Dumbo The Flying Elephant

[Frank Castros]

Larry,
The level of "Blueprinting" in this engine is nothing short of amazing. I hope it brings you the FS/D class Wally once again.
Frank

[Larry Hill]

Mr Vic stuff is Bullet fast and the car is a work of art. To have a chance I’ll need everything I can get. And if I try to go to Super Stock that Patterson young man is way fast. Both Chevys run killer MPH.

[Larry Hill]

Got some tooling finished today, will finish one in the morning. Patsy is on her sister trip so my list of honey do?s is real short this weekend. I should get a lot accomplished.

[Larry Hill]

Best laid plans of men and mice. Long story short it blew up in my face. Maybe a 50% weekend

[Cglrcng]

Originally Posted by Larry Hill

In trying to make more power I know we need to raise the RPM level. To me that means paying attention to fits. Well I found this one by accident. The gears that go on the crank that drives the camshaft are black in color and have an ID that has been bored. Two out of the three gears still had portions of the ID still black in color and fit looser on the crank. I do have one that cleaned up on the ID and is a good sliding fit on the crankshaft. I don't know if that could be a potential problem at 150 Hertz, but just trying to keep everything straight and round.

I don't actually know the legal answer to the question (but it may be worth the asking of the proper tech person), but...can you legally overbore the ID and press fit a brass bushing to correct the ID of the hole for correct centering and true up of those cam/crank gear sets?

[Larry Hill]

The 60mm cam uses straight roller cam bearings that have positive stop location. I don?t know the difference in expansion rates if any between brass and aluminum. I would hate to guess wrong and turn something loose during a pull.

[Larry Hill]

I had two torque wrenches checked today. The Snap-on checked rite on throughout the range. With the non Snap-on wrench, the higher the torque setting the greater the error. The error was almost 10%. Was it enough to pull the threads out of the block? I don't know.

[Larry Hill]

Back in the swing of things 4 to 8hours a day on getting Dumbo better. Most of the grandpa stuff is done until fall. It feels kind of good.

Tomorrow is miles to go before I sleep.

[Larry Hill]

Busy day yesterday. Drop some stuff off, went to new places, met some new people, visited with old friends, picked up bad parts, and got some new tools to try. 422miles in six states. The great part was the time alone with the radio off thinking of ways to improve our racing program. Sometimes I would pull off on an exit to write something down so I would not forget.

[Larry Hill]

Beginning to see the light at the end of the tunnel, you guessed it, it's another train. When I tested the strength of my repair by torqueing the cap down to specifications the other outer stud threads pulled out. The repaired stud took the torque and felt solid. So now I'm installing the repairs to the remaining five short outer stud holes.
"and so it goes"