Collected GY6 Dyno/Speed/Racing Claims

[90GTVert]

When I had a GY6 150 powered scoot of my own, I was looking for some data to help me decide if I wanted to stick with something mild like 150-155cc or go broke. I searched for dyno numbers and elapsed times for a little while and made some notes. Stumbled across those notes today, so I figured I'd share. I believe most were from Total Ruckus, which is no longer around. I'm really not sure how accurate the info is. Most had no dyno graphs or evidence to back up any claims. No idea about dyno correction factors or accuracy of speedometers or honesty where speeds are noted. At any rate, here are a few numbers for whatever they're worth.

150cc

7.28HP Mods : Air Filter, Exhaust

7.36HP / 6.74TQ Mods : Air Filter, Exhaust Notes : Reported 53MPH Top Speed and 7,000RPM Peak

7.87HP Mods : Air Filter, Exhaust, Endrigo Stage 1 Head & Intake w/Stainless Steel Valves, Titanium Retainers, 3 Angle Valve Job, and Porting

8.6HP Mods : Air Filter, Exhaust, Endrigo Stage 2 Head & Intake

9HP Mods : Air Filter, Exhaust, A9 Cam, Degree Key, 30mm CVK, CVT Mods Notes : Reported 10HP after porting.

9.11HP Mods : Air Filter, Exhaust

9.42HP / 7.64TQ Mods : Air Filter, Exhaust Notes : Reported 64MPH, 7,200RPM Peak

9.8HP / 7.7TQ Mods : Air Filter, Exhaust, Endrigo Racing Head, Aluminum Intake (Port Matched), CVT Work

14.39 @ 42.8MPH 1/8 Mile Mods : Exhaust, CVT Tuning Notes : 12.66 @ 48.6MPH 1/8 mile using 5HP nitrous dry shot

155cc And Over

8.38HP / 6.74TQ Mods : Air Filter, Exhaust, NCY Cam, 58.5mm BBK (155cc)

10.9HP / 7.57TQ Mods : Air Filter, Exhaust, NCY Cam, Ported & Milled Head, NCY BBK, Taida 3600 Crank (177cc)

12.75HP Mods : Air Filter, Exhaust, 30mm CVK, Built by dankfctry w/Stage 2 Head (200cc) Notes : Claimed 80MPH top speed.

13.88HP Mods : A14 Cam, Upgraded Valve Springs, KS Power Ported Head & Intake, Mikuni TM28, CVT Work (190cc)

If anyone has more dyno numbers or elapsed times from drag racing, please share. Preferably with a link to the source if you found them online.

[lilpinny]

I've never dyno'd this bike. I just tuned it with the AFR and figured that's the best I'm going to get. Maybe one day I'll do it. Be nice to have the stats.