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Post by wilds on Jul 12, 2015 14:49:38 GMT -5
On sveral GY6 exhaust headers theres two pipes in the header!  This is how it looked when I cut my header, the small inner pipe goes all the way to the muffler... No wonder the engine can't breath! |
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Post by wilds on Jul 12, 2015 0:44:03 GMT -5
I have also been looking good light bulbs to my scooter but never found anything that worked good enough, so I added some auxiliary LED Cree lights on my scooter. Cree Led LightsReally pleased now! |
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Post by wilds on May 31, 2015 0:24:54 GMT -5
That is my chart which I found on a french site...
I have tried A14 on my 125cc and the lobs compresses the valve spring to the absolute max.
I would go with the A9 or A11...
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Post by wilds on May 8, 2015 23:32:28 GMT -5
White wire is normaly 12V AC to the headlight
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Post by wilds on May 8, 2015 7:35:00 GMT -5
You see how much he had to cut...
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Post by wilds on May 6, 2015 23:49:35 GMT -5
Actually i just want to fix that rattle noise. i don't want to change the inside. So, cutting it where i marked it in the picture will allow me to take out what is inside and make repairs? If I don't remember wrong you want be able to see into the muffler because of the "chamber wall" at the back. I suspect that the rattling sound you hear is one of the tubes that runs between the chambers because which is loose. But if you are lucky it could be that last pipe at the end of the muffler and you will see it and be able to weld it back again. Here's a good video of how it can look like inside: |
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Post by wilds on May 6, 2015 23:33:25 GMT -5
If you drill a few rows of holes in that 2" pipe around the entire circumference&length then pack fiberglass around the outside of the pipe that will get rid of most of your crackle db(without losing any flow, your damper does look a little restrictive to me) and cause more of a deep thump,,I've built many free flow exhausts and if you duplicate a glass pack they work well as the glass deadens the sound that gets forced through the holes pretty well and still allows full free flow through the pipe:) I can promise you there is no restriction at all. That little valve at the backend is so I can set it so it gives some backpressure (and keeps the noise down). Maybe I should've mentioned that it has a pipe that looks like this inside:  and it's filled with muffler fiberglass, otherwise it would be too loud... This is how the whole system looks like:  The header pipe is a step-up type and it starts from 19mm and is stepped up to 28mm to 30mm to 32mm. That is just so the exhaust gases will have room to expand on the way out. |
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Post by wilds on May 6, 2015 0:02:42 GMT -5
I had a similar muffler and cleaned it out so that it became free flow. There are several chambers in the muffler so I had to cut it at both the back and the front and then make a cut along the muffler from the front to the back to get it opened. There is a pipe that winds back and forth inside the muffler which makes the exhaust pass each chamber. On my exhaust system there was also a small catalyst mounted on the pipe inside the muffler... I ripped everything out and welded a 2" exhaust pipe right through the inside of the muffler. Finally I mounted my own "DB-killer".  |
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Post by wilds on Apr 22, 2015 23:30:13 GMT -5
I don't like that clanking sound...
Sounds like the weights in the variator is badly worn or your crank is about to give up.
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Post by wilds on Apr 16, 2015 23:39:55 GMT -5
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Post by wilds on Apr 16, 2015 23:18:58 GMT -5
Did you try a bigger pilot jet?
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Post by wilds on Apr 15, 2015 3:32:10 GMT -5
The accelerator pump is not in play on decel.
Normaly, popping on decel depends on:
Too small pilot jet.
A leak between the cylinder and the header pipe or muffler.
A leak between the carburetor and intake.
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Post by wilds on Apr 14, 2015 23:26:20 GMT -5
Sounds like your pilot jet is a bit too small
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Post by wilds on Apr 14, 2015 23:23:10 GMT -5
"Albedo100 Reflective Spray" is another name on this product!
Volvo made a good publicity stunt with this movie...
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Post by wilds on Apr 12, 2015 0:29:21 GMT -5
You also have to think about how you should handle warranty cases.
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