OK, a productive morning in between domestic chores.
Set up a DTI on left side inlet valve (closed). Rotated the crankshaft anticlockwise until DTI just moved. Caught it at 0.002" valve lift. The manual says the left side fully advanced timing mark is at 38 degrees btdc. The manual says the inlet valve starts to lift at 36 degrees btdc. What did I see on the timing marks?
I estimate that give or take a bit, 1 degree of crankshaft rotation is around 2mm on the timing marks of the stator. The inlet valve at 0.002" lift is showing around 36.5 to 37 degrees btdc. The manual says one tooth of mistiming results in 26 or 46 degrees opening.
Result? As near as possible to check with rudimentary tools. The camshaft timing is correct.
That leaves me wondering why I ran out of retarding adjustment at the points plate. But unless I take the motor out and disassemble to check every setting, I'm not going to answer that question. Pictures below -
Set up a DTI on left side inlet valve (closed). Rotated the crankshaft anticlockwise until DTI just moved. Caught it at 0.002" valve lift. The manual says the left side fully advanced timing mark is at 38 degrees btdc. The manual says the inlet valve starts to lift at 36 degrees btdc. What did I see on the timing marks?
I estimate that give or take a bit, 1 degree of crankshaft rotation is around 2mm on the timing marks of the stator. The inlet valve at 0.002" lift is showing around 36.5 to 37 degrees btdc. The manual says one tooth of mistiming results in 26 or 46 degrees opening.
Result? As near as possible to check with rudimentary tools. The camshaft timing is correct.
That leaves me wondering why I ran out of retarding adjustment at the points plate. But unless I take the motor out and disassemble to check every setting, I'm not going to answer that question. Pictures below -
