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  1. #1

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    rossier pipe 951: everything I've learned.

    Alright, no answers thus far. I've been sending emails, calling people, searching far and wide, high and low, and I've come up with my own group of info. There is water routing info, leak repair, and jetting that a few people have used.

    First, Microtouch routing information. Found this on SBT, which helped a lot.
    Click image for larger version. 

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    http://www.shopsbt.com/forum/afterma...elp-lol-2.html

    also a bit from a guy at pwc today, post 39:
    http://www.pwctoday.com/showthread.p...=1#post1725385
    Last edited by nickmm; 07-17-2013 at 10:45 PM. Reason: research


  2. #2

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    One more for the water routing:Click image for larger version. 

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    Next, Leak testing. To test for a leak, set up a 1/2 hose between the two 1/2 in fittings, then attatch a pop-off tester to the 90* 1/4 in line.
    Click image for larger version. 

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    If, Like me, you have an internal leak (can't hold 6-10 psi, with less than 1psi/min drop)
    you may need to cut into it. But where? No matter, fill the pipe with water and look for bubbles. Then mark roughly on the outside and cut.
    Click image for larger version. 

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    Find a well qualified welder to repair any cracks, holes, etc. I had a hole from excess fuel or some sort of hotspot near the stinger of my pipe.

  3. #3

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    Click image for larger version. 

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    This is my pipe. Had a few spots where the metal rotted, and was very soft.

    Another person online had this failure:
    Click image for larger version. 

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    This seems to be a common one.

    On to jet specs:
    disccussion on rossiers recomended specs
    http://www.pwctoday.com/showthread.php?t=138826

    One gent started with this:
    2.3 N&S
    170 Main
    95 Pilot
    115 GR. Spring
    Proks & Outerwears, ported & matched Ex Manifold & stock carbs (no choke).
    but it was also suggested possibly using a 160 main with the same setup.

    another setup:
    Running PPG level one, carbon tech reeds, no accelerator pump. I am running the 2.3 needle with 115 gram spring. 95 pilots. 160 mains. Tried 170 and I slowed down.

    I am going to personally run the 170, 95, 2.3 n/s 115g spring combo in two weeks and find out for myself, I will return with results.

    PLEASE!! Chime in with any experience guys. There are so few of these out there, and yea, its kinda passed the 951/2-stroke hey-day, but this info could really save someone down the line.

  4. #4
    Nickeljet's Avatar
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    I run twin pipes with RXX mpem 2.3 n&s 115 gram spring 97.5 pilots 165 main on mag and 160 on pto. I turn a 13/21 prop @ 7550 rpm and hit 70 occasionally but run 69 usually It has a cut down R&D manifold with rinaldi reeds & spacer. The engine has about 30 hrs on it with no problems (knock on wood)

  5. #5
    I have a rossier pipe on my miller 1050. I thought i got it running good. Till the other day, the ' death rattle ' started. Needs a top end rebuild broke a piston pin in half. Never done that before.
    So i still haven't worked out this pipe yet.

  6. #6

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    I purchased a new 1999 GSX Limited in 1999 and shipped it to Rossier in Wisconsin and they put all their stuff on it including their pipe--tuned it--ran/rode it and set it back. Wow--what a ride was 66 MPH back then. Sold it in 2004 to one of my neighbors here on the lake. He still has it and it runs a good as ever. He won't sell it back to me darn it. In my opinion the Rossier pipe was the best pipe for the 951.

  7. #7

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    Quote Originally Posted by Sundance View Post
    I purchased a new 1999 GSX Limited in 1999 and shipped it to Rossier in Wisconsin and they put all their stuff on it including their pipe--tuned it--ran/rode it and set it back. Wow--what a ride was 66 MPH back then. Sold it in 2004 to one of my neighbors here on the lake. He still has it and it runs a good as ever. He won't sell it back to me darn it. In my opinion the Rossier pipe was the best pipe for the 951.
    Very cool. Hopefully we get it dialed up. Waiting for the thaw still . With an RXX, coffman piped gsx, and my 1050 setup, I'm thinking the rossier pipe might be much though. That's a lot of work to keep up.

  8. #8
    I love my rossier pipe in my 951 hx

  9. #9
    Anybody running water injection on these pipes? If so what time are u having the water turned on and off and what jets are u using

  10. #10
    No one????

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