Can I change my Merc outboard to a jet pump?
 

I have a new 40 hp Mercury outboard on my 15 ft. aluminum center console.
If I had known the versatility of jet pumps I would have bought one, but now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump. Anyone
have experience with this?

TIA
Mosey

--

Can I change my Merc outboard to a jet pump?
 

I saw jet replacement lower units somewhere but don't remember what sizes
they were. At least I can tell you they exist. I'd be a little skeptical
about 40 hp being big enough. Jets take more hp than props to move the same
size boat at the same speed.
"mosey" wrote in message
.. .
I have a new 40 hp Mercury outboard on my 15 ft. aluminum center console.
If I had known the versatility of jet pumps I would have bought one, but
now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump. Anyone
have experience with this?

TIA
Mosey

--

Can I change my Merc outboard to a jet pump?
 

Mercury builds out board jets. Starting with a 20hp, 40hp, 65hp, and ending
with 80hp. You can see them all at. http://www.mercurymarine.com

Jack
"mosey" wrote in message
.. .
I have a new 40 hp Mercury outboard on my 15 ft. aluminum center console.
If I had known the versatility of jet pumps I would have bought one, but
now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump. Anyone
have experience with this?

TIA
Mosey

--

Can I change my Merc outboard to a jet pump?
 

Merc does make a jet lower unit for your motor. Don't know that it will be
cost effective to change. Plus the added fuel use and less efficient.
I personally would not do it. Raise your motor as high on the transom as
possible. You can tear up a lot of props for the cost of the swap.
Especially if you buy them off ebay or get one of the composite props and
just swap blades.

--
Tony
my boats and autos - http://t.thomas.home.mchsi.com


"mosey" wrote in message
.. .
I have a new 40 hp Mercury outboard on my 15 ft. aluminum center console.
If I had known the versatility of jet pumps I would have bought one, but
now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump. Anyone
have experience with this?

TIA
Mosey

--

Can I change my Merc outboard to a jet pump?
 

That at least makes me think it possible. I saw a 25 hp jet on a game
warden's john boat, very slow, but it went where I can't !
"Lawrence James" wrote in message
ink.net...
I saw jet replacement lower units somewhere but don't remember what sizes
they were. At least I can tell you they exist. I'd be a little skeptical
about 40 hp being big enough. Jets take more hp than props to move the
same
size boat at the same speed.
"mosey" wrote in message
.. .
I have a new 40 hp Mercury outboard on my 15 ft. aluminum center
console.
If I had known the versatility of jet pumps I would have bought one, but
now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump.
Anyone
have experience with this?

TIA
Mosey

--

Can I change my Merc outboard to a jet pump?
 

Sorry about that. The rest of the post vanished.
Mercury Dealers will buy back your old engine and give you a deal on a new
40hp jet. Even if you bought your outboard over the internet. And are
planning to buy the Jet over the net. Most people don't realize that
dealers like having used engines to sell. Used outboards keep there value.
Customers are always buying used engines and boats that are traded in just
like cars.

Jack
"Jack Rye" .# wrote in message
news:TGWmb.35788$Rd4.16704@fed1read07...
Mercury builds out board jets. Starting with a 20hp, 40hp, 65hp, and
ending
with 80hp. You can see them all at. http://www.mercurymarine.com

Jack
"mosey" wrote in message
.. .
I have a new 40 hp Mercury outboard on my 15 ft. aluminum center
console.
If I had known the versatility of jet pumps I would have bought one, but
now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump.
Anyone
have experience with this?

TIA
Mosey

--

Can I change my Merc outboard to a jet pump?
 

Your 40hp magically becomes 25-28 "jet power" with a jet conversion.

Rob
*
*
*

"mosey" wrote in message
.. .
That at least makes me think it possible. I saw a 25 hp jet on a game
warden's john boat, very slow, but it went where I can't !
"Lawrence James" wrote in message
ink.net...
I saw jet replacement lower units somewhere but don't remember what
sizes
they were. At least I can tell you they exist. I'd be a little
skeptical
about 40 hp being big enough. Jets take more hp than props to move the
same
size boat at the same speed.
"mosey" wrote in message
.. .
I have a new 40 hp Mercury outboard on my 15 ft. aluminum center
console.
If I had known the versatility of jet pumps I would have bought one,
but
now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump.
Anyone
have experience with this?

TIA
Mosey

--

Can I change my Merc outboard to a jet pump?
 

All the legs for the O/B's are made by "Jet Drive Specialty Manufacturing"
in San Leandro, Calif. There is a used one for an 80 HP in the latest
Western Outdoor news for $1000.

"mosey" wrote in message
.. .
I have a new 40 hp Mercury outboard on my 15 ft. aluminum center console.
If I had known the versatility of jet pumps I would have bought one, but
now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump. Anyone
have experience with this?

TIA
Mosey

--

Can I change my Merc outboard to a jet pump?
 

Mosey,

Here's a page with some info on jets if you're interested. Covers
pros, cons and maintenance.

http://www.scottandjenn.com/outboardjet/


-JimL

Can I change my Merc outboard to a jet pump?
 

major fuel use increase, and hp loss. Guess you know that

Can I change my Merc outboard to a jet pump?
 

Just to name two disadvantages. :^) Their main advantage, if
it's what you want/need is the shallow water capability.

-JimL

Florida Keyz wrote:
major fuel use increase, and hp loss. Guess you know that

Can I change my Merc outboard to a jet pump?
 

Mosey,

Finally found the page I was looking for. You might want to check
out http://www.smalloutboards.com/j30ljet.htm

They have some early 90's Johnson 30hp outboard motors with jets
for $995 and if you buy a spare jet pump when you buy the motor,
it's $175 extra. Color choices are ugly green or grey. :^) I have
never dealt with these folks, but ran across this site a while back.
I suspect that by the time you converted your motor or traded in on
a jet drive, it would probably cost you at least that much if not
more. Besides, going this route, you could find out if it's what you
really want, and if it isn't, you could always sell the motor without
much loss.

-JimL

mosey wrote:
I have a new 40 hp Mercury outboard on my 15 ft. aluminum center console.
If I had known the versatility of jet pumps I would have bought one, but now
having the new boat and motor wonder if it's cost effective, or even
possible to purchase a kit to change my prop motor over to a pump. Anyone
have experience with this?

TIA
Mosey

Can I change my Merc outboard to a jet pump?
 

Just to name two disadvantages. :^) Their main advantage, if
it's what you want/need is the shallow water capability.


I saw a lot of these in Alaska. The guys said they do it because of rocks. Even
at idle speed a prop won't survive a kiss with a rock. The jet bounces off, up
until the speed that blunt force becomes an issue.

Can I change my Merc outboard to a jet pump?
 

Two more advantages...

Inexpensive. Less that half the cost of an equivalent out-drive.

Simplicity. Two moving parts. No gears, shafts, u-joints, bellows, etc.

--
It's just about going fast...that's all...

http://home.insight.rr.com/cgreen/
"JimL" wrote in message
...
Just to name two disadvantages. :^) Their main advantage, if
it's what you want/need is the shallow water capability.

-JimL

Florida Keyz wrote:
major fuel use increase, and hp loss. Guess you know that

Can I change my Merc outboard to a jet pump?
 

The discussion is on Outboard jets, not inboard. As to fuel consumption, I
run a 3200# aluminum jetboat with a 351W driving the Kodiak pump. About
1.5-2 mpg. Not much worse than prop driven boat. Maybe 85% efficient. Top
speed is less, I run about 39 mph at 4400 rpm. Prop would probably be in
the 48-50 mph range.
The O/B jets do have a gear drive to the pump that is in the foot of the
leg.

Bill

"NetSock" wrote in message
...
Two more advantages...

Inexpensive. Less that half the cost of an equivalent out-drive.

Simplicity. Two moving parts. No gears, shafts, u-joints, bellows, etc.

--
It's just about going fast...that's all...

http://home.insight.rr.com/cgreen/
"JimL" wrote in message
...
Just to name two disadvantages. :^) Their main advantage, if
it's what you want/need is the shallow water capability.

-JimL

Florida Keyz wrote:
major fuel use increase, and hp loss. Guess you know that