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Does YOUR Clutch Setup need a Shim?

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Old 11-28-2016, 05:12 PM
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I'm in the processs of measuring If shims are needed with my lt1-s now. Measurement A from different locations of the pressure plate fingers I get anywhere from 2.147-2.168. Which should I go with when i subtract from B. I'm thinking lower measurement since that would be the finger closer the bearing/slave. I called monster and whom ever I spoke with said the higher number 2.168
Old 11-28-2016, 07:31 PM
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I use the lowest number - closest to the slave
Old 11-29-2016, 05:04 PM
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Originally Posted by Darth_V8r
I use the lowest number - closest to the slave
thanks that what I was thinking. I'll have to measure slave to see if their is a difference. Went to mount slave and found one bolt was crossed. Gonna have to put a time sert
Old 02-26-2017, 11:44 AM
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Having the same concerns as Eiyse98ls1. Setup: 06 GTO LS2 and matching T56. Putting in a Monster Stage 2 setup, including 18 lb. flywheel.

Trying to get valid measurements to check for shims. Monster calls for a bearing clearance of 0.0625-0.200 from here. I was able to eliminate play in the TO and get a solid reading by clamping the straight edge like so:



B = 1.950 on each side

The engine side is more problematic. I am getting 2.318 to 2.353 depending on what finger of the PP I measure and from what point of the BH. I clamped the caliper to eliminate human error but the range is still 0.035.





All of the measurements I took:

2.318
2.321
2.327
2.344
2.353

So I have the wide range of 0.035 from shortest to longest yielding a bearing clearance range of:

A-B = 0.368 to 0.403

I would I assume I want to land in the middle of the range since I have a 0.035 variance in my readings and unless I get a custom shim made you only have 7 thicknesses to work from.. sound right?

Monster's Recommendation is bearing clearance of 0.0625 to 0.200.
Based of Tick's 3 shims, using:
55 + 180 shims = 0.235 thick, yields bearing clearance of 0.133 to 0.168.
113 + 180 shims = 0.293 thick, yields bearing clearance of 0.075 to 0.110.

I feel like the 55+180 is right for me, solidly in the middle.

Comments, anyone??? Sound right?
Old 05-12-2017, 08:42 PM
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Default Doesn't seem right.

Replacing my clutch and hydraulics. Measuring for a shim on a new oem slave,but this is as far as I can get it to push in with the spring off. Do you have to force it in to go further or is this maybe a busted slave?
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Old 05-14-2017, 01:43 AM
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Originally Posted by Datfoolgoat
Replacing my clutch and hydraulics. Measuring for a shim on a new oem slave,but this is as far as I can get it to push in with the spring off. Do you have to force it in to go further or is this maybe a busted slave?
I have experience with 2 different slave cylinders: the GM OEM T56 slave and an Autozone Duralast (FTE Branded) slave cylinder. The GM OEM slave with the spring removed still had .25" gap when fully depressed with the spring removed. The Autozone Duralast completely bottomed out with the spring removed.

Regardless, it doesnt matter. If you follow the correct method for measuring a slave shim it should take into account the differences between various slaves. Do not use any amount of excessive force to make a slave cylinder "bottom out" with the spring removed.
Old 05-14-2017, 03:48 PM
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Thanks a lot for the info gongshow. Thats good news cause it's a gm oem slave.
Old 05-25-2017, 02:18 AM
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I have bad problem with my slave clearance.
A=2.12
B=2.24
So cap is -0.12!
Car is C5 with spec twin clutch.
Clutch actuator is GM 24264180. I measure two GM slave and both have 2.24.
I didint find any thinner clutch actuators. I buy clutch used and its look fine.
I have K1 crank and was thinking, can crank be longer?
Old 05-26-2017, 03:32 AM
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Problem solved.
This clutch was everything else than like new like seller say.
I ask from spec new plates thicknes, they are 8.89mm, this clutch plates was 8.2mm and 8.4mm. Thats why clutch fingers to bellhouse was 54mm and not 60mm like its should be. So clutch is worn and cant be work right when it was used last time.
Old 05-27-2017, 07:00 PM
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Update. My LT1-S didn't need a shim. We'll see how it goes as I drive it more.
Old 06-25-2017, 01:34 AM
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I have a McLeod RST dual plate clutch with a Fidanza aluminum flywheel, T56 Magnum, and stock slave cyl. Measurements I got were:

A= 2.264
B= 1.937

A-B = 0.327

This is obviously way over 1/8" and even over 1/5". I sent an email to McLeod just now, as I have heard that they should not be used with a shim, but I am not sure. We will see what they say. Anyone with any experience with McLeod dual plate clutches want to weigh in?
Old 06-30-2017, 10:29 PM
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Well, I talked to McLeod over the phone, and they say that's plenty of travel. No shim necessary. The slave has about an inch of travel, and it only needs about 3/4" of that to release the RST clutch, so I am in good shape (in case anyone else has the same issue).
Old 01-11-2018, 09:05 PM
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Hi.

Would these shims work for a NVG4500? 2004 Silverado 2500 5 speed manual.
Old 02-22-2018, 09:43 PM
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Did you ever get this sorted out? Im in the same boat, same exact setup.

- 06 GTO, Monster stage 2, 18 lb flywheel, included slave(AP), 0.406" difference from A to B


Originally Posted by Wallyman
Having the same concerns as Eiyse98ls1. Setup: 06 GTO LS2 and matching T56. Putting in a Monster Stage 2 setup, including 18 lb. flywheel.

Trying to get valid measurements to check for shims. Monster calls for a bearing clearance of 0.0625-0.200 from here. I was able to eliminate play in the TO and get a solid reading by clamping the straight edge like so:



So I have the wide range of 0.035 from shortest to longest yielding a bearing clearance range of:

A-B = 0.368 to 0.403
Old 09-16-2018, 01:36 PM
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Installing monster s3 on a mcleod bellhousing. I have ticks shim package and if I use two biggest shims it puts me at .163". However, if I use two shims I loose the alignment of the slave. I tried centering but when I use the caliper it's off.

What's the proposed course of action? Get it as close as possible?
Old 12-09-2019, 12:48 PM
  #236  
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How can I do this with a TR6060 integral bellhousing?

Last edited by Chevyota; 12-09-2019 at 01:53 PM.
Old 06-23-2020, 05:21 PM
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This process sounds like its VERY EASY to make a mistake measuring. Why dont you guys just use the modelling clay method we have been using for DECADES to check piston to valve clearance?!?!?!?
Old 10-25-2020, 11:58 PM
  #238  
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Default Shim Help

Hey guys I am purchasing a monster clutch level 2 for my 2000 Camaro SS, if I’m not mistaken it comes with the slave cylinder/throwout bearing and pilot bearing, does anyone know if it comes with the appropriate shim or what would be the appropriate shim size. My clutch isn’t disengaging the car won’t go in gear, I replace the slave cylinder on there and the master cylinder and bled it properly, with the help of someone on this form I was able to determine that neither one of them are the problem the clutch is the problem, thanks in advance for any info or advice
Old 11-02-2020, 11:03 PM
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Default Shim question

Hey guys new to ls1 form not sure if I’m posting in the right place i’m going to purchase a monster level 2 clutch for my 2000 camaro ss, And if I’m not mistaken I believe it comes with the slave cylinder/throwout bearing and the pilot bearing, does anyone know if it comes with the appropriate size shim or if not what would be the appropriate size shim. My clutch isn’t disengaging properly I have replace the slave cylinder and also the master cylinder and Bled it properly, With the help of someone from the form I was able to determine that neither one was the problem that it is the clutch thanks for any info or advice
Old 11-03-2020, 10:01 AM
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Originally Posted by 00_ss_slp
Hey guys new to ls1 form not sure if I’m posting in the right place i’m going to purchase a monster level 2 clutch for my 2000 camaro ss, And if I’m not mistaken I believe it comes with the slave cylinder/throwout bearing and the pilot bearing, does anyone know if it comes with the appropriate size shim or if not what would be the appropriate size shim. My clutch isn’t disengaging properly I have replace the slave cylinder and also the master cylinder and Bled it properly, With the help of someone from the form I was able to determine that neither one was the problem that it is the clutch thanks for any info or advice
This is an old thread, I would start a new one, you will likely get more replies.



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