full presureing a Model A

V848 Ford said:
Are there any articals published on drilling a model A crank rods and main s ?
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Don't know of any, for that specific job.
However, after having spoken to a number of very experienced automotive machinist, they advise having someone with proper tools and EXPERIENCE with this job...to accomplish it best.
If you contemplate what can happen , if this job is done wrong, you can understand what is at stake, if done wrong. I've often wondered if a guy might 'practice' accuracy/technique on worn out disgarded cranks, to acquire the necessary skills to have success. I guess that you only get one chance to do it right on a good crank, eh ?
 
Others will no doubt contradict me but I wouldn't drill a model A crank shaft. Don't ask how I know but they are not strong enough to take it without increasing the likelihood of breaking.:eek:
 
A few years ago there was a thread on here about the Model A powered Pietenpol homebuilt plane from the '30's. Someone posted detailed drawings from the day showing how to convert the A engine to aircraft use, including full pressure oiling with a drilled crankshaft. If it held up in the air, should be OK for road use!
 
The thread about converting the A for aircraft use including drilling the crank is titled: "A"s and aircraft, and the plans are in post #31, by Kevin in NJ dated 09-01-2010.
 
I once got a Dayton Globe aero engine from Bill Trone's estate. Bottom part was pure A (crank, rods, cam, timing gears, oil pump). Fascinating thing. Now powering a trials car in England.
 
V848 Ford said:
Are there any articals published on drilling a model A crank rods and main s ?
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Pressure feeding the Mains is not hard
Sealing the rear main is a challenge but it can be done
Drilling the crank is 1 of those things there are 3 different ways to do it and it must be done by someone with experience I would recommend using the 3 angle method if you find someone with experience
Do plenty of research before starting
 
Jim Brierley has published a book on the 4 banger and covers how to go about this and whether or not you actually need full pressure for your application. Look him up on here. Its a good read for anyone considering go fast parts on their model A or B.
 
Clearly pressurizing the A can be done, but in reality it is only needed for a few highly modified engines. The splash oil system is extremely effective for many modified engine builds.

I think it would be wise to explain what you are doing to the engine and ask if it really needs the pressure.
 
Why waste time doing something that is commercially available in a much better form? Call SCAT and order what you want already balanced and drilled.
 
After reading much about how the Model A water pump pushes the water faster than the radiator can flow, I was not surprised to find the below statement in the attached link that Mike provided. Interesting....

http://api.viglink.com/api/click?format=go&jsonp=vglnk_143436906135211&key=478da9cdb93cd3bfc02976eee2c19bf0&libId=iaxto9pi010025g6000DAc142dygf&loc=http%3A%2F%2Fwww.fordbarn.com%2Fforum%2Fshowthread.php%3Ft%3D171187&v=1&out=http%3A%2F%2Fwww.antiqueairfield.com%2Ftypes%2FCorben%2Fcorben-ford-a-conversion.html&ref=http%3A%2F%2Fwww.fordbarn.com%2Fforum%2Fforumdisplay.php%3Ff%3D3&title=full%20presureing%20a%20Model%20A%20-%20The%20Ford%20Barn&txt=http%3A%2F%2Fwww.antiqueairfield.com%2Ftypes...onversion.html

The cylinder head is of our own design and has proven out very well. It is designed to eliminate all steam pockets and is reinforced to keep from cracking under constant high speed, however, the old cast iron head may be used but will add quite a few pounds to your ship and in such a case it will be necessary to cover up all the water pump holes and use the side type pump, for we find that the regular Ford pump does not circulate the water fast enough to keep the motor cool without the use of a large radiator.
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Mike V. Florida said:
Short cut;

http://www.fordbarn.com/forum/showpost.php?p=71517&postcount=31

Here is a large version;

http://www.antiqueairfield.com/types/Corben/corben-ford-a-conversion.html
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One interesting thing about this article is the date of the drawings: Oct. 1928. With at least a three month lead time, plus time to research and write the article, we're probably at April or May 1928. Yet these oiling modifications were already worked out and the special parts such as head and bellhousing in production! So Corbin must have gotten one of the first A engines made and started development. Question: Did he wait for a car to be wrecked, or did he buy new from a dealer?
 
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