Hot Rods Holy Grail find, Tom Beatty blown olds

Ive actaully always wondered that myself, i believe it started out being done on flatheads by barney navarro or Tom Cobb and was to gain some clearance for upper hoses etc etc, Tom was buddies with Barney so im assuming he just carried it over from that, i dont feel it was for weight savings as its very little weight that gets removed.

jeff

 

Holy Batman.......

 

How does the blower bolt to the manifold???

 

Countersunk screws fasten the blower case to the manifold, but that takes some precision machining. Look at how the Beatty manifold is threaded for the blower. That bolt pattern has to be very accurately transferred to the pruned case and then the inside of the case has to be counterbored for the screw heads to clear the rotors. The counterbores are done by back-facing, a shank goes into a hole and a cutter is put on the shank to cut the bore for the screw head, this operation is done from the outside, in. The inlet side of the case will be in the way of the tool so it has to be done that way. Finally, with the case bolted down the blower is assembled.
Naturally it is important that the manifold and case bolt patterns be exactly in line with the crankshaft so the belts stay on and have good reliability.
Machinists BITD using levers and dials, pre- CNC, were highly skilled and creative to achieve what they wanted and or needed.

 

Heres my stuff for my dragster with a 427 Olds motor ( 1/2" stroke x 4.030 bore)

 

Awesome find Titus!!! Great work of getting the engine too and keeping the setup together.
Would look great in a drag Coupe or perhaps a street/strip, heavily channeled A coupe, pie crust slicks, etc.
You'll have to buy belts by the case, wholesale to keep from going broke.

 

Pete Robinson ran pruned blowers. He was a fanatic for saving weight.

 

great find! Glad to see parts like this go to the right guy who will do it justice. !!

 

Olds' Gold!
Congrats on a great purchase.

 

Tom had his shop on Glenoaks Blvd in Sun Valley for many years, near where I live, He ran that blown Olds setup in his 40 Delux sedan delivery for several years, look at the carbs in the Tank pict the carbs are trimmed to clear the hood of his 40 Ford sedan delivery. He wasn't much on shooting the breeze but I'd try anyway, once he knew you wern't buying some he'd keep working and give you the "I'd wish you'd leave" look. He did shorten a couple of driveshafts for me and did a nice job on them. You got yourself some great stuff. JW

 

As did Ohio George Montgomery.

https://www.jalopyjournal.com/forum/threads/how-is-a-pruned-blower-case-mounted.999144/

 

Wow! Awesome find!