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Cam Timing - Problem?
#1

First, what I know about my engine. The <acronym title='previous owner'>PO</acronym> had the head rebuilt. Also, I can see scribe marks where the cam crank was removed and reinstalled.



I set out to do the belts and front engine seals. I rotated the engine to bring the cam crank up to the timing mark. I then installed a flywheel lock. I checked the position of the flywheel in the little hole that is in the flywheel cover plate. There are three marks on the flywheel with the center being <acronym title='top dead center'>TDC</acronym>. When I look through the hole the right most mark is close to the center with the center mark past the left of the hole.



The car runs fine and I know the <acronym title='previous owner'>PO</acronym> was very meticulous. Should I be concerned about this or just put the belts back on in the same position they were in?
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#2

No problem , just a slight belt strech would do that , even with a new belt installed most of the time it is not exactly on the mark .

But the way to go is to put crankshaft in top dead center , then install flywheellock and take belts off , then adjust the camshafts slightly if needed to put them on the mark and install the new belt .
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#3

When you put flywheel lock in, flywheel marks are never correct. They are usually between center and outer marks
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#4

Thanks guys, it makes sense now. The diameter of the flywheel is so much larger than the crank gear. It takes a very large movement of the flywheel to see one tooth movement on the crank gear. I repositioned the flywheel so the center mark was in the hole and it hardly moved the crank gear. It all lines up okay. It really is a geometry problem.



I'm just so used to cars that have timing marks on the crank gear where they are dead on or you have a problem. Now I know!!
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#5

Started my reassembly and found that my new spacer sleeve for the upper balance shaft won't slide on the shaft. I cleaned up the shaft and it somewhat slides on backwards but won't slide on in the right direction. Such a simple thing but yet NOT.
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