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Turbo Todd - New driveshaft & flywheel. Starter moved to the back.
Long story short, at one point Todd parked his car until this project was finished. He stress tested the stock flywheel and felt it was not safe at the RPM he's spinning.
Also the stock driveshaft was failing. He rifle drilled both ends a while ago which helped prolong the life at his power levels, but it was still twisting to the point of failure.
The starter ring came from an air cooled VW flywheel (last photo)
He made the flywheel on the lathe at home, and hand cut the timing teeth - it's made out of 4140 hot rolled steel
Drive shaft is a pice of DOM (drawn over mandrel) tubing
Torque converter is from a 190 Mercedes, internally modiifed (by him) for a higher stall speed than stock. I think he has 75-80 hours into the converter modifications
About 150 hours making custom tools to complete these modifications
This is the 4th torque converter he modified. First one an 11" from an early 928. The rest 10" from Mercedes. The smaller torque converter = higher stall speed
Stall speed of the torque converter is about 3,500rpm
It amazes me the amount of work you guys get done!
I spent half a day yesterday removing the factory "H" pipe and converters just so i can check the flex plate and Thrust bearing/crank endplay.
Very very nice work, agree with moving the weight backwards and it also gets the starter away from the very hot engine. You could do it with a manual car except you must leave the clutch engaged. Great job!
yeah amazing work , putting the finishing touches to our race car, what I havent sent out to be machined have finished with a hand file , an enormous amount of work.
Absolutely beautiful work by the way , I for one would love to see pictures of your workshop in which this artistry was performed
Very nice work. Is the driveshaft only supported by that one large bearing in the middle? If that's the case than maybe only one Superbearing would be enough for stock shafts too.
Very nice work. Is the driveshaft only supported by that one large bearing in the middle? If that's the case than maybe only one Superbearing would be enough for stock shafts too.
It's DOM tubing (Seamless I assume). Inherently much stiffer than a solid shaft.
beautiful works!
and what are the advantages of this set up vs stock?
If I've been keep score correctly, the advantages are the ability to use a smaller diameter torque converter (for higher stall speeds) and move the starter to the back of the car (for better weight transfer).
If I've been keep score correctly, the advantages are the ability to use a smaller diameter torque converter (for higher stall speeds) and move the starter to the back of the car (for better weight transfer).
better weight transfer, or better weight balance?
thats a LOT of work to move 15lbs to the rear of the car, or 8 if you go to the lightweight starter.
the interesting part is the smaller diameter torque converter.
03-06-2016, 07:58 PM
Turbo Todd - New driveshaft & flywheel. Starter moved to the back.
