smoking from rebuilt

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
garlicman
Posts: 11
Joined: Sun Jan 15, 2017 7:03 am
Zip Code: 13205

smoking from rebuilt

Postby garlicman » Wed Jan 18, 2017 1:35 pm

my 56 cub stills smokes a little after 20 hrs on the rebuilt engine. Is this normal ?

User avatar
Shane Nelson
501 Club
501 Club
Posts: 1644
Joined: Wed Nov 22, 2017 6:24 am
Zip Code: 27284
Tractors Owned: .
1947 Cub #1447 (Arnold)
1949 Cub (Walt)
1949 John Deere A
1972 Schramm Pneumatractor
1993 Ford 4630
1965 John Deere 110
1961 Cub Cadet Original
Circle of Safety: Y
Location: Oak Ridge, N.C.

Re: smoking from rebuilt

Postby Shane Nelson » Wed Jan 18, 2017 1:48 pm

Did you bore it or just put rings in it?
God is good, all the time!
Circle of Safety

garlicman
Posts: 11
Joined: Sun Jan 15, 2017 7:03 am
Zip Code: 13205

Re: smoking from rebuilt

Postby garlicman » Wed Jan 18, 2017 1:50 pm

I was told it only had new rings

User avatar
Shane Nelson
501 Club
501 Club
Posts: 1644
Joined: Wed Nov 22, 2017 6:24 am
Zip Code: 27284
Tractors Owned: .
1947 Cub #1447 (Arnold)
1949 Cub (Walt)
1949 John Deere A
1972 Schramm Pneumatractor
1993 Ford 4630
1965 John Deere 110
1961 Cub Cadet Original
Circle of Safety: Y
Location: Oak Ridge, N.C.

Re: smoking from rebuilt

Postby Shane Nelson » Wed Jan 18, 2017 1:53 pm

Probably needed boring if it's still smoking after 20 hours. I rebuilt one recently and it had been bored .030" over previously and it all measured in tolerance so I only put rings in it and it hasn't smoked at all.
God is good, all the time!
Circle of Safety

garlicman
Posts: 11
Joined: Sun Jan 15, 2017 7:03 am
Zip Code: 13205

Re: smoking from rebuilt

Postby garlicman » Wed Jan 18, 2017 1:56 pm

what is the down side if I don't have it bored. I was told it did not have to be bored.

User avatar
Shane Nelson
501 Club
501 Club
Posts: 1644
Joined: Wed Nov 22, 2017 6:24 am
Zip Code: 27284
Tractors Owned: .
1947 Cub #1447 (Arnold)
1949 Cub (Walt)
1949 John Deere A
1972 Schramm Pneumatractor
1993 Ford 4630
1965 John Deere 110
1961 Cub Cadet Original
Circle of Safety: Y
Location: Oak Ridge, N.C.

Re: smoking from rebuilt

Postby Shane Nelson » Wed Jan 18, 2017 1:59 pm

It will smoke, under powered, spark plugs will foul etc. Do you have any way to do a compression test on it? That will tell you a lot.
God is good, all the time!
Circle of Safety

garlicman
Posts: 11
Joined: Sun Jan 15, 2017 7:03 am
Zip Code: 13205

Re: smoking from rebuilt

Postby garlicman » Wed Jan 18, 2017 2:05 pm

no I don't but have friend that might what should it be at

User avatar
Shane Nelson
501 Club
501 Club
Posts: 1644
Joined: Wed Nov 22, 2017 6:24 am
Zip Code: 27284
Tractors Owned: .
1947 Cub #1447 (Arnold)
1949 Cub (Walt)
1949 John Deere A
1972 Schramm Pneumatractor
1993 Ford 4630
1965 John Deere 110
1961 Cub Cadet Original
Circle of Safety: Y
Location: Oak Ridge, N.C.

Re: smoking from rebuilt

Postby Shane Nelson » Wed Jan 18, 2017 2:08 pm

120-130 is normal, should be after a rebuild anyway.
God is good, all the time!
Circle of Safety

garlicman
Posts: 11
Joined: Sun Jan 15, 2017 7:03 am
Zip Code: 13205

Re: smoking from rebuilt

Postby garlicman » Wed Jan 18, 2017 2:11 pm

ok thanks I was told it was not seated yet

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 16239
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: smoking from rebuilt

Postby Eugene » Wed Jan 18, 2017 8:43 pm

garlicman wrote:I was told it only had new rings
I understand this sentence to mean that you are not the one who put this engine together. Correct?

20 hours on the engine, engine should be broke in. Did you cross hatch hone the cylinders?
I have an excuse. CRS.

User avatar
Stanton
Team Cub Mentor
Team Cub Mentor
Posts: 4268
Joined: Mon Jun 22, 2009 6:56 am
Zip Code: 64070
Tractors Owned: 1942 Farmall AV, serial #87025
1945 Farmall H, serial #213,651
1947 Farmall Circle Cub, serial #2116
1948 Farmall Cub, serial #46066
Circle of Safety: Y
Location: Lone Jack, MO

Re: smoking from rebuilt

Postby Stanton » Thu Jan 19, 2017 7:49 am

garlicman wrote:no I don't but have friend that might what should it be at


Handy to have around...

Image
https://www.napaonline.com/napa/en/p/BK_7768080/BK_7768080
Stanton
Image Circle of Safety

User avatar
Urbish
501 Club
501 Club
Posts: 1099
Joined: Sat Sep 07, 2013 3:45 pm
Zip Code: 48158
Tractors Owned: ~
1948 Farmall Cub
1947 Farmall H
1946 Farmall B
1953 Willys CJ3B
Circle of Safety: Y
Location: Manchester, MI

Re: smoking from rebuilt

Postby Urbish » Thu Jan 19, 2017 8:27 am



:Dito:
I have the cheapie from Harbor Freight. Works fine:
http://www.harborfreight.com/compression-test-kit-8-pc-62638.html

Matt Kirsch
10+ Years
10+ Years
Posts: 4453
Joined: Tue Jun 08, 2004 3:04 pm
Zip Code: 14559
Circle of Safety: Y
Location: Rochester, NY

Re: smoking from rebuilt

Postby Matt Kirsch » Thu Jan 19, 2017 9:58 am

Yeah, if it hasn't seated by now, it isn't going to.

I have heard legends of putting some sort of dry abrasive cleanser (Bon-Ami?) in the intake as a old-timer's trick for seating rings. Not sure I would have the guts to try it.

Who told you the cylinders didn't need to be bored? If it was an engine machine shop, that's one thing, but I would still have my doubts because it's rare to impossible for a cylinder to wear perfectly round. They are usually somewhat egg-shaped.

garlicman
Posts: 11
Joined: Sun Jan 15, 2017 7:03 am
Zip Code: 13205

Re: smoking from rebuilt

Postby garlicman » Fri Jan 20, 2017 12:34 pm

ok just tested and low all within 10 % (65, 66, 70 ,68)

User avatar
Shane Nelson
501 Club
501 Club
Posts: 1644
Joined: Wed Nov 22, 2017 6:24 am
Zip Code: 27284
Tractors Owned: .
1947 Cub #1447 (Arnold)
1949 Cub (Walt)
1949 John Deere A
1972 Schramm Pneumatractor
1993 Ford 4630
1965 John Deere 110
1961 Cub Cadet Original
Circle of Safety: Y
Location: Oak Ridge, N.C.

Re: smoking from rebuilt

Postby Shane Nelson » Fri Jan 20, 2017 12:45 pm

There's where your smoke is coming from, needs a bore. Crank it and take the oil fill tube out and see if it's blowing out there while running. That will indicate needs boring too if it has new rings in it.
God is good, all the time!
Circle of Safety


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 3 guests