HELP!!! New scattershield problem.....
04-12-2014, 04:59 PM
#1
Le Mans Master
Thread Starter
HELP!!! New scattershield problem.....
I have run a Lakewood scattershield for , about 43 years. I have recently fitted a new scattershield. That is the ONLY change that I made. HOWEVER, I now have a badly slipping clutch! Any comments, ideas or disparaging remarks are welcome
Last edited by 63Corvette; 04-13-2014 at 11:43 AM.
04-12-2014, 05:55 PM
#2
Race Director
Did you use the "block saver plate"????
Did you set-up the pivot stud correctly????
Did you remove the clutch pressure plate, flywheel when servicing the bellhousing...and "possible" block saver plate???
DID you inspect the clutch when servicing the bellhousing???? If removed.
Is the throw-out bearing releasing??
Do you have any problems in getting it into gear???
Was any types of lubricant sprayed at any time during this process??? Where it could have gotten on the flywheel surface ...IF it was exposed.
It makes no sense that just replacing a bellhousing would cause the clutch to slip. I could deal with not engaging into gear or other issues...but not slipping. Because if the throw-out bearing is releasing and the clutch fork has free-play in it ...the pressure plate should be holding the clutch disc as designed.
Because you are using ANOTHER aftermarket bellhousing...I hope you checked your bore concentricity of the bellhousing. This is often times overlooked or not done by people who feel that "it is good enough"...but when a dial indicator is installed and it is checked...I have seen many times when the center bore is out .020"+...which is WAY OUT...and clutch/transmission issues can occur.
DUB
04-12-2014, 08:31 PM
#3
Le Mans Master
Thread Starter
Questions:
Did you use the "block saver plate"???? No
Did you set-up the pivot stud correctly???? Yes? same as before?
Did you remove the clutch pressure plate, flywheel when servicing the bellhousing...and "possible" block saver plate??? NO!
DID you inspect the clutch when servicing the bellhousing???? If removed. No....N/A
Is the throw-out bearing releasing?? Yes
Do you have any problems in getting it into gear??? NO
Was any types of lubricant sprayed at any time during this process??? Where it could have gotten on the flywheel surface ...IF it was exposed.
No
It makes no sense that just replacing a bellhousing would cause the clutch to slip. I could deal with not engaging into gear or other issues...but not slipping. Because if the throw-out bearing is releasing and the clutch fork has free-play in it ...the pressure plate should be holding the clutch disc as designed. I agree!!!
Because you are using ANOTHER aftermarket bellhousing...I hope you checked your bore concentricity of the bellhousing. YES This is often times overlooked or not done by people who feel that "it is good enough"...but when a dial indicator is installed and it is checked...I have seen many times when the center bore is out .020"+...which is WAY OUT...and clutch/transmission issues can occur.
DUB
Did you use the "block saver plate"???? No
Did you set-up the pivot stud correctly???? Yes? same as before?
Did you remove the clutch pressure plate, flywheel when servicing the bellhousing...and "possible" block saver plate??? NO!
DID you inspect the clutch when servicing the bellhousing???? If removed. No....N/A
Is the throw-out bearing releasing?? Yes
Do you have any problems in getting it into gear??? NO
Was any types of lubricant sprayed at any time during this process??? Where it could have gotten on the flywheel surface ...IF it was exposed.
No
It makes no sense that just replacing a bellhousing would cause the clutch to slip. I could deal with not engaging into gear or other issues...but not slipping. Because if the throw-out bearing is releasing and the clutch fork has free-play in it ...the pressure plate should be holding the clutch disc as designed. I agree!!!
Because you are using ANOTHER aftermarket bellhousing...I hope you checked your bore concentricity of the bellhousing. YES This is often times overlooked or not done by people who feel that "it is good enough"...but when a dial indicator is installed and it is checked...I have seen many times when the center bore is out .020"+...which is WAY OUT...and clutch/transmission issues can occur.
DUB
04-12-2014, 08:42 PM
#4
Race Director
THANK YOU FOR RESPONDING to my questions in an intelligent manner....so many people do not. Thanks
It makes NO SENSE...that if it worked before....why it would not work now.
MAN OH MAN... I know if it were a problem that I encountered at work...I would be freaking out.
How long has the clutch been in there?
I am sure that when the transmission was being installed...it WAS NOT allowed to hang on the clutch disc at all while the transmission was sliding into the pilot bushing...right??
Just does not make sense.
DUB
It makes NO SENSE...that if it worked before....why it would not work now.
MAN OH MAN... I know if it were a problem that I encountered at work...I would be freaking out.
How long has the clutch been in there?
I am sure that when the transmission was being installed...it WAS NOT allowed to hang on the clutch disc at all while the transmission was sliding into the pilot bushing...right??
Just does not make sense.
DUB
04-12-2014, 08:48 PM
#5
Team Owner
Would the 'clutch fork' make any difference if used on stock vs scatter shield?
04-12-2014, 10:09 PM
#6
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Interesting problem, Garrett.
Is it safe to assume you've got some free play in the clutch pedal when it is at the top of its travel?
If so, then what are the odds that this is just "one of those things".... i.e. the clutch would have begun slipping anyway and it just happened to coincide with the install of the new scattershield. Does the clutch have a lot of track time on it?
Jim
Is it safe to assume you've got some free play in the clutch pedal when it is at the top of its travel?
If so, then what are the odds that this is just "one of those things".... i.e. the clutch would have begun slipping anyway and it just happened to coincide with the install of the new scattershield. Does the clutch have a lot of track time on it?
Jim
04-12-2014, 10:10 PM
#7
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04-12-2014, 10:28 PM
#8
Le Mans Master
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St. Jude Donor '12
I have no idea if it would cause a slipping problem- it didn't with mine, but when I put the Lakewood housing behind my drag motor (287 Reher-Morrison modified production motor), I didn't run the block plate. Heii, I don't need no block plate, I've got billet everything in it. Uuh no. They hydoformed the scattershield overlength by the thickness of the block plate. I wiped the rear main thrust and by sheer chance, caught it before the flywheel bolts caught on the back of the block. One crank and set of bearings later, all was good. Then I put the block plate in. Just sayin.........
04-13-2014, 12:08 AM
#9
Team Owner
Was there a block plate on previously?
Too bad both units weren't layed on the ground together and a straight edge level on a flat garage wasn't done. But who would have thought.
Yes that is my question also, what do you have on the pedal in the way of play now? did you change the clutch fork? Stock to HD style or anything etc.? Is the throw out bearing positioned correctly? Did the clutch bolts get torqued down? and on and on?
You are one of the more competent people on here, so I am a little baffled also because of this knowing your tech knowledge and such!
Yes that is my question also, what do you have on the pedal in the way of play now? did you change the clutch fork? Stock to HD style or anything etc.? Is the throw out bearing positioned correctly? Did the clutch bolts get torqued down? and on and on?
You are one of the more competent people on here, so I am a little baffled also because of this knowing your tech knowledge and such!
04-13-2014, 08:44 AM
#10
Race Director
Too bad both units weren't layed on the ground together and a straight edge level on a flat garage wasn't done. But who would have thought.
Yes that is my question also, what do you have on the pedal in the way of play now? did you change the clutch fork? Stock to HD style or anything etc.? Is the throw out bearing positioned correctly? Did the clutch bolts get torqued down? and on and on?
You are one of the more competent people on here, so I am a little baffled also because of this knowing your tech knowledge and such!
Yes that is my question also, what do you have on the pedal in the way of play now? did you change the clutch fork? Stock to HD style or anything etc.? Is the throw out bearing positioned correctly? Did the clutch bolts get torqued down? and on and on?
You are one of the more competent people on here, so I am a little baffled also because of this knowing your tech knowledge and such!
It is baffling...or just coincidence...or both...or neither.
DUB
04-13-2014, 10:08 AM
#11
Le Mans Master
Thread Starter
Interesting problem, Garrett.
Is it safe to assume you've got some free play in the clutch pedal when it is at the top of its travel?
If so, then what are the odds that this is just "one of those things".... i.e. the clutch would have begun slipping anyway and it just happened to coincide with the install of the new scattershield. Does the clutch have a lot of track time on it?
Jim
Is it safe to assume you've got some free play in the clutch pedal when it is at the top of its travel?
If so, then what are the odds that this is just "one of those things".... i.e. the clutch would have begun slipping anyway and it just happened to coincide with the install of the new scattershield. Does the clutch have a lot of track time on it?
Jim
The clutch was not touched. The clutch was new in February when it worked fine at TWS. That is the only use until this weekend, when it slipped BADLY in all gears.
Y'all have given me some good insight though. I will measure BOTH scattershelds side by side to see if there is any difference. I have not ever run a block plate......hopefully will never need one. My limiter is set for 6500.
Thanks for the help. I'll let you know what I find.
Garrett
04-13-2014, 11:27 AM
#13
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I'd think a pertinent question would be, "did the clutch start slipping immediately on the first drive out of the garage after the scattershield change or did it take a little time?
You may have thrown some lining off the disc if it took awhile for the clutch to slip.
You may have thrown some lining off the disc if it took awhile for the clutch to slip.
04-13-2014, 11:38 AM
#14
Le Mans Master
Thread Starter
Howard, That's a good idea for you young guys, but we installed the Quartermaster triple from my L88, and my aged knees just couldn't take it. Sorry, I'm a wuss, but I'm back to a "street" clutch for now
04-13-2014, 12:24 PM
#15
Race Director
04-13-2014, 02:37 PM
#17
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I'd certainly pull the clutch and look at it anyway.
JIM
JIM
04-13-2014, 07:14 PM
#18
Race Director
Seems a likely answer - or the trusted installer got a little carried away on his test drive.
04-13-2014, 07:49 PM
#19
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04-13-2014, 08:46 PM
#20
Le Mans Master
Thread Starter
Clutch is OUT of the car. It shows some (obvious) signs of heat, BUT.....no "failure" signs, ie no missing or shucked off disc facing etc. Clutch will go back to the manufacturer tomorrrow. To be continued.....
Mike at my age, my "rippin & roaring" is quite meek and mellow;-)
Mike at my age, my "rippin & roaring" is quite meek and mellow;-)
Last edited by 63Corvette; 04-13-2014 at 08:49 PM.