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That is incorrect look at early 70's Chris Craft Dual engine Big Block applications.
Chris Craft offered dual engine 454's in a 24' to 32' cuddy cabin model boat that had 1 reverse rotation 454, I've heard of a reverse rotation 350 option for these boats also but never seen one.
Rotation direction was not reversed through the gearbox, the engine was a reverse rotation.
I owned a 1974 Chris Craft 28' with this configuration for a few years.
Not to be rude, but read my post again....i said all standard rotation engines are LH and yes u could get RH engines back then !!!!!
PLEASE READ BEFORE U POST AWAY !!

---------- Post added at 08:21 PM ---------- Previous post was at 08:18 PM ----------

The port engine turns clockwise,the starboard engine turns counterclockwise.A single engine turns clockwise.A boat motor is high torque.It would have to be recammed and/or changed as to rotation.They will not interchange without work.Now who knows why it is called portside,and why.
a single engine turns counterclockwise from the back of the motor ..thats where all the confusing starts !!! ITS A STANDARD ROTATION !!!!!!! just like your car !!!!
The rotation is always specified from the back of the engine looking at the bellhousing !!!!!!!
U are absolutley wrong on all counts !!!!!!!!
---------- Post added at 08:22 PM ---------- Previous post was at 08:21 PM ----------
 

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In turbodiesel engines the primary difference in horsepower ratings from land to water is that you have an unlimited heat sink with a boat. Regardless if the engine uses sea water or a closed loop system. The components are typically the same except for a few key components, the exhaust headers, the turbo, and most importantly the water to air cooler for the forced induction system. The exhaust components are water jacketed for safety purposes to help avoid fires, this feature, as expected, reduces horsepower. The jacket coolers remove energy that would normally go to the turbo and release it wastefully to the lake/ocean/bathtub what have you. The internal temperatures are the same as component materials limit of combustion chamber temperatures. The major difference is that an unlimited water supply to the inter-cooler can drastically reduce the charge temperature compared to an air to air inter-cooler on a road vehicle.
Typically in multiple engine configurations they rotate opposite each other. In single engine typically standard rotation, because many components are the same as land engines, therefore cheaper to manufacture.

As far as naturally aspirated, I could speculate on why gas boat engines have higher horsepower ratings than land engines. Considering boats relative weight, completely different load demands and cycles compared to vehicles, and that horsepower is time function of torque, well I could guess anything, but I have limited experience in that department and will digress.

i'm just as curious as many these other guys to see the end results!
 

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in todays world, all the engines rotate the same ( standard ) becasue in todays market its the outdrives that switch rotation !!!!
Since i am racing boats and working on them aswell as my truck and see a lot of cars..its the same engines with some inside changes..ofcoasre the exhaust and other rigging parts are diferent and have to be changed, but nothing on the inside of a boat engine has to be changed to work in a car !!!!
 

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Discussion Starter #24
In turbodiesel engines the primary difference in horsepower ratings from land to water is that you have an unlimited heat sink with a boat. Regardless if the engine uses sea water or a closed loop system. The components are typically the same except for a few key components, the exhaust headers, the turbo, and most importantly the water to air cooler for the forced induction system. The exhaust components are water jacketed for safety purposes to help avoid fires, this feature, as expected, reduces horsepower. The jacket coolers remove energy that would normally go to the turbo and release it wastefully to the lake/ocean/bathtub what have you. The internal temperatures are the same as component materials limit of combustion chamber temperatures. The major difference is that an unlimited water supply to the inter-cooler can drastically reduce the charge temperature compared to an air to air inter-cooler on a road vehicle.
Typically in multiple engine configurations they rotate opposite each other. In single engine typically standard rotation, because many components are the same as land engines, therefore cheaper to manufacture.

As far as naturally aspirated, I could speculate on why gas boat engines have higher horsepower ratings than land engines. Considering boats relative weight, completely different load demands and cycles compared to vehicles, and that horsepower is time function of torque, well I could guess anything, but I have limited experience in that department and will digress.

i'm just as curious as many these other guys to see the end results!
yeah I was just looking at the cummins/mercury setup that they are doing together! I was suprised when I saw those big 5.9's only pushing 300-400 horse to power those giant boats. After what you said now though it definitely makes sense. I always love a good diesel engine but on this project i'm gonna try gasoline power.
 

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Alright I,m outtahere but,daredevil needs to raise the hood on his truck.Thanks I enjoy the forum,to old to argue.
 

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Just a update...some of u may missunderstood me in my posts...my english is not perfect ..sorry

YES REVERSE ROTATION ENGINES EXIST !!!!!!!!! but are not used anymore in newer boats of today since the drives switch the rotations...

maybe this clears some of the confusion up, but still ...a standard rotation engine ...boat/or not...is LH ( again , by looking from the bellhousing side at it ..not from the balancer )

THANKS and sorry
 

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Boat motors have reverse rotation so it won't work. If you buy a camshaft for a boat motor it is differant then a car/truck motor.
most of the time it's twin engine boats that will have 1 engine running in reverse so the screws turn in opposite directions. helps with turning. the reverse engine is only a matter of a cam swap
 

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most of the time it's twin engine boats that will have 1 engine running in reverse so the screws turn in opposite directions. helps with turning. the reverse engine is only a matter of a cam swap
READ MY POSTS, the drives are the things with the props on them and they counter rotate, NOT THE ENGINES ( only in some real old boats they do !)

BTW, its a lot more then just the cam !
 

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i dont know if any of you guys ever put a boat engine in a car.w i did my 66 chevele had a 350 370 z /28 engine in it i blew that up at 8 grang kaboom .still needed the car for work my freind had a 283 from a boat lying around said use so i did y car had 488 gears in it so away we wnt .this thing as a goof to drive it wouls melt the tires in 1st 2nd and most of 3rd.did 0 to 60 in like 4 seconds but it topped out at about 65 mph only did maybe 3800 rpm max .but what a ride .we looked up the specs on the cam it was fron idle to 3500 all power .i would be ripping whole shots all over the neighborhood.the guys on the other corners thought i had a freaking dragster motor . little did they know i was topped out at the end of the steet.AH GOOD TIMES

---------- Post added at 02:11 PM ---------- Previous post was at 02:09 PM ----------

forgive my spelling i cant typy was laying in my bed when i typed it
 

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READ MY POSTS, the drives are the things with the props on them and they counter rotate, NOT THE ENGINES ( only in some real old boats they do !)

BTW, its a lot more then just the cam !
Right, you also have to have a different starter motor to get the counter rotating engine started the correct direction. Different water pump impellor since it's running rev rotation, even the alternator so that the cooling fan is cooling the alternator rather than expelling the air.. etc, etc lol Glad we don't see many of these anymore. They're kind of a PITA putting an old portside engine into a car/truck..

**Interesting story about the 283 marine engine into your car Bronx Boy. Had me laughing about the neighborhood burnouts :)
 

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They definitly can do it! My dad's friend still has his old car from high school and i am almost certain it had a mercury engine in it. It would be an awsome project!
 

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Now who knows why it is called portside,and why.

This is one that I do know. It was because in old time boats (I'm talking real old here) the rudder was actually placed on the left side of the boat or ship, hence the term starboard or steerboard instead of in the middle of the boat so the boat had to come to the pier on the right side so they called that the port side.

As far as putting a boat motor in a car I am sure that it is totally possible as we have two jet boats that our family has re-engined with straight swap 454 chevy engines. Maybe the jet drive makes a difference but it certainly didn't matter as far as the engines that we put in them.
 

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Now who knows why it is called portside,and why.

This is one that I do know. It was because in old time boats (I'm talking real old here) the rudder was actually placed on the left side of the boat or ship, hence the term starboard or steerboard instead of in the middle of the boat so the boat had to come to the pier on the right side so they called that the port side.
What? Didn't you mean to say that the rudder was placed on the "right" side of the boat?
Rudder = steerboard = starboard = the right side of the boat when facing foreward.. Hence starboard is the right side of the boat & port side is the left side "when facing foreward" in the boat... That's the way it is on the West Pacific Coast anyway & most other places in the U.S.
 

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Nikakiye spammery ne pozvolili Vam komok der'ma
Никакие спаммеры не позволили Вам комок дерьма

(Stop spamming this site you sh*t wad.)





** That's the 4th or 5th Russian spammer on GMTC in a week. Why don't they leave us alone & get back to drinking their freakin vodka & beating their wives? :rofl:
 

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Got him, how dare he interrupt when we were talking nautical stuff.
Thanks for deleting his post Tim!! I suppose we wouldn't mind so much if they were selling Russian boating supplies, but according to the script that was describing the links, those were Ruskie porn sites that they were hawking on here.
 

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Thanks for deleting his post Tim!! I suppose we wouldn't mind so much if they were selling Russian boating supplies, but according to the script that was describing the links, those were Ruskie porn sites that they were hawking on here.
Were they on a boat doing porn?
 

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Too funny Jimmeh !! :) I don't know cuz I didn't click on the links, but that was what the text said they were.
 

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i've got a few buddies that work at a boat shop and they've put marine engines outta boats in their cars/trucks. my friend runs a marine boat chevy 350 in his mud truck and it works just fine.
 

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What? Didn't you mean to say that the rudder was placed on the "right" side of the boat?
Rudder = steerboard = starboard = the right side of the boat when facing foreward.. Hence starboard is the right side of the boat & port side is the left side "when facing foreward" in the boat... That's the way it is on the West Pacific Coast anyway & most other places in the U.S.
THATS THE WAY IT IS IN THE WORLD !!!!! EVERYWHERE ! lol
 
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