154 engine

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john2189
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154 engine

Postby john2189 » Tue Aug 04, 2020 8:44 am

Was the crank bored for the trans pilot bearing on any of the 154 engines so they could be used for an f cub?
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'71 154 Cub Lo-Boy
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Re: 154 engine

Postby Eugene » Tue Aug 04, 2020 11:01 am

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

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Re: 154 engine

Postby john2189 » Tue Aug 04, 2020 11:43 am

It’s a 71. If the motor is original
'49 Cub (Vince)
'72 cub (Cecilia)
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'42 Allis B
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Re: 154 engine

Postby outdoors4evr » Wed Aug 05, 2020 8:09 am

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.
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john2189
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Re: 154 engine

Postby john2189 » Wed Aug 05, 2020 8:40 am

Thanks
'49 Cub (Vince)
'72 cub (Cecilia)
'41 allis B
'42 Allis B
'71 154 Cub Lo-Boy
656 Wheel Horse
C-165 Wheel Horse
Simplicity 20 HP Sunstar

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indy61
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Re: 154 engine

Postby indy61 » Wed Aug 05, 2020 1:29 pm

outdoors4evr wrote: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.

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Re: 154 engine

Postby john2189 » Wed Aug 05, 2020 9:55 pm

indy61 wrote:
outdoors4evr wrote: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.
'49 Cub (Vince)
'72 cub (Cecilia)
'41 allis B
'42 Allis B
'71 154 Cub Lo-Boy
656 Wheel Horse
C-165 Wheel Horse
Simplicity 20 HP Sunstar

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Re: 154 engine

Postby Eugene » Wed Aug 05, 2020 10:32 pm

john2189 wrote: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.
I have an excuse. CRS.

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Re: 154 engine

Postby Rick Spivey » Thu Aug 06, 2020 6:30 am

john2189 wrote:
indy61 wrote:
outdoors4evr wrote: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....???
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Re: 154 engine

Postby john2189 » Thu Aug 06, 2020 8:03 am

Rick Spivey wrote:
john2189 wrote:
indy61 wrote: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?
'49 Cub (Vince)
'72 cub (Cecilia)
'41 allis B
'42 Allis B
'71 154 Cub Lo-Boy
656 Wheel Horse
C-165 Wheel Horse
Simplicity 20 HP Sunstar

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Re: 154 engine

Postby Eugene » Thu Aug 06, 2020 8:27 am

john2189 wrote: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.
I have an excuse. CRS.

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Re: 154 engine

Postby john2189 » Thu Aug 06, 2020 9:56 am

Eugene wrote:
john2189 wrote: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?
'49 Cub (Vince)
'72 cub (Cecilia)
'41 allis B
'42 Allis B
'71 154 Cub Lo-Boy
656 Wheel Horse
C-165 Wheel Horse
Simplicity 20 HP Sunstar

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SONNY
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Re: 154 engine

Postby SONNY » Thu Aug 06, 2020 2:30 pm

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.

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Re: 154 engine

Postby BigBill » Fri Aug 28, 2020 9:43 pm

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.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.


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