154 engine

[john2189]

Was the crank bored for the trans pilot bearing on any of the 154 engines so they could be used for an f cub?

[Eugene]

Some crankshafts were bored, some weren't. If it's an early 154, there is a decent chance the crankshaft wasn't bored.

[john2189]

It’s a 71. If the motor is original

[outdoors4evr]

The I&T manual indicates the change occurred on the 154 at serial number U01870. (last character not shown in manual)
154 Serials before would not have been drilled.

According to RaymondDurban's Database, the change is specifically at 018709 which was late 1970.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=87029
There aren't any engine serial numbers listed from 1970 or 1971 in the database, but you should probably investigate engine serial rather than tractor serial.

[john2189]

Thanks

[indy61]

The I&T manual indicates the change occurred on the 154 at serial number U01870. (last character not shown in manual)
154 Serials before would not have been drilled.

According to RaymondDurban's Database, the change is specifically at 018709 which was late 1970.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=87029
There aren't any engine serial numbers listed from 1970 or 1971 in the database, but you should probably investigate engine serial rather than tractor serial.

That's interesting. Looks like engines for the numbered series prior to chassis serial number 018709 had an engine prefix of FCUBM and after had 60CT2U.

[john2189]

The I&T manual indicates the change occurred on the 154 at serial number U01870. (last character not shown in manual)
154 Serials before would not have been drilled.

According to RaymondDurban's Database, the change is specifically at 018709 which was late 1970.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=87029
There aren't any engine serial numbers listed from 1970 or 1971 in the database, but you should probably investigate engine serial rather than tractor serial.

That's interesting. Looks like engines for the numbered series prior to chassis serial number 018709 had an engine prefix of FCUBM and after had 60CT2U.

So I take it that fcubm prefix has the drilled crank.

[Eugene]

I take it that fcubm prefix has the drilled crank.

I wouldn't take anything as a positive when it comes to tractors almost 70 years old. The crankshaft could have been changed for some/any reason.

[Rick Spivey]

The I&T manual indicates the change occurred on the 154 at serial number U01870. (last character not shown in manual)
154 Serials before would not have been drilled.

According to RaymondDurban's Database, the change is specifically at 018709 which was late 1970.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=87029
There aren't any engine serial numbers listed from 1970 or 1971 in the database, but you should probably investigate engine serial rather than tractor serial.

That's interesting. Looks like engines for the numbered series prior to chassis serial number 018709 had an engine prefix of FCUBM and after had 60CT2U.

So I take it that fcubm prefix has the drilled crank.

Maybe I am mis-interpreting all the info above, but I would read it that (possibly) engines with the 60CT2U would be drilled, the FCUBM would not.....Eugene's info indicated that later engines were likely drilled....???

[john2189]

That's interesting. Looks like engines for the numbered series prior to chassis serial number 018709 had an engine prefix of FCUBM and after had 60CT2U.

So I take it that fcubm prefix has the drilled crank.

Maybe I am mis-interpreting all the info above, but I would read it that (possibly) engines with the 60CT2U would be drilled, the FCUBM would not.....Eugene's info indicated that later engines were likely drilled....???

Mabey so but doesn’t the F Cubs have the fcubm motor? If so wouldn’t they have been drilled for the pilot bearing?

[Eugene]

May be so but doesn’t the F Cubs have the fcubm motor? If so wouldn’t they have been drilled for the pilot bearing?

The IH C60 engine was used in machines other than tractors; boat motors, carnival rides, ag machines such as balers and combines.

Drilling the pilot hole in the crankshaft cost IH money. If IH was planning building a number of engines that didn't require the pilot bushing, they wouldn't drill the hole.

There is a very good chance that the engine in your 1971 year tractor has been overhauled at least once or changed. What's inside the engine block is a best estimate.

[john2189]

May be so but doesn’t the F Cubs have the fcubm motor? If so wouldn’t they have been drilled for the pilot bearing?

The IH C60 engine was used in machines other than tractors; boat motors, carnival rides, ag machines such as balers and combines.

Drilling the pilot hole in the crankshaft cost IH money. If IH was planning building a number of engines that didn't require the pilot bushing, they wouldn't drill the hole.

There is a very good chance that the engine in your 1971 year tractor has been overhauled at least once or changed. What's inside the engine block is a best estimate.

Ok but wouldn’t the balers, and etc. have a different prefix to signify what they were built for?

[SONNY]

Most likely they would have same prefix since they were all c-60 motors. ---Doubt that IH kept records very close back then. ---during assembly they threw whatever was in the bin closest at hand and were not concerned what that motor was going into.
Only way to tell for sure is to look at the one you have and then you will know positive what it is.

[BigBill]

A crank with no pilot hole could be drilled and reamed in a lathe using a steady rest on the crank journal. I polished and turned 360 degree con rod oil pressure grooves in a lathe.