What is the purpose of these Johnson Motors?

[NathanY]

28hp, 48hp, and the 88hp? Why not round the numbers up? Why the off the wall numbers?

 

[Walker]

Re: What is the purpose of these Johnson Motors?

I think it is just an easy way to designate those classes of motor that don't have any extra's like T&T

 

[Dhadley]

Re: What is the purpose of these Johnson Motors?

Dont forget the 112.<br /><br />It started out as a marketing deal. Less frills = less money. No oil injection, pt/t was an option no/less stainless etc.<br /><br />Basically the same as the "rounded up" hp's.<br /><br />Good luck!

 

[Jack Shellac]

Re: What is the purpose of these Johnson Motors?

I believe that this designation was primarily to clearly mark them as pre-mix motors, so they wouldn't be burned up from lack of oil by someone who wasn't familiar with the motor. They were promoted as a "commercial" motor by OMC.

 

[Boatist]

Re: What is the purpose of these Johnson Motors?

Nathan<br />I belive all the motor you gave do not have thru hub exhaust and were sold commerical work motors, used to push a small barge or work boat.

 

[stauter99]

Re: What is the purpose of these Johnson Motors?

They do have thru hub exhaust, my neighbor has any 88. These were the spl (special) models. I am not sure hy they have the 8s.

 

[Steve135]

Re: What is the purpose of these Johnson Motors?

I have always heard they were overbores from smaller sizes motors done right at the factory They always have castings that need to be bored bigger in every production run. EG: 25 = 28 80 = 88 so on. I remember reading this either on a Johnson/Evinrude site or a listing for parts that said this.It was a remark that said these SPL can never be rebored, do to the fact the are factory bores.<br />steve

 

[ledgefinder]

Re: What is the purpose of these Johnson Motors?

^<br /><br />I have a '96 112SPL I was planning to bore, curious whether this is true about the SPLs being factory overbores.

 

[Dhadley]

Re: What is the purpose of these Johnson Motors?

Definately not!!!! They are standard and can go over as far as they make pistons for. For example the 88 and 112 can go to .064 over for Wiseco.<br /><br />Good luck!

 

[ledgefinder]

Re: What is the purpose of these Johnson Motors?

Thanks. I realize I could always invest in a bore gauge (should).

 

[DJ]

Re: What is the purpose of these Johnson Motors?

The SPL's were identical to their even hp. brethren except they did not have trim and tilt (some) and oil injection. The also recieved a different paint and decal treatment.