[Subarumouse]

Hello No No & Co,

I don't know if your engine's have pressure lubrication, i think its (like a GX 390) splashlube.

If so don't go over 5000 / 5500 revs.
If you do, your engine will tear apart in no time.
In the racekartengines there is a centrifugal lube set, that allows you 6500 or even more.
Also take completely out the revlimiter IN the engine, not ty it up.
In the GX Honda's it has the bad habit (when overrev's) to brake in 1000 pieces and therefor ruins the engine.

Sofar No No is right.
Much more power = V twin or other bigger engine with pressurelubrication and more cc's.
Also becouse of the need of more torque in your carts (weight....)

Greetz from NL

Benno