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Cub Engine Block Fitting
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Dthompso
- Posts: 4
- Joined: Sat Aug 21, 2021 9:50 pm
- Zip Code: 75503
Re: Cub Engine Block Fitting
Mine screwed in and was leaking so that was why I removed the fitting. Wasn’t sure what it was until it came out.
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indy61
- 10+ Years
- Posts: 1431
- Joined: Fri Jan 25, 2008 9:02 am
- Zip Code: 00000
- Circle of Safety: Y
Re: Cub Engine Block Fitting
The block casting date of 5 4 V indicates a 1951. I think the engine has been replaced, perhaps from a power unit.
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Jim Becker
- Team Cub
- Posts: 17278
- Joined: Sun Feb 02, 2003 2:59 pm
- Zip Code: 55319
- Circle of Safety: Y
- Location: MN
Re: Cub Engine Block Fitting
As indy61 said, a V date code means 1951, while your serial number is for a '55 Lo-Boy. I am also not sure how to interpret your "stamped block # is 35574R4". Are you saying that an original cast in part number was ground off and this number stamped in to replace it? A 5 digit "R" part number is unusual. The Cubs did have several six digit "R" numbers that started with "3557". It could be a number for some power unit or industrial part that isn't listed in an agricultural parts catalog. What is the engine number (stamped directly into the engine block near the carburetor)?
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tnestell
- 10+ Years
- Posts: 595
- Joined: Mon Feb 03, 2003 2:01 am
- Zip Code: 48609
- Circle of Safety: Y
- Location: Mi, Saginaw
Re: Cub Engine Block Fitting
Jim Becker wrote:As indy61 said, a V date code means 1951, while your serial number is for a '55 Lo-Boy. I am also not sure how to interpret your "stamped block # is 35574R4". Are you saying that an original cast in part number was ground off and this number stamped in to replace it? A 5 digit "R" part number is unusual. The Cubs did have several six digit "R" numbers that started with "3557". It could be a number for some power unit or industrial part that isn't listed in an agricultural parts catalog. What is the engine number (stamped directly into the engine block near the carburetor)?
On my engine, just above the oil pan is a stamped 355741R6. Just below the valve cover is stamped 60CU2U2013344X and just behind the carb. It was hard to read because the hydraulic lines are in front.
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Jim Becker
- Team Cub
- Posts: 17278
- Joined: Sun Feb 02, 2003 2:59 pm
- Zip Code: 55319
- Circle of Safety: Y
- Location: MN
Re: Cub Engine Block Fitting
Jim Becker wrote:. . . "stamped block # is 35574R4". . . . A 5 digit "R" part number is unusual. The Cubs did have several six digit "R" numbers that started with "3557". It could be a number for some power unit or industrial part that isn't listed in an agricultural parts catalog. . . .
tnestell wrote:On my engine, just above the oil pan is a stamped 355741R6. Just below the valve cover is stamped 60CU2U2013344X and just behind the carb. It was hard to read because the hydraulic lines are in front.
That makes sense. The final digit "1" was probably lost in amidst the inverted "4" punching error. That number (a bare engine block) isn't going to show up in parts lists because replacement blocks are always an assembly with another part number. (I should have thought about that earlier.)
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