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carb gunk
by: pmatulew - Aug 6, 2013 17:14:21 GMT -5
Post by pmatulew on Aug 6, 2013 17:14:21 GMT -5
Eeww.
When you're cleaning make sure to blow out the jets. (The 2 brass stick up things in the middle.) Also slide out the silver hinge pin for the float, remove the float and blow out the float valve.
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Post by pmatulew on Aug 6, 2013 17:08:33 GMT -5
Getting the keepers out is easy. Just lean down on it, and then release, and they pop right out. Getting them back in is more tricky.
Word of advice: Clean up your work area ahead of time because when those keepers go flying because they didn't seat right, you're going to have a hard enough time trying to find them.
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Post by pmatulew on Aug 6, 2013 11:29:44 GMT -5
Very cool!  Is that paint or vinyl tape? The taillight assembly is awesome. Very Retro. |
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Post by pmatulew on Aug 6, 2013 5:15:31 GMT -5
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Post by pmatulew on Aug 5, 2013 17:40:53 GMT -5
 Green with envy. Never underestimate those old guys...  (not there yet, but close enough to see it on the horizon) Was in my friends garage yesterday balancing the carbs on his ZX-11. Snarling beast that it is with the lid off. The sound alone is enough to warm your heart. Even his missus was hanging around for no apparent reason. 
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Post by pmatulew on Aug 5, 2013 17:31:04 GMT -5
And what region of the country are you in so we know what resources are local to you?
Welcome to the gang by the way. There will be a test later on the secret handshake.
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Post by pmatulew on Aug 2, 2013 11:51:55 GMT -5
The pdf of the manual is posted right here on this very forum.
itistheride/50 to 200/50 to 200 air cooled/"help for air cooled" (it's a sticky even)/service manuals/50cc 139qmb gy6/page 64
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Post by pmatulew on Aug 2, 2013 11:45:26 GMT -5
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Post by pmatulew on Aug 2, 2013 11:27:04 GMT -5
Same as it ever was. Same as it ever was.
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Post by pmatulew on Aug 2, 2013 5:34:31 GMT -5
D8 Yes, the chain guide is that important. Put it back where it belongs.
The rings? maybe. Some rings are manufactured with the inside edge beveled so that when the combustion gasses hit the bevel from the top side, it will actually force the ring outward so that it seals better. If it's upside down it can't work like it supposed to.
The manual I was reading when I assembled my motor actually said the ring gaps should be staggered at 120 degree angles and never aligned with the wrist pin. As long as they are spread out they're probably fine. It's a BBK anyway. You're going to be blowing it up and rebuilding it before too long anyhow.
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Post by pmatulew on Aug 1, 2013 18:30:17 GMT -5
Or grind off most of two sides of the nut to weaken it, (without damaging the threads underneath or the clutch bell behind it) and then give it a good whack with a hammer and cold chisel. Should break right off. The nut itself is inexpensive and relatively accessible.
Just don't damage the shaft whatever you do.
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Post by pmatulew on Jul 31, 2013 18:03:00 GMT -5
Wen you posted the other day about your engine "binding" and possibly being timed wrong my first thought was "uh oh". These are definitely "interference" engines. If the valves were down when the piston came up....well...  I'd be taking those valves out to see if one is bent. Eyeball them good. Roll them around on the table. Slide them in and out of the guides without the springs and find out what's going on. The valve springs should be more than enough to slam the valves closes anytime they aren't being leaned on by the cam. |
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Post by pmatulew on Jul 31, 2013 17:40:06 GMT -5
I think that the dimension change would be the only consideration for replacing the CVT gasket. If nothing is binding without it then I wouldn't bother. (I didn't) It's not containing any fluids or pressure. The CVT cover is mostly just a dust cover though it does provide some support on the larger 125-150 motors.
If you're so inclined, your local auto parts store can provide you with rolls of gasket material, (thick, thin, fiber, or rubber) for about $5.
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Post by pmatulew on Jul 31, 2013 5:15:16 GMT -5
Mixing the weights half and half (alternating) allows you to get the equivalent of the in between size. Maybe just the thing for fine tuning your results. Or you can purchase additional rollers in standard weights.
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Post by pmatulew on Jul 30, 2013 17:25:13 GMT -5
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