Triumph Repair: spitfire, crankshaft nut, drive sprocket, cam drive

Question
QUESTION: cant stop turning when I'm trying to torque it down? and if you could Please!!!!! let me no how much too torque it too Thank you so much for you time

         Benjamin H Honemond III

ANSWER: Hi Ben,
If you are talking about the front crankshaft nut on the front pulley, it torques at 150 ft. lbs. (if your car is a 68 on year model)
Howard

---------- FOLLOW-UP ----------

QUESTION: nice on the 150 ft. lbs. needed that. When torqueing the nut its like everything moves and i cant get it passed 90 ft. lbs. how do i get everything to stop moving as I'm torqueing the nut  Its my first spitfire I'm only 27 thank much          Benjamin H Honemond III

Answer
Why was it off? This tightens the front pulley against the Cam drive sprocket. If something was assembled wrong inside it could be crushing something. If the key in the shaft is out of place it could be crushing the key. When assembling the pulley on the shaft you should have been able it knock the pulley in until it hit solid and tightening the nut should only been a part of a turn once it was against the washer and pulley. If it were mine, I would remove the pulley and front cover to see what is wrong as you may be destroying something by continuing to tighten. After removing the front pulley and front cover you should see a thin oil slinger (large cup shaped washer) then the cam drive sprocket. The pulley and the cam sprocket both have a half moon key in the shaft. If the key climbs up out of the shaft as you put the pulley in, it can damage the pulley and key and make it not a hard contact that only requires a part of a turn to reach 150 ft. lbs. of torque.
Howard