clutches - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 11 (permalink) Old 08-11-2006, 11:56 PM Thread Starter
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clutches

Okay my truck is not yet running the 500 horsepower that i intend to have but i would like to know the different style cluthes you guys use and which ones would fit my needs best. When i do the clutch i want about 500 to 550 horsepower when i do the clutch. I want a good clutch that i can shift quickly with for racing but i also want it to be suitable for light to medium slead pulling.

01 Qc Cummins 4x4 long box, edge attitude with juice (HOT!!), 4" exhaust, afe stage 2 intake, HTB2 62/12, banks intake pleum, bully dog big fuel kit, stage three jammers, southbend 3250 DD, BD Blow off valve. PDR master and slave cylinder upgrade. Sold

2006 mega cab 4x4 auto. Stock for now.
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post #2 of 11 (permalink) Old 08-12-2006, 12:40 AM
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If you are going to sledpull, go dual disk.
Enterprise Engine, South Bend, etc. Call around find someone who is good to work with. You may want to find a dealer in the area that deals with a good clutch, if you aren't going to install it yourself.

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post #3 of 11 (permalink) Old 08-12-2006, 12:50 AM Thread Starter
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Why go with a dual disk can't a heavy duty single hold it or is there something i don't know about the dual disc. I thought the dual disk was just for more holding power.

01 Qc Cummins 4x4 long box, edge attitude with juice (HOT!!), 4" exhaust, afe stage 2 intake, HTB2 62/12, banks intake pleum, bully dog big fuel kit, stage three jammers, southbend 3250 DD, BD Blow off valve. PDR master and slave cylinder upgrade. Sold

2006 mega cab 4x4 auto. Stock for now.
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post #4 of 11 (permalink) Old 08-12-2006, 01:13 AM
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the biggest single disk you can get only hold about 550hp. dual disks can hold up to 850hp. but if you are just light sled pulling, and not going about 550hp a single will be fine.

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post #5 of 11 (permalink) Old 08-12-2006, 07:46 AM
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DO NOT buy a single disc with any intentions of sled pulling on it. They will not hold up and no one will warranty them. You might get by with it a couple times, but it will loose it's ability to hold very quickly. If you are going to sled pull a dual disc is a must.
post #6 of 11 (permalink) Old 08-13-2006, 03:45 AM
 
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Dont even think about buying a single disk for sledpulling.
If a single disk is holding for pulling then your truck is way under powered and I can gaurantee your not doing that well.

The reason a dual or triple is required for pulling is that you need to be able to slip the clutch to launch. When the clutch starts to heat up there is less friction there vs when the clutch was at normal operating temp so the multiple disks help share that load and still grab once you are fulling engaged.

Double disk pulling clutches can offer weighted pressure plates and or springs that increase pressure plate load to hold big power.

Here is a double disk in action slipping until fully engaged. (notice the sparks)
A stock or single disk would not even begin to hold after this kind of abuse.
Click here to see Video
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post #7 of 11 (permalink) Old 08-14-2006, 10:10 PM Thread Starter
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Ok so i need a dual disk, but can you shift those as quickly as a single and what is the life expectancy of a dual disk if you pull often. Another thing does it feel like a stock clutch or is it going to be hard to disengage it.

01 Qc Cummins 4x4 long box, edge attitude with juice (HOT!!), 4" exhaust, afe stage 2 intake, HTB2 62/12, banks intake pleum, bully dog big fuel kit, stage three jammers, southbend 3250 DD, BD Blow off valve. PDR master and slave cylinder upgrade. Sold

2006 mega cab 4x4 auto. Stock for now.
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post #8 of 11 (permalink) Old 08-15-2006, 05:43 PM
 
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No to the first question.
The Dual disc last from about 20 pulls to 40 pulls depending on how much power and how long you slip it.
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post #9 of 11 (permalink) Old 08-15-2006, 11:16 PM Thread Starter
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Why can't you shift them as quickly as a single, and i'm really into drag racing, but i would like to try slead pulling so should i go with a big single or a dual disk.

01 Qc Cummins 4x4 long box, edge attitude with juice (HOT!!), 4" exhaust, afe stage 2 intake, HTB2 62/12, banks intake pleum, bully dog big fuel kit, stage three jammers, southbend 3250 DD, BD Blow off valve. PDR master and slave cylinder upgrade. Sold

2006 mega cab 4x4 auto. Stock for now.
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post #10 of 11 (permalink) Old 08-15-2006, 11:49 PM
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Not sure how else to put it so you completely understand. If you even think of hooking to a sled then get a dual disc. If you don't want to hook to a sled, then get a big single.

You will trash a single sled pulling. No if's, and's, or but's about it. Plain and simple, it will happen, I 100% guarantee it.

The reason you can not shift a DD as fast as a single is because you have another disc, plus a floater plate in there to get dis-engaged and then re-engaged.
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