That's not *entirely* accurate- they do help quite a bit on Yamaha 115 4-strokers. I experienced it myself. You lose about 200 - 300 RPM, but the hole shot is significantly better, especially with a load and I was able to stay on plane at lower RPMS. I did have to switch it out for the 3-blade aluminum when I travelled to the high lakes as the motor at those altitudes couldn't overcome the weight of the SS impeller and it was a dog.Webo said:I wouldn't get one BigKat. They don't help performance at all on outboards less than 150 hp and could even hurt a bit... especially on a 4 stroke.
No worries it's easy to do yourself. Longer life of the impeller doesn't mean a longer life of the sleeve. I'll see if I can find the link to how to do it yourself. There's been one here a few times maybe someone can beat me to the punch. I gotta get some stuff ready for the morning.... It's easy Brotha! Tup:bigkat said:I went to the river jet web site. They also said performance was enhanced for motors 100hp or more and under 100hp the benefit is longer impellar life (which is what I'm looking for).
I am a bit aprehensive about sharpening and shimming myself. Is it possible for me to totally f-up the job? Anyone have bad first time experiences?
My impellar edges are getting dull and dinged. I haven't lost noticable performance yet but I think the job should be done soon.
Do you need to remove the impellar or just the shoe?
Thanks for all the help by the way.
OK back to my original question. Who makes 4 blade SS impellars ?KingFisher85 said:I had a stainless impeller in my 90/65 2 stroke jet...
Both impellers had good sharp blades, and tight gaps...But that stainless had a way better/quicker hole shot for me and seemed to get me a little more speed.
I have a 4 blade stainless now on my big ol 200hp...vroom vrrrooom fast :mrgreen: