Engine rebuild 1949 Cub.

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Flyboy
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Engine rebuild 1949 Cub.

Postby Flyboy » Sun Aug 09, 2015 7:19 pm

I just got the project home and knew that it was going to take a little effort to get it going. So, today I removed the hood, generator, air filter, head and exhaust manifold. I have a considerable amount of work to do. The valves are packed with some kind of hard crud. The exhaust ports in the head and block are also blocked with a blue/gray substance that is hard on the outside and like a hard dirt clay mix once you get in a little. The air intake ports are mostly clear. I haven't tried to rotate the engine to see if the Pistons are stuck because Idont have a crank and the battery is shot.

So, I am assuming I will need to have the head milled and replace all parts associated with the head. I am beginning to think that the cylinders will need to be bored. So here are the questions:

1. Should I have the head milled or just buy one from Steiner......
2. If I buy one, are they ready to build, or do they need to be taken somewhere to have the valve seats ground...
3. If the block needs to be bored, how much over should I go (one website asks .010, .020, .030, .040, and .060
When you are pricing parts)
4. What kind of shop should I seek out to do the work?

Thanks.

RogerW
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Re: Engine rebuild 1949 Cub.

Postby RogerW » Sun Aug 09, 2015 8:22 pm

I had my 53 overhauled last year by a local machine shop/parts house. He said the engine had never been apart before. I don't know how much he had to bore it, but no more than needed to clean up cylinders. I believe he re-used the valves, just had top grind them, but replaced the guides. Had to grind the crank also. I would not bore it any farther than needed. He did plane the head just enough to make sure it was flat. Cost me about $1400.

staninlowerAL
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Re: Engine rebuild 1949 Cub.

Postby staninlowerAL » Sun Aug 09, 2015 9:04 pm

You will be ahead of the game if you download the free parts and service manuals at the top of this page and study all the information related to engine rebuilding. Any information that you need is in the manuals, if you can't find it, post specifics and someone will answer your questions. If you want to spend the dollars, a good auto machine shop will hand you a complete rebuilt engine for around $2500. If you want to do the labor you can save about half of that amount.

Eugene
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Re: Engine rebuild 1949 Cub.

Postby Eugene » Sun Aug 09, 2015 9:41 pm

On this site, the Tractor Pride Forum has photos of quite a number of Farmall Cubs.

The C-60 Cub engine is a flat head. The head has no valves, intake, or exhaust ports.

Your description of the head doesn't match the C-60 engine.
I have an excuse. CRS.

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Re: Engine rebuild 1949 Cub.

Postby CapeCodCubs » Mon Aug 10, 2015 10:05 pm

Eugene, wonder what tractor he has and believes it to be a Cub?
Image

Eugene
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Re: Engine rebuild 1949 Cub.

Postby Eugene » Mon Aug 10, 2015 10:30 pm

CapeCodCubs wrote:Eugene, wonder what tractor he has and believes it to be a Cub?
Could be a Cub, but from the description of the head, it doesn't sound like a Cub.

There are enough individuals on this site who own and have worked on IH as well as other makes of tractors - that we can identify the tractor from photos of the tractor and engine.

Flyboy: Do not order any parts or engine work until the tractor and engine has been identified.
I have an excuse. CRS.

staninlowerAL
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Re: Engine rebuild 1949 Cub.

Postby staninlowerAL » Tue Aug 11, 2015 2:53 pm

You might consider a visit to ROCKY MT CUBFEST. Near Denver in about a month, you won't be disappointed.
viewtopic.php?f=8&t=89356

Flyboy
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Re: Engine rebuild 1949 Cub.

Postby Flyboy » Tue Aug 11, 2015 9:15 pm

It is a Cub. I found it in a field near a friends house and was told I could have it if I could get it out of the field. so, I dragged it home and started taking it apart to see what it would take to get it going. I haven't seen a cub since I was a kid, and did a poor job of describing what I found in my post. I had driven 800 miles the two days prior, and was fasting for a medical procedure the next day, so I wasn't my usual self. If you want to PM each other about "what kind of tractor I might have", that fine, but talking to each other on this thread is inappropriate.

I found the exhaust manifold clogged up with a hard dark colored crusty material. The head has some crud around the edges near the spark plugs. And the engine block ports and valves were clogged except two that were mostly clogged up.
I would be happy to post pictures if I knew how. It is my uneducated opinion that this tractor will require boring the cylinders and a valve job, but I will leave the final assessment to the engine shop. At that point I will know what parts I need to purchase to finish the engine portion of this project.

For those of you who offered sincere advice, I appreciate it greatly. I am an expert at airplanes, not tractors. That's why I came here.

Eugene
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Re: Engine rebuild 1949 Cub.

Postby Eugene » Tue Aug 11, 2015 10:00 pm

Flyboy wrote:If you want to PM each other about "what kind of tractor I might have", that fine, but talking to each other on this thread is inappropriate.
Really? What was posted that was inappropriate?

Not sure, but I think I could have done a global PM to the several thousand members of this site to make a statement such as "This guys description of the engine head doesn't match a C-60."

If you spend some time on this site you will find that there is frequently a discussion (talking to each other) concerning the posted topic.

I am an expert at airplanes, not tractors. That's why I came here.
Great, and welcome.
I have an excuse. CRS.

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Re: Engine rebuild 1949 Cub.

Postby Bob McCarty » Tue Aug 11, 2015 10:02 pm

staninlowerAL wrote:You might consider a visit to ROCKY MT CUBFEST. Near Denver in about a month, you won't be disappointed.
viewtopic.php?f=8&t=89356


Flyboy, The Rocky Mtn. Cubfest will be on Sept. 11-12, four miles north of Longmont. There will be about 15-20 Cub lovers here who will work on their tractors or "parts" they have brought (carbs, hydraulic pumps, etc.). You're invited to come with or without your Cub. If you can bring the Cub, we can help you evaluate it. Last year Barnyard brought a Cub that had a stuck engine, and by the end of the weekend it was running (although roughly). Let me know if you need more info.

Bob
"We don't need to think more,
we need to think differently."
-Albert Einstein

Flyboy
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Re: Engine rebuild 1949 Cub.

Postby Flyboy » Tue Aug 11, 2015 10:50 pm

Eugene, my apologies. It sounded like he was belittling me. Thank you for the information. I will try to make it to the cubfest if my schedule permits.

Can someone tell me how to post pictures, if it is possible in these threads.

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Bill V in Md
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Re: Engine rebuild 1949 Cub.

Postby Bill V in Md » Wed Aug 12, 2015 7:06 am

Flyboy wrote:Can someone tell me how to post pictures, if it is possible in these threads.


Flyboy, check out the below post by Dennis in the How To Forum. You can practice posting photos in the Sandbox forum to make sure you got the technique correct.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=148&t=86348
Bill VanHooser
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Flyboy
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Re: Engine rebuild 1949 Cub.

Postby Flyboy » Wed Aug 12, 2015 8:15 am

Thank you Bill.

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Re: Engine rebuild 1949 Cub.

Postby gtc4d » Wed Aug 12, 2015 10:05 am

welcome flyboy,
I am new to cubs as well, I bought a 48 that was locked up and had a bent rod from someone trying to start it by towing it when it had water in the cylinder. EVERYONE on this site has been very helpful to me. There is tons of knowledge both in manuals and in personal experience. If you think your motor is locked up, squirt plenty of marvel mystery oil or eq. and let it soak. also if you take the carb apart to clean it beware there is a very small tube that will break and will cost 20-50 bucks for a replacement. don't ask how I know. I just found this site too late.
My 48 is now running pretty well, but I plan to work more on it this winter. Good Luck and have fun.

Todd

Flyboy
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Re: Engine rebuild 1949 Cub.

Postby Flyboy » Sun Aug 16, 2015 10:00 am

I cant seem to find the service manual on this site. Can someone point me in that direction.


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