What's the most gpm i can get from a Pressure washer?

[MARK W.]

What's the most gpm and psi I can get out of a 16hp engine?

 

[Ron Musgraves]

depends on what psi you want

 

[MARK W.]

3000 to 3500 will be fine.

 

[Ron Musgraves]

pump model will depend of course. with 3000 about 4.2 and with 3500 about 4. to 4.2..


I'm also talking about hot water unit belt drive. if your reffering to a cold unit your volume will increase due to not having a generator you have to move.

also they do make more expensive pumps that claim they can push more volume. ( you dont see many using them)

good luck maybe the wiz will correct anything just incase i'm mistaken. there may be something new on the market or old that i have never used or seen.

 

[MARK W.]

I have a 16hp engine and want to put a bigger pump on the p/w.
The pump I have now puts out 4.8 at 3000 psi. How much of a bigger pump can I go with 16hp? What I'm looking for is more gpm.Can I get 6gpm with 16hp?

 

[Russ Johnson]

At 6 gpm, your top psi with 16 hp will be around 2,500. If this is a hot water machine, you will also have to resize the burner nozzle for more heat gain.

 

[Hotwaterwizard]

This is the Formula to get the answers.
PSI x GPM / 1100 = Gas HP
Reverse the formula and you get this new formula.
Gas HP x 1100 / PSI = GPM

So
16HP x 1100 / 3000 PSI = 5.86 GPM (Rounded off)
16HP x 1100 / 3500 PSI = 5.03 GPM (Rounded off)

 

[Ron Musgraves]

This is the Formula to get the answers.
PSI x GPM / 1100 = Gas HP
Reverse the formula and you get this new formula.
Gas HP x 1100 / PSI = GPM

So
16HP x 1100 / 3000 PSI = 5.86 GPM (Rounded off)
16HP x 1100 / 3500 PSI = 5.03 GPM (Rounded off)

Thanks for the formula WIZ

 

[Sirocco Jerry]

I agree, with the above numbers,
just be aware that running the engine at "full-tilt"
means you have no HP left to run a generator.

12volt burners are more efficient, so you can have your GPM and heat it too !

 

[Paul Kassander]

Just be sure you have a large enough charging system on the engine to support it. 20 amp min is best for an ADC series, 25 amp for an SDC series.

 

[Flipper]

I agree, with the above numbers,
just be aware that running the engine at "full-tilt"
means you have no HP left to run a generator.

12volt burners are more efficient, so you can have your GPM and heat it too !

"Full tilt" may also mean decreased life expectancy...

 

[Ron Musgraves]

"Full tilt" may also mean decreased life expectancy...

I thought most small engines are ment to run full tilt?