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Thread: Play dumb games win dumb prizes.

  1. #1
    Join Date
    Jul 2002
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    Boston, MA
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    Play dumb games win dumb prizes.

    Trying to crowd please and show off I managed to burn up something clutch related, 20” 3.08 and second gear dump clutch is was not what I had expected as it bogged and tried to recover the burnout by redumping the clutch at 5000rpms. I can smell the clutch material as we John Forced it for 30-40 yards.

    At lights I had a hard time getting into any gears. Engagement feels much lower now, almost like there is air in slave. Now the mad scientist needs to tear it all apart and check for the welds on the intake manifold. Fun times in shuffle town.

    Can I buy just a clutch disk for the CF Dual Friction, I can’t remember.
    Last edited by ricardoa1; 07-31-2020 at 11:27 PM.

  2. #2
    Join Date
    Dec 2007
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    Salem OR
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    Well, at least it didn't boil out, right?

    How many miles on that clutch?

    Checking their site & amazon, is looks like you can buy just the disc. Have a P/N?

    Ken
    Last edited by KMT; 07-31-2020 at 11:49 PM.

  3. #3
    Join Date
    Apr 2003
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    Ventura, CA
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    Quote Originally Posted by ricardoa1 View Post

    Can I buy just a clutch disk for the CF Dual Friction, I can稚 remember.
    I did several years back. Got it from Summit, though it was on backorder for several months.
    Be excellent to each other.

  4. #4
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    Quote Originally Posted by KMT View Post
    Well, at least it didn't boil out, right?

    How many miles on that clutch?

    Checking their site & amazon, is looks like you can buy just the disc. Have a P/N?

    Ken
    The clutch is over 10 years old very abused low miles. I had to install a new flywheel after bolts came loose on my McLeod aluminum one. In itツ’s place went a new SPeC aluminum, old disc included. Break in was not friendly on my part and it slipped hard racing another car. Since that, I drove the car gently hoping the hot spots I had created went away. And for a while the chatter had disappeared and I was able to do pulls with no slippage, Fast forward to last night, I had just made a few tuning adjustments, the Misfire came back with the spare coil, still went for a night car meet, there even after the burnout the clutch held several hooning around runs as the crew caravan d to another location. I noticed the low pedal at lights and hard standing still shifts especially 1st.

    I checked the reservoir at home and it was full. I also let it cooled down and tried again and still same issues. So likely a worn and warped disc. IDK. Need to get in there, I was going to drop the droveshaft to tighten the pinion nut to see he a howl would go away I guess now I have a better reason for getting there.

    Iツ’ll call up summit. Anybody try the CF DFX model? Its pucked I wonder if will have the same issues as the SpEC I think they offer it for out cars. Bad idea? Thinking ahead just in case the cover is damaged.
    Last edited by ricardoa1; 08-01-2020 at 09:46 AM.

  5. #5
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    Quote Originally Posted by Mercutio View Post
    I did several years back. Got it from Summit, though it was on backorder for several months.
    I値l check.

  6. #6
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    Bump for thoughts on the Centerforce DFX, seems like a new option for our cars, my 1/4 miles days are over but want the clutch to take the street abuse. Ive blown up two Center Force II disks in my history, and the dual friction has held up till I installed a new spec flywheel, likely a bad break in process by me, I don稚 want SPEC woes but high torque on tall gears might not be ideal, Is it a bad idea to want this new option?

    I can稚 post my pics they are too large. Posted on FaceBook.

    Want to order parts ASAP they take forever to ship.

  7. #7
    Join Date
    Jul 2002
    Location
    Boston, MA
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    Posted some pics of the damage on FB and had a conversation over there with Corey, he ran a hybrid CenterForce PP with a RAM Sintered Iron disc on both faces on his turbo SC with good results. That led me
    to investigate alternatives. And after careful consideration Iツ’m going to try the RAM Powergrip kit designed for our cars. That kit has the Sintered Iron pucks on the Pressure Plate side and a high carbon organic full face on the flywheel side. They have 8 springs on the disk with some urethane filling, hoping these will be less prone to coil bind which could lead to other parts to break from shock load. Also the organic face hopefully make it less prone to chatter given my 3.07 some slippage at take off will be needed. I know this community sears by CF DF cause it works and provides good results and likely I would have been fine with the same again but want a better margin of abuse survival. We will see how things fair, they are typically more expensive than a CFDF so Iツ’ll probably the only one with it that will voice an opinion. Stay tuned...I’m expecting a little heavier pedal. But if it will do second gear burnouts with my 3.07 and massive wheels and tires slipping I’ll be happy.

    http://www.uucmotorwerks.com/clutch/
    Last edited by ricardoa1; 08-04-2020 at 02:34 PM.

  8. #8
    Join Date
    Jul 2002
    Location
    Roanoke, Virginia
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    3,387
    Quote Originally Posted by ricardoa1 View Post
    Posted some pics of the damage on FB and had a conversation over there with Corey, he ran a hybrid CenterForce PP with a RAM Sintered Iron disc on both faces on his turbo SC with good results. That led me
    to investigate alternatives. And after careful consideration Iツ知 going to try the RAM Powergrip kit designed for our cars. That kit has the Sintered Iron pucks on the Pressure Plate side and a high carbon organic full face on the flywheel side. They have 8 springs on the disk with some urethane filling, hoping these will be less prone to coil bind which could lead to other parts to break from shock load. Also the organic face hopefully make it less prone to chatter given my 3.07 some slippage at take off will be needed. I know this community sears by CF DF cause it works and provides good results and likely I would have been fine with the same again but want a better margin of abuse survival. We will see how things fair, they are typically more expensive than a CFDF so Iツ値l probably the only one with it that will voice an opinion. Stay tuned...I知 expecting a little heavier pedal. But if it will do second gear burnouts with my 3.07 and massive wheels and tires slipping I値l be happy.

    http://www.uucmotorwerks.com/clutch/
    Being able to do burnouts is key 😁
    Current Collection
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    1994 Thunderbird SC - 5spd
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  9. #9
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    Quote Originally Posted by Tim Groth View Post
    Being able to do burnouts is key 沽
    Thatツ痴 what Iツ知 saying, little embarrassing leaving the spot with a cloud of clutch smoke, and a little guilty cause that stuff will give someone in that crowd cancer according to California.

    But all fairness problems started after fixing the rear main seal and oil pan gaskets. I installed the my MCLeod flywheel and CF DF with several passes down the track and held fine, but I was with 3.27s during that time. When I did the oil sealing I went to 3.07 again. Not long after the flywheel loosened up and broke a bold or two. Bad install on my part or maybe the ARP flywheel to crank bolts had enough from being reused. So a SPEC aluminum flywheel went on with the same Cf DF. Not long after that repair I was challenged to race on the highway second gear starting, quickly shifting into 3rd where it slipped hard in the upper range of third. By then the race was over but chattering poked its ugly head after that incident. I decided to give the components additional break in and took it easy for a while, things got better chatter went away and I progressively tested the car for highway pulls, all satisfactory. I felt things were back to normal till this 2nd gear clutch dump with line locks. I lost the momentum and had to redump it at 5000 rpms. I held it there spinning both the tires and clutch. The results was a pile of junk. Iツ知 telling this because to be fully honest as I donツ稚 care for either company, I just donツ稚 want to be spending money and labor time changing clutches. Iツ致e exploded 3 organic discs in my SC ownership. Burnouts are the only thing this car does well and well I want to do it safely and reliably. I like my legs.

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