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Timing Problems

Posted January 2, 201015 yr

I think I have a problem. I reinstalled my head with the #1 valves closed and the crank dowel at 12 o'clock. I set the crank to TCD with the crank key at 12 o'clock. I installed the crank sprocket with the dowel in the no. 1 location hole. This set the no. 1 timing mark at about 2:30. I installed the chain with the bright link on the no. 1 timing mark on the crank sproket which positioned the second bright link at about 4 o'clock on the cam dowel. So far, so good.

At that point, the right side of the chain was slack and the opposite side, with the chain tensioner was tight. With the chain still installed, I rotated the crank sightly which tightned the chain on the right and slacked it on the left. No problem, I thought.

Tonight when I came back to tighten the cam bolt to 100 ft/lbs, the cam shaft rotated sightly, enough to put the slack back on the right side.

Also, I noticed the the location notch on the cam sproket is no longer aligned with the groove on the cam tower. The sprocket notch is to the right (clockwise) of the groove. Pictures attached. I don't know for sure, but this does not seem correct? Any ideas? Thanks.

Upon further review it appears that the second bright link is not aligned witht the timing mark on the crank.

Edited January 2, 201015 yr by CaseyByrd72
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January 6, 201015 yr

comment_305317

OK, assuming you got it right initially, one other oddity you don't hear mentioned much is that the marks on the sprockets and bright links will only match up UNTIL you turn them. They will not line up again until you turn the crank something like 12 times (can't remember the exact number). Also, not sure if your slack side chain guide is installed properly- it doesn't look like its touching the chain. If that is true, then you won't be able to set is correctly- when the tensioner and the guide are installed right, there is not much slack in the chain, probably no a whole "tooth" worth like you seem to have. Search a bit, someone has posted some nice pics of the correct setup.

Eric