Wez_
CB750 Addict
Hello guys. So the plan is to assemble my top end to see if I have a zero clearance. So what was explained to me is that since I had the valves ground, the valve clearances will be that much tighter, to the point where I might have zero lash. If this is the case, then I am hoping to do a custom shim job once I can get the camshafts installed and measure the new clearances. If I can get 2-5K miles from the work done thus far, well at least I learned how to recondition a head properly (no valve grinding, just light lap and read pattern)
With that being said I have followed the Clymer manual on reassembling the head and installing the camshafts and I am the step where it's time to start bolting down the exhaust cam bearing caps. I don't want to continue until I can confirm a few things.
1.) I cannot fully install the long exhaust cam chain onto the exhaust sprocket at this point. It will not fully engage on the gear teeth (its about 3/4 on).
I pulled up on the chain as much as possible (the tensioner lock nuts were lose and the outer piece of the tensioner came all the way up when I pulled up on the chain. Then I tightened the lower lock nut. Still not enough slack.
2.) The lobes of the number one cylinder are pointed towards the spark plugs, but seem to be engaging the shims and valve train. It also appears If I install the bearing cap A, the lobes of the #1 cylinder will engage the valve springs and open the valves.
The #1 & 4 pistons are at TDC where I left it, also the timing mark is at 1.4T as close as possible.
The cam just appears to be perfectly seated in its bearing groves on the right side, but the lobes are engaged on the left side at #1 cylinder.
3.) It appears if I tighten down the bearing caps, I would have enough slack in the chain to clear the sprocket teeth and full install the chain. Next steps are to tighten the sprocket mounting bolts and rotate the assembly counter clockwise a few times to install the other sprocket bolts.
I hope I am doing this correctly. Please advise.
With that being said I have followed the Clymer manual on reassembling the head and installing the camshafts and I am the step where it's time to start bolting down the exhaust cam bearing caps. I don't want to continue until I can confirm a few things.
1.) I cannot fully install the long exhaust cam chain onto the exhaust sprocket at this point. It will not fully engage on the gear teeth (its about 3/4 on).
I pulled up on the chain as much as possible (the tensioner lock nuts were lose and the outer piece of the tensioner came all the way up when I pulled up on the chain. Then I tightened the lower lock nut. Still not enough slack.
2.) The lobes of the number one cylinder are pointed towards the spark plugs, but seem to be engaging the shims and valve train. It also appears If I install the bearing cap A, the lobes of the #1 cylinder will engage the valve springs and open the valves.
The #1 & 4 pistons are at TDC where I left it, also the timing mark is at 1.4T as close as possible.
The cam just appears to be perfectly seated in its bearing groves on the right side, but the lobes are engaged on the left side at #1 cylinder.
3.) It appears if I tighten down the bearing caps, I would have enough slack in the chain to clear the sprocket teeth and full install the chain. Next steps are to tighten the sprocket mounting bolts and rotate the assembly counter clockwise a few times to install the other sprocket bolts.
I hope I am doing this correctly. Please advise.