Mech Addict
Supporting Member
- 1,299
- 695
- Jun 9, 2019
-
Jackson,
Wyoming
OK, I know there is a lot of information on timing belt tech. I thought I was following it, but now realize I am trying to reassemble my belt, but with the bottom end all aligned, my cams appear 180 degrees out. I failed to notice that the cam gear buttons were pointing at 6 oclock, instead of 12 o'clock when I disassembled it. Seems like I should have rotated the crank another 3 revs prior to taking it all apart. Fortunately I've now realized it, as I'm more carefully starting the assemble process. Unfortunately, my time machine is not working, and I can't go back and do it right the first time.
So, I have the crank and oil pump sprocket indicators aligned with their pointers. Balance belt reinstalled on and tensioned with the balance gear arrow aligned to the notch. My cam gears are set with the two marks aligned right in line with the head, but the gear buttons pointing down. Since this is an interference engine, how do I rotate the cams 180 degrees?? Seems like it will get stuck when the valves encounter the pistons.
Then the more I thought about it, I can't understand how much difference it would make. The signal for the engine computer for fuel and start comes off the cam, not the lower assembly. The only thing that has me nervous is that it seems there is some 3 degree offset in the cam gear button position when the cam gear marks are aligned, and if it is 180 degrees off, then the 3 degrees is going the wrong way.
Any suggestions on how to get it aligned properly (I mean actual physical steps) from this point. Also curious as to why it matters, given the cam position sensor design.
So, I have the crank and oil pump sprocket indicators aligned with their pointers. Balance belt reinstalled on and tensioned with the balance gear arrow aligned to the notch. My cam gears are set with the two marks aligned right in line with the head, but the gear buttons pointing down. Since this is an interference engine, how do I rotate the cams 180 degrees?? Seems like it will get stuck when the valves encounter the pistons.
Then the more I thought about it, I can't understand how much difference it would make. The signal for the engine computer for fuel and start comes off the cam, not the lower assembly. The only thing that has me nervous is that it seems there is some 3 degree offset in the cam gear button position when the cam gear marks are aligned, and if it is 180 degrees off, then the 3 degrees is going the wrong way.
Any suggestions on how to get it aligned properly (I mean actual physical steps) from this point. Also curious as to why it matters, given the cam position sensor design.