Topic: Valve adjustment for newly built motor

[Sweep]

I'm not sure what I could have done wrong, in fact I don't think I could have done anything wrong here.  I have an APE worked cylinder head with new valves springs, wiseco 836 pistons, and a Web 41a cam with .360 lift, 280 duration, and 260 duration at .050.

I can't even get the cam into a position to enable the stock clearances of .002 intake and .003 exhaust regardless of 1&2 TDC.  I can get it to a position to where the valves are not opening but I just can't get it to where I can get a feeler gauge in there at all.

Is this normal and/or what could be wrong?

Thanks.

[Sweep]

I think I blundered the cam timing and though I lined up the scribe and index lines on the cam 1&4 must not have been TDC.  That's what I get for not looking into the plug holes!

[MRieck]

Are you using an adjustable cam sprocket?

[Sweep]

Are you using an adjustable cam sprocket?

Yes I am.  I was just being stupid or overly cautious and forgot the thousands of times I've adjusted valves on bikes.  I read the manual and took it that I needed to get the motor spun to 1-4 TDC (T mark) AND get the cam notch at 12 o clock when really all I needed to do was get both of number 1's valves to their most flat points, which of course put the notch at 6 o clock and confused me. 

I re-timed the cam but it was right in the first place.

When I get this finished I'm immediately getting another cb750 donor so I can do this again, I'd hate to lose or waste the knowledge gained.

Thanks,
Sweep

[MRieck]

Are you using an adjustable cam sprocket?

Yes I am.  I was just being stupid or overly cautious and forgot the thousands of times I've adjusted valves on bikes.  I read the manual and took it that I needed to get the motor spun to 1-4 TDC (T mark) AND get the cam notch at 12 o clock when really all I needed to do was get both of number 1's valves to their most flat points, which of course put the notch at 6 o clock and confused me. 

I re-timed the cam but it was right in the first place.

When I get this finished I'm immediately getting another cb750 donor so I can do this again, I'd hate to lose or waste the knowledge gained.

Thanks,
Sweep

Good job figuring it out.

[aptech77]

You should not be using the "stock" clearances anymore. Web Cam's should have gave you new specs. to adjust the valves to. Mine was .004/.004

[MRieck]

You should not be using the "stock" clearances anymore. Web Cam's should have gave you new specs. to adjust the valves to. Mine was .004/.004

That's right...I overlooked that.

[Sweep]

You should not be using the "stock" clearances anymore. Web Cam's should have gave you new specs. to adjust the valves to. Mine was .004/.004

I did find that yesterday via searching this site and used those specs.  Thanks.