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Engine/Transmission (1994 - 1998) Stock luk clutch OK for stock Cummins/NV5600?

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I have been gathering the parts needed to do a 6-speed conversion on my '96 Ram. I already have an '03 NV5600, shifter handle (no knob), and the factory flywheel. These came from a very low-mile wrecked truck and the flywheel looks brand new.



I have recently found a stock LUK clutch (disc, pressure plate, throwout bearing) with @ 2k miles on it. It also looks brand new and was swapped out by the owner who went for 600+ HP on his Cummins after gently breaking his motor in with the stock clutch and wanted something more heavy duty to handle the planned power increase.



My engine is stock and has @ 146k on it. I may one day find the excuse and money to crank up the power on my Cummins, but frankly, it isn't high on my priority list right now. My sons' motocross racing and our '69 Camaro project car requires all of my "High Performance cash" right now, and I'm OK with that. I am mostly after reliability and fuel economy from my pickup and don't do excessively heavy towing or hauling and don't live in the mountains.



As a professional truck driver, my idea of "heavy hauling" may differ from other folks', though. I work my truck, but no harder than I ever did my trusty old Chevy K-30 with it's 454. I have found the stock Cummins 12V motor adequate if unexciting power-wise. I am doing the 6-speed conversion because I have already had my 5th gear nut replaced in my 5-speed and because I think the Cummins needs that extra gear to improve driveability.



Given a limited budget and an experienced, professional level of clutching skill, is there any reason to avoid a stock-type LUK clutch? I can get the clutch assembly for $180. That is a major savings from any clutch deal I have yet found, and I can use some of that savings to pay for the other components, such as a 6-speed crossmember, that I still need.



The clutch is so new and unabused, it still has printing on the facing and the pressure plate machining marks are perfect. It would be difficult to tell it from a new-in-the-box clutch. I have had no issues with the stock clutch that has been in my truck for 146k; just the 5-speed.



Your opinions and experience on what I would be getting for my $180 would be most appreciated.
 
Too bad you're not closer, I'd GIVE you mine which is pretty much the same as the one you describe! Mine gave signs of slipping after installing the Comp, and in towing our 5th wheel - was never a problem without the Comp, and yours won't be either as long as you keep your engine stock and don't abuse the clutch.



Good luck!



Or maybe "good LUK!" :-laf
 
Inspection points

SRath,



The LuK clutch was OE on the 5600, if it is in good condition, you can save some bucks. A few ideas and inspection points.



1. Assemble it on a flywheel on the bench first, just like normal. Then use a hydraulic press or threaded rod as a release system to check to see if it releases BEFORE installing it. Stroke it about 5/8" several times, then look for the disc to release.



2. NO CONTAMINATION! anything that has been laying around has a chance to get dirty and contaminated.



3. Clean the spline in the hub.



4. Check the disc to see if it is flat on the F/W.



5. Use the correct length bolts to mount it,(Clutch) the bolts for the 6 speed are shorter and have a shoulder make sure they seat down far enough.



Good luck.
 
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