1994 Evinrude 120 V4 RPM?

[RangerBob]

Well, after a lean condition rendered my 1995 Johnson 130hp a giant hulk of a space wasting parts motor, I bought a rebuilt Evinrude 120. It is almost identical. That is except for the RPM's at WOT. With the 130 I was running around 5,000 rpm and I am lucky to get 4,100 rpm out of my new motor. Is there something I should know or is there an adjustment that I am missing?
Thanks

 

[lindsey]

Re: 1994 Evinrude 120 V4 RPM?

Are you running the same prop from the 130hp if not that could be the problem.

 

[Faztbullet]

Re: 1994 Evinrude 120 V4 RPM?

Several thing could cause this:

1) linkage not allowing full WOT
2) timing retarded
3) improper jetting
4) older model (small bore) powerhead

 

[kenmyfam]

Re: 1994 Evinrude 120 V4 RPM?

More input on each motor would be a good start.

 

[RangerBob]

Re: 1994 Evinrude 120 V4 RPM?

I am running a 19 pitch prop on the 120.

 

[kenmyfam]

Re: 1994 Evinrude 120 V4 RPM?

I am running a 19 pitch prop on the 120.

And what were you running on the other one ???
Shaft length the same ???
Motor height the same ???