Installing valve keeps

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inairam
501 Club
501 Club
Posts: 822
Joined: Wed Jul 08, 2015 10:24 am
Zip Code: 19342
Tractors Owned: 1948 with international 1000 loader
1949 with kub klipper belly mower.
1957 with c-2 mower & c-54 grader blade
1965 lo-boy with c-3 mower
1975 with homemade mower
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: Installing valve keeps

Postby inairam » Sun Aug 07, 2016 7:20 pm

I got the head back on. Set up the pony gas tank. Had a leak on the water outlet elbow, which set me back. Got the leak addressed and got it to start :{_}: I let is run for about 20 minutes and drove it a little and did not see any leaks from the head gasket. I did a standing start in 3rd gear with some struggle (surging), which I could not do this season. Oil pressure was at 80-90% of the gauage.

There is some surging above 50-60% throttle which I want to address before I do a compression check.

I had the old valves soaking in some parts cleaner for a week or two and took some time to clean them and look at them. There was heat discoloration on 3 halves, one on the top at seat and 2 on the stem. I lost order so I so not know what cylinder any belong to. I also saw that lapping line was very inconsistent if visible at all on all of the valves.

Once i get the surging addressed and retorque the head bolts I will take some compression reading,

Thank everyone for your help.
Attachments
head.png
Head with 0.015 shave to flatten
Last edited by inairam on Sun Aug 07, 2016 8:54 pm, edited 1 time in total.
When you only have 9 horsepower you need to know the names of all of the ponies!

Bob McCarty
Team Cub
Team Cub
Posts: 8718
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: Installing valve keeps

Postby Bob McCarty » Sun Aug 07, 2016 8:28 pm

inairam wrote: I also saw that lapping line was very inconsistent if visible at all on all of the valves.


If the valves were new and you recut the seats, you should have a consistent contact line after lapping. I'm not sure if you meant before or after lapping.

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

inairam
501 Club
501 Club
Posts: 822
Joined: Wed Jul 08, 2015 10:24 am
Zip Code: 19342
Tractors Owned: 1948 with international 1000 loader
1949 with kub klipper belly mower.
1957 with c-2 mower & c-54 grader blade
1965 lo-boy with c-3 mower
1975 with homemade mower
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: Installing valve keeps

Postby inairam » Sun Aug 07, 2016 8:53 pm

Bob I was referring to the old valves.
When you only have 9 horsepower you need to know the names of all of the ponies!

inairam
501 Club
501 Club
Posts: 822
Joined: Wed Jul 08, 2015 10:24 am
Zip Code: 19342
Tractors Owned: 1948 with international 1000 loader
1949 with kub klipper belly mower.
1957 with c-2 mower & c-54 grader blade
1965 lo-boy with c-3 mower
1975 with homemade mower
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: Installing valve keeps

Postby inairam » Sun Aug 28, 2016 3:14 pm

Final Report. I replaced the carb and the surging and over rich both went away. I have not gotten into the carb yet.

I was speaking with my mechanic about the valve job and he suggest while the head was off to poured Seafoam into the cylinders. He says he does this with Saturns which are known for burning oil to loosen the rings. This Cub also had a bit of a blue smoke, but not now!. I just rotated the engine, so all 4 pistons were down and poured some in and left it there,

Compression Check today 100-110 in all 4 cylinders and the Club is running great.

Thank you to everyone for all of the help on my first valve job.
When you only have 9 horsepower you need to know the names of all of the ponies!


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