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Post by firstplace on May 15, 2015 18:26:36 GMT -5
after rebuild at tdc and the cam with the mark at tdc, the chain barely lands on the cam gear. As long as everything is tdc and I can get the chain back together, is that OK ??
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Post by grizld1 on May 17, 2015 20:00:42 GMT -5
Maybe, maybe not; eyeballing the camshaft position can be tricky. For a simple check, use a piece of small wood dowel or kebab skewer to jam fit a line (kite string, fishing line, etc.) in the hole at the left end of the crankshaft. Set the motor to TDC, tension the cam chain slightly, and pull the line up across the center of the camshaft bearing and sight on the timing notch in the camshaft sprocket. If the notch is parallel to the line, your installation is correct. If the notch is cocked, slack off the cam chain adjuster all the way, slip the bearings off the camshaft and let it drop down, move the cam chain 1 tooth in the required direction, and reinspect.
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Post by firstplace on May 17, 2015 20:31:22 GMT -5
I see what you mean, but I guess the real question is, after I took the chain apart at the top of the sprocket and now that I am reconnecting it, the new master link isn't even close to the top. Is it possible the chain got slack and moved on the lower sprocket? Does it matter if I'm tcd on the cam and tdc on the stator?
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Post by grizld1 on May 19, 2015 19:17:38 GMT -5
I think your guess is probably right, and the chain moved on the crank sprocket. All that matters is getting the valves to open at the right time. If you follow the procedure I gave you, you'll be fine.
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Post by firstplace on May 19, 2015 22:03:37 GMT -5
great, thanks
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Post by madmax on May 21, 2015 10:23:25 GMT -5
When I timed mine up with a new camchain the camshaft marks were approx 1/2 a tooth out until I installed the tensioner, once that was fitted and set up properly it pulled the timing marks in perfectly.
Max
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Post by grizld1 on May 23, 2015 19:05:39 GMT -5
Thank you, Max; that's why I recommend inspecting with the tensioner installed. It's much easier to inspect that way than by rolling the camshaft back by hand to take the slack out of the front run of the chain.
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