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Makotosun

SLEEPER PIPES FOR YAMAHA ENDUROS

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Replied by Makotosun on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Agreed it is somewhat different, however, I was thinking (which usually gets me into trouble!) that the pip they are using is very close to that on a 250/360 stock pipe. Wondering if the "theory" could be applied to your builds, even if incorporating a spark arrestor.

Thinking my Suntank may need the benefit of your magic one of these days !
IF it isn't one thing, it's another.
17 Dec 2016 18:01 #51

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Replied by MarkC on topic SLEEPER PIPES FOR YAMAHA ENDUROS

I finally got my sleeper pipe installed on my 1976 DT400, I love it!

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1973 AT3
1974 MX80
1974 DT175
1975 GT80
1975 DT100
1975 DT125
1975 DT175
1975 DT250
1975 DT400
1976 DT400
11 Feb 2017 13:44 #52

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Replied by on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Hi Mark.......

Glad to hear you like your "Sleeper Pipe"... :OnFire

Can you tell us a bit what you noticed about the performance ?
11 Feb 2017 20:04 #53

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Replied by Redfro on topic SLEEPER PIPES FOR YAMAHA ENDUROS

I would like to get my at2 pipe done when you start doing them again.
12 Feb 2017 11:41 #54

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Replied by Celtic16 on topic SLEEPER PIPES FOR YAMAHA ENDUROS

I'd like to get my RT3 pipe done.
Last edit: 12 Feb 2017 13:12 by Celtic16. Reason: Checking notification box
12 Feb 2017 13:11 #55

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Replied by MarkC on topic SLEEPER PIPES FOR YAMAHA ENDUROS

It has more low-end and midrange power and seems to have better throttle response.

I rode the 1976 DT 400 with the sleeper pipe and then the 1975 DT400 with a stock pipe there is a noticeable difference.
1973 AT3
1974 MX80
1974 DT175
1975 GT80
1975 DT100
1975 DT125
1975 DT175
1975 DT250
1975 DT400
1976 DT400
12 Feb 2017 13:50 #56

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Replied by Makotosun on topic SLEEPER PIPES FOR YAMAHA ENDUROS

I would love to be able to try that sometime and see what the seat of the pants dyno says :)
IF it isn't one thing, it's another.
12 Feb 2017 16:54 #57

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Replied by 1BADV6 on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Hi Dave,

I have an AT2 pipe that I would like to have you do the sleeper pipe mod to. Let me know where to send it.

thanks
Dave
02 Mar 2017 19:07 #58

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Replied by oldfart666 on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Mark,what model and year is that gas tank on your '76 DT400?
03 Mar 2017 06:57 #59

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Replied by mdscott on topic SLEEPER PIPES FOR YAMAHA ENDUROS

So I've read a little here about sleeper pipes, expansion chambers really help.
My question how do the 74 DT250 stock pipe fair, are they pretty good or can you modify them to get more power. Also I dont see info on the MX250/360 modifying them, they are very similar in shape as the DT's the same year.
Thanks Mark
Roseville, Ca.

'03 ST1300
'75 Norton
'73 CB500K
'81 Honda CT110
'87 PW50
'64 McClane Edger
'65 Honda S90
03 Mar 2017 08:23 #60

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