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SLEEPER PIPES FOR YAMAHA ENDUROS

14 Jan 2020 17:44
MarkT
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SLEEPER PIPES FOR YAMAHA ENDUROS #201
I was thinking (hoping?) the master sleeper pipe team of Meis and DVM might be able to install a cone to internally shorten the tuned length to better match the porting and make the pipe work at higher RPM to match the cylinder...

1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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15 Jan 2020 08:34
RacerClam
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SLEEPER PIPES FOR YAMAHA ENDUROS #202
Call Dan at JEMCO Exaust he can still make a chamber for that . 713-461-3834

Rich

racerclam
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15 Jan 2020 12:47
FrankC
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SLEEPER PIPES FOR YAMAHA ENDUROS #203
I think with the way the pipe starts on the left side of the bike and stinger/ muffler on the right makes it difficult to get a cone in there. It doesn't angle toward the muffler side per sey but just jogs the rear cone to that side. It also has a few dents to go around 2 frame tubes, and carb cable. Also further up the belly has a dent for spark plug boot clearance. Seems this jogging and clearance in between these dents would make it hard to stuff a cone in there, dunno. I believe I saw pictures here (on the forum)that showed some baffling material in the belly behind perforated steel, and a plate as a crude reflector in the convergent cone area. It has a hole to let gas pass through. My memory may have failed but you might be able to pull that up with the search feature.
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