Re: strange flywheel/pressure plate wear
[Re: 426runner]
#2058401
04/20/16 02:41 PM
04/20/16 02:41 PM
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Joined: Dec 2014
Posts: 5,924 ohio
ruderunner
master
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master
Joined: Dec 2014
Posts: 5,924
ohio
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I'd take a close look at the lever in the center of that wear. Bet you find a cracked lever or the pressure plate is cracked near it.
Angry white pureblood male
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Re: strange flywheel/pressure plate wear
[Re: 426runner]
#2058545
04/20/16 05:59 PM
04/20/16 05:59 PM
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Joined: Aug 2003
Posts: 43,285 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,285
Bend,OR USA
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Is the clutch disc a race disc or street and strip? The race disc don't slip very much, just like thier designed to do That being said it may have to much pressure plate pressure for your application also to drive nice on the street Good luck Let us know what you find and do to fix it
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: strange flywheel/pressure plate wear
[Re: 426runner]
#2058595
04/20/16 07:56 PM
04/20/16 07:56 PM
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Joined: Jan 2003
Posts: 28,069 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,069
Irving, TX
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The problem is only on one side of the plate. I would imagine it was a loose bolt or a problem with the PP.
A bolt broke on my PP several years ago. It caused similar symptoms and wear.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: strange flywheel/pressure plate wear
[Re: 426runner]
#2058613
04/20/16 08:19 PM
04/20/16 08:19 PM
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Joined: Dec 2014
Posts: 5,924 ohio
ruderunner
master
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master
Joined: Dec 2014
Posts: 5,924
ohio
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I've seen a few cracked B&B pressure plates. That's why I mentioned it.
Usual symptoms include poor or no release. The hot spots on the pressure plate and flywheel tell which is suspect.
Angry white pureblood male
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Re: strange flywheel/pressure plate wear
[Re: ruderunner]
#2058964
04/21/16 01:14 PM
04/21/16 01:14 PM
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Joined: Dec 2003
Posts: 4,952 northwest USA
NANKET
master
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master
Joined: Dec 2003
Posts: 4,952
northwest USA
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I'd take a close look at the lever in the center of that wear. Bet you find a cracked lever or the pressure plate is cracked near it. Yes, right In the center of the spots is that lever. Could be anything mentioned, broken bolt, something cracked, bad/weak spring, pivot worn, heights not equal.
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Re: strange flywheel/pressure plate wear
[Re: 426runner]
#2059294
04/21/16 09:47 PM
04/21/16 09:47 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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Grind the flywheel. It is more than serviceable.
Normally when you see what you have, the finger height is off. What happens is as you push the levers down, one or possibly two of them are low to start with. The low finger or fingers do not let the disc get a gap from the flywheel.
See it all the time. It could also be a cracked cover or lever, but the result is the same. No need to replace a bunch of parts that are still more than good enough.
FWIW I never ever install a pressure plate without checking finger height. Should be done because humans make mistakes.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: strange flywheel/pressure plate wear
[Re: moparx]
#2059369
04/21/16 11:39 PM
04/21/16 11:39 PM
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Joined: Jan 2003
Posts: 15,489 Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,489
Omaha Ne
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Re: strange flywheel/pressure plate wear
[Re: TJP]
#2059858
04/22/16 06:27 PM
04/22/16 06:27 PM
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Joined: Jun 2005
Posts: 368 Jacksonville, Fl
426runner
OP
enthusiast
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OP
enthusiast
Joined: Jun 2005
Posts: 368
Jacksonville, Fl
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The whole setup is being replaced. McLeod flywheel and dual disc package. Thanks for the great input. The flywheel I already sold... the PP is long gone. I blamed everything on it from the get-go.
Later, Sandy
'70 HEMI Road Runner B5/B5, 4 spd
"Sandy's Garage" on Facebook
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Re: strange flywheel/pressure plate wear
[Re: ThermoQuad]
#2060718
04/24/16 11:28 AM
04/24/16 11:28 AM
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Joined: Sep 2003
Posts: 19,589 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,589
north of coder
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You all missed the mark on this one. It's the basics of manual transmission. If you guys were real technical support people you all would have pink slips.
Before installing new parts the bell housing needs to be inspected for cracks and checked for run-out and squareness while bolted to the block and all fasteners torqued to spec. well, i'm not caring if i get a pink slip or not [i'm retired], but just how many transmission assemblies [clutch, pressure plate, bellhousings] were dialed in to be true at the original assembly plant ? now you are correct the parts in question need to be inspected for cracks, burrs on mounting surfaces, bolt torque, etc. but over the years i have ran into problems with clutch discs and flywheel/pressure plate chattering. in all but a couple instances, the only way the problem was fixed was replacement of clutch parts. no dial-in of the bell was done. i am very well aware of the importance of the dial in process and the need for parallelism of the mounting surfaces, but there are more cars out there running just fine without those checks being done than those that have. when replacing parts these days however, care must be taken to insure there are no burrs on mating surfaces, and things such as pressure plate fingers are even heights and throwout bearing flanges are not dinked up. aftermarket bells need special attention. back in my day, however, replacement parts were of better quality than those available today. the OP asked for advice and all i could give is what i have ran into in over 50+ years of playing with these things. i make no claims about me being the only "super genius" in the land and a person should not listen to anyone else's experiences or expertise. you have valid points, and one could and should check these things. but to have us all "fired" because we state our life experiences is just a little course. it just kinda rubbed me the wrong way. i apologize if i have offended you.
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Re: strange flywheel/pressure plate wear
[Re: NANKET]
#2060786
04/24/16 01:22 PM
04/24/16 01:22 PM
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Joined: Dec 2003
Posts: 4,952 northwest USA
NANKET
master
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master
Joined: Dec 2003
Posts: 4,952
northwest USA
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I'd take a close look at the lever in the center of that wear. Bet you find a cracked lever or the pressure plate is cracked near it. Yes, right In the center of the spots is that lever. Could be anything mentioned, broken bolt, something cracked, bad/weak spring, pivot worn, heights not equal. OK pink slip, what are the last three words in my post above??? Thanks for your deception!
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Re: strange flywheel/pressure plate wear
[Re: 426runner]
#2060997
04/24/16 08:39 PM
04/24/16 08:39 PM
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Joined: Dec 2014
Posts: 5,924 ohio
ruderunner
master
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master
Joined: Dec 2014
Posts: 5,924
ohio
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Yep, off center bell or not parallel would cause oodd wear ALL AROUND the flywheel. Just basic physics.
This is extremely localized wear.
Angry white pureblood male
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