Anyone familiar with 71 40 horsepower Johnsons?

[SeaMasterZ@aol.com]

I have a chance to get a 71 40 horse Johnson ... this motor is said to run excellent, fresh water only, sounds great, but ... <br /><br />is 100 and 105 pounds a decent amount of compression for these motors?<br /><br />Also, is this an electric shift engine? My 71 125 is, and I cant stand the thought of having two of these lemons, lol. It looks remarkably like my 66 and 60 40 horse Johnsons, I hope it is somewhat the same internally<br /><br />thanks for any input on this, its a 400 dollar investment, which is a bit for me at this point<br /><br />

 

[bubbakat]

Re: Anyone familiar with 71 40 horsepower Johnsons?

Castway 100 is about right if the engine is cold or dry as they say if there is a difference of at least 15 lbs between cyls. then there could be a problem. to get a true reading the engine should be warm. but if they are reading 100 i would say good to go. You could always decarb and might bring compresson up a little. my book doesn't,t show much difference in those two mtrs though. Keep us posted about results

 

[DJ]

Re: Anyone familiar with 71 40 horsepower Johnsons?

CAR,<br /><br />Those readings are fine.<br /><br />I do not believe the 40 was electric shift. Easy to tell, is there a shift handle on the starboard side of the engine?<br /><br />If so, it's not electric.

 

[SeaMasterZ@aol.com]

Re: Anyone familiar with 71 40 horsepower Johnsons?

thanks for the heads up on the motor, I cant make out if there is a shifter on the engine, I tried to make it out but didnt have a lot of luck ... Ive just been hearing about motors with 145 pounds per cylinder and all of that, so I was a little leery of 100 and 105 ... although they certainly are within 10% of each other!<br /><br />Got a notice that my manuals wont ship til july SEVENTH, damn that amazon, I got suckered by free shipping ... barnes and noble, never a problem, go figure, lol, ah that old saying, you get what you pay for!! <br /><br />I figure Ill get the 71, mate it to the 66 when I get it running, and go with the 10 horse as an auxilliary in the mean time!<br /><br />Thanks again guys<br /><br />

 

[OBJ]

Re: Anyone familiar with 71 40 horsepower Johnsons?

Couldn't find any electric shift in my parts books CR. Straight mechanical shift.

 

[SeaMasterZ@aol.com]

Re: Anyone familiar with 71 40 horsepower Johnsons?

Thanks Jim, I copied the picture and used my enhancement tools to bring up the picture a bit, saw that handle on the side, and was good to go at that point, I think Ill write a book called ah the joys of life, or, the summer I spent on iboats, lol