Maybe recheck your camshaft timing. It could be off a tooth. If thats fine it might be worth your trouble to check the key in the flywheel/rotor. Take a spark plug reading after a longish WOT run... still may need to be a bit richer through the mid and top. No ignition mods were done, correct?
Posts by retro
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If the clutch is slipping you'd probably feel (and hear RPMs come up) that, especially in 3rd gear and higher... With 11:1 piston and aftermarket camshaft made to optimize volumetric efficiency and cylinder pressures across a broad RPM range, I'd guess that your motor could idle just fine while being a tooth off. If it were mine thats the first thing I'd recheck.
I just looked at your photos of the timing marks on the sprocket and the flywheel and found your problem.
The camshaft is installed using the wrong mark on the flywheel... you are using the two maximum spark advance marks on the flywheel, when you should be using the Top-Dead-Center (TDC) mark.
There should be a single timing mark on the flywheel labeled "T".
Line up that "T" mark with the mark on the side cover (thru the window where you removed the plug), then install the cam sprocket on the cam so that the sprocket mark is even with the top of the head and snug up the sprocket bolts. Make sure that both cam lobes are facing DOWN when you do this.
Then go back and recheck all of your timing marks for proper alignment (they should match closely). Once you are sure you got it right, tighten up the sprocket bolts, install the chain tensioner and the rocker cover (a thin coating of hondabond or yamabond 4 on the alcohol wiped surfaces) and break it in easy for a bit...
The camshaft is installed using the wrong mark on the flywheel... you are using the two maximum spark advance marks on the flywheel, when you should be using the Top-Dead-Center (TDC) mark.
There should be a single timing mark on the flywheel labeled "T".
Line up that "T" mark with the mark on the side cover (thru the window where you removed the plug), then install the cam sprocket on the cam so that the sprocket mark is even with the top of the head and snug up the sprocket bolts. Make sure that both cam lobes are facing DOWN when you do this.
Then go back and recheck all of your timing marks for proper alignment (they should match closely). Once you are sure you got it right, tighten up the sprocket bolts, install the chain tensioner and the rocker cover (a thin coating of hondabond or yamabond 4 on the alcohol wiped surfaces) and break it in easy for a bit...
Use the service manual for this... go through the manual and you'll find photos of the TDC mark on the flywheel. It will be a single line. The way you have it timed in your photo is wrong... you used the ignition advance lines.
Try this... put a socket on the flywheel thru the center plug in the cover and rotate the motor in the normal direction. As you are rotating the motor slowly, watch as the timing marks appear (then disappear) in the window. The first mark(s) you'll see appear are the maximum ignition timing advance marks. continue rotating slowly and the next line(s) to appear are the "F" (Fire) initial ignition timing mark. Continue slowly and the final mark to appear will be the TDC mark. Use that mark... and use the service manual photos to show you the proper procedure. You can screw up by lining up the marks on the camshaft improperly too, and may have...
Read the camshaft installation procedure carefully in the manual. One missed or misunderstood word can lead you to screw it up.
Have fun,
This is the photo that you posted showing the incorrect ignition advance timing marks you used:
That is NOT a "T" !!!!
Start over... read the manual and follow directions. You'll get it right eventually... Come back and let us know how it goes...
@Carolynskiii,
You are right! I just downloaded the manual and that mark is the correct one. Thanks!
@SickNasty,
Next thing to troubleshoot is whether the decompressor is put together right, and that it is fully releasing when the motor starts. Note the order of the parts and verify the one-way clutch is good, etc:
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You are right! I just downloaded the manual and that mark is the correct one. Thanks!
@SickNasty,
Next thing to troubleshoot is whether the decompressor is put together right, and that it is fully releasing when the motor starts. Note the order of the parts and verify the one-way clutch is good, etc:
Attachments
A reminder... gotta go back and revisit your jetting again. That band-aid gotta come off now... Start at the bottom and then midrange then when its broken in a bit, do a longish WOT run (only if you have a safe place to do that, don't run over anyone or crash yourself!) and cut it. Yank the plug and see what ya got...
New cam ain't ever gonna work on an old valve adjustment. 
'Nuther 'minder... recheck the valve lash frequently as the cam breaks in and settles. You WILL have to take up some slack at some point.
EDIT:
Save your original clutch, probably just as good as the one you put in it... or better.
'Nuther 'minder... recheck the valve lash frequently as the cam breaks in and settles. You WILL have to take up some slack at some point.
EDIT:
Save your original clutch, probably just as good as the one you put in it... or better.
Ya, check the valve lash often. Its gonna wear fast... you apparently used old rockers on a new cam, which potentially can open a new and bigger can of worms. Keep a controlled lid on it by keeping your eyeballs on it.
Thank you very, very much!!! That goes for both of you! Many people post about their problem here then leave... without ever coming back and telling us whether the problem was found and fixed or not. So, we are usually left wondering if the person was helped or not... Since many of us are here to help others through sharing, we may tend to feel a bit putoff.... and we miss opportunities to learn from others and improve... and opportunities to correct our mistakes if we made any....
So again, THANKS for sharing!
Thank you very, very much!!! That goes for both of you! Many people post about their problem here then leave... without ever coming back and telling us whether the problem was found and fixed or not. So, we are usually left wondering if the person was helped or not... Since many of us are here to help others through sharing, we may tend to feel a bit putoff.... and we miss opportunities to learn from others and improve... and opportunities to correct our mistakes if we made any....
So again, THANKS for sharing!
Thanks SlammedRanger, this was a thought provoking thread! Fun stuff...
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