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Marine 318's #1560550 01/07/14 08:07 PM 01/07/14 08:07 PM
Joined: Jan 2007 Posts: 685 pennsylvania poboyengineering OP mopar
poboyengineering OP mopar Joined: Jan 2007 Posts: 685 pennsylvania	I just got back from Florida, and my father has a spare 318 out of his shrimp boat. what are the differences in these vs. the car/truck engines? he seems to think they got steel cranks, heavy duty rods, select blocks etc, but he really isn't sure, and ive never been into boats(my favorite ones are the ones that don't sink!). anybody know? It may be ugly, but it sure is slow. Girls comb their hair in rear view mirrors and the boys try to look so hard....

Re: Marine 318's [Re: poboyengineering] #1560551 01/07/14 08:14 PM 01/07/14 08:14 PM
Joined: Feb 2003 Posts: 16,150 Mesa, Arizona D dart4forte I Live Here
dart4forte I Live Here D Joined: Feb 2003 Posts: 16,150 Mesa, Arizona	I would imagine they are similar to the 273 marine engine. I have a 4 barrel intake for a 273 marine. Intake is a little different than the street manifold.

Re: Marine 318's [Re: dart4forte] #1560552 01/07/14 08:59 PM 01/07/14 08:59 PM
Joined: Aug 2003 Posts: 751 St.Clair Shores, Mich bryansgarage super stock
bryansgarage super stock Joined: Aug 2003 Posts: 751 St.Clair Shores, Mich	More nickle content (to avoid rust)in the block. Cam and heads suck for street. Watch for left hand rotation motors too.My son's Conqueror 318 jet, needs a marine cam. My 88 Ramcharger engine is in it and it doesn't like the cam.

Re: Marine 318's [Re: bryansgarage] #1560553 01/07/14 09:09 PM 01/07/14 09:09 PM
Joined: Sep 2009 Posts: 1,805 ky hills thehemikid top fuel
thehemikid top fuel Joined: Sep 2009 Posts: 1,805 ky hills	Might be a brass or plastic impeller water pump, but no biggy.

Re: Marine 318's [Re: thehemikid] #1560554 01/07/14 09:56 PM 01/07/14 09:56 PM
Joined: Jan 2003 Posts: 43,577 Round Lake Beach, Illinoisy Rhinodart Rhinotruck
Rhinodart Rhinotruck Joined: Jan 2003 Posts: 43,577 Round Lake Beach, Illinoisy	Some were reverse rotation. I had a 340 out of a boat and it had a VIN for a 70 Swinger on it, so it had been replaced at some point. The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it. JB Rhinehart, Realist A-Body's RULE!

Re: Marine 318's [Re: thehemikid] #1560555 01/07/14 10:03 PM 01/07/14 10:03 PM
Joined: Feb 2003 Posts: 8,020 Pangaea B5 Bee master
B5 Bee master Joined: Feb 2003 Posts: 8,020 Pangaea	Quote: Might be a brass or plastic impeller water pump, but no biggy. If it's straight inboard. then neither brass nor plastic. Raw water system has 1 pump that uses a separate, or external, pump that pumped water thru the motor. The standard pump is eliminated. This is the most common system. Closed system uses 2 pumps, a standard automotive pump that pumps water to a cooler which which is cooled by a raw water pump. This system keeps salt water out of the motor and allows for antifreeze just like automotive, no need for special impellers. I/O I don't know about.

Re: Marine 318's [Re: poboyengineering] #1560556 01/08/14 02:58 AM 01/08/14 02:58 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	I worked on one, 318 in a speed boat, reverse rotation/weird firing order. EDIT Same order (sequence) but it did not start with (1) Last edited by RapidRobert; 01/08/14 01:37 PM. live every 24 hour block of time like it's your last day on earth

Re: Marine 318's [Re: RapidRobert] #1560557 01/08/14 03:17 AM 01/08/14 03:17 AM
Joined: Sep 2005 Posts: 1,328 St. Louis, MO mopardamo pro stock
mopardamo pro stock Joined: Sep 2005 Posts: 1,328 St. Louis, MO	Reverse rotation engine can be really fast in reverse. Can the driver?

Re: Marine 318's [Re: mopardamo] #1560558 01/11/14 11:48 AM 01/11/14 11:48 AM
Joined: Jan 2007 Posts: 1,444 NEW JERSEY D dynamite pro stock
dynamite pro stock D Joined: Jan 2007 Posts: 1,444 NEW JERSEY	Reverse rotation firing order is 12756348

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