Cub 154 engine to F-Cub

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Shane Nelson
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Cub 154 engine to F-Cub

Postby Shane Nelson » Thu May 17, 2018 12:50 pm

Will an engine from a 154 loboy fit in an F-Cub? I know nothing about loboy 154's and have the chance to buy one for a pretty good price and am just wondering if the engine will fit. What are the advantages other than 4-5 more HP and more RPM?
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LRiddle
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Re: Cub 154 engine to F-Cub

Postby LRiddle » Thu May 17, 2018 2:03 pm

I know the block casting is different to fit the larger 12v starter. And also, the crank doesn't have a pilot bushing, but I suspect you'd be able to take care of that.
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inairam
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Re: Cub 154 engine to F-Cub

Postby inairam » Thu May 17, 2018 2:13 pm

LRiddle wrote:I know the block casting is different to fit the larger 12v starter. And also, the crank doesn't have a pilot bushing, but I suspect you'd be able to take care of that.


It is my understanding the some of the early 154s did have the pilot hole drilled in the crank.
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staninlowerAL
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Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
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Re: Cub 154 engine to F-Cub

Postby staninlowerAL » Thu May 17, 2018 3:04 pm

I believe the block casting is the same as other cubs for that year, starter will bolt in place, crank pulley is different as well as the charging system. Some guys have said the crank may not be drilled for the pilot bushing but that's fixable. Governor has different weights, original head is R2, aluminum domed pistons, early 154's had IH carb and might not have the larger ported manifold for the Zenith carb. Might be some other changes that I can't think of. As for transplanting a 154 engine into a FCub, it's been done. Rockfarmer did it a few years ago, I have the remaining parts for spares for mine.

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rockfarmer
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Re: Cub 154 engine to F-Cub

Postby rockfarmer » Thu May 17, 2018 6:30 pm

Shane, the engine I transplanted was from a '71 154. The pilot bushing hole was already in the block so it was easy to rebuild. Machine shop overbored 0.03" and installed new pop up pistons and a did a valve job. I run the zenith with 1.5" pipe. No problems so far. I think the block might have been 1/4 " longer than a standard cub...I'm sure someone will chime in on that soon.. I did not measure but remember the ears being thicker where they mount to the front bolster. That and the dash seems to be slanted a little more forward than my other cubs.

FYI...It sounds better at 2200 rpm than at 900 rpm.

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Shane Nelson
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1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original
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Location: Oak Ridge, N.C.

Re: Cub 154 engine to F-Cub

Postby Shane Nelson » Fri May 18, 2018 5:10 am

Thank you everyone for the info. Here’s the tractor. It may take a year to get it, the owner is restoring another one and wants to keep this one until he’s done. He sent me these photos. I don’t need it but the price is right.
Attachments
7F6E9ED2-3E00-4883-A66D-1A9AF17D9BCB.jpeg
AE581C0F-F4AF-482B-8FFD-D132DBAF8021.jpeg
God is good, all the time!
Every home is a school, what are you teaching?
Make prayer a 1st priority, instead of a last resort.
Circle of Safety

staninlowerAL
5+ Years
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Posts: 3520
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Zip Code: 36558
Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: Cub 154 engine to F-Cub

Postby staninlowerAL » Fri May 18, 2018 7:30 am

That's a decent looking 154. Even the grill doesn't look busted up.

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Shane Nelson
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Zip Code: 27284
Tractors Owned: .
1947 Circle Cub #1447 (Arnold)
195? Cub
1970 International 140 (Norman)
1949 John Deere A
1972 Schramm Pneumatractor
1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original
Circle of Safety: Y
Location: Oak Ridge, N.C.

Re: Cub 154 engine to F-Cub

Postby Shane Nelson » Fri May 18, 2018 7:33 am

staninlowerAL wrote:That's a decent looking 154. Even the grill doesn't look busted up.

It does look good from the pictures, I haven't seen it in person. I've known the guy 25 years and didn't even know he had this tractor.
God is good, all the time!
Every home is a school, what are you teaching?
Make prayer a 1st priority, instead of a last resort.
Circle of Safety

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Willy
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Re: Cub 154 engine to F-Cub

Postby Willy » Fri May 18, 2018 9:19 am

Just from the pictures, it looks good enough I wouldn't part it out.
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