As promised here are the drawings and pictures of my adjustable camshaft pulley.
Not 100% finished, though. Only need to drill the holes for the +3°, +6°, +9° and -3°, -6°, -9° settings.
I decided to use the "holes" method instead of the button holes, because I don't have tha machinery for making perfect buttons and I also don't trust theyr tightening capability 100%.
As sayed in another thread I have a 1 coil per cylinder engine with the magnetic camgear pickup (ABY-AAN-ADU engines) stroked using a taller TDi block (~16mm taller).
So, having produced half a theet change in timing, I had to phase the camshafts and the pickup's disk back.
Not having available any source for finding an aftermarket adjustable pulley I had no other solution but building it by myself....
While there I also wanted to be able to chose among different timing advances for later tests.
Here is first drawing: section of OEM camshaft pulley
Not 100% finished, though. Only need to drill the holes for the +3°, +6°, +9° and -3°, -6°, -9° settings.
I decided to use the "holes" method instead of the button holes, because I don't have tha machinery for making perfect buttons and I also don't trust theyr tightening capability 100%.
As sayed in another thread I have a 1 coil per cylinder engine with the magnetic camgear pickup (ABY-AAN-ADU engines) stroked using a taller TDi block (~16mm taller).
So, having produced half a theet change in timing, I had to phase the camshafts and the pickup's disk back.
Not having available any source for finding an aftermarket adjustable pulley I had no other solution but building it by myself....
While there I also wanted to be able to chose among different timing advances for later tests.
Here is first drawing: section of OEM camshaft pulley
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