Cub smoke and knock

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Willy
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Zip Code: 38330
Tractors Owned: 1951 Cub Lil Red
Location: Dyer, TN

Re: Cub smoke and knock

Postby Willy » Thu Mar 29, 2018 8:31 am

Dale Finch wrote:
areger23 wrote:i would not run it, if you run it you run the risk of ruining the crank or throwing a rod through the block

Like THIS??!! :big what:
20170311_181403 (Small).jpg
20170312_165341 (Small).jpg


A dab of JB Weld and a buffing wheel on it once the JB sets and it'll be like new. Just kidding
Waking up the ol' Cub

Nah, it's not leaking oil. It's just marking it's territory.

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Willy
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Tractors Owned: 1951 Cub Lil Red
Location: Dyer, TN

Re: Cub smoke and knock

Postby Willy » Thu Mar 29, 2018 8:35 am

Waif wrote:
ntrenn wrote:Two kinds of knock...rod knock and wrist pin knock. Rod knock ends up like that horrible picture above. Wrist pin knock can go on indefinitely. The 65 has excessive wrist pin clearance and has knocked for the last 5 years. My 86 s10 with iron duke has knocked for 200,000 miles...but its a wrist pin knock...probably all 4...

An S-10 I had near that year had a Pontiac 4 cylinder.
A flat metal plate of sorts was the cam keeper at one end with some clearance that hinted of a diesel engine sound at times. Many miles on that puppy before I sold it ,running great.


Jeep used that same engine for a couple of years in the early 80s. I had a CJ5 with it and it was near indestructable, even surviving a bad underhood fire that burned up or melted almost everything except the engine itself. You don't see those Jeeps much these days. The engine used a Chevy bellhousing which made them an easy swap to a Chevy V8.
Waking up the ol' Cub

Nah, it's not leaking oil. It's just marking it's territory.

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Indy4570
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Re: Cub smoke and knock

Postby Indy4570 » Thu Mar 29, 2018 9:00 am

Willy wrote:
Waif wrote:
ntrenn wrote:Two kinds of knock...rod knock and wrist pin knock. Rod knock ends up like that horrible picture above. Wrist pin knock can go on indefinitely. The 65 has excessive wrist pin clearance and has knocked for the last 5 years. My 86 s10 with iron duke has knocked for 200,000 miles...but its a wrist pin knock...probably all 4...

An S-10 I had near that year had a Pontiac 4 cylinder.
A flat metal plate of sorts was the cam keeper at one end with some clearance that hinted of a diesel engine sound at times. Many miles on that puppy before I sold it ,running great.


Jeep used that same engine for a couple of years in the early 80s. I had a CJ5 with it and it was near indestructable, even surviving a bad underhood fire that burned up or melted almost everything except the engine itself. You don't see those Jeeps much these days. The engine used a Chevy bellhousing which made them an easy swap to a Chevy V8.


I have a chevette with the isuzu diesel in it. its a wish to make a doodlebug or tractor of some sort with it. I always thought about an S10 transplant. they did run them in the Luv 4x4s
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better to have it and not need it than to need it and not have it...( YES this includes CUBS! )

Terry C
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Re: Cub smoke and knock

Postby Terry C » Thu Mar 29, 2018 10:25 am

Indy4570 wrote:
Willy wrote:
Waif wrote:An S-10 I had near that year had a Pontiac 4 cylinder.
A flat metal plate of sorts was the cam keeper at one end with some clearance that hinted of a diesel engine sound at times. Many miles on that puppy before I sold it ,running great.


Jeep used that same engine for a couple of years in the early 80s. I had a CJ5 with it and it was near indestructable, even surviving a bad underhood fire that burned up or melted almost everything except the engine itself. You don't see those Jeeps much these days. The engine used a Chevy bellhousing which made them an easy swap to a Chevy V8.


I have a chevette with the isuzu diesel in it. its a wish to make a doodlebug or tractor of some sort with it. I always thought about an S10 transplant. they did run them in the Luv 4x4s


I had the diesel chevette also. Got like 50mpg. Engine never died. The rest of the car did.
Terry
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‘55 Fcub
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Willy
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Tractors Owned: 1951 Cub Lil Red
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Re: Cub smoke and knock

Postby Willy » Thu Mar 29, 2018 11:21 am

I had a VW Rabbit diesel. 50-55 MPG when it ran right. But those were prone to warping the head. I ran mine a few years with a warped head, using the thickest head gasket I could find and lots of copper coat. It died when a 3/4 ton GMC 4x4 pickup ran into the back end at a stop light and sandwiched it (and me) into the Caprice in front of me.
Waking up the ol' Cub

Nah, it's not leaking oil. It's just marking it's territory.

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areger23
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Re: Cub smoke and knock

Postby areger23 » Thu Mar 29, 2018 4:22 pm

what does the knocking sound like, someone knocking on a door, or someone tapping on the table. could be fuel knock if it only does it when hot. also wats your oil pressure at

jsfarmall
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Re: Cub smoke and knock

Postby jsfarmall » Thu Mar 29, 2018 6:00 pm

Oil pressure was about ¾ up the gauge on start up and half or a little less after good working. It sounded kinda like a knock on a table maybe. In the driver seat it was a deeper tone sounding knock but sitting next to the engine it got a little higher tone.

I took the oil pan off this afternoon. Found the knock. #4 rod journal is wore alot. Plastigauge showed about .007 clearance. Don't know what I'm gonna do with it yet. This was an engine swap cause original engine wasn't worth the work required. Now I'm back to needing bearings, machine, etc. Rings are also needed at the least. Just kinda disgusted.

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ricky racer
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Re: Cub smoke and knock

Postby ricky racer » Thu Mar 29, 2018 7:18 pm

It's a 60 year old machine. For an investment of around $1500 you can bring the engine back to new specs. It's a lot of money but what else can you buy that will do what a Cub can do or $1500? Maintained, it will last another 60 years. If it's an otherwise good tractor, it's probably worth the investment. If it's been ridden hard and put away wet, I'd put my money into a better example.
1929 Farmall Regular
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1937 John Deere A
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ntrenn
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Re: Cub smoke and knock

Postby ntrenn » Thu Mar 29, 2018 7:34 pm

You now know what a rod knock sounds like....

Btw...the s10 has 304,000 miles on it ...still runs fine...

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Indy4570
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Zip Code: 65608
Tractors Owned: 50 Farmall Cub bugeyes(dead)
51 Farmall Cub
55 Farmall Cub Clementine
55 International loboy
57 International loboy
62 140 Industrial The Beast
50s Allis Chalmers B
50 Ferguson TO20 Huppster
49 Ferguson TE20 Fergie
JD 790 4x4 w/backhoe
Gilson 18HP
various other GTs
Circle of Safety: Y
Location: Missouri Ozarks

Re: Cub smoke and knock

Postby Indy4570 » Thu Mar 29, 2018 8:38 pm

you could be facing this repair, want to trade? (I am a lil disgusted too ) Don't forget the engine break too

I got the nose, Hood/tank, radiator, bolster off it today. I got the old weld removed and it ground out for new weld today but cant find any nickle or cast iron rod on the place so...JB weld should fix that right up don't you think?
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