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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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27 Mar 2020 10:27
Meis
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SLEEPER PIPES FOR YAMAHA ENDUROS #204
We are still building Sleeper Pipes...….

Contact me here or email @ This email address is being protected from spambots. You need JavaScript enabled to view it..

Thank You !

"Get Sideways ".....Meis
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01 Jun 2020 17:13
Meis
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SLEEPER PIPES FOR YAMAHA ENDUROS #205
We just finished up Sleeper Pipe #92.....

if your considering getting one now may be a good time ?

We are accepting new orders for Sleeper Pipes !

Turnaround time is approx. 2 weeks once we receive your pipe.

Below is our current price list

1969-1973 CT175 $199. usd
1969-1973 DT250/RT360 $229.
1974 DT250/DT360 $239
1975-1976 DT250/DT400 $239.

You can message me here or email me at This email address is being protected from spambots. You need JavaScript enabled to view it.

Thanks everyone for your continued support !

"Get Sideways ".....Meis
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05 Jul 2020 02:48
yamayeeha
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SLEEPER PIPES FOR YAMAHA ENDUROS #206
I recently received SP90 all the way over in Australia. I am very very happy that I have one.....it has been on my wish list for a while. Just wanted to say from start to finish Dave was great to deal with and the product looks great.
Thanks
Ian
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18 Jul 2020 14:44
Barter73
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SLEEPER PIPES FOR YAMAHA ENDUROS #207
Hello Meis. What’s a sleeper pipe? I’ve just joined the group. I bought a couple of fixer uppers about 18 months ago (CT175 1974, DT250 1982, DT400E 1978) and I’m looking at starting on the 1978 DT400E. I saw on some earlier posts these sleeper pipes were available up to around 1976. My downpipe/expansion chamber was missing along with a load of other parts. I bought what I thought was a half decent downpipe but it is rotten and I think it’s off a 250, not a 400. Do you have some available for my 1978 DT400E and my 1981 DT250? Sorry if I’ve misread what’s available and what you supply. I’ve read so many conflicting reports on parts and what is/isn’t right. It’s driving me nuts in all fairness. I live in the UK but will buy from anywhere. These bikes were cheap and need basically everything. I’m starting with one and hoping to gather information along the way. Any advice or parts you can supply would be greatly appreciated. Many thanks, Mark

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19 Jul 2020 09:09 19 Jul 2020 09:11 by mdscott. Reason: Typo
mdscott
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SLEEPER PIPES FOR YAMAHA ENDUROS #208

Barter73 wrote: Hello Meis. What’s a sleeper pipe? I’ve just joined the group. I bought a couple of fixer uppers about 18 months ago (CT175 1974, DT250 1982, DT400E 1978) and I’m looking at starting on the 1978 DT400E. I saw on some earlier posts these sleeper pipes were available up to around 1976. My downpipe/expansion chamber was missing along with a load of other parts. I bought what I thought was a half decent downpipe but it is rotten and I think it’s off a 250, not a 400. Do you have some available for my 1978 DT400E and my 1981 DT250? Sorry if I’ve misread what’s available and what you supply. I’ve read so many conflicting reports on parts and what is/isn’t right. It’s driving me nuts in all fairness. I live in the UK but will buy from anywhere. These bikes were cheap and need basically everything. I’m starting with one and hoping to gather information along the way. Any advice or parts you can supply would be greatly appreciated. Many thanks, Mark


Hello, what Mr Meis does Is to cut apart the original exhaust and install expansion chamber cones in them. He and her friend have done all the R&D to find out which cones works and which doesn’t, they really work well. Plus keep the original look of the bike. After completed you cannot tell from the outside it was cut apart, all of the cutting done is hidden.

Thanks Mark
Roseville, Ca.

'76 Bultaco 143 Frontera
'06 GL1800
'01 KDX220
'68 YG5T 80 Trailmaster
74 DT360
75 Norton
73 CB500K
63 C200
87 PW50
64 McClane Edger
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19 Jul 2020 14:38
Bigdog302
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SLEEPER PIPES FOR YAMAHA ENDUROS #209
The Sleeper pipe mod allows your stock pipe to perform like a proper Expansion chamber, it even out performs some of the aftermarket pipes like Bassani, Torque Engineering and Hooker to name a few. if you want a stock looking bike yet it performs like it has been modified a Sleeper pipe is a great way to go.

2 1968 DT1s,1970 RT1M,1970 DT1C,1971 RT1B,1971 Honda Z50K2,1974 DT100A 1974DT250A,1974 Honda MT250,2 1975 DT400Bs,1975 Honda CR250M1,1978 DT175E,1979 Honda CR250R.
Dave
Jesus is Lord!
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20 Jul 2020 09:33
Meis
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SLEEPER PIPES FOR YAMAHA ENDUROS #210
Hi Barter73......

I reviewed your list of bikes and we don't build sleeper pipes for any of your bikes.
Not sure about about your UK 1974 CT175 ? Not sure what that is ?

"Get Sideways ".....Meis

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