GPM Increase

Wiz,
I have a 13hp Honda with 120 volt generator and a TS2021 General pump. I have 3000psi @ 4 gpm. I want at least 5.5 gpm with no pressure loss. Can I increase gpm using the same pump and just increasing motor size to say the 18hp Honda? Or, do I have to change the pump as well. I have a trailer unit and have been thinking about buying a portable cold unit for back up. I might order a cart for the motor and pump I have now, then put larger back on trailer unit. Shouldn't a see a noticable difference with the 5.5 gpm? Your thoughts?
Glenn

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"Hmmm, If everyone has a photographic memory... mine must be out of film."

You will need to change the pulleys too. What size do you have now? You also need a different size tip. It will definately work though.

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Hotwaterwizard@aol.com If You have a problem with your machine, just ask me for help. Check out the Machine Problem Board