If I want to replace the TO bearing, what all do I need? I have heard that with the new bearings you have to replace the guide tube and arm.

Any advised methods to test the current TO bearing to see if its still ok, allowing me to reuse the original arm and guide tube?

Thanks
Hans

ROG100

In theory you will need the arm and the guide tube. I think Colin (Lizard) has been able to modify the new release bearing to fit the old arm and save $$$$. You could also press the new bearing out and put it in the old case - maybe.

As fas as testing the old - just spin it and look and feel for wear/movement.

SeanR

You modify the arm so the new RB can be used, done it a few times. If I remember the new RB is sloped on the mating edge and the old arm has tabs that need to be shaved off flush.

Lizard928

order the new TOB (which is now GTS), then take the old one, take the bearing out of the new one, and install in the guts of the old. Then you dont need a new release arm/guide tube.

worf928

Or use the release arm and tube from the GTS assembly with the new bearing in the '88 pressure plate.

Kevin in Atlanta

Do you have any pictures of what you did?

-Kevin

Rob Edwards

Old (-07) GT release arm, rear face:



Old GT release arm, front face. Note the flush surface, though there's a littl concentric wear on that face as well....



On edge:




New GTS (-09) release arm, rear face:




New GTS release arm, front face:




GTS release bearing, new:



GTS release bearing TSB, and the requirement to use a GTS guide tube with it:



GTS release bearing assembly on a GTS (-09) arm:



Rear face of GTS release bearing in the PP, showing groove for the circlip:

Kevin in Atlanta

I pulled an 07 release fork from my parts heap and gave it a look. I think I am going to transfer the GTS bearing to 87 TOB so I can keep the 07 release arm.