Allis CA

 Thanks! 

Still working on putting up tubing systems, to maybe make some syrup in the next few weeks. Getting too old for this stuff! Cheryl rode along in the truck for about 2 hours today with me. Not sure why she has put up with me this long?

Regards,

 Chris and Cheryl

A friend has shown interest in making sorghum sweetener. Some of the maple equipment we use today has design history in the sourgham production process. 

The CA project got a small push forward today as Cheryl and I visited Brenda at Sandy Lake IMP to exchange some extra Allis parts with some needed parts for this old tractor project. Great to have her help with parts and information as we work on these Allis projects!

Regards,

 Chris and Cheryl

Tap the oil wick hole in the rear of the crankshaft and thread a suitable bolt in there to hold the degree wheel.

Edit: Use threaded rod rather than a bolt so as to be able to secure the degree wheel with two nuts

 Thanks! I printed out a couple of the wheels at 150% size. I will think about the rear of the crank for mounting too.

trying to learn something new. I am not an engine builder. But I would like this old CA to run well. 

So today I took the head off and have removed the remaining gasket material from the

block:

Still need to clean the gasket material from the head:

back to the block final cleaning to follow:

Also sketched out the fitting if I decide to attach the degree wheel to the front of the crank snout. But I like the idea on the back of the crank.

We are in cold weather conditions. Our driveway is solid ice. We got snow last night which I thought might help a little with traction. NOT! I went to cross the drive and fell on my back and hit my head on the ice. Crawled back to the shop and mostly hurt my pride. 

Regards,

 Chris and Cheryl

The only valve timing specs I have are for a Model C from a 1950 edition of Chilton's Motor Age Flat Rate and Service Manual, and the specs are incomplete as they only give the valve timing at the overlap position, but it is a starting point.

Tappet Clearance for Valve Timing: 0.010" Inlet, 0.010" Exhaust

Inlet Valve Opens: TDC

Exhaust Valve Closes: 10 Degrees ATDC

I interpret this to mean that 0.010" lifter rise on Intake should occur at TDC, and at 10 degrees ATDC the lifter should have 0.010" before bottoming out.

I hope someone will chime in with full cam specs; the search function on this site is very poor. You cannot search for anything that has less than three letters in the word, so searching for a Model C or CA doesn't work.

  Although in all seriousness when we first conversed as he started this project, he informed me his local pull are the Grampa Gear restricted type and with the slow ratio low gears a CA has, As long as the engine runs balance is more important than power. He's going to have a beautiful tractor when he's done. 

Not expecting much improvement in CA horsepower, if we get the new 175 grind cam issue resolved.

Made a run at the checking of the cam specs today, more to learn and do. Just some random pictures.

May pick up a couple sets of plugs for that first pull.

The original goal of this cam change was to replace the original cam because of worn lobes. Did it run? Yes it did.

Regards,

 Chris and Cheryl

So I was able to spend some additional time playing with the cam and its location. My systems and tools are rather crude but continue to improve and learn on this degreeing thing. Will have some questions. Some of these things no one will ever use!

Note I added a stiff angle bracket out the front to do two things. First I can mount the dial indicator base in a place. I can see the dial while I use a bar to turn the crank at the back of the block. Second I can use this bracket to stop the piston before TDC in both directions.

A small short socket provided the stop, about 3/4 inch below TDC. Checked the degree wheel numbers both ways and averaged those to get the wheel set on the snout of the crank.

The magnets worked very well to hold the degree wheel in place:

On the back of the stiff paper wheel I added a circle to see if the paper was moving. The magnets held the wheel fine. Saved building a tool I would not use again. Good suggestion by Les.

Shot of the cam in current location.

Ok some numbers. 

The cam lift is .260 About .004 shy of the spec. But after about 10 checks that's what it is.

The intake cam lobe center-line spec was 105.4 degrees ATDC. I watched some additional videos and began using the .050 inch before and after the top of the cam lobe inspection method.(as mentioned above)  And then checking the degree wheel numbers and averaging them to get the actual cam lobe center-line number.   After another 6 checks of the center-line I have determined it is approx 111 degrees ATDC therefore 5.6 degrees more than the spec. Checked about 6 times and I feel this is correct. 

So next will be to plan the cam and gear work required to get this back near the correct location.

Regards,

 Chris and Cheryl