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SC Valve Clearence

Farmall C, Super C Tractors, 200 & 230 1948-1958
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VinceD
10+ Years
10+ Years
Posts: 4587
Joined: Mon Apr 17, 2006 9:17 pm
Zip Code: 65626
Tractors Owned: 1949 Cub "Frodo"
1949 Cub "Sam" (future Project)
1965 Lo-Boy "Pippin"
1940 H "Walter"
1953 SC "Gimli"
Cub Cadet HDS 2155
Circle of Safety: Y
Location: MO, Bakersfield, (South - Central)

SC Valve Clearence

Postby VinceD » Sun Sep 25, 2011 2:01 pm

I'm confused. :lost:

The owner's manual shows a .014 valve clearence for all valves - both intake and exhaust.

Another manual I have shows that after serial number 100501 the clearence changes on the exhaust valves to .020. I assume this is the engine serial number and not the tractor serial number as the manual is engine related and not tractor specific. I have looked all over and can't find anything that looks like an engine serial number.

Do I just go with the .014? :help:
Vince
High atop Hummingbird Hill
In the Missouri Ozarks
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Jim Becker
Team Cub
Team Cub
Posts: 17241
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: SC Valve Clearence

Postby Jim Becker » Sun Sep 25, 2011 5:45 pm

My reference shows .014 hot for all of them. The ignition points should be .020. What reference shows .020 for the exhaust valves? I'd use .014. The engine number is stamped into a machined boss on the top edge of the block, below the #1 spark plug.

VinceD
10+ Years
10+ Years
Posts: 4587
Joined: Mon Apr 17, 2006 9:17 pm
Zip Code: 65626
Tractors Owned: 1949 Cub "Frodo"
1949 Cub "Sam" (future Project)
1965 Lo-Boy "Pippin"
1940 H "Walter"
1953 SC "Gimli"
Cub Cadet HDS 2155
Circle of Safety: Y
Location: MO, Bakersfield, (South - Central)

Re: SC Valve Clarence

Postby VinceD » Sun Sep 25, 2011 6:16 pm

Thanks Jim.

I was looking at page 1-18 of the
Engine & Fuel System
C-123, C-135, c-146 & C-153 Engines
GSS-1295-J W/revision 2
March, 1977

Jim, I think I know What I was doing wrong. I am embarrassed to say I was looking at the column for the C-135 engine and not the C-123 engine. :oops: :oops:

Tomorrow I will set all the valves for .014 and see what happens.
Vince
High atop Hummingbird Hill
In the Missouri Ozarks
Image

Jim Becker
Team Cub
Team Cub
Posts: 17241
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: SC Valve Clearence

Postby Jim Becker » Sun Sep 25, 2011 6:52 pm

Yeah, the C-135 over some 34,xxx serial number had a .020 exhaust clearance.


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