Clinician
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Post by hitshane on Jul 10, 2014 16:48:22 GMT -6
So I put everything back together, again. I drained the gas tank and put in fresh fuel, again... Ran starter for 2 sets of 5 seconds each, then let it sit for a few minutes. Hit the starter again and BAM; it started right up and revved up with the throttle. Let it warm up and took it around the block. I just need to adjust the mix on the carb tomorrow with better weather. It seams to be lower on power and sounds quieter. Maybe I should increase the valve clearance some from the .003" it is at now? They were at .005"...
Thank you guys for all the help. I must have got bad gas last week. I'll remove that station from all scheduled stops. On the plus side, I now know how to adjust the valves and completely clean out the carb. I haven't done either of those things since my small engine class in high school, 20 years ago...
-Shane
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Clinician
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Post by hitshane on Jul 12, 2014 7:54:15 GMT -6
Adjust your valves both to .003 inchs Alleyoop This made a big difference on acceleration. The power curve is much smoother now. I just threw on a set of Pirelli's on top of it and this thing handles better than it ever did!
Thank You,
-Shane
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Post by Alleyoop on Jul 12, 2014 12:05:23 GMT -6
NICE GOING, Good job, concerning adjusting the valves, just keep in mind what the valves are doing.
As the cam rotates and the rockers hit the LOBES on the CAME it pushs the VALVES DOWN(OPENS THEM) so that on the INTAKE SIDE it sucks in AIR AND FUEL on the EXHAUST SIDE it allows the burned up fuel to escape out the muffler. So keeping that in mind TO MUCH OF A GAP will limit the AMOUNT the VALVES OPEN and there fore less air and fuel are let in as well as less exhaust it let out. So you do not want to big of a gap and on the other hand not to little either otherwise with the heat things expand and they will not SEAL and the motor will loose compression .
Some gap them wide JUST BECAUSE they want the settings to last a longer period of time between adjusting them again, but they are loosing a little bit of performance. Which is ok if you are not running into performance just riding around and cruising.
Alleyoop
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Clinician
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Post by hitshane on Jul 14, 2014 12:19:37 GMT -6
I will keep that in mind! I did notice that your posts (and others) went from promoting a .004" gap to .003" in the last year. What made you do this and should the exhaust be looser than the intake? I just got a replacement valve cover and breather tub Pair gasket, so I will recheck the clearances while I'm in there. It has performed great though, so I will leave them where they are at, and check again in the future!!!
-Shane
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Post by Alleyoop on Jul 14, 2014 12:36:07 GMT -6
Well for the 50cc's I recommend .003 inchs on both valves, for 150cc's I recommend .004 inchs on both for 250s+ I recommend .004 inchs on the intake and .006 inchs on the Exhaust.
If those settings create a CLATTERING SOUND that means they are to loose then you can go .001 tighter. Now you might hear a TICKY TICKY which is good that means they are not to loose and not to tight.
Alleyoop
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Clinician
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Post by hitshane on Jul 14, 2014 12:47:10 GMT -6
When coming down from wot, just as or before the clutch is disengaging, I hear a slight ticky ticky from the engine not the CVT. The engine in general sounds more fluid with the new valve adjustments. The torque curve has a smoother curve instead of the mid range power band blast it use to have, but I think it is more responsive this way, and probably less stressful on the engine 
-Shane |
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..BAD TO THE BONE..
