Tool for removing valve springs.

Working on some valve train geometry improvements and wanted to remove the valve springs with the cylinder head on the engine and the engine in the car.
Found several pre made options, lever operated, so I have to hold a lever and finagle keepers? Or more positive devices but more than I wanted to spend.
So I made this, used two slant six rocker arms, a carriage bolt some misc scrap steel and a couple of nuts and my welder.
It works really well. This may become my go to valve spring removal tool.
The two bolts in the steel plate are positioned in the inside of the valve cover rail to hold the plate while the rounded head of the carriage bolt changes angle as the valve spring is compressed. Have and extra hole to accommodate the profile changes in the rail of the cylinder head.
Use a ratchet on the nut, makes it easy to have the spring compressed while positioning the keepers.

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