Will the engine block from the 77 engine fit on the 78 lower unit?
H hondapapa Seaman Apprentice Joined Mar 18, 2013 Messages 38 Mar 30, 2014 #1 Will the engine block from the 77 engine fit on the 78 lower unit? Last edited: Mar 30, 2014
B boobie Supreme Mariner Joined Nov 5, 2009 Messages 20,826 Mar 30, 2014 #2 Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp It may fit but the shift linkage is all different as the lower units are different. They do use the same power head gaskets though.
Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp It may fit but the shift linkage is all different as the lower units are different. They do use the same power head gaskets though.
E emdsapmgr Supreme Mariner Joined Dec 9, 2005 Messages 11,551 Mar 30, 2014 #3 Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp Is there a problem with the 1977 midsection? It's the only crossflow V4 with an exhaust tuner (megaphone) in the midsection. I'd be trying to figure out how to use it. Last edited: Mar 30, 2014
Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp Is there a problem with the 1977 midsection? It's the only crossflow V4 with an exhaust tuner (megaphone) in the midsection. I'd be trying to figure out how to use it.
H hondapapa Seaman Apprentice Joined Mar 18, 2013 Messages 38 Mar 30, 2014 #4 Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp midsection is good,foot is bad. why do I need to use midsection?
Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp midsection is good,foot is bad. why do I need to use midsection?
H hondapapa Seaman Apprentice Joined Mar 18, 2013 Messages 38 Mar 30, 2014 #5 Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp Ok block from 77 fits on78 lower. Not sure about linage yet.
Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp Ok block from 77 fits on78 lower. Not sure about linage yet.
E emdsapmgr Supreme Mariner Joined Dec 9, 2005 Messages 11,551 Mar 31, 2014 #6 Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp The 77 midsection has got a high performance exhaust tuner that none of the other V4's have.
Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp The 77 midsection has got a high performance exhaust tuner that none of the other V4's have.
B boobie Supreme Mariner Joined Nov 5, 2009 Messages 20,826 Mar 31, 2014 #7 Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp Better take a real CLOSE look at that linkage !
Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp Better take a real CLOSE look at that linkage !
H hondapapa Seaman Apprentice Joined Mar 18, 2013 Messages 38 Apr 1, 2014 #8 Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp Ok what if I use 78 intake with original linkage on 77 block? Thanks for the help.
Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp Ok what if I use 78 intake with original linkage on 77 block? Thanks for the help.
B boobie Supreme Mariner Joined Nov 5, 2009 Messages 20,826 Apr 1, 2014 #9 Re: Motor swap johnson 1977 140hp to a 78 johnson 140hp I've heard of that being done before.
