[Megadan]

Intake and exhaust upgrades will be where most of the power would be gained. The carb change is mainly for tuning ease and simplicity. That is the only like for like upgrade being made. The VM26/PZ30 is more than enough carb to support up to about 18-20hp in the limited rev range of these motors.

In my first post you will read that I did just buy a new head assembly to do a port job on, which will be installed later on with, most likely, a 32 or 34mm flat slide carburetor.

The point of this is to mainly show that, if a person gets a Hawk or any GC250 powered bike, what they can realistically expect if they do all of the bolt on upgrades. I have only seen guesses on the power of these bikes, besides the factory rating, when it comes to their power. Everything from 16hp to 20+hp with the basic mods. It would be nice to have some hard figures to toss up as a reference. That is why all figures and dyno charts I want to post will be corrected. The numbers themselves aren't the goal, just the differences.

Then, later on, what can be gained from a basic port job and a proper performance carb setup. Which, at this point, I would guess 20-22whp. The reason I want to do that separately from the bolt on mods, is that most people are generally happy with the bolt ons, or may not want to invest the time and money in head work etc. I will say that my goal with the head work is to not alter the powerband of the bike itself. It's not going to be overly aggressive, just a simple radius smoothing, and port matching to whatever intake I choose to run to make the larger carb manifold work correctly.