Conversion to jet drive

I did a I/O to jet drive several years ago. Had to fit the jet drive through a hole in the bottom, add a stringer stystem to mount the engine to. It was a big project, but it was well worth it. This was on a small 16' boat. It would go from zero to 55mph in a very short amount of time. I think that jets work best on small light weight applications.

Steve H

 

I am new here, was doing a search for jet drives and found this site. I have an 18 foot aluminum Crestliner with a 120 hp OMC stern drive. The motor is junk and the intermediate housing has some corrosion. I have a Nissan 2.5 litre diesel engine. The plan was to marry it to the OMC leg but I have my doubts about the durability of the leg so I have been thing about other options. An out board motor was one option, but I would prefer to run the diesel. A Volvo leg is another option and today I thought about jet drives. The hull will be fairly easy to cut a piece out of for the unit. Any words of wisdom and or advice would be appreciated. BC Mike C

 

there's lots of options, none of them cheap. You will need to know the RPM range of the diesel and then match it up with the right jet with the right impeller. I'd suggest you google Marine Jet Drives. You'll get a lot of sites to look at.

Alec

 

parker jets

Hi,
I'm new to this forum..found it by searching the web for jet drives. I recently got an ex-US Navy 30' rigid inflatable with twin parker pp jets, powered by twin 300hp Iveco diesels. I've spoken with the people who operated it for the navy and it got good reviews. My reason for posting is to let you know that I also got lots of spare parts for the engines and the jets (no impellers though) - technical manuals; shafts; buckets; complete fiberglass housings and many component parts. They are located in Hawaii. If anyone has an interest in them please contact me directly at sunrider@lisco.com. thanks.
Bryan

 

Development engineer, hydrodynamics

The PP-jets were taken over by Vosper Thornycroft, GB. The types produced have been revised, but some are still available, try to reach Mr Brent Voce, VT Hydraulics.

The Finnish Alamarin should be "red marked", as they are below standard regarding thrust, due to restricted inlets (type no:s do not show inlet dia).

Good luck!

 

President, Prop Shop Sales and Repair LTD

We have a company that repairs impellers. We have just recieved a set of (what we think are PP Jet) impellers that are very badly damaged. We are able to repair these impellers but I need some specs. to turn the diameter to. They are approx. 11 1/4" in diameter. Any help would be appreciated. Rick

 

Jet Drive Conversion

There is a company in Florida called OpsJet which manufactures an outboard jet drive which suits your purpose, I believe it runs about 18,000 USD for a 200 horsepower diesel.
There is also a company in Gloucester Massachusetts called Gloucester Marine Propulsion which is making a next generation jet drive, I'm tolds its very slick and efficient. If I can believe what I'm told the 275 diesel will retail for about 17,000 usd. I saw an engineering report that indicated that the GMP unit is about 25% more efficient than competitive units....

 

Is it a lot of work and money? I can do all of the modifications to the hull myself, as I have extensive fibreglass experience. Not so for the mechanical part, though. Any information you can give would be appreciated.

Kevin

 

ed fitz
I am considering buying a US Navy 30ft rigid inflatable with Parker PP jets and Iveco diesels. Can anybody tell me the size of the jets, 10", 11", 12",etc.? I need a location for parts. I believe PP jets were taken over by Vosper Thorny Craft, in GB, but have been unable to contact them. fitz0739@yahoo.com

 

jet drive

. I have what i think is a pp jet drive coupled to a 3.1 v6 ford,at the nozzle end of the drive,there should be cup or 'bucket' which can be moved up or down,to create neutral or reverse,but it is missing.does anyone know where i could get one? thanks.

 

PP Jet are now owned by Vosper Thorneycroft in the UK

If you PM me I will send you contact details for the person that deals with PP Jet stuff

 

I Am In The Process Of Converting A 24 Ft Hurricane Hull To Center Console Jet 330 Hp Cummins With A 274 Hamilton Jet Expected Cruise Speed 36 Kts At 5200 Lbs Cost Of The Powertrain 40k You Do Have The Option Of Gas For About Half The Price. I Will Say The Hamilton Jet Through Atlantis Gear Topsfield Ma Have Been Great To Work With

 

jet drive probs

hello anyone out there no were i can get parts for my pp jet drive ?? and has anyone put one on a v8 rover lump , i need to know the angle the jet drive should be instaled at , any help much appretiated che ers .

 

I have a 30' Novamarine, ex-military, that has twin PP jets. I have a few parts and may be able to help find what you need, and would be glad to share the info I have. I don't check this forum often so please email direct to sunrider@lisco.com if I can help. also, if anyone has a twin to my boat I would like to hear from you to share info.
bryan

 

Well, here it is 2007 and my project is still in the planning stages, though we have put the subject boat "on the hard" to get the process moving forward. The last couple of years have been a little frustrating. I went to the trouble, work and expense of trying to get one last rebuild/overhaul/upgrade of the starboard veedrive, installed additional oil coolers, upsized and upgraded the pump, (closer tolerances), installed additional lubrication points, a two stage filtration system, pressure guages to confirm fluid flow, valving, and upgraded bearings. Bench tested the completed rebuild, read all bearing surface temperatures, re-adjusted all bearing clearances after a two hour run-in period, dye tested all gear lash and mesh with prussian blue gear paste, and did everyrthing I (and the brain trust) could think of to give this damn thing every possible advantage. Lasted aprox. 14 hours under moderate load. Blew up (internally) and left us limping back on one engine and the Port tranny.

Enough is enough.

Fortunately, the vintage of the boat makes it worthwhile going to a refit and re-thinking of the drive system, and the progress that has been made in water-jet technology makes the decision even easier.

Current fore-runner is the Doen Jet. The DJ100 is a transom mount 10 inch impeller high thrust jet that may just fit the bill.

The process has begun anew.