Engine and Tranny into a boat?

this isn't as good of an idea as you think.... the marine environment is
harder on an engine than drag racing. unless that 267 has a 4 bolt main, I
wouldn't even bother. you have many more issues than sealing around the
shaft.... for that you use a "stuffing box" that you can buy at a "real"
boatyard (i.e. the ones that actually build boats). your main issue is
cooling... most marine engines draw straight out of the water, not what your
engine is set up for. on a related note, you need water cooled exhaust
manifolds, a proper transmission (I've seen powerglides used in 20'
inboards) and a cam setup for marine use. remember boats don't use
overdrive and you'll be at sustained high RPM's with a high load.

you'd be much better off fixing the mercruiser, IMHO. and remember, if you
do get this thing cobbled together, the coast guard doesn't play when it
comes to safety.

-Bret

<reitze.TakeThisOut@comcast.net> wrote in message news:3F232841.BC91BD7C@comcast.net...
 > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a good
 > 267 (v and tranny. The boat is pretty rough and has a 165hp
 > mercruiser. I'm wondering for the pain in the ass of getting it
 > running with water under it and so-on maybe I could just put the prop
 > onto the drive-shaft of the 267 and figure a mount. the only issues I
 > can think of are the seal arround the shaft, and the ratio. Anyone know
 > a mercruiser's ratio? How bout the ratio of a 267 V8 to the drive-shaf
 > for the 80 camaro? I figure the tranny would be really cool for
 > choosing fast or pulling a skier.
 > Thanks,
 > Elliott
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

This sounds reasonable... Hoping the outdrive is OK on the new boat.
Seems others are fearful of cooling... Well a radiator works on a car in
traffic - and I'm sure it would work on a boat too.
I was thinking I could mount it behind the boat with an electric fan (like
hot-rods use). Once I get the bugs out I may turn this $500 boat into a $20K
boat and one that runs reliably. I would think that the 3 speeds of a real
transmission would be a big advantage. I also think I can use the power
steering pump and break master-cyllendar for trimming/steering/etc. The best
part is the great performance with dirt-cheep parts. Still it's tempting just
to get the ol mercruiser running - maybe I should put that into the camaro
(haha).
Elliott

Larry wrote:

 > Just shorten the driveline and weld it up to the outdrive coupling!!!
 >
 > Then stomp the gas pedal (make sure you install that also) and away you go!
 > Way cool dude!
 >
 > PS Make sure you go out alone. I would not any innocent folks to die due to
 > your stupidity.
 >
 > (¯`·._.· £ãrrÿ ·._.·´¯)
 >
 > <reitze.DeleteThis@comcast.net> wrote in message news:3F232841.BC91BD7C@comcast.net...
  > > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a good
  > > 267 (v and tranny. The boat is pretty rough and has a 165hp
  > > mercruiser. I'm wondering for the pain in the ass of getting it
  > > running with water under it and so-on maybe I could just put the prop
  > > onto the drive-shaft of the 267 and figure a mount. the only issues I
  > > can think of are the seal arround the shaft, and the ratio. Anyone know
  > > a mercruiser's ratio? How bout the ratio of a 267 V8 to the drive-shaf
  > > for the 80 camaro? I figure the tranny would be really cool for
  > > choosing fast or pulling a skier.
  > > Thanks,
  > > Elliott
  > ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

you could cool the engine by installing a water sump and a keel cooler 1"
copper line looped under and outside the hull.
as far as the rpm you need to watch it because you can over rev the engine
due as others have stated prop de-capitavation.
besure you install a flame arrester on the carb and make the motor box so
that you get plenty of air flow it will help with the heat exchange and to
keep unwanted fumes from building up.
you can install a wet exhaust if you put some form of pressure release on it
otherwise it will suck up water as soon as you kill the engine. otherwise
runn it out the stern and give it hell.
 >> Stay informed about: Engine and Tranny into a boat? 

Simple idea on first impression, but problems abound..... I don't know the
optimal RPM for turning a prop, but if you turn it too fast, no matter how
much torque is turning it, you will get cavitation (pressure on parts of
blades gets low enough that the water basically boils, and since air is not
very effecient on makeing thrust on a water prop you loose efficiency, and
it can cause nasty vibration). Other problem is cooling, most marine
inboards are water cooled, and guess where most of them get that water from?
The lake/ocean. Some do have closed loop collant systems with a radiator,
but imagine drawing lakewater into an automotive engine, then sending that
lakewater to a heat exchanger of some sort for your tranny fluid and oil.
Or you can stick to the closed loop radiator system and then try and find a
way to get good airflow across the radiator, and its attatched fluid cooling
accessories. Personally i would find it easier, safer, and more efficient
to stick to a marine motor on boats, and an automotive motor for cars.
People run into all kinds of problems on even the simple conversion of an
auto engine to homebuilt aircraft, and i can imagine it would be equally
difficult to do it for a boat(if not more so).





<reitze DeleteThis @comcast.net> wrote in message news:3F232841.BC91BD7C@comcast.net...
 > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a good
 > 267 (v and tranny. The boat is pretty rough and has a 165hp
 > mercruiser. I'm wondering for the pain in the ass of getting it
 > running with water under it and so-on maybe I could just put the prop
 > onto the drive-shaft of the 267 and figure a mount. the only issues I
 > can think of are the seal arround the shaft, and the ratio. Anyone know
 > a mercruiser's ratio? How bout the ratio of a 267 V8 to the drive-shaf
 > for the 80 camaro? I figure the tranny would be really cool for
 > choosing fast or pulling a skier.
 > Thanks,
 > Elliott
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

Elliot,

Commercial fishermen did ( and some probably still do) that for
decades, mostly with old heavy 6 cyl. truck engines. It is an
interesting thing to play with. Don't know if a Camero is a good choise
or not. I hear you can build a hell of a boat out of a '51 Chevy
pickup.

The Mercruiser is probably a better bet for normal use.

Ron
 >> Stay informed about: Engine and Tranny into a boat? 

One more comment to add.......The starter and I believe also the alternator
are different than a car engine. They are sealed better so any spark/arcing
of electric will not cause a possible fire or explosion if any gas fumes are
present in the bilge area.
<reitze.RemoveThis@comcast.net> wrote in message news:3F232841.BC91BD7C@comcast.net...
 > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a good
 > 267 (v and tranny. The boat is pretty rough and has a 165hp
 > mercruiser. I'm wondering for the pain in the ass of getting it
 > running with water under it and so-on maybe I could just put the prop
 > onto the drive-shaft of the 267 and figure a mount. the only issues I
 > can think of are the seal arround the shaft, and the ratio. Anyone know
 > a mercruiser's ratio? How bout the ratio of a 267 V8 to the drive-shaf
 > for the 80 camaro? I figure the tranny would be really cool for
 > choosing fast or pulling a skier.
 > Thanks,
 > Elliott
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

what?

#1 - boats don't have radiators. They have water pumps that pull lake water
in, run it through the engine, and back to the lake. If you look at the
foot of a I/O system you'll see vents in the front, that's incoming, and it
discharges through the prop.

#2 - boats don't have transmissions. The closest thing they have to one is
changing out props. You should be able to take off the transmission and
connect the prop to the crankshaft. Besides, if you did that you'd about
have a mid engine boat, which also doesn't happen because it throws the
balance off.

You need to get some help, or you'll be salvaging a boat.

<reitze.TakeThisOut@comcast.net> wrote in message news:3F233757.CA5BA82A@comcast.net...
 > This sounds reasonable... Hoping the outdrive is OK on the new boat.
 > Seems others are fearful of cooling... Well a radiator works on a car in
 > traffic - and I'm sure it would work on a boat too.
 > I was thinking I could mount it behind the boat with an electric fan (like
 > hot-rods use). Once I get the bugs out I may turn this $500 boat into a
$20K
 > boat and one that runs reliably. I would think that the 3 speeds of a
real
 > transmission would be a big advantage. I also think I can use the power
 > steering pump and break master-cyllendar for trimming/steering/etc. The
best
 > part is the great performance with dirt-cheep parts. Still it's tempting
just
 > to get the ol mercruiser running - maybe I should put that into the camaro
 > (haha).
 > Elliott
 >
 > Larry wrote:
 >
  > > Just shorten the driveline and weld it up to the outdrive coupling!!!
  > >
  > > Then stomp the gas pedal (make sure you install that also) and away you
go!
  > > Way cool dude!
  > >
  > > PS Make sure you go out alone. I would not any innocent folks to die due
to
  > > your stupidity.
  > >
  > > (¯`·._.· £ãrrÿ ·._.·´¯)
  > >
  > > <reitze.TakeThisOut@comcast.net> wrote in message
news:3F232841.BC91BD7C@comcast.net...
   > > > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a
good
   > > > 267 (v and tranny. The boat is pretty rough and has a 165hp
   > > > mercruiser. I'm wondering for the pain in the ass of getting it
   > > > running with water under it and so-on maybe I could just put the prop
   > > > onto the drive-shaft of the 267 and figure a mount. the only issues I
   > > > can think of are the seal arround the shaft, and the ratio. Anyone
know
   > > > a mercruiser's ratio? How bout the ratio of a 267 V8 to the
drive-shaf
   > > > for the 80 camaro? I figure the tranny would be really cool for
   > > > choosing fast or pulling a skier.
   > > > Thanks,
   > > > Elliott
   > > >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

#1 Lots of boats have radiators. A keel cooler is a form of radiator and if
you are going to run a radiator be sure to have a keel coller of a sort.

#2 Ok whoever said boats don't have transmissions has lost thier minds.
Yes they are not the type of tranny that you would be used to in a car or
truck. But there is a transmission on most every marine motor. And yes
there even is one on a outboard. They are called lower units. In the case
of what he has he can use the mercruiser outdrive as his tranny.
"ScottH" <nowhere.DeleteThis@noplace.edu> wrote in message
news:bg26b2$3gl$1@slb2.atl.mindspring.net...
 > what?
 >
 > #1 - boats don't have radiators. They have water pumps that pull lake
water
 > in, run it through the engine, and back to the lake. If you look at the
 > foot of a I/O system you'll see vents in the front, that's incoming, and
it
 > discharges through the prop.
 >
 > #2 - boats don't have transmissions. The closest thing they have to one
is
 > changing out props. You should be able to take off the transmission and
 > connect the prop to the crankshaft. Besides, if you did that you'd
about
 > have a mid engine boat, which also doesn't happen because it throws the
 > balance off.
 >
 > You need to get some help, or you'll be salvaging a boat.
 >
 > <reitze.DeleteThis@comcast.net> wrote in message
news:3F233757.CA5BA82A@comcast.net...
  > > This sounds reasonable... Hoping the outdrive is OK on the new boat.
  > > Seems others are fearful of cooling... Well a radiator works on a car in
  > > traffic - and I'm sure it would work on a boat too.
  > > I was thinking I could mount it behind the boat with an electric fan
(like
  > > hot-rods use). Once I get the bugs out I may turn this $500 boat into a
 > $20K
  > > boat and one that runs reliably. I would think that the 3 speeds of a
 > real
  > > transmission would be a big advantage. I also think I can use the power
  > > steering pump and break master-cyllendar for trimming/steering/etc. The
 > best
  > > part is the great performance with dirt-cheep parts. Still it's
tempting
 > just
  > > to get the ol mercruiser running - maybe I should put that into the
camaro
  > > (haha).
  > > Elliott
  > >
  > > Larry wrote:
  > >
   > > > Just shorten the driveline and weld it up to the outdrive coupling!!!
   > > >
   > > > Then stomp the gas pedal (make sure you install that also) and away
you
 > go!
   > > > Way cool dude!
   > > >
   > > > PS Make sure you go out alone. I would not any innocent folks to die
due
 > to
   > > > your stupidity.
   > > >
   > > > (¯`·._.· £ãrrÿ ·._.·´¯)
   > > >
   > > > <reitze.DeleteThis@comcast.net> wrote in message
 > news:3F232841.BC91BD7C@comcast.net...
   > > > > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a
 > good
   > > > > 267 (v and tranny. The boat is pretty rough and has a 165hp
   > > > > mercruiser. I'm wondering for the pain in the ass of getting it
   > > > > running with water under it and so-on maybe I could just put the
prop
   > > > > onto the drive-shaft of the 267 and figure a mount. the only issues
I
   > > > > can think of are the seal arround the shaft, and the ratio. Anyone
 > know
   > > > > a mercruiser's ratio? How bout the ratio of a 267 V8 to the
 > drive-shaf
   > > > > for the 80 camaro? I figure the tranny would be really cool for
   > > > > choosing fast or pulling a skier.
   > > > > Thanks,
   > > > > Elliott
   > > > >
  > >
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

I think you are going to run into all sorts of performance problems.
My Bravo II has a 2.0 ratio on a 22 x 22 prop @ 4000 rpm = 2000 prop
turns. I think if you run a light crankshaft as is in the automotive
engine you will;

A. Never get the prop turns right.
B. Burn out the main bearings due to overload.
C. Have an engine and trans that overheats all the time.
D. Waste a car load of money on the shaft engineering.
E. Probably blow yourself and any passengers to kingdom come, because
auto parts do not meet USCG marine safety requirements.

Please! for your own safety, become conversant with United States Coast
Guard Marine Safety requirements and SAE standards for: Starters,
Carburetors, Flame Arrestors, Alternators, Fuel Pumps and Ignition Systems.





<a style='text-decoration: underline;' href="http://www.uscg.org" target="_blank">http://www.uscg.org</a>

<a style='text-decoration: underline;' href="http://www.uscgaux.org/~0701408/" target="_blank">http://www.uscgaux.org/~0701408/</a>

Capt. Frank

reitze DeleteThis @comcast.net wrote:

 > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a good
 > 267 (v and tranny. The boat is pretty rough and has a 165hp
 > mercruiser. I'm wondering for the pain in the ass of getting it
 > running with water under it and so-on maybe I could just put the prop
 > onto the drive-shaft of the 267 and figure a mount. the only issues I
 > can think of are the seal arround the shaft, and the ratio. Anyone know
 > a mercruiser's ratio? How bout the ratio of a 267 V8 to the drive-shaf
 > for the 80 camaro? I figure the tranny would be really cool for
 > choosing fast or pulling a skier.
 > Thanks,
 > Elliott
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

 >
 >
 >
 >
  >
 > reitze DeleteThis @comcast.net wrote:
 >
  > > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a good
  > > 267 (v and tranny. The boat is pretty rough and has a 165hp
  > > mercruiser. I'm wondering for the pain in the ass of getting it
  > > running with water under it and so-on maybe I could just put the prop
  > > onto the drive-shaft of the 267 and figure a mount. the only issues I
  > > can think of are the seal arround the shaft, and the ratio. Anyone know
  > > a mercruiser's ratio? How bout the ratio of a 267 V8 to the drive-shaf
  > > for the 80 camaro? I figure the tranny would be really cool for
  > > choosing fast or pulling a skier.
  > > Thanks,
  > > Elliott
  > >

I suggest contacting those Cubans that almost made it to the USA
recently in a 53'Chevy truck. Do what they did and it would save lots
of time as you could leave the driveline in the Camaro. Just hook the
prop to the driveshaft the way the Cubans did and strap barrels to the
side. It will be much safer and you will have two boats. The US Coast
Guard had to sink the Cuban vessel and it was not that easy.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

I like that idea!... I could weld barrels onto the axils and put paddles on
them. That way I could just change the wheels and drive on in. On the front I
could either run a chain to spin them from the rear or use them to stear. Now
that I think on it more heck I've alwayse dreamed obout building a car-boater
thing. That is drive up to the water (maybe pulling it on a trailor) put the
boat in the water and drive onto it. strap on and use the car's wheels to drive
a wheel rigged onto a prop. Could use a car-differential in reverse tied to a
prop. That way even reverse would work, And whatever the gearing a
chain-sprocket mechanism could adapt it. hmmm why arent these things for
sale??? Hasent such a thing been done? Just saw the wheel-drive-on cyllendars
used at the motor-vehicle-immisions testing system. Seemed they worked pretty
well.

WasteNotWantNot wrote:

  > >
  > >
  > >
  > >
  > >
  > > reitze RemoveThis @comcast.net wrote:
  > >
   > > > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a good
   > > > 267 (v and tranny. The boat is pretty rough and has a 165hp
   > > > mercruiser. I'm wondering for the pain in the ass of getting it
   > > > running with water under it and so-on maybe I could just put the prop
   > > > onto the drive-shaft of the 267 and figure a mount. the only issues I
   > > > can think of are the seal arround the shaft, and the ratio. Anyone know
   > > > a mercruiser's ratio? How bout the ratio of a 267 V8 to the drive-shaf
   > > > for the 80 camaro? I figure the tranny would be really cool for
   > > > choosing fast or pulling a skier.
   > > > Thanks,
   > > > Elliott
   > > >
 >
 > I suggest contacting those Cubans that almost made it to the USA
 > recently in a 53'Chevy truck. Do what they did and it would save lots
 > of time as you could leave the driveline in the Camaro. Just hook the
 > prop to the driveshaft the way the Cubans did and strap barrels to the
 > side. It will be much safer and you will have two boats. The US Coast
 > Guard had to sink the Cuban vessel and it was not that easy.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

Despite the critics I think it would be semi-cool. Just think of James bond
when they had what looked like a 350 on a little 'asian' canoe-type-thing. I
would review Junkyard Wars episodes for ideas. Or I would put a nice engine
on a 21 and put the camaro engine in a 10' flat bottom and make the ppl at
the watering hole fear your wrath.

"in all seriousness" I always thought an engine and a tranny in a boat would
be cool, but a 21' is a big boat. Get a big bass boat or something that is
cheap/common and make a sleeper.

<reitze.TakeThisOut@comcast.net> wrote in message news:3F85FD8E.C9BEF73E@comcast.net...
 > I like that idea!... I could weld barrels onto the axils and put paddles
on
 > them. That way I could just change the wheels and drive on in. On the
front I
 > could either run a chain to spin them from the rear or use them to stear.
Now
 > that I think on it more heck I've alwayse dreamed obout building a
car-boater
 > thing. That is drive up to the water (maybe pulling it on a trailor) put
the
 > boat in the water and drive onto it. strap on and use the car's wheels to
drive
 > a wheel rigged onto a prop. Could use a car-differential in reverse tied
to a
 > prop. That way even reverse would work, And whatever the gearing a
 > chain-sprocket mechanism could adapt it. hmmm why arent these things for
 > sale??? Hasent such a thing been done? Just saw the wheel-drive-on
cyllendars
 > used at the motor-vehicle-immisions testing system. Seemed they worked
pretty
 > well.
 >
 > WasteNotWantNot wrote:
 >
   > > >
   > > >
   > > >
   > > >
   > > >
   > > > reitze.TakeThisOut@comcast.net wrote:
   > > >
   > > > > Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a
good
   > > > > 267 (v and tranny. The boat is pretty rough and has a 165hp
   > > > > mercruiser. I'm wondering for the pain in the ass of getting it
   > > > > running with water under it and so-on maybe I could just put the
prop
   > > > > onto the drive-shaft of the 267 and figure a mount. the only issues
I
   > > > > can think of are the seal arround the shaft, and the ratio. Anyone
know
   > > > > a mercruiser's ratio? How bout the ratio of a 267 V8 to the
drive-shaf
   > > > > for the 80 camaro? I figure the tranny would be really cool for
   > > > > choosing fast or pulling a skier.
   > > > > Thanks,
   > > > > Elliott
   > > > >
  > >
  > > I suggest contacting those Cubans that almost made it to the USA
  > > recently in a 53'Chevy truck. Do what they did and it would save lots
  > > of time as you could leave the driveline in the Camaro. Just hook the
  > > prop to the driveshaft the way the Cubans did and strap barrels to the
  > > side. It will be much safer and you will have two boats. The US Coast
  > > Guard had to sink the Cuban vessel and it was not that easy.
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat? 

Man! Get a life! You been watching way too much "Junkyard Wars" and
"Monster Garage"!

<reitze.TakeThisOut@comcast.net> wrote in message news:3F85FD8E.C9BEF73E@comcast.net...
 > I like that idea!... I could weld barrels onto the axils and put paddles
on
 > them. That way I could just change the wheels and drive on in. On the
front I
 > could either run a chain to spin them from the rear or use them to stear.
Now
 > that I think on it more heck I've alwayse dreamed obout building a
car-boater
 > thing. That is drive up to the water (maybe pulling it on a trailor) put
the
 > boat in the water and drive onto it. strap on and use the car's wheels to
drive
 > a wheel rigged onto a prop. Could use a car-differential in reverse tied
to a
 > prop. That way even reverse would work, And whatever the gearing a
 > chain-sprocket mechanism could adapt it. hmmm why arent these things for
 > sale??? Hasent such a thing been done? Just saw the wheel-drive-on
cyllendars
 > used at the motor-vehicle-immisions testing system. Seemed they worked
pretty
 > well.
....<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Engine and Tranny into a boat?