| Here is the mixer. Not much to it. The hole is where the fuel enters.
The needle valve screws in from the opposite side to control flow.
The needle valve should have a nice taper on the end. If not, sandpaper or a file should do the trick. No work needed on this one. The choke plate is held on with a cotter pin. No rocket science here. Clean it, check for cracks, check the needle, paint it, and you're done. |
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Remove the rocker arm pin from the head. It looks to me like the
pin should have been held by the set screw. Not original, and yours may
be different.
Note the repair on the rocker arm. It is in good shape other than that. I may use it if a replacement can't be found. The pin has a lot of wear, and will be replaced. |
| Time to remove the valves. The intake valve is on the right. Note
the double nuts on it. The exhaust valve has been modified at some point.
Break the double nuts apart with two wrenches on the intake. Unscrew the nuts from the valve and remove it. Exhaust was similar. Notice the lubrication holes in the head. |
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| Here are the valves removed from the head. The intake is on the
left. It can be used again with machine work. The larger nut is machined
to serve as a spring seat. The smaller nut is used to lock the tension
adjustment provided by the larger nut.
The exhaust valve is history. It is broken and had some creative repair done. Another part for me to find. More below. |
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This is a photo of the valves on my other Sattley. Notice the spring retainer, nut, and cotter pin on the exhaust valve. I think this is the correct arrangement. The valve spring is also much heavier, as it should be. |
| Here is the head ready for the machine shop. Valve guides are shot,
and the seats need to be ground.
My advice here is to talk to a local club member or someone at a local show to find a machine shop in your area. Not all automotive machine shops will care about your antique head. Loose valve guides will cause running problems. Poor seating valves will also. If you are not a competent machinist or are not sure, find someone who can do this work. My choice here will be thin wall bronze guides installed by the machine shop. Any comments from others are quite welcome, and I will add them here. That's it for the head until we install it.
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