pitster....big carb??

[T-Doshi9]

i was wondering if anyone put a bigger carb on the bike!! i am getting a gpx soon and was wondering if i should put that 26mm carb on it!! what do you think?? and has any one done it??

[Kurlon]

Welp, the intake valve is a 23mm unit I believe, so you won't see huge gains going beyond a 23 or 24mm carb. I'd stuff a Mikuni TM24* flatslide on there, along with a hotrodded cam and see where that gets you.

* I'm a Mikuni whore, I'll admit it. I love 'teh snappy' I get with my flatslide.

[Kx250FRiDeR651]

24mm is the usual

[T-Doshi9]

Welp, the intake valve is a 23mm unit I believe, so you won't see huge gains going beyond a 23 or 24mm carb. I'd stuff a Mikuni TM24* flatslide on there, along with a hotrodded cam and see where that gets you.

* I'm a Mikuni whore, I'll admit it. I love 'teh snappy' I get with my flatslide.

what cams fit the GPX !!

[RBracing]

what cams fit the GPX !!

I believe most are running a Crower power cam.

[dancamman]

26 mm takegawa kit works like a champ on the GPX,SDG....125 engine with the G2 cams. I just pulled the SDG 125 head and the Gpx 125 head...they are differen't The Sdg is a larger chamber with a bigger valves like a SE head.... The Gpx is a smaller chamber for more CR , valves are a little smaller also but now as a test i'm throwing on the gPX head to the Sdg....with the Sdg domed piston it will torque up better even with smaller valves.Compression will be up a bit from standard SDG. Dyno tonight ! crower

[Pitster]

Please let us know how it goes for you.

[Kx250FRiDeR651]

how does those new sdg 125s run? i battled one at the track and he seemed to be very under powered..i smoked him in the straight with my 88

[dancamman]

the standard SDG 125 runs good...put a 14 t counter on it and a big gun 50 pipe and our G2 cam and you'll hit 11 hp to the ground....very fast and easy to build and maintain. The stock bike has a 16 t counter and they bog a little off the corners ......regear for best results...crower