Blue Smoke

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Little Indy
10+ Years
10+ Years
Cub Star!!
Cub Star!!
Posts: 286
Joined: Thu Nov 04, 2004 11:50 pm
eBay ID: falco-de-fiume
Location: NE, Cheney

Blue Smoke

Postby Little Indy » Fri Dec 03, 2004 2:15 pm

Recently bought a farmall cub 1951 model. The engine makes a lot of blue smoke when running. If I decide to rebuild the engine
do I go for a short block?
Rebore the existing block and get oversize psitons and rings? Source?
Any steps I should take before deciding on a rebuild?
Breather tube check?
Run at high temp for a while?
Any ideas?
Si hoc legere scis,nimium eruditionis habes.

User avatar
Bigdog
Cub Pro
Cub Pro
501 Club
501 Club
Posts: 24066
Joined: Sun Feb 02, 2003 12:50 pm
Zip Code: 43113
Circle of Safety: Y
Location: OH, Circleville

Postby Bigdog » Fri Dec 03, 2004 2:24 pm

You don't mention the rate of oil consumption but I'd wager it's time for a rebuild. You might check J.P. Tractor Salvage for a short block. Or, check with Justin Weber (nosih on this forum) to see if he still has any of the nos blocks available. You could check with a local machine shop to see what they would charge for a rebore and associated parts. Certainly you should check the vent tube but if it's blowing blue smoke all of the time, it's no doubt more than that.

Price out the options available to you and you will then know which one makes the most sense.
Bigdog
If you can't fix it with a hammer, you've got an electrical problem.

My wife says I don't listen to her. - - - - - - - - Or something like that!

Image

http://www.cubtug.com

Eugene
Team Cub Mentor
Team Cub Mentor
501 Club
501 Club
Posts: 15056
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Blue Smoke

Postby Eugene » Fri Dec 03, 2004 2:47 pm

Run a compression check if you haven't already done so.

Clean the breather tube, air cleaner and cap on the dip stick. Change the oil (use detergent oil), filter and add some type of solvent to loosen up stuck rings. Run the tractor for a while (10 to 20 hours) to see what happens. This will give you a chance to check oil consumption and the condition of the oil. Check the oil condition after a couple of hours of operation. You may need to do a couple of rapid oil changes.

If the engine needs rebuilding these won't help but will give you a head start on the overhaul.

Eugene

Eugene
Team Cub Mentor
Team Cub Mentor
501 Club
501 Club
Posts: 15056
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Blue Smoke

Postby Eugene » Sat Dec 04, 2004 1:16 am

One more thought. Check the fuel level in the carburator bowl. If the fuel level is set to high you will get a lot of smoke.


Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 2 guests