944Hybrids: 924/944/968 and 928 V8 Conversions
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HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Clutch slipping in first

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Clutch slipping in first  Empty Clutch slipping in first

Post  jpkinerk on Thu Aug 07, 2014 2:16 pm

So the swap is finally up and running after a year and a half of wrenching! Felt great just to run it around the block. More pics and video of that to come. A couple issues to resolve though. First, with the clutch.

The clutch is slipping bad in 1st, not as much in second. I'm running LS1 flywheel, clutch disc and slave cylinder from TPC that came with the kit, LS6 pressure plate, tilton 13/16" master. The torque tube adapter plate and slave came preassembled from TPC, so I'm thinking maybe I needed to shim it?

Any ideas? Thanks!

JP
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Clutch slipping in first  Empty Re: Clutch slipping in first

Post  Arthropraxis on Thu Aug 07, 2014 7:06 pm

You need to measure for what size shim is needed. The slipping could be contaminated surfaces.
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Post  money pit 951 on Fri Aug 08, 2014 3:23 pm

It's a good way to burn out a new clutch. Take it apart and measure things - I'm guessing you left out a shim
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Post  spence on Sat Aug 09, 2014 2:28 am

I don't think he would need a shim on the throwout bearing if the clutch is already slipping. That would mean the throwout bearing is slightly riding on the pressure plate fingers and adding a shim on the bearing would only make things worse. By the sounds of it, he would need a shim on the bellhousing side to space the pressure plate / clutch assembly away from the throwout bearing. Either way, you need to take it apart and measure.
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Post  jpkinerk on Tue Aug 12, 2014 9:28 pm

Thanks for the feedback everyone. I have a two piece bell housing, is this something I can check from that perspective or are we talking about going ahead and pulling off the torque tube and really getting into it? I'm guessing that's something I'll have to do anyway to right the problem.
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Post  Raymond-P on Wed Aug 13, 2014 9:55 pm

I just went down this road in my engine build. Check out my "Mystery Plate" thread under General Mechanical. I have the whole TPC package but used a SPEC flywheel clutch and pressure plate.
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Clutch slipping in first  Empty Re: Clutch slipping in first

Post  jpkinerk on Thu Aug 14, 2014 11:22 am

Thanks Raymond. After reading through your thread, I think what Spence said makes sense. Since the clutch is slipping it appears I'd need to space the slave cylinder farther away from the pp rather than shim it closer. Regardless, looks like I'll be either spending some time with a friend under the car or pulling the motor...woof.

spence wrote:I don't think he would need a shim on the throwout bearing if the clutch is already slipping. That would mean the throwout bearing is slightly riding on the pressure plate fingers and adding a shim on the bearing would only make things worse. By the sounds of it, he would need a shim on the bellhousing side to space the pressure plate / clutch assembly away from the throwout bearing. Either way, you need to take it apart and measure.
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