So i got a beautiful Wurks exhaust pipe from a BDT Motorsports a few weeks ago. My bike was running fine before i installed the pipe, took 2 hours to install the new pipe and started her up. She sounded good but then the engine just stopped out of the blue. After that happened I could not get the engine started, I checked everything several times. Compression averaged 205psi, good strong sparks, new plugs, everything seals good, cleaned the carb 3 times, tried pull staring her, name the test and i preformed it.
So after being unable to start, I tore the engine apart and the piston was in okay shape same with the cylinder but i got it bored and got a new piston anyway. Got all new gaskets and took my time rebuilding the top end, and i had a friend help me to be sure it was built correctly. got the engine in the frame and spent a lot of time being sure all the connections were sealed up. Preformed a compression test and got 200 on the first test which i was satisfied. So I put the gas tank on and connected the fuel line, turned the fuel on. I went to kick it and it was doing what it was doing before the rebuild, it would not start but she was really really trying to start.
So i took the pipe off to reseal it with more RTV, when i took the pipe off there was smoke in the header so i tried blowing it out and the smoke came right back out at me. This puzzled me so i tried blowing through the stinger of the header piece, same thing happen it blew right back at me. So i then put some WD40 from the gallon can in the header piece to see if that would come out of the stinger, guess what it didn't come out. At this point I was pissed, something was clogging the brand new pipe. I had a conversation with someone that used to build 2 stroke pipe and he suggested that i use a water hose to push the clog out.
So i tried that right away and after 15 seconds of turning the hose on and building a lot of pressure in the stinger, i heard a pop and the sound of water flowing. I was excited the clog was out and wanted to see what was causing the problem.
This is what came out of the pipe.
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I called the pipe builder i was talking to and he said the ball was most likely from the chromer. But it should have been checked for when it got back from chrome.
To end the story, this little ping pong like ball costed me a new piston, bore, several gaskets, several hours, and a major headache.
I will be calling BDT Motorsports today about this...
So after being unable to start, I tore the engine apart and the piston was in okay shape same with the cylinder but i got it bored and got a new piston anyway. Got all new gaskets and took my time rebuilding the top end, and i had a friend help me to be sure it was built correctly. got the engine in the frame and spent a lot of time being sure all the connections were sealed up. Preformed a compression test and got 200 on the first test which i was satisfied. So I put the gas tank on and connected the fuel line, turned the fuel on. I went to kick it and it was doing what it was doing before the rebuild, it would not start but she was really really trying to start.
So i took the pipe off to reseal it with more RTV, when i took the pipe off there was smoke in the header so i tried blowing it out and the smoke came right back out at me. This puzzled me so i tried blowing through the stinger of the header piece, same thing happen it blew right back at me. So i then put some WD40 from the gallon can in the header piece to see if that would come out of the stinger, guess what it didn't come out. At this point I was pissed, something was clogging the brand new pipe. I had a conversation with someone that used to build 2 stroke pipe and he suggested that i use a water hose to push the clog out.
So i tried that right away and after 15 seconds of turning the hose on and building a lot of pressure in the stinger, i heard a pop and the sound of water flowing. I was excited the clog was out and wanted to see what was causing the problem.
This is what came out of the pipe.
I called the pipe builder i was talking to and he said the ball was most likely from the chromer. But it should have been checked for when it got back from chrome.
To end the story, this little ping pong like ball costed me a new piston, bore, several gaskets, several hours, and a major headache.
I will be calling BDT Motorsports today about this...
looking to break the sound barrier!
