Quote:
Originally Posted by LoneWolfGal
I couldn't stop fiddling with the cams while waiting for the replacement compression tool to arrive, and I was struck by a Grant Hargraveish idea...
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LOL
Not original though, I think this is suggested in the Pelican instructions.
Quote:
Originally Posted by LoneWolfGal
Only one hitch, and I'm not sure it's a problem. I carefully kept the lighter-color chain links mated to the divots in the sprockets so that the cams would be in time with each other. I wanted to keep them both at 12 o'clock (while they were on the table). However, during the manipulation necessary to get the chain in place over the pads the cams rotated a teeny bit, to 1 o'clock, enough so the intake cam's link and divot are slightly apart, even though they're still lined up (see photo 2). I should have checked that before I snipped the pull-tie, because the cams can't be rotated without compressing the pads again. My question is, is it necessary to correct the problem so that both cams' links and divots are at 12 o'clock before they're installed in the head? Or can the cams be rotated slightly by hand after they're installed, with the cam tool inserted into the ends of the cams, the cam retainer loosely bolted in place, and before the double chain's sprocket is bolted to the exhaust cam?
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I don't have a spare engine at the moment (just sold it) so I am trying to visualise this. My understanding is the following...
WIth the crank at TDC for the cylinder bank in question and the slot in the end of the exhaust cam parallel with the valve cover mating surface (and/or - the cam tool installed in the ends of the cams) that cam is properly positioned. Positioning the second cam is a product of the number of chain links between the divots as you call them. You can simply count the links... or use the coloured links... or both. If I remember correctly with the compression bolt in place you can even reposition the cam sprockets vis-a-vis one another. You can move the cams once they are installed in the head before installing the cam tool and attaching the sprocket for the timing chain. With the cam tool installed in the ends of the cams nothing will move, but the divot for the exhaust cam is by definition in the right place. With the divots properly placed the slot in the end of the intake cam should be properly aligned also.
Hope this is clearer for the reader than it is for the writer.