KymcoForum.com
General => Technical | How To => Topic started by: Holleyman on August 31, 2011, 03:39:15 AM
-
just changed the pipe on my grand vista , has great take off power, but runasfast as it did before ....top speed now is about 85, was close to 100 before.... any ideas to get top end back?
-
You got the GV up to 100 MPH??? You are brave. I get it to around 74-78 MPH and don't like how it feels. How fast can most of you get on this scooter??
-
100kph is too slow, 100mph unbelievable fast.
Mine had 135-136 kph indicated and 123.x kph on the GPS.
-
Yes that s plenty fast, but since I put the pipe on it hurt the top end, do I need to rejet it ? Any ideas... Bottom end is awesome, just need top end back thanks
-
I hope people dont read this and think a GV250 can go 100 mph ......
They top out at about 75 mph
-
You need to rejet your carb, or at least check it. Any pipe that will make a difference will require the carb to be rejetted.
If you mention which pipe you put on it then someone may be able to tell you what jet to use...
-
If you have the same carb as my Xciting, then you'll likely have a 98 main jet. Without changing the exhaust, I upjetted to a 105 and it runs much better at WOT, and tops out at 130 kmh.
There's a bit of a bog early mid range, I think it's due to the 35 pilot jet, so I'll try a 38 and hopefully quit messing with it.
Pretty simple surgery, actually, just drain the fuel bowl, loosen the intake and manifold clamps, pull the carb free and turn it over and expose the bowl, open it up, switch the jet and slip it back in.
No need to take off the throttle cable or enricher wires, just watch out for the temp sensor wire so it doesn't get unplugged while wou're wrestling the carb around.