engine upgrade

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.
10+ Years
10+ Years
Posts: 306
Joined: Thu Jul 17, 2003 10:49 pm
Location: KATY, TEXAS

engine upgrade

Postby LARRY BALL » Thu Oct 07, 2004 2:34 pm

Has anyone successfully upgraded C-60 engine to a higher horsepower late model motor? if so, how was it accomplished? I wouldn't think by raising the compression ratio ,via different pistons, this would give more horsepower, only higher compression ratio. Or is it as I expect, "just not worth the expense and hassle" :roll: :roll: :roll:

User avatar
John *.?-!.* cub owner
Team Cub Guide
Team Cub Guide
Posts: 22536
Joined: Sun Feb 02, 2003 2:09 pm
Zip Code: 63664
Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
Location: Mo, Potosi

Postby John *.?-!.* cub owner » Thu Oct 07, 2004 7:00 pm

Never tried it myself, but from previous posts it appears there are several steps to ge the full benefits. The head has to be changed or some grinding done to clear the domed pistons, the intake manifold and carb have to be upgraded to the newer model, and the cam shaft has to be changed. Now that I've scared you with all that, you can get a gain by just putting in the domed pistons and grindidng the spots in the head. If your engine is worn you'll be amazed at the gain just from a rebuild.
If you are not part of the solution,
you are part of the problem!!!

User avatar
Lurker Carl
Cub Pro
Cub Pro
Posts: 3968
Joined: Mon Feb 03, 2003 9:54 am
Zip Code: 16685
Circle of Safety: Y
Location: PA, Todd

Postby Lurker Carl » Thu Oct 07, 2004 9:26 pm

Don't forget, increase the RPM's! That in itself probably produces the most HP gain. I don't think the 154 engine provided 15 HP, nor the 185-184 series provided 18 HP. Wishful thinking coming from the advertising department.

The domed pistons are not domed like a hemi. Only a portion of the piston is raised, shaped like a U. Picture 1/4 of the piston is diked for a dam, hardly powerful in appearance. It is not what I expected - I thought it was a damaged piston!

Mike Schmudlach
10+ Years
10+ Years
Posts: 568
Joined: Wed Feb 05, 2003 11:15 pm
Location: Brooklyn, Swissconsin

Postby Mike Schmudlach » Thu Oct 07, 2004 10:56 pm

The French Super Cubs increased the horspower by using a different carb and raised the rpms up to 2,000.
IH designers had a higher horsepower cub on the drawing board early on.
It was even called a "Super" Cub. It used a different head ( I believe one from the Cub baler engine.) There were also some other differences. I will have to dig out the blueprints I have on it from IH.
30 + tractors including 2 French Super Cubs, French Cubs, 1963 Industrial Cub, 1955 Cub Highcrop etc...German and French built IH tractors and some bigger IH tractors. Of course I have about 20 IH trucks and an IH refridge in the Shop.

Oscar Meier
10+ Years
10+ Years
Posts: 237
Joined: Wed Jul 09, 2003 11:03 am
Location: Danville, Indiana

Postby Oscar Meier » Fri Oct 08, 2004 9:20 am

Not to be a poop - it would be easier to just get an A or Super A and, most likely, you would end up spending the same money.

My son and I work on trucks a little and just a few modifications add up quickly. If you were going to do a rebuild anyway - the domed pistons and a little grinding wouldn't be bad. I don't know anything beyond that would be worth it.
48 CUB & 52 Super A

User avatar
Cub Pro
Cub Pro
Posts: 24141
Joined: Sun Feb 02, 2003 12:50 pm
Zip Code: 43113
Circle of Safety: Y
Location: OH, Circleville

Postby Bigdog » Fri Oct 08, 2004 9:34 am

Larry, George Willer is in the process of installing the engine from a 154 cub lo-boy into a standard cub. He may be able to answer your questions.
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!



  • Similar Topics
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 2 guests