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2cam engine rebuild

Assembling cases

1

Knuckle pistons

2

 

Relief cam plate and Gear stud plate

3

Timing

4

Ready to mount on frame

5

1929Harley JDH camshaft axes

The axes are resoldered. Must grind a bit and that’s OK

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Ouch : some trouble… Why? :-x

Here are the problems:
The pistons were tight.
The camshaft carrier move.
The tappets have a mark more than 1 millimeter

How it happened ? Some assumptions :


I think it should not put the last segment on the pistons when the housing baffles on crankcase are in good state.

For the axes of camshaft. I think the exhaust valves are too long. Once when the spring is fully compressed background downforce refers to the axes.

If someone have an idea?

 

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Harley JDH : Replacement of cylinders

The engine is on the bench.
I want to replace the cylinders which are 1927-1928 models by 1929 model.

But… It’s no so simple… 😡

 

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Carb on the wrong side…