full presureing a Model A
 

Are there any articals published on drilling a model A crank rods and main s ?

Re: full presureing a Model A
 

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 ?

Re: full presureing a Model A
 

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:

Re: full presureing a Model A
 

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!

Re: full presureing a Model A
 

Look here and get the back issues;

secrets-of-speed-society

Re: full presureing a Model A
 

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.

Re: full presureing a Model A
 

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.

Re: full presureing a Model A
 

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

Re: full presureing a Model A
 

Short cut;

https://www.fordbarn.com/forum/showpo...7&postcount=31

Here is a large version;

http://www.antiqueairfield.com/types...onversion.html

Re: full presureing a Model A
 

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.

Re: full presureing a Model A
 

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.

Re: full presureing a Model A
 

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.

Re: full presureing a Model A
 

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=47 8da9cdb93cd3bfc02976eee2c19bf0&libId=iaxto9pi01002 5g6000DAc142dygf&loc=http%3A%2F%2Fwww.fordbarn.com %2Fforum%2Fshowthread.php%3Ft%3D171187&v=1&out=htt p%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%20pr esureing%20a%20Model%20A%20-%20The%20Ford%20Barn&txt=http%3A%2F%2Fwww.antiquea irfield.com%2Ftypes...onversion.html

Re: full presureing a Model A
 

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?