- Thread starter
- #26
KCDsmDude
Proven Member
- 374
- 235
- Oct 11, 2020
-
Fairfield,
Ohio
Is this with a dogbox car, or a stock transmission car? I thought your email you sent said you had a dogbox, which uses a 1"x23 spline AT03 clutch alignment tool (same as Evo). Which exact quarter master clutch are you using? 6 leg? 8 leg? silver 2 piece flywheel or black 1 piece flywheel? The gear drive disk pack uses an AT20 7/8"x20-spline tool for the stock size input shaft, and a 1"x23 spline AT03 clutch alignment tool for PPG/PAR dogbox transmissions that have a larger input shaft size / spline count. Also, with certain flywheels, the clutch alignment hole is larger and the alignment tool needs to be taped to fit the hole size of the flywheel. It just depends on which exact clutch and flywheel assembly you are using.
As for the tcase, remove the side cover and remove the input sleeve and drive gear and fully inspect the bearings. The inner tapered roller bearing is notorious for premature failure vs. the rest of the bearings.
As for turning torque, with used stuff set up without much preload it should be easy to turn by hand disassembled or assembled. With some of my race ones that have a bit higher preload on the drive gear and the pinion preload it can be firmer to turn and require an output shaft installed into the tcase or a slip yoke on the tail shaft to rotate.
Dogbox transmission car; or so that's what I was told. But I seemed to recall that I counted the splines on the input shaft from transmission to the clutch, and it came back as 20. Started to confuse myself when I saw that on your site clutch only comes in 20 or 23 spline, 23 spline being PPG gearset only.
This clutch is on the car: https://www.quartermasterusa.com/product/v-drive-clutch-7-25
The clutch is very old, but low mileage (according to PO). Noticing the options for the input shaft on the QM site aren't matching what you're saying. 1 1/8 x 10 spline or 1 5/32 x 26 spline, so that would lead me to believe they don't even make this clutch anymore for the car? But I may be speaking incorrectly.
I'm not sure what flywheel is on the car at the moment. Will have to check when home
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