« previous next »
Pages: [1] 2 3

Author Topic: new pipe  (Read 5773 times)

mroc

  • Newbie
  • *
  • Posts: 40
    • View Profile
new pipe
« on: December 29, 2014, 06:19:53 PM »
Just installed a performance pipe that came with the bike when I bought it used. Last owner said it ran good.with it. Anyway installed it and now bike revs at 12000 + and only goes 65km/h. I am guessing I need to upjet but have no jets right now. Carb and air is stock with 92 jet. Would drilling a few holes in air box help. Any suggestions?
Logged

Triesandluth

  • Hero Member
  • *****
  • Posts: 813
  • Getting it, a mile per hour at a time
    • View Profile
Re: new pipe
« Reply #1 on: December 29, 2014, 06:23:27 PM »
I'd save any definite answers to be from the guys that really know,  but what I would say is that your rollers are putting you above the rpms you need to be. Odd if you were just on a stock pipe...
What weight rollers are you using?
Logged
Almost...at...speed...limit... Aww, brake lights..

mroc

  • Newbie
  • *
  • Posts: 40
    • View Profile
Re: new pipe
« Reply #2 on: December 29, 2014, 06:25:51 PM »
I put in 7 gram sliders when I did.pipe.
Logged

mroc

  • Newbie
  • *
  • Posts: 40
    • View Profile
Re: new pipe
« Reply #3 on: December 29, 2014, 06:27:33 PM »
Was doing 80 km h with stock pipe. Bit really wanna use the performance pipe.
Logged

Triesandluth

  • Hero Member
  • *****
  • Posts: 813
  • Getting it, a mile per hour at a time
    • View Profile
Re: new pipe
« Reply #4 on: December 29, 2014, 06:51:12 PM »
Hmm.  I run the stock pipe,  fully clipped,  with a few holes (not suggested,  mine came with them)  and just went up to a 95 jet.  I may need to go higher.  I'm running 9 gram rollers,  top speed average 42mph gps, past the 80 kmh on the speedo.  That's at about 7500 rpm.  What rpm did you're stock pipe hit?

Just a thought,  does the pipe hold pressure?  If it's cold,  started,  and hold your hand over the outlet it should die, or try to,  and let out a pressure when you remove your hand. 
Don't attempt it hot,  even with a towel.  My dumb a** almost caught fire thinking the towel was resistant enough...
« Last Edit: December 29, 2014, 11:18:24 PM by Triesandluth »
Logged
Almost...at...speed...limit... Aww, brake lights..

BettinANDlosing

  • Hero Member
  • *****
  • Posts: 2235
  • Carter Merz
    • View Profile
    • Columbia Scooters
Re: new pipe
« Reply #5 on: December 29, 2014, 07:07:43 PM »
Weekday brand and model of pipe? Some are designed to work at 12k+. Done are designed for 70cc kit only. You HAVE to upjet to use that pipe, your bike will get damaged without more fuel, especially if your revving it to 12k. What other mods do you have?
Logged
2002 Kymco B&W 300; MRP 78MM "300CC", Naraku cam, Yoshimura rS3 exhaust, 17g Sliders, Yellow torque spring drilled airbox, stock carb #115 main #40 pj.

2001 "Yamaha" Zuma AKA MBK Booster; MHR OverRange, Dellorto 19mm BHBG, Polini "big" intake, RS-3 Rear shock, Stock cylinder.

mroc

  • Newbie
  • *
  • Posts: 40
    • View Profile
Re: new pipe
« Reply #6 on: December 29, 2014, 07:13:59 PM »
I will try this. If it holds pressure then what? I think.it's a technigas trek r pipe but.it's a.guess no markings on pipe. It's about three weeks til my jets arrive. So I either go back to stock pipe or some other solution like perhaps air box mod with needle clip adjustment? I just got he bike a week ago from.inspect the only other mod is performance clutch and bell. I have ordered m4 jets I hope those are the right ones for stock carb. The sizes I got are 95,98,100,105,110,115. Also coming in parcel is roller tuning kit and contra springs three different stiffness. This is my forth super 9 I also have a bws r. I will post a picture of all the bikes soon.
Logged

Triesandluth

  • Hero Member
  • *****
  • Posts: 813
  • Getting it, a mile per hour at a time
    • View Profile
Re: new pipe
« Reply #7 on: December 29, 2014, 07:16:38 PM »
Not trying to hijack the thread, guys,  but quick noob question

Will bolting on a performance pipe jump the rpms a drastic amount,  such as 8k-12k?
Logged
Almost...at...speed...limit... Aww, brake lights..

BettinANDlosing

  • Hero Member
  • *****
  • Posts: 2235
  • Carter Merz
    • View Profile
    • Columbia Scooters
Re: new pipe
« Reply #8 on: December 29, 2014, 07:26:14 PM »
Like i said before, depends on how the pipe was designed. They are "tuned" for specific rpm so once you put the pipe on your engine will try is hardest to be in the powerband. With 7g weights in shocked it revs to 12k without stiff contra. You CANNOT make up for lean jetting with the needle, the needle hardly effects WOT, only the main jet does. And modding your airbox will only lean it out further. If your 50cc still the next is to aggressive for the stock cylinder. If your getting 80kph with the stock pipe you should be pretty stoked about that!
Logged
2002 Kymco B&W 300; MRP 78MM "300CC", Naraku cam, Yoshimura rS3 exhaust, 17g Sliders, Yellow torque spring drilled airbox, stock carb #115 main #40 pj.

2001 "Yamaha" Zuma AKA MBK Booster; MHR OverRange, Dellorto 19mm BHBG, Polini "big" intake, RS-3 Rear shock, Stock cylinder.

mroc

  • Newbie
  • *
  • Posts: 40
    • View Profile
Re: new pipe
« Reply #9 on: December 29, 2014, 07:31:55 PM »
I am installing a.airsal 70cc on another one I guess use pipe for that one. I have a lower model technigas here also maybe I will install that one and see what happens. I like the sound.for.city driving make.me feel safer with all the cagers.
Logged

Triesandluth

  • Hero Member
  • *****
  • Posts: 813
  • Getting it, a mile per hour at a time
    • View Profile
Re: new pipe
« Reply #10 on: December 29, 2014, 07:43:18 PM »
I see,  thanks.  Sorry for putting any possible misinformation!  Just been trolling the forum and thought I'd put my two cents in. 
Good luck on the kit.  I'm planning on one soon.
Logged
Almost...at...speed...limit... Aww, brake lights..

zombie

  • You never know do ya!
  • Hero Member
  • *****
  • Posts: 13870
  • Close enough to get the idea!
    • View Profile
Re: new pipe
« Reply #11 on: December 29, 2014, 08:37:42 PM »
Quote from: mroc on December 29, 2014, 06:27:33 PM
Was doing 80 km h with stock pipe. Bit really wanna use the performance pipe.

I didn't read anything past here...

This just makes me laugh... Perhaps the "performance pipe" is a piece of crap, and the OEM pipe is the real performer here.
Also the 90 main jet is one that has been swapped out already. The oem jet is 78-80.

Plug Chops!!!
Logged
"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken."   Bobby Sands...

mroc

  • Newbie
  • *
  • Posts: 40
    • View Profile
Re: new pipe
« Reply #12 on: January 08, 2015, 04:57:44 AM »
So here is the update. I upjetting stock carb to 98, added purple malosssi contra, and 9.5 g rollers. It's.ripping now 76km/h uphill and plus 80km on flats. I
Logged

zombie

  • You never know do ya!
  • Hero Member
  • *****
  • Posts: 13870
  • Close enough to get the idea!
    • View Profile
Re: new pipe
« Reply #13 on: January 08, 2015, 03:36:19 PM »
That's more like it. Take one thing at a time, and dial it in. The 98 main is rather large... I assume you still have the pipe on there. What kind of rpm are you spinning w/ the 9.5 gr?
Logged
"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken."   Bobby Sands...

mroc

  • Newbie
  • *
  • Posts: 40
    • View Profile
Re: new pipe
« Reply #14 on: January 08, 2015, 09:17:30 PM »
Just in red 7800-8200 rpm
Logged

An Error Has Occurred!

Call to undefined function split()
Back