This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link:
Privacy Policy

NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.

Original equipment??

The Cub Club -- Questions and answers to all of your Cub related issues.
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.
User avatar
Dusty B
10+ Years
10+ Years
Posts: 1880
Joined: Wed May 23, 2007 7:35 am
Zip Code: 61736
Tractors Owned: '45 SC Case
Circle of Safety: Y
Location: IL, Downs
Contact:

Original equipment??

Postby Dusty B » Wed Dec 18, 2013 3:15 pm

Getting ready to do a valve job on my loboy and of course ran into extra pieces. Is this a rotator valve setup? Did they install these in '59 cubs new?? PO' s son does not think this tractor has ever been overhauled and pistons appear to be standard. Should I just bite the bullet and replace all valve setup, springs & all?? 20 -20 hind sight should have just put new radiator and head on it and buttoned it back up!! (have 2 of these coming apart). But the hood is off!!!!! Dusty B
Attachments
unnamed-4.jpg
unnamed-4.jpg (33.32 KiB) Viewed 881 times
Grandpa's '41 B
'56,,'57,'59, Cu'b
'45 C
'55 Case S
Dad's DB garden tractor
'48 DeSoto
'31 "A Coup
'79 Lincoln TC
God looks out for those of us who don't know how to look out for ourselves!

SPONSOR AD

Sponsor



Sponsor
 

User avatar
Lurker Carl
Cub Pro
Cub Pro
Posts: 3970
Joined: Mon Feb 03, 2003 9:54 am
Zip Code: 16685
Circle of Safety: Y
Location: PA, Todd

Re: Original equipment??

Postby Lurker Carl » Wed Dec 18, 2013 4:24 pm

Valve rotators were an option. A good idea if mowing was the primary chore.
"Chance favors the prepared mind."
- Louis Pasteur

"In character, in manners, in style, in all things, the supreme excellence is simplicity."
- Henry Wadsworth Longfellow

Bob McCarty
Team Cub
Team Cub
Posts: 11827
Joined: Tue May 25, 2004 8:02 pm
Zip Code: 80501
Tractors Owned: Cubs, MH Pony, Shaw, Allis G, 1934 Silver King, JD LA and LI, Gibson D, David Bradley Tri-Trac
Circle of Safety: Y
Location: CO, Longmont

Re: Original equipment??

Postby Bob McCarty » Wed Dec 18, 2013 5:45 pm

Dusty, I have no experience with rotocaps, but looked at Messick's website. They are still available ($17 x 4).

Bob
"We don't need to think more,
we need to think differently."
-Albert Einstein

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 20344
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Original equipment??

Postby Eugene » Wed Dec 18, 2013 7:41 pm

I would replace or reuse the rotors. Helps keep down the burning of the exhaust valves.

Quick look at the parts manuals, the valve springs are the same with or without the rotors. If the parts are good, use. If not, replace.
I have an excuse. CRS.

User avatar
John *.?-!.* cub owner
Cub Pro
Cub Pro
Posts: 23701
Joined: Sun Feb 02, 2003 2:09 pm
Zip Code: 63664
Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
Location: Mo, Potosi

Re: Original equipment??

Postby John *.?-!.* cub owner » Wed Dec 18, 2013 8:12 pm

If you replace valves, the rotocaps use a different valve.
If you are not part of the solution,
you are part of the problem!!!

User avatar
Dusty B
10+ Years
10+ Years
Posts: 1880
Joined: Wed May 23, 2007 7:35 am
Zip Code: 61736
Tractors Owned: '45 SC Case
Circle of Safety: Y
Location: IL, Downs
Contact:

Re: Original equipment??

Postby Dusty B » Thu Dec 19, 2013 9:45 pm

Bob McCarty wrote:Dusty, I have no experience with rotocaps, but looked at Messick's website. They are still available ($17 x 4).

Bob - e-mailed Messicks, they say not available?! Plan "B" - does anyone on the forum have some in their junk box left over from a rebuild or valve job?? Plan "C" - Keep good rotor on exhaust valves, replace rotors on intake w/solid rotors??! Plan "D" - replace entire valve system when TM gets off vacation! Hate to go to that expense - valves are in good shape and have plenty of margin to be ground! Please check the "wanted" classifieds !!!!! Thanks - still open for suggestions! Dusty B
Bob
Grandpa's '41 B
'56,,'57,'59, Cu'b
'45 C
'55 Case S
Dad's DB garden tractor
'48 DeSoto
'31 "A Coup
'79 Lincoln TC
God looks out for those of us who don't know how to look out for ourselves!

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 20344
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Original equipment??

Postby Eugene » Fri Dec 20, 2013 8:48 am

Eugene wrote:Quick look at the parts manuals, the valve springs are the same with or without the rotors.
Correction. Valve springs used with rotor cap are different.

I ran into the problem of no rotor caps available when I rebuilt my Cub's engine several years ago. There are a bunch of Cubs without rotor caps. Depending on parts condition, the least expensive route would be to reuse the intake valve parts and replace the springs and caps on the exhaust valves.

Question Dusty. Do you have rotors on the intake valves as well as exhaust valves? If so you probably have 4 good rotors to put back on the exhaust valves.

Once you get everything apart, cleaned up, check the parts manuals to determine a repair plan.
I have an excuse. CRS.

User avatar
Dusty B
10+ Years
10+ Years
Posts: 1880
Joined: Wed May 23, 2007 7:35 am
Zip Code: 61736
Tractors Owned: '45 SC Case
Circle of Safety: Y
Location: IL, Downs
Contact:

Re: Original equipment??

Postby Dusty B » Fri Dec 20, 2013 1:15 pm

Eugene - looking at it from cost angle - what it I used springs and caps from Katrina (think they were solid) and just bought new intake valves? I agree the rotor caps would be more effective on the exhaust valves than on the intake - wouldn't that work? W/have to dig out the old block & parts from Katrina (think the margin on the valves were getting thin, reason for new valves). Thanks for the input. Dusty B
Grandpa's '41 B
'56,,'57,'59, Cu'b
'45 C
'55 Case S
Dad's DB garden tractor
'48 DeSoto
'31 "A Coup
'79 Lincoln TC
God looks out for those of us who don't know how to look out for ourselves!

User avatar
Dusty B
10+ Years
10+ Years
Posts: 1880
Joined: Wed May 23, 2007 7:35 am
Zip Code: 61736
Tractors Owned: '45 SC Case
Circle of Safety: Y
Location: IL, Downs
Contact:

Re: Original equipment??

Postby Dusty B » Fri Dec 20, 2013 1:34 pm

Sponsor to the rescue again!!! JP salvage parts have used rotor caps $2 ea. - still available from IH, new, $21.75 ! This problem solved for the time being anyway! LOL ! Dusty B
Grandpa's '41 B
'56,,'57,'59, Cu'b
'45 C
'55 Case S
Dad's DB garden tractor
'48 DeSoto
'31 "A Coup
'79 Lincoln TC
God looks out for those of us who don't know how to look out for ourselves!

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 20344
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Original equipment??

Postby Eugene » Fri Dec 20, 2013 9:03 pm

Dusty B wrote:the margin on the valves were getting thin, reason for new valves.
Last small engine needing the valves ground - - - found out that new valves were only slightly higher in price than the cost of having the valves ground.

Besides the cost factor, new valves were in the store the next day. Having the valves ground would take a week to 10 days.
I have an excuse. CRS.

User avatar
Dusty B
10+ Years
10+ Years
Posts: 1880
Joined: Wed May 23, 2007 7:35 am
Zip Code: 61736
Tractors Owned: '45 SC Case
Circle of Safety: Y
Location: IL, Downs
Contact:

Re: Original equipment??

Postby Dusty B » Sat Dec 21, 2013 10:06 am

W/probably just lap these in by hand - not in bad shape. Or have a friend in antique auto club w/old fashioned valve machine, does them reasonable (free last time) if I want to go that way! Ready to put it back together!! Work time seems to get shorter in the winter. LOL !! Thanks, Dusty B
Grandpa's '41 B
'56,,'57,'59, Cu'b
'45 C
'55 Case S
Dad's DB garden tractor
'48 DeSoto
'31 "A Coup
'79 Lincoln TC
God looks out for those of us who don't know how to look out for ourselves!


Return to “Farmall Cub”

Who is online

Users browsing this forum: muleboss and 38 guests