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 bigmike312 |
Something interesting from 1941 |
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Posts: 1376 (06/01/09 06:58 PM) Home Racing Guru! |
A friend of my family was going through some of his dad's old papers and came across this. He allowed me to make copies for my collection and I am sharing
them with you so you can enjoy them. DO NOT print these to sell on eBay or anywhere else, I am posting them just for you viewing pleasure and expect everyone
to behave.
These are thumbnails so click on them for a larger view.   
 
Big Mike Never argue with a fool, they'll drag you down to their level then beat you with experience. |
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 HomeRacingWorld |
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Posts: 14089 (06/01/09 07:17 PM) The Lazy Administrator |
THAT is just too cool Mike. Thanks for this!
"They Didn't Say You Couldn't" - Smokey Yunick
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ElSecundo |
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Posts: 7836 (06/01/09 08:16 PM) Home Racing Guru! |
Wow, that's amazing stuff. Literally the birth of legends...
I like cottage cheese. That's why I want to try other dwelling cheeses, too. How about studio apartment cheese? Tent cheese? Mobile home
cheese? Do not eat mobile home cheese in a tornado.
Mitch Hedberg |
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iamBerto |
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Posts: 313 (06/01/09 11:15 PM) |
I like the last letter : " No passes of any kind given out for admission to this race. That means, no pit passes................................. we are
anxious to stop the free ticket business.
This is where it all started. :-) Cheers, Roberto |
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ElSecundo |
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Posts: 7838 (06/02/09 06:52 AM) Home Racing Guru! |
I liked the prize money -- $400 for first place.
I like cottage cheese. That's why I want to try other dwelling cheeses, too. How about studio apartment cheese? Tent cheese? Mobile home
cheese? Do not eat mobile home cheese in a tornado.
Mitch Hedberg |
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raceeng18 |
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Posts: 281 (06/02/09 07:46 AM) |
How about that one page of rules. I wonder how large the rule book is now? Thanks Mike
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razersedge |
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Posts: 137 (06/03/09 06:23 AM) |
Very cool stuff!! I wonder what's the purpose of cutting down the water pump impeller blades though? Wouldn't that create less flow?
And one other thing: It said all cars failing to qualify must line up behind the qualifying cars. Did that mean that everybody still got in the race no matter what? I wonder how that would stack up today..... 
"In the end, there can be only one" ~ The Highlander
Last Edited By: razersedge
06/03/09 06:25 AM.
Edited 1 times.
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Robert Livingston |
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Posts: 876 (06/03/09 07:10 AM) Home Racing Guru! |
Running boards required . . . Bumpers and mufflers must be removed . . . talk about nostalgia.
Anyway, a friend of mine owned a '50 Mercury a couple of decades ago, and he told me the standard modification for Ford and Merc flat heads was to remove every other impeller blade in the water pump, to slow the flow of water through the system, which supposedly cured the over heating problem. Now, this sounds absurd, because it is a basic physical law that the faster the rate of flow, the more heat water absorbs from surfaces (like the interior of a hot engine block). And, the faster it flows through the radiator, the more heat is pulled out and dispersed into the air. And everybody knows the faster the air blows through the radiator, the faster it cools the water. Same principle. So, your guess is as good as mine as to why it helps these old motors to remove every other impeller from the water pump. My guess is that it is a poor design which suffers from cavitation, which is eased with greater space between the vanes. Who knows? |
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bigmike312 |
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Posts: 1377 (06/03/09 08:13 AM) Home Racing Guru! |
Your friend was right about the water pump. I learned that secret back in the late fifties when I hung out as a kid at the local repair shop that ran a 48 Ford
coupe. They also ran heads that were made for cars being shipped to the Rocky Mountains because they were higher compression than all the other stock heads.
Big Mike Never argue with a fool, they'll drag you down to their level then beat you with experience. |
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razersedge |
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Posts: 138 (06/03/09 08:15 AM) |
I spoke with two of my 'older' friends here at work and they both suggested that cutting down the impellers would increase horsepower. There was less
drag on the motors and the flathead V8's had two water pumps anyway. They also said they were notorious for running hot. The one guy I spoke with has a
'56 with a flathead in it, replaced the water pump, and the car ran hotter. It was suggested by the mechanic to cut down the impellers. Any mechanics out
there who can educate us?
"In the end, there can be only one" ~ The Highlander
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Robert Livingston |
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Posts: 878 (06/03/09 08:44 AM) Home Racing Guru! |
What a riddle. If you installed larger diameter pulley wheels on the water pumps, it would slow the RPM. But somehow, the flat head guys didn't do that,
they modified the impellers. I had forgotten there were two pumps, one on each bank of cylinders. Maybe a slower rate of flow allowed the water in the block to
go places it wouldn't go under "stock" conditions. On my Toyota Land Cruiser engine (OHV inline 6), I remember placing restrictors in the forward
block-to-head water ports to get better flow through the rear of the head, around the exhaust valves, which cured a valve-burning situation in the rearmost
cylinder.
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Robert Livingston |
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Posts: 879 (06/03/09 09:20 AM) Home Racing Guru! |
A little research into the flat head cooling question turned up on page 91 of Hot Rod Handbook, a Fawcett book published c. 1951.
"To ensure an even cylinder head cooling, use thermostats or install baffles (with a 3/8-in. hole in the center) in the radiator hose above the heads." On page 101: "Baffles are often used in the water necks of Ford and Mercury engines to slow down the water flow through the heads. A 3/8-in. hole is drilled in the center of a threaded pipe cap or plug (as is commonly used by plumbers) of the proper size to fit snugly into each hose on the two water necks. Such a restriction tends to distribute the water flow evenly over the entire head surface, rather than allow a rapid movement over the center of the head only with hot spots at the ends. The result is more even cooling over the head surface." |
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