Case CrankShaft 1070

JPB 1070

New User
I have a 1974 1070 case. I pulled the crank out to replace bearings before we built the engine. And i noticed the crank is not counter Weighted. Is that normal for these engine. I would think it would make them weak.
I have a 504 turbo engine out of a 2290, would that crank be better suited to last longer under a high horsepower machine? Thanks Guys
 
Believe it or not the 1070 and 2290 use the same crank, also known as the small journal crank. The large journal crank will not fit in those blocks. These are found in 1370, 2390 and larger tractors. Rod.
 
Are these small journal cranks very strong? This is in a pulling tractor, and it looks like both engines I have to work with are small crank engines.
 
I have seen them break in farm tractors but only after a repair. That is a question best posted again for the pulling guys, Rod.
 
(quoted from post at 16:06:16 12/23/12) I have seen them break in farm tractors but only after a repair. That is a question best posted again for the pulling guys, Rod.

What sort of repair? Grinding the wrong radius?
 
After a con-rod brg spun and damaged the journal. Our local machine shop sends them someplace,where i don't know. They comeback looking like new. In past years I had this done to 3, after a couple hundred hrs everyone broke in the crank throw next to the repaired journal. Ever since, about 20 yr ago, when I get a crank damaged like that they go in the junk. I hate like hell to do that but I can't afford to redo them. I just tossed out one out of a 1070, nice looking crank but one damaged journal, I have no other choice, Rod.
 
(quoted from post at 14:57:47 12/23/12) After a con-rod brg spun and damaged the journal. Our local machine shop sends them someplace,where i don't know. They comeback looking like new. In past years I had this done to 3, after a couple hundred hrs everyone broke in the crank throw next to the repaired journal. Ever since, about 20 yr ago, when I get a crank damaged like that they go in the junk. I hate like hell to do that but I can't afford to redo them. I just tossed out one out of a 1070, nice looking crank but one damaged journal, I have no other choice, Rod.

I totally agree Rod, I have seen the same thing happen several times. Crank welders can do a beautiful job at rebuilding the journal but getting the tempering back to new is imposssible for the average rebuilder. There are various methods but with mixed sucess. It's just not worth the risk.

mEl
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top