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Clutch Questions

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Greetings fellow TDR members, I have a couple of questions for you clutch experts. First of all, what exactly does the term mean " clutch slippage"? I've read a few posts whereby people have indicated their clutch is slipping; since I have a five speed in my truck I was wondering how you determine that. My second question is about the clutch release bearing ( throw-out ). I've read that, among other things, the bearing makes a noise when it's on its way out. Is anyone familiar with what type of noise that it makes? I also understand that hard shifting and grinding of gears can also be symptoms of a bad release bearing. Thanks for any comments.
 
WWalters



When your clutch is slipping your RPM's go up as you try to accelerate but the vehicles MPR do not. As for the throw out brg. when you depress the clutch you are applying pressure to the brg. If the brg. is bad it will make a squalling sound. If it happens when you let up on the clutch peddle, it is probable the front brg. of the trans or the pilot brg. both of which can cause a release problem. A worn clutch will not cause a release problem just slipping.



Peter
 
South Bend Clutch:



"When your clutch is slipping your RPM's go up as you try to accelerate but the vehicles MPR do not. "



Thanks for your response Peter. I hate to sound stupid but what does " the vehicles MPR" mean ?



Also, thanks for the info on the throw-out bearing. I have read that light pressure on the clutch causes faster release bearing wear. I suppose this would occur if someone consistently rested their foot on the clutch as they drove down the street or while their vehicle was stopped at a light.



In your opinion does releasing the clutch slowly while upshifting and/or down shifting cause accelerated release bearing wear?



Thanks,

Bill
 
peter meant mph not mpr. when i added propane the first i punched it at about 1800rpm the tach went right to 3000rpm but the truck wasn't going any faster.



jim
 
Clutch slipping,, hehe,, You Too can experiance this!!



Easy to do, but not so cheap.



Only two things needed. PE COMP and Bigger injectors.



I have Diesel Dynamic 1 injectors (55rwhp) and a "HOT" PE COMP (145HP) In 4th gear and 1,700 RPM I can push the "Smoke" pedal to the floor, and when the boost rises to over 30PSI the clutch decides it wants to turn into silly putty.

I have the stock clutch and I can hit redline in 4th and 5th and stay below 50MPH.



Another way to tell. Smoke coming from front of transmission, and the Smell. A few guys here have slipped there clutch enough to make it smoke heavy, and I have slipped it enough to make it stink for 12+ hours. I slipped it one afternoon, around lunch time, and the next day at lunch time I could still smell the clutch when standing downwind from my truck.



Time for a new clutch.



MerrickNJr
 
South Bend Clutch:



Thanks Peter - I know what MPH means; what I didn't know was what MPR meant; now I do. I notice that you like brevity in your statements - I will keep that in mind inthe future.
 
Thanks Bill,



Sorry for the confusion. I am not much of a computer guy and probably not much for spelling either. Hey, I am a clutch guy. :D



I hope I was able to help you. I will try not to use the abbreviations as much.



Peter
 
I have found that only one thing is needed to create clutch slippage. An EZ. I also have a bigger exhaust and air filter but they don't contribute much to power gains. I can slip it just by romping on it. Yes Peter, I'll be in touch at some point.
 
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