BoatBanter.com

BoatBanter.com (https://www.boatbanter.com/)
-   ASA (https://www.boatbanter.com/asa/)
-   -   Inboard Gas Engine ? (https://www.boatbanter.com/asa/76025-inboard-gas-engine.html)

woopei November 20th 06 02:29 AM

Inboard Gas Engine ?
 
I have only had smaller boats with outboards and would like to get a larger boat.
The ones in my price range have engine issues and here is my question.
I understand the preference for diesel over gas but I have never heard
of anyone simply replacing an inboard with a normal engine such as from a
go-kart or Volkswagon or one of those 3 cylinder japanese cars.
I don't see the advantage of a marine engine since when they get wet they are
filled with rust and seized as would my 6hp go-kart engine.

So, does anyone know why I can't replace an engine with a normal gas engine?

Thanks,
Frank

Capt. JG November 20th 06 04:43 AM

Inboard Gas Engine ?
 
Sure you can, but it may require lots of effort to get it to fit and you
need to be concerned with the proper gearing for the prop, etc. If you've
got a lot of time and not much money, it will be a good learning experience.
:-)

--
"j" ganz @@
www.sailnow.com

"woopei" wrote in message
...
I have only had smaller boats with outboards and would like to get a larger
boat.
The ones in my price range have engine issues and here is my question.
I understand the preference for diesel over gas but I have never heard
of anyone simply replacing an inboard with a normal engine such as from a
go-kart or Volkswagon or one of those 3 cylinder japanese cars.
I don't see the advantage of a marine engine since when they get wet they
are
filled with rust and seized as would my 6hp go-kart engine.

So, does anyone know why I can't replace an engine with a normal gas
engine?

Thanks,
Frank




Ringmaster November 20th 06 04:49 AM

Inboard Gas Engine ?
 
but I have never heard of anyone simply replacing an inboard with a
normal engine such as from a
go-kart or Volkswagon

Why that complicated? I'd like to know why manufactures haven't
switched to installing B&S or Kohler lawn tractor engines in boats.
Just think when it blows up it could be replaced for $400-$600 instead
of the $6,000 that Yanmar wants. A 2cyl lawn tractor engine has as
much HP as a Yanmar. What's the problem?


Capt. JG November 20th 06 04:53 AM

Inboard Gas Engine ?
 
You can even use the blade instead of the prop...

--
"j" ganz @@
www.sailnow.com

"Ringmaster" wrote in message
oups.com...
but I have never heard of anyone simply replacing an inboard with a
normal engine such as from a
go-kart or Volkswagon

Why that complicated? I'd like to know why manufactures haven't
switched to installing B&S or Kohler lawn tractor engines in boats.
Just think when it blows up it could be replaced for $400-$600 instead
of the $6,000 that Yanmar wants. A 2cyl lawn tractor engine has as
much HP as a Yanmar. What's the problem?




Maxprop November 20th 06 04:55 AM

Inboard Gas Engine ?
 

"woopei" wrote in message
...
I have only had smaller boats with outboards and would like to get a larger
boat.
The ones in my price range have engine issues and here is my question.
I understand the preference for diesel over gas but I have never heard
of anyone simply replacing an inboard with a normal engine such as from a
go-kart or Volkswagon or one of those 3 cylinder japanese cars.
I don't see the advantage of a marine engine since when they get wet they
are
filled with rust and seized as would my 6hp go-kart engine.

So, does anyone know why I can't replace an engine with a normal gas
engine?


You can, of course, but you'll certainly not help the value or salability of
your boat at resale time. Then there's the issue of cooling--your kart
engine example is most likely an air-cooled engine. How do you propose to
cool that engine in an enclosed space near the waterline? Same with a VW
engine, unless you're referring to one of the later liquid cooled engines,
in which case you'll have to adapt some sort of heat exchanger and
water-cooled exhaust manifold, assuming you'll be running in the brine.
Finding such parts for non-marine engines will be costly, if you can find
them at all. Ultimately you'd be wise to consider replacing the engine with
a proper marine engine, perhaps even a used Atomic Four gasoline engine if
cost is a factor. There is a reason why engines to be used in boats are
*marinized.*

Max



katy November 20th 06 05:43 AM

Inboard Gas Engine ?
 
woopei wrote:
I have only had smaller boats with outboards and would like to get a larger boat.
The ones in my price range have engine issues and here is my question.
I understand the preference for diesel over gas but I have never heard
of anyone simply replacing an inboard with a normal engine such as from a
go-kart or Volkswagon or one of those 3 cylinder japanese cars.
I don't see the advantage of a marine engine since when they get wet they are
filled with rust and seized as would my 6hp go-kart engine.

So, does anyone know why I can't replace an engine with a normal gas engine?

Thanks,
Frank


Becasue it's not water cooled...there are gas engines on sailboats that
aren't water cooled but anyone I knew that ahd one ahd massive problems
with them...

katy November 20th 06 05:44 AM

Inboard Gas Engine ?
 
Ringmaster wrote:
but I have never heard of anyone simply replacing an inboard with a
normal engine such as from a
go-kart or Volkswagon

Why that complicated? I'd like to know why manufactures haven't
switched to installing B&S or Kohler lawn tractor engines in boats.
Just think when it blows up it could be replaced for $400-$600 instead
of the $6,000 that Yanmar wants. A 2cyl lawn tractor engine has as
much HP as a Yanmar. What's the problem?

I just saw an add dor a marin e diesel made from a Kubota tractor
enfine...I think ti was in the new Carolina sailing magazine...

DSK November 20th 06 12:10 PM

Inboard Gas Engine ?
 
but I have never heard of anyone simply replacing an inboard with a
normal engine such as from a
go-kart or Volkswagon


Ringmaster wrote:
Why that complicated? I'd like to know why manufactures haven't
switched to installing B&S or Kohler lawn tractor engines in boats.


Probably because they can't get marine safety approval.

Just think when it blows up it could be replaced for $400-$600 instead
of the $6,000 that Yanmar wants.


And it could blow up your whole boat with it.


It would be possible to stick a lawn mower engine in a boat,
but it would have to be in a vapor tight enclosure which
would make it a PITA. Efficiency would be terrible.

A 2cyl lawn tractor engine has as
much HP as a Yanmar. What's the problem?


Torque & RPM mismatch. A propellor in the water wants to
turn slow with lots of grunt. Jetskis sole this problem by
convertin hi RPMs and low torque into a pressurized column
of water, which is released as velocity.... energy into the
water equals boat moving forward. Works well for a
lightweight high speed craft.

Two big problems for marine installations are fuel vapor,
which is what blows up so many gas powered inboard boats,
and cooling. Scandinavian boats have (or used to have) air
cooling and it worked great two ways, nice warm cabin and
efficient engine cooling. But in a warmer climate, the cabin
will become a sweatbox and the engine will run too hot.

If you had a small cheap engine that could be water cooled
and had fuel injection, I'd say that would be a good
candidate for dropping into a boat. Be prepared for a LOT of
work though; and do youor homework! Unless you've got the
right prop & tranny combination, the end result will not
propel the boat well enough to feel worth the labor.

DSK


Edgar November 20th 06 12:35 PM

Inboard Gas Engine ?
 
My Catalina came with a 'Universal Atomic diesel' of 28 hp which is a fully
marinised Kubota engine. Most marine engines now are based on industrial
engines as purpose built marine units would not generate sufficient quantity
of orders to achieve a reasonable selling price.

"katy" wrote in message
...
Ringmaster wrote:
but I have never heard of anyone simply replacing an inboard with a
normal engine such as from a
go-kart or Volkswagon

Why that complicated? I'd like to know why manufactures haven't
switched to installing B&S or Kohler lawn tractor engines in boats.
Just think when it blows up it could be replaced for $400-$600 instead
of the $6,000 that Yanmar wants. A 2cyl lawn tractor engine has as
much HP as a Yanmar. What's the problem?

I just saw an add dor a marin e diesel made from a Kubota tractor
enfine...I think ti was in the new Carolina sailing magazine...




Edgar November 20th 06 12:43 PM

Inboard Gas Engine ?
 
In the Far East it is common to see open boats with a transom mounted
Volkswagen car engine with the propeller on the end of a shaft coupled
straight to the crankshaft and going down at an angle into the water. No
gearbox, no outboard leg. You steer by swivelling the whole outfit.. They
achieve quite high speeds.

OzOne wrote in message.
...

A friend bought an outboard with a damaged leg and effectively
converted it to an inboard.


Oz1...of the 3 twins.

I welcome you to crackerbox palace,
We've been expecting you.




Scotty November 20th 06 01:49 PM

Inboard Gas Engine ?
 
I've seen a Honda air cooled motor that mated to a saildrive
unit. Can't find a web site, but I remember seeing it
somewhere.
You would need to provide enough air flow for cooling. I'd
want to wrap the exhaust with asbestos, also.

Scotty

"Capt. JG" wrote in message
...
Sure you can, but it may require lots of effort to get it

to fit and you
need to be concerned with the proper gearing for the prop,

etc. If you've
got a lot of time and not much money, it will be a good

learning experience.
:-)

--
"j" ganz @@
www.sailnow.com

"woopei" wrote in message
...
I have only had smaller boats with outboards and would

like to get a larger
boat.
The ones in my price range have engine issues and here

is my question.
I understand the preference for diesel over gas but I

have never heard
of anyone simply replacing an inboard with a normal

engine such as from a
go-kart or Volkswagon or one of those 3 cylinder

japanese cars.
I don't see the advantage of a marine engine since when

they get wet they
are
filled with rust and seized as would my 6hp go-kart

engine.

So, does anyone know why I can't replace an engine with

a normal gas
engine?

Thanks,
Frank






Scotty November 20th 06 01:54 PM

Inboard Gas Engine ?
 
Saw that in one of the Bond 007 movies.

Scotty

"Edgar" wrote in message
...
In the Far East it is common to see open boats with a

transom mounted
Volkswagen car engine with the propeller on the end of a

shaft coupled
straight to the crankshaft and going down at an angle into

the water. No
gearbox, no outboard leg. You steer by swivelling the

whole outfit.. They
achieve quite high speeds.

OzOne wrote in message.
...

A friend bought an outboard with a damaged leg and

effectively
converted it to an inboard.


Oz1...of the 3 twins.

I welcome you to crackerbox palace,
We've been expecting you.






Scotty November 20th 06 01:57 PM

Inboard Gas Engine ?
 
On my first boat I stole my Grandmas Victrola, the wind up
type, and hooked it up to a fan blade. Worked well until
Granny found out.

Scotty


"Capt. JG" wrote in message
...
You can even use the blade instead of the prop...

--
"j" ganz @@
www.sailnow.com

"Ringmaster" wrote in message

oups.com..
..
but I have never heard of anyone simply replacing an

inboard with a
normal engine such as from a
go-kart or Volkswagon

Why that complicated? I'd like to know why manufactures

haven't
switched to installing B&S or Kohler lawn tractor

engines in boats.
Just think when it blows up it could be replaced for

$400-$600 instead
of the $6,000 that Yanmar wants. A 2cyl lawn tractor

engine has as
much HP as a Yanmar. What's the problem?






Frank Boettcher November 20th 06 02:38 PM

Inboard Gas Engine ?
 
On Mon, 20 Nov 2006 13:35:16 +0100, "Edgar"
wrote:

My Catalina came with a 'Universal Atomic diesel' of 28 hp which is a fully
marinised Kubota engine. Most marine engines now are based on industrial
engines as purpose built marine units would not generate sufficient quantity
of orders to achieve a reasonable selling price.


True. The atomic four gasoline engine was just a marine converted
industrial engine used in welding machines, lift trucks, pumps,
compressors, generators and a miriad of other industrial applications.
When I needed parts, I went to the industrial suppliers, much less
expensive than the marine sources.

Frank

"katy" wrote in message
...
Ringmaster wrote:
but I have never heard of anyone simply replacing an inboard with a
normal engine such as from a
go-kart or Volkswagon

Why that complicated? I'd like to know why manufactures haven't
switched to installing B&S or Kohler lawn tractor engines in boats.
Just think when it blows up it could be replaced for $400-$600 instead
of the $6,000 that Yanmar wants. A 2cyl lawn tractor engine has as
much HP as a Yanmar. What's the problem?

I just saw an add dor a marin e diesel made from a Kubota tractor
enfine...I think ti was in the new Carolina sailing magazine...




katy November 20th 06 09:16 PM

Inboard Gas Engine ?
 
OzOne wrote:
On Mon, 20 Nov 2006 08:54:17 -0500, "Scotty"
scribbled thusly:


Saw that in one of the Bond 007 movies.

Scotty



You need to get a passport....


Oz1...of the 3 twins.

I welcome you to crackerbox palace,
We've been expecting you.


They won't give him one...they're afraid to let him out of the country...

Scotty November 21st 06 12:06 AM

Inboard Gas Engine ?
 

OzOne wrote in message
...
On Mon, 20 Nov 2006 08:54:17 -0500, "Scotty"


scribbled thusly:

Saw that in one of the Bond 007 movies.

Scotty


You need to get a passport....


to sail the Chesapeake Bay?

Ozzy, your nuts!

Scotty



Scotty November 21st 06 12:07 AM

Inboard Gas Engine ?
 

"katy" wrote in message
...
OzOne wrote:
On Mon, 20 Nov 2006 08:54:17 -0500, "Scotty"


scribbled thusly:


Saw that in one of the Bond 007 movies.

Scotty



You need to get a passport....


Oz1...of the 3 twins.

I welcome you to crackerbox palace,
We've been expecting you.


They won't give him one...they're afraid to let him out of

the country...

I was in Bermuda this year. Does that count?

Scotty



katy November 21st 06 02:33 AM

Inboard Gas Engine ?
 
Scotty wrote:
"katy" wrote in message
...

OzOne wrote:

On Mon, 20 Nov 2006 08:54:17 -0500, "Scotty"




scribbled thusly:



Saw that in one of the Bond 007 movies.

Scotty



You need to get a passport....


Oz1...of the 3 twins.

I welcome you to crackerbox palace,
We've been expecting you.


They won't give him one...they're afraid to let him out of


the country...

I was in Bermuda this year. Does that count?

Scotty


No...but speaking of out og the country, I got a letter from our son
with photos of the kids grom South Korea...he sent it over a month ago.
It came in one of those US postal "Sorry but your mail was damaged in
transit" envelopes...only it hadn't been damaged...it was razor-b;aded
open at the top...suppose it sat in some CIA guys office for a while?

Scotty November 21st 06 05:23 PM

Inboard Gas Engine ?
 

"katy" wrote in message
...


No...but speaking of out og the country, I got a letter

from our son
with photos of the kids grom South Korea...he sent it over

a month ago.
It came in one of those US postal "Sorry but your mail

was damaged in
transit" envelopes...only it hadn't been damaged...it was

razor-b;aded
open at the top...suppose it sat in some CIA guys office

for a while?

I've got a S. Korean customer. Always trying to cheapen my
rates.

Scotty




katy November 21st 06 07:03 PM

Inboard Gas Engine ?
 
Scotty wrote:
"katy" wrote in message
...


No...but speaking of out og the country, I got a letter


from our son

with photos of the kids grom South Korea...he sent it over


a month ago.

It came in one of those US postal "Sorry but your mail


was damaged in

transit" envelopes...only it hadn't been damaged...it was


razor-b;aded

open at the top...suppose it sat in some CIA guys office


for a while?

I've got a S. Korean customer. Always trying to cheapen my
rates.

Scotty



That's a cultural thing...they do not buy anything at the face cost...if
you go to the market or store over there and just pay up, they look down
their nose wondering what's wrong with you that you'd throw your money
away like that. Haggling is a national pastime.

Scotty November 21st 06 07:07 PM

Inboard Gas Engine ?
 

"katy" wrote in message
...

I've got a S. Korean customer. Always trying to cheapen

my
rates.

Scotty



That's a cultural thing...they do not buy anything at the

face cost...if
you go to the market or store over there and just pay up,

they look down
their nose wondering what's wrong with you that you'd

throw your money
away like that. Haggling is a national pastime.


So, I should try and 'haggle' my prices *up* ?

Scotty



katy November 21st 06 07:14 PM

Inboard Gas Engine ?
 
Scotty wrote:
"katy" wrote in message
...

I've got a S. Korean customer. Always trying to cheapen


my

rates.

Scotty




That's a cultural thing...they do not buy anything at the


face cost...if

you go to the market or store over there and just pay up,


they look down

their nose wondering what's wrong with you that you'd


throw your money

away like that. Haggling is a national pastime.



So, I should try and 'haggle' my prices *up* ?

Scotty


You are the hagglee because you have the business...it doesn'tr work
that way...start out with a higher price with him initially so that he
can haggle down to what you want to be paid...

Scotty November 21st 06 08:18 PM

Inboard Gas Engine ?
 

"katy" wrote in message
...


So, I should try and 'haggle' my prices *up* ?

Scotty


You are the hagglee because you have the business...it

doesn'tr work
that way...start out with a higher price with him

initially so that he
can haggle down to what you want to be paid...


I did, he haggled me down some already......threatened me
with a nuke!

Scotty




All times are GMT +1. The time now is 11:35 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 BoatBanter.com