Clutch help

Discussion in 'PSI Superchargers Tech Questions' started by OUTLAW, Oct 17, 2006.

  1. OUTLAW

    OUTLAW New Member

    Joined:
    Dec 1, 2005
    Messages:
    97
    Likes Received:
    0
    Alright guys, I've found help here for all of my engine questions so lets see who can give me some clutch help!

    I finally ran my car for the first time this weekend. Outlaw Pro Mod, 518 KB/BAE hemi 14-71 Littlefield Hi Helix retro. 4.30 gear, 1.80 low (B&J) 34.5 tires and a ram 10" 3 disc with black springs.

    First pass, 2 turns of base 30 grams of counter, at .500 in to the run I was already at 7900 rpm eng and 1400 ds.

    I added more clutch and got up to 3 turns of base and the driveshaft speed only got to 1700 rpm @ .500 (also tried a shorter 4 link setup)
    My question is what numbers should I be looking at for DS speed early in the run? The best 60' was a 1.07 and I'm thinking I may have too much bite in the car and not enough low end wheel speed.
    No 2 step on the car just swapping feet @ 5500
     
    #1
    OUTLAW, Oct 17, 2006
  2. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,630
    Likes Received:
    189
    At .5 seconds into the run the DS should be up around 2400-2600 rpm.

    I question the 1.80 1st gear with a 4.30 rear. it would seem like you need to be around 1.98 to 2.10. More around the 2.10

    What is happening to the engine rpm at launch. Is it going up or dropping down in rpm first. What is happening to your driveshaft RPm on launch. Is it a steady climb or does it dip first?
     
    #2
    Mike Canter, Oct 17, 2006
  3. OUTLAW

    OUTLAW New Member

    Joined:
    Dec 1, 2005
    Messages:
    97
    Likes Received:
    0
    the driveshaft has a little "fish hook" when the clutch is released and then climbs pretty steady. With only 2 1/2 turns of base the engine accelerated right through the clutch until I lifted.
     
    #3
    OUTLAW, Oct 17, 2006
  4. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,630
    Likes Received:
    189
    Is that a RAM 6 finger of 9 finger clutch
     
    #4
    Mike Canter, Oct 17, 2006
  5. OUTLAW

    OUTLAW New Member

    Joined:
    Dec 1, 2005
    Messages:
    97
    Likes Received:
    0
    6 finger, 6 stand
     
    #5
    OUTLAW, Oct 17, 2006
  6. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,630
    Likes Received:
    189
    I am not sure of the settings for the 6 stand. i know on our 9 stand we use right up at 4 turns on base and around 80-85 grams total on all the none fingers. With the "fish hook on the driveshaft rpm indiactes that you do not have enough turns on base and I would also say not enough weight on the fingers. this clutch is very different from a Crower. The other problem is that you are going to have to really work the clutch with a lot of base to get past that 1.80 1st gear.

    If you call Mike Norcia at RAM at 803 788-6034 and give him all the data on the clutch he will give you a real good start off point with the clutch that will be real close.
     
    #6
    Mike Canter, Oct 17, 2006
  7. BIG POWER

    BIG POWER New Member

    Joined:
    Oct 3, 2006
    Messages:
    12
    Likes Received:
    0
    A 4.56 rear gear would help alot. With a 4.30 gear I would try a 2.18 low to help you get some wheel speed. I run a 1.98 low first with a 4.56 rear gear
    and I have found it the most forgiving.
     
    #7
    BIG POWER, Oct 17, 2006
  8. ITS IN MY BLOOD

    ITS IN MY BLOOD TAFC

    Joined:
    Dec 2, 2004
    Messages:
    1,093
    Likes Received:
    2
    HELP.......

    [​IMG]
     
    #8
    ITS IN MY BLOOD, Oct 17, 2006
  9. OKC-Oilie

    OKC-Oilie Funny Car

    Joined:
    Jul 26, 2003
    Messages:
    102
    Likes Received:
    0
    OUCH! What happened? Looks like a major clutch failure:eek: Time for the "liquid wrench"
     
    #9
    OKC-Oilie, Oct 18, 2006
  10. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,630
    Likes Received:
    189
    Is it the phot or does the clutch disk look like it is in backwards. Maybe it is just the type of disk being used. What do you guys think?
     
    #10
    Mike Canter, Oct 18, 2006
  11. ITS IN MY BLOOD

    ITS IN MY BLOOD TAFC

    Joined:
    Dec 2, 2004
    Messages:
    1,093
    Likes Received:
    2
    id say the disc was on back a$% wards, do think the center of
    the disc was bottoming out on the flywheel bolts,
    and isnt the floater on backwards too, looking from the back of mtr
    mtr would turn counter clockwise cutters or going with the rotation
    of motor as opposed to pointing away from mtr direction.
     
    #11
    ITS IN MY BLOOD, Oct 18, 2006
  12. Eric David Bru

    Eric David Bru Member

    Joined:
    Sep 4, 2005
    Messages:
    417
    Likes Received:
    1
    I am pretty sure that photo is the clutch out of a fuel altered from a race in Tulsa early 2006.
     
    #12
    Eric David Bru, Oct 18, 2006
  13. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    890
    Likes Received:
    48
    disk

    The clutch disk is in right hub side to the hat.
     
    #13
    kosky racing, Oct 18, 2006
  14. 182 TAD

    182 TAD New Member

    Joined:
    May 19, 2003
    Messages:
    116
    Likes Received:
    0
    Maybe the disc is backward , depends on the type but for sure the floater is backward ( no doubt) and it does not matter what type it is !!!!!!

    Serge TAD-15
     
    #14
    182 TAD, Oct 19, 2006
  15. PM 3570

    PM 3570 New Member

    Joined:
    Oct 17, 2006
    Messages:
    25
    Likes Received:
    0
    TAD 182 ; wich way turns your engine then ? :confused:


    You started right; motor looking from the back goes counter clockwise.

    so the stands wil push against the floater lips. ;)

    It look to me that there was a BIG clutch lockup follow by a trans or rear gear failure ? just guessing on this one. :rolleyes:
     
    #15
    PM 3570, Oct 19, 2006
  16. tjb

    tjb New Member

    Joined:
    May 24, 2004
    Messages:
    50
    Likes Received:
    0
    I believe the the stand/stud missing tore out of the hat and wadded up between the can and the rest of the clutch laying it over. It is kinda of hard to tell since there wasn't a piece left bigger than 2'. Tad 182, I dont think I want to ride it with the floaters in your way.
    Peace
     
    #16
    tjb, Oct 19, 2006
  17. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,630
    Likes Received:
    189
    According to what Nick Bonifante Sr has told me the floater is installed correctly as far as the single style tabs being on the left side of the top stand when looking forward behind the clutch. That is the way I always do it. As far as the cutting or dust removing grooves they can be either way. One way puts the dust in the center of the clutch and the other way slings the dust to the outside of the clutch.
     
    #17
    Mike Canter, Oct 19, 2006

Share This Page





XenPorta 2 PRO © Jason Axelrod from 8WAYRUN.COM