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  1. #1
    Race Transmission Rebuilder twicks69's Avatar
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    Oct 2004
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    FS: Quartermaster 7.25" triple plate Optimum-V race clutch!

    Hey guys, I am selling a killer road-race triple-disk Quartermaster Optimum-V 7.25" clutch. It is used, but in excellent condition. This clutch is well over $700.00 NEW. I am asking $250.00 for this setup!

    I have pictures of the clutch attached below:

    I was going to run this as a backup in my car, but I am going to run a 7.25" triple-disk Quarter Master Carbon-V Clutch instead (when it comes out in a few months).

    THIS IS NOT A DRAG RACE CLUTCH, NOR IS IT A STREET CAR CLUTCH!!!!!!!!
    It cannot handle the heat caused by launching the vehicle; It will not last long if used as a drag race clutch. It is designed for lightning fast shifts and extremely high torque capacity out of the smallest and lightest foot-print possible. Therefore it is ideal for a ROAD RACE or AutoCross car with decent power.

    7.25" Optimum-V
    Disks included are 1.25" input shaft diameter, 29-spline
    Disk thicknesses are .101" (front), .102" (middle), and .103" (rear).


    The clutch was used for one NASCAR Sprint Cup race, and then changed out. The disks would be 1.05" thick when new.

    *Grooved pressure and floater plates for cleaner and cooler running
    *Stiffer cover Design
    *Extremely high torque capacity (1200 lb/ft)
    *Lower Moment of Inertia(MOI) than the standard V-Drive clutches.

    Here is a link to the Quartermaster site regarding this clutch:
    http://www.racingclutches.com/produc...=34&cat_key=81

    7.25" Optimum-V
    3x .105" disks (new)
    Premium ferrometallic disks
    9.57lb overall weight (minus flywheel)
    Moment of Inertia: 79.05 lb/in^2
    Torque Capacity: 1200 lb/ft

    Quartermaster Replacement Part numbers for this clutch are:
    108507 PRESSURE PLATE 7.25 OPT STD
    108508 PRESSURE PLATE 7.25 OPT HIGH
    318500 COVER ASSEMB OPTIMUM 7.25 3D
    508507 FLOATER PLATE 7.25 OPTIMUM

    Fits all Quarter Master and Powertrain Technologies (and maybe Tilton) flywheels setup for a 7.25" clutch!!!


    Here is a list of the associated clutch packs (disks) available to run in this clutch (Part # / Clutch type / disk size / disk quantity / input shaft x spline-count):
    309390 CLUTCH PAC 7.25 3D 1-1/8X10
    309391 CLUTCH PAC 7.25 3D 1-1/16X10
    309392 CLUTCH PAC 7.25 3D 1-3/8X10
    309393 CLUTCH PAC 7.25 3D 1X23 CHRY
    309394 CLUTCH PAC 7.25 3D 1-3/16X18
    309395 CLUTCH PAC 7.25 3D 1-5/32X26
    319395 PAC OPT 7.25 3D 5/32X26
    319395N PAC OPT 7.25 3D 5/32X26
    319399 PAC OPT 7.25 3D 1-1/4X29
    326041 CLUTCH PAC 7.25 3D 7/8X20
    326059OR CLUTCH PAC 7.25 3D 1X6 .200" D
    326060 CLUTCH PAC 7.25 3D 1X10
    326061 CLUTCH PAC 7.25 3D 1X14
    326063 CLUTCH PAC 7.25 3D 1X23
    326063MA CLUTCH PAC 7.25 3D 1X23 RX-7T
    326063OR CLUTCH PAC 7.25 3D 1X23 ORGANIC
    326064 CLUTCH PAC 7.25 3D 1X24
    326080OR CLUTCH PAC 7.25 3D 1-1/8X10 ORGANIC
    326082OR CLUTCH PAC 7.25 3D 29MMX10 ORGANIC
    326090OR CLUTCH PAC 7.25 3D 1-5/32X26 ORGANIC
    326098 CLUTCH PAC 7.25 3D 1-1/4X10
    326938 CLUTCH PAC 7.25 3D 7/8X6 ORGANIC
    326960 CLUTCH PAC 7.25 3D 1X6
    327092 PAC OPT 7.25 3D 1-1/4X29
    327094 PAC OPT 7.25 3D 1-3/16X18

    Here are a list of flywheels from Quartermaster that this clutch is applicable to:
    (part-number is the first number listed)
    107160 FLYWHEEL FORD ZETEC F-CONTINENTAL
    506127 FLYWHEEL MG MIDGET 1275 104T
    506174 FLYWHEEL CHEV 2.0 7.25 ULTRA-L
    506190 FLYWHEEL CHRY 2.2 6B 7.25
    506191 FLYWHEEL CHRY 2.2 8B 7.25
    506205 FLYWHEEL DATSUN A 7.25
    506206 FLYWHEEL DATSUN L 94 5B 7.25
    506207 FLYWHEEL DATSUN L 94 6B 7.25
    506208 FLYWHEEL DATSUN L 94 8B 7.25
    506209 FLYWHEEL NISSAN SE-R SR20-DF 7.25
    506275 FLYWHEEL FERRARI 250 7.25
    506276 FLYWHEEL FERRARI 308 7.25
    506295 FLYWHEEL FORD 1.6 BDD 7.25
    506298 FLYWHEEL FORD 2.0 2.3 7.25
    506299 FLYWHEEL FORD COSWORTH YAC 7.25
    506300 FLYWHEEL FORD GT-40 STEEL 117T
    506381 FLYWHEEL HONDA CRX 7.25
    506382 FLYWHEEL HONDA PRELUDE 7.25
    506520 FLYWHEEL MAZDA ROTARY TOP MT
    506521 FLYWHEEL MAZDA ROTARY BOTTOM MT
    506521A FLYWHEEL MAZDA ROTARY BM AL 7.25
    506522 FLYWHEEL MAZDA GLC 7.25
    506523 FLYWHEEL MAZDA 626 7.25
    506524 FLYWHEEL MAZDA MIATA 323 7.25
    506540 FLYWHEEL MITSUBISHI 6 BOLT
    506556 FLYWHEEL NISSAN VG30 V6 94T 7.25
    506601 FLYWHEEL OLDS QUAD 4 7.25
    506602 FLYWHEEL AURORA/N-STAR 7.25 BTN
    506603 FLYWHEEL AURORA/SHELBY 7.25 142
    506610 FLYWHEEL OFFY 7.25 BTN
    506626 FLYWHEEL PONTIAC L4 7.25
    506630 FLYWHEEL PONTIAC FIERO 7.25
    506660 FLYWHEEL PORSCHE 944 BTN
    506710 FLYWHEEL SATURN 1.9L 7.25
    506767 FLYWHEEL TOYOTA 4AGE 7.25
    506768 FLYWHEEL TOYOTA 4AGE ATLANTIC
    506781 FLYWHEEL TRIUMPH SPITFIRE 7.25
    506782 FLYWHEEL TR6 TRIUMPH
    509106 FLYWHEEL CHEV 7.25 LGC 105 THI
    509107R FLYWHEEL CHEV 7.25 153T STD
    509114 FLYWHEEL CHEV LM 7.25 LGC 105
    509127 FLYWHEEL LS1 7.25 BTN FOR REAR
    509132 FLYWHEEL CHEV OPT 7.25 153T LW
    509133 FLYWHEEL CHEV OPT 7.25 153T
    509218 FLYWHEEL DODGE VIPER
    509221 130T RING GEAR CHRYSLER CRANK
    509222 130T RING GEAR W/ CHEVY CRANK
    509228 FW DODG OPT 7.25 153 FORD CRK
    509228L FW DODGE/FORD RP57 7.25 153 LW
    509228R FW DODGE/FORD RP57 7.25 153 STD
    509230 FLYWHEEL 7.25 153T STD
    509230L FLYWHEEL OPT 7.25 LW
    509230R DODGE 8 BOLT CUP FLYWHEEL 153T
    509302 7.25 FW FORD/DODGE RP57
    509305 FLYWHEEL FORD 7.25 153 WC
    509306 FLYWHEEL FORD 4.6 8B 7.25 157
    509311A FLYWHEEL FORD ALUMINUM BTN 7.25
    509311SC SCALLOPED FORD 7.25 BUTTON
    509311SC28 SCALLOPED FORD 7.25 BTN BALANCED
    509312 FLYWHEEL FORD 7.25 LGC 105
    509543 FLYWHEEL 7.25 MITSUBISHI EVO
    509728 FLYWHEEL TRD OPT 7.25 153T
    509740 FLYWHEEL TOYOTA V8, 10 BOLT
    509112 FLYWHEEL CHEV 7.25 LGC 105

    If you want to learn more to see if your vehicle is applicable to running this clutch for your application, I would reccomend contacting Quartermaster at: 1-888-258-8241 (sales/technical -press 1).
    Last edited by twicks69; 02-19-2009 at 12:40 PM.
    Tim Zimmer
    1999 Mitsubishi Eclipse GSX
    9.49@148mph, street trim.
    ----------------------------
    2005 Subaru Outback Limited
    -- Winter Beater --

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