I needed to replace or repair my splines on my driver unit. the original style came cast aluminum and I did have a NOS unit,but the cast units will not hold up to a lot of power. especially under any high stall with a strong motor.
they did first make a replacement part made out of billet aluminum. that's the piece that I have been running and it's just wore out. then they got smart and made it out of steel.
you can see in the older catalog you could purchase this item. as we all know in the jr dragster world things got bigger(motors) and they drop the 340 series and now use bigger and stronger,more adjustments and made out of billet and will hold up to tons of power.
now with the new minibike craze this torque converter is a excellent replacement part for any small block hot rod engine when going with the 2 piece unit that uses steel spline and billet pulley. when using this with a built motor that has just a billet/aluminum flywheel it balances very true and the engagement setup superior over a 20 or 30 series unit and you don't get that unwanted vibration that a lot of people get when running a 20/30 series with a light billet flywheel.
unfortunately no one whats to get on the bandwagon and start making them again. personally think there could be a market for these again if people new how well they work.
here is my billet unit. I will be machining the splines off and saving the back half pulley
.
next was to make a new set of splines. first step was to make the center shaft.
make all my rough cuts
I will have to tap for the threads and broach it for the long keyway to hold both pieces on the crankshaft.
finish part next to the nos part on the left. that was a big help. with the nos part never ran I could get good measurements off of it to make my new splines. part on the right is another billet unit I have. so I could make another one off of that. otherwise I would have to machine out a chuck of billet to make a pulley again.
they did first make a replacement part made out of billet aluminum. that's the piece that I have been running and it's just wore out. then they got smart and made it out of steel.
you can see in the older catalog you could purchase this item. as we all know in the jr dragster world things got bigger(motors) and they drop the 340 series and now use bigger and stronger,more adjustments and made out of billet and will hold up to tons of power.
now with the new minibike craze this torque converter is a excellent replacement part for any small block hot rod engine when going with the 2 piece unit that uses steel spline and billet pulley. when using this with a built motor that has just a billet/aluminum flywheel it balances very true and the engagement setup superior over a 20 or 30 series unit and you don't get that unwanted vibration that a lot of people get when running a 20/30 series with a light billet flywheel.
unfortunately no one whats to get on the bandwagon and start making them again. personally think there could be a market for these again if people new how well they work.
here is my billet unit. I will be machining the splines off and saving the back half pulley
next was to make a new set of splines. first step was to make the center shaft.
make all my rough cuts
I will have to tap for the threads and broach it for the long keyway to hold both pieces on the crankshaft.
finish part next to the nos part on the left. that was a big help. with the nos part never ran I could get good measurements off of it to make my new splines. part on the right is another billet unit I have. so I could make another one off of that. otherwise I would have to machine out a chuck of billet to make a pulley again.