Fish nautique rpm questions

So I’m back haha dumb questions incoming put on your helmets…

I have a 14x11 iirc prop boat hops up out of the hole doesn’t seem to struggle even with a load but seems like wide open only 23-2500rpm showing on the tach. (Could my tach be broken?)

To me seems like that’s low,

Whats a pcm 351 suppose to turn wot

How do I check I’m getting full wot on the carb??

I was cruisings around 23-25mph at 2000ish rpm until we decided to try and wot to see what we could top out at and only got it to 30mph and engine sounded like it was revving higher than tach was showing but what do I know.

I can’t open engine box while running at speed since it’s inside the cabin and it can’t be removed without taking the whole back wall off the boat wish I remembered how to post pictures on this site

That SBF should be able to cruise at 3,800 to 4,000 RPMs all day long.  I agree that a timing light with a tachometer is a great tool. 

I was looking over videos to check and I found one where we are going 24 gps speed with tach showing 2k rpm

Punching that into a prop calculator shows a boat going 24mph with a 1:1 ratio at 2k rpm with 10% slip pitch would be 14x14.

Soooo my rpm have to be off or this props been worked :shrug:

Haha I actually didn’t remember posting about it before with all the issues I had with the trans n stuff

I didnt order one since I don’t know how to mess with any of that stuff engine hatch can’t be raised while running and it’s heavy a cable would get cut off I’d bet

In our younger days we just used empty beer cans for the engine hatch prop.  We were just ahead of our time and didn't know you could have a boat with heat for those cold days.   Who woulda thunk?

It’s not a ski boat so propping The engine box open doesn’t really work if you wish to operate the boat the box is at the helm and if you prop it open you now will have to stand outside at the rail of the boat to operate the controls along with if the box slides back since it isn’t hooked on to anything it will take off the carb and flame arrestor since we aren’t in a flat calm lake out here in the ocean…

Mind blown…

Lol

So......you're trying to say that you can't prop this thing up about 1/4 of an inch so that the timing light cable going to your choice of spark plugs can be used to check your RPM's while you're driving without squishing that cable? 

Get some 12 volt wire and 4 aligator clips, the length you will have to determine.
The wire will let you close the hatch and be long enough to set the multimeter on the dash.

Per the book that came with my multi meter or i wouldn't know how to do it.
Hook the red wire to the neg side of the coil.
Hook the black wire to the block/ground.
Connect your multimeter set to rpm and go for a boat ride.

Now the above is helpful (with a meter that has a frequency function) but it's kinda sorta pretty much impossible to check your timing with a multimeter 

My bad, i thought this was an rpm thread;
i read 14x11 pops outta the whole but tach only goes 2500. To me, Propped right, tachs off !
Didn't know about the timing issue.

Yes posting pictures is very easy they are worth a thousand words when it comes to articulating step by step instructions and for getting help/answers especially when the recipient may not be mechanically or electrically inclined but a genious down other avenues.

(my neighbor works on electrical doo hickeys for the space program) so smart and yet would rebuild the mother board in the mr coffee before thinking to see if it was plugged in.

Didn't know there was a timing light with a tach on it to solve/verify your issues either but if keno's got your troubleshooting figured out then your getting advice from the top of the food chain.

Hard to believe there isn't a way to hook it up close the hatch and read it even if someone has to go down there and read it, like my dad says " that's why we had you boys"