ORIGINAL: Ralphbf
One thing I have noticed with just running a pipe on a stock engine is there is gain every where.
The right pipe adds to the bottom the mid range and the top rpm.
When the engine is ported the bottom end power goes away and the mid and top end are enhanced. Now I know this isn't always the case but usually it's true.
The longer the stinger the higher the operating range.
Low end comes from short fat stingers
The stinger is the pipe that the exhaust actually exits.
I've noticed this same thing.
A pipe on a stock gasser (G-62) adds power across the whole range. It's not peaky. I never notice it "come on the pipe" like a glow engine. I've had a pipe on a glow engine before, and you can definetely tell when the motor comes up on the pipe. Big shot of power at a certain RPM--and pulling like gangbusters from there up to max RPM.
Not so with the G-62 on a pipe. It's just smooth power from idle to max RPM. I gained 1200RPM on the top. Spool-up from low end is dramatically faster. No more midrange burble. It actually sounds quieter than the side dump exhaust divertor that I was using before.
Now I want to run a pipe on every gasser I have. Wish I had the money to buy all those pipes.
Does anyone know of a header that will bolt up to the Ryobi? [:-]