Old 03-01-2006, 07:13 PM
The Lawn Crew The Lawn Crew is offline
LawnSite Member
Join Date: May 2003
Location: New York
Posts: 113
Hypro D30 to D50 Conversion with 5HP Engine

D30 Pump is cracked, from previous owner. Wish to convert to a D50) Hypro and mount it to the same 5HP Kawasaki (new) engine, before later swapping it for an 8hp.

The Hypro lit indicates the pressure regulator is the same for the D30 and D50. The engine has a 3/4" shaft with an older style (1990) gear reduction unit.

Does anyoone know if this is a direct swap? How far off on performance will it be with a 5hp engine?


PS: How is the hypro 13381-0011? Using approx 12gpm.

Last edited by The Lawn Crew; 03-01-2006 at 07:18 PM.
Reply With Quote
Old 03-02-2006, 08:41 AM
Rhett@Gregson-Clark Rhett@Gregson-Clark is offline
Join Date: Jan 2006
Location: Caledonia, NY
Posts: 36
Is your gear reduction part of the engine or is it part of the pump? In either case you have some options. You will be pressure limited with 5 HP. The required HP is a function of flow and pressure. The flow is predetermined by the size of the pump. Pressure obviously is adjustable so at lower pressures (250 psi and less) your engine will probably handle it ok. More than that will likely overwork the engine. If your pump is direct coupled to the engine with the Hypro gear reduction (9910-KIT1640) you can reuse it to run the D-50. However when you convert to a 8-9 HP engine you will need a different gear reduction (9910-KIT1642) to accomodate the 1" shaft engine. If your gear reduction is part of the engine you should be able couple it up to the D-50. The 3381-0011 is a decent gun. You would probably want it with a 3.0 or 3.5 tip with a 12 gpm pump. Keep in mind the pumps rated max flow is at 0 psi. At 200-300 psi it will be less. Good luck!
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Layout Style:

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Grand View Media
All times are GMT -4. The time now is 09:15 AM.

Page generated in 0.05676 seconds with 8 queries