out board wont reach max rpm

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: out board wont reach max rpm

I would suggest to go slowly, but get the anti-ventilation plate at least even with the keel if not a little higher.
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,392
Re: out board wont reach max rpm

ok guys, I have an update. I went ahead and replaced the spark plug on the bottom cylinder. I also did a comp test for good measure. Compression in at 155 psi. So I figured ok let see if it will fire up. Sure did, idles smooth, even runs on that cylinder alone when it would not before. So I think I got the problem licked. I wont know for sure till I can get back out on the water. Also a few of you mentioned moving to motor up on the transom. Do you think I should start with an inch or just move it up a full two right off the bat? Again thank you for all help. I dont know how much more I could have take.

Depends where the anti cav plate is at present. If it is in line with the bottom of the hull then go inch by inch. If it is below it then bring it up to it and then an inch or so.
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,392
Re: out board wont reach max rpm

Good Luck and let us all know how you go on.
 

jsiedentopf

Cadet
Joined
Jul 29, 2007
Messages
16
Re: out board wont reach max rpm

Well, I got out this morning for a little test. It was near perfect. The motor still loads up when it idles, so I might need to adjust the idle needle a bit. But other than that I was able to get up to 26 mph according to my TOMTOM GPS. I may try moving the motor up an inch or so. though in hard turns the prop is ventilating already. Thanks again for all your help. Here is quick video.

 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: out board wont reach max rpm

Sounds great and looks like a success. Congratulations.
 

jsiedentopf

Cadet
Joined
Jul 29, 2007
Messages
16
Re: out board wont reach max rpm

thanks, now that I know it is worth keeping I will start to fix up the interior. New indoor outdoor carpet. mabye some better seats.
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,392
Re: out board wont reach max rpm

Looks like great results.
Glad all turned out for you.
 
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