I need help Getting On Plane Please!!

[smokeonthewater]

Re: I need help Getting On Plane Please!!

when I say "tweak the carb" I'm referring to tuning it by reading the plugs to get every last ounce of power out of it.... This is something that requires some skill and experience as getting too lean could shorten and possibly greatly shorten the life of your engine.... too rich is not quite as much of a problem as it will noticably reduce power and is not likely to do any real damage other than fouling plugs... just a touch too lean though can melt a piston...

It also may be possible to get a lerger carb on there but without first hand knowledge of your engine I can't guarantee that the you would gain power by doing so

 

[bigpikeguy]

Re: I need help Getting On Plane Please!!

I see what you mean but i think you think that i have a 2-stroke. My motor happens to be a 4-stroke. I have alot of experience with snowmobiles so i would be able to work on a 2-stroke outboard but since mine is a 4-stroke im left out in the fog lol.

 

[smokeonthewater]

Re: I need help Getting On Plane Please!!

AHHH I see I DID think you had a 2smoke.... 4 stroke is a whole new animal and is not quite so easy or cheap to drag power out of.... raising compression is probably the cheapest route although you will nneed higher octane gas.... timing can be another route... and still mixture but chances are there isn't alot of room to wiggle on jetting alone... air in and exhaust out are still power makers but I don't have any first hand exp with a 4 stroke outboard so I have no idea what is avail as far as hi perf parts.... on atv's it's a cam, big bore hi compression piston, exhaust, intake, carb, and ign box and away we go... There could be some stuff out there but no clue where, how much, or if it's worth it to ya.

there's still the non hp related things to work on too.... If you look at every inch of that boat you might be surprised how much weight you could remove.. example...While the manufacturer needed a completely rigid surface so as not to have folks avoid their "cheap" boat maybe you can tolerate the floor flexing under your feet and could replace 3/4" plywood casting decks and floors with 1/2" or maybe even 1/4" with a 1/8" layer of glass.... remove trim panels... maybe an extra livewell... Maybe where fiberglass was rough cut behind a panel there might be room to cut more... now it is VERY important to understand what you are cutting as this would definately not be covered under warranty if you ruin your new boat...

 

[Boatist]

Re: I need help Getting On Plane Please!!

Power and weight is everything. Reduce as much weight as you can.
Move you motor tilt pin both ways and see if it helps.
unclamp your motor and putt a 3/4 inch board on top of the transom. Put the motor back on and try it. This will reduce motor drag some.
again move your motor tilt pin and see if it is any better.
You can also try a 1 1/2 inch board on top of the transom but make sure your motor is still good and solid on the transom.
If this helps then your should build a stronger transom to make that board a solid part of the transom.

I had the same problem back with my 14 foot aluminum boat with a 15 hp motor and raising the motor help a lot.

I not sure smart tabs will help as it does lift the stern but also adds drag.
I know a few people who solved the problem by changing a 25 hp motor to a 35 Hp but got cover for a 25 hp. In one case the guy just got the 25 hp stick on label to cover the 35 hp label. Of course the motor serial number tag is still going to point to a 35 hp motor. All I can say is the guys that did it out here got away with it.

 

[bigpikeguy]

Re: I need help Getting On Plane Please!!

Yeah a 4-stroke is totaly different lol. I finnishe my batterie move last night and im gonna test it out tomorrow. Im gonna do one thing at a time so i can see what each modification will do. The next thing i am gonna try is to move my tilt pin back 1 hole and push my motor under the baot a little and see if that will push the stern out of the water. Thats simple and i can do that right at the lake. My next mod is to take the intake off of my motor and polish it to make it real nice and smooth. I know one some of my other toys that made a noticeable difference. I kinda already been going over my baot and looking for weight that i can get rid of. I found some stuff that i can get rid of, now i just got to get the saw out lol.

As for performance parts, i cant find anyone that sells anything for lower HP outboards. I dont know if u guys got any leads but i ran dry. Yamaha makes alot of stuff and im not sure if anything from there bikes would work on an outboard or not. Not something i really wanna mess with unless i know its gonna work. Dont need to blow my motor, aint getting on plane for sure then lol. I dont think polishing the intake will do any harm so i aint worried about that.

 

[Home Cookin']

Re: I need help Getting On Plane Please!!

it didn't occur to me that you weren't trying different trim angles. do that first.

 

[smokeonthewater]

Re: I need help Getting On Plane Please!!

well as far as bike stuff... the ign stuff will be all wrong.... advance curve will not be right.. many outboards have mechanical advance cams though sos you might be able to adjust... just be real carefull to avoid pre ignition... as I said b4 ..thin head gasket and again trim.... tilt that engina ALL the way down... try raising one notch at a time until you lose preformance then go back... I would have done that before moving the batteries.... moving weight forward might actually hurt you if it causes you to have to tilt the engine higher to compensate.... imagine batts pushing bow down and engine pushing stern down to try to raise bow...... now that you have moved them don't move them back until you try it out though... they MAY be perfect up there....

 

[coastalcruiser]

Re: I need help Getting On Plane Please!!

reduce weight or just try going alone and see if that helps
get 2-20 hp engines
another trick is to use a 9.9 'trolling motor" as well as the 20 dont laugh ive seen it
all the guides at a salmon lodge i stayed at do it and they rip!
also make sure your motor is running good it may just be that its got a problem with the throttle opening up or you have some old gas not you....the engine

 

[bigpikeguy]

Re: I need help Getting On Plane Please!!

I dont think moving the batterie was a bad thing due to the fact that if i have a person sit on the fron deck the boat will go a little faster but the stern still wont get our of the water. So i think getting that extra weight out of the back and moving it to the front will help. Who knows though i could be dead wrong, hopefully not. Plus i only moved my trolling batterie. My cranking batterie and fuel tank are still back there. 90% of my weight was in the rear of the boat and i really think that is whats killing me.

My motor does not have power trim, just tilt so it wont trim up under power. But i have been moving it back and forth up to the pin and with it resting right on the pin seems to be my best position so far. right now my cavitation plate is level with the undeside of my boat. i figured if i would push it in further it would hurt my performance but lift the stern out of the water. I guess the only way to find out is to move the pin back one more hole. BTW when i do go alone in my boat i have no problem planeing at all its just bringin that extra guy/gal along thats givin me all the trouble.

2 20hp's that would be freaking sweet but im not sure if thats legal in PA lol. There is nothing wrong with my motor it runs like a top, im just dealing with an under powered boat here. darn 20hp limmit in PA is killing me lol.

 

[smokeonthewater]

Re: I need help Getting On Plane Please!!

doesn't the engine have a pull start? if so ditch the starting battery... if not get a small starting battery for a pwc.... you don't need a car battery to crank a 20.... I doubt that moving the batts is a bad thing either BUT keep everything loose in the boat so you can move it around on the water.... are you by chance trolling with 2 batteries? do you actually NEED 2? Is it a 24 volt motor? if so consider a switch to 12 volt...... Three big batteries add up to almost another person...... Or if you have just one could you get by with a smaller battery?..... I didn't expect that you would have power trim... you have manual trim... the pin.... put it in the lowest hole and go from there.... also as mentioned before space that engine up a little to get less of it in the water...

Yes trimming down would hurt your performance on the top end but then your boat never sees top end..... So you are looking to maximize hole shot because that's all ya got..... I wouldn't cry too much about 20 hp.... most states have restricted lakes set at electric only or under 10 hp

 

[bigpikeguy]

Re: I need help Getting On Plane Please!!

Ok i went out on friday with the deep cycle in its new position up front. I took a little rip by myself and the boat jumps right up on plane no problem now. alot faster than before. One thing i niticed though is my motor no longer over revs. I thought that was weird and can really figure that one out. it will hold steady at 5,800 or 5,900 rpms, which is perfect.

Now with 2 guys in it i noticed that the boat does level out alot nicer and i can see out the front of my boat . It runs at about 5,400rpm But iT still will not get onto plane. I do go a little bit faster so not all is lost. I think what it boils down to is i simply need a little more smoke out of my motor. So im gonna pull the intake off of it and get it polished. Next time im out im gonna play with the trim angle and move my pin back further and see what that will do for me.

BTW my motor does not have a pull start on it And yes i only have 2 batteries in the boat. A trolling batterie and a starting batterie. The starting baterie runs everyhting in the boat except my 12V trolling motor.

 

[smokeonthewater]

Re: I need help Getting On Plane Please!!

I can't believe you still haven't adjusted trim.... This only takes a few seconds to do even on the water and is the first thing you should be trying.....

as for more smoke contact cometic gaskets and see if they will make you a thinner head gasket... Don't for get to check valve clearance though.... is that an ohv engine or a flathead?

 

[bigpikeguy]

Re: I need help Getting On Plane Please!!

Yeah yeah i know i should have done it on the water but i just wanted to do some fishing. Plus i did not have a wrench on my that would fit the bolt to move it. its not actualy a pin the goes the whole way accross, there are 2 posts, one on each side. I would have been afriad to do it on the water in fear of droping on in the lake. dont worry they will be moved when i go out this weekend for sure.

My motor is an OHV so im not sure about the whole gasket thing. If you think i could get away with it i would do it for sure. How much diff do u think it would make? i know for a fact on a 2 stroke it makes a nice diff. With the valves on the 4-stroke that makes me nervous. Im not 2 inclined on this new fancy stuff.

 

[smokeonthewater]

Re: I need help Getting On Plane Please!!

well ohv makes for alot more work but you can put a little modeling clay on the pistons and put it all together with no head gasket.... then turn it over (by HAND!) and take it back apart... that would give you the clearance... then a decision could be made on head milling and/or thinner gasket.... I don't know what to tell you on needed clearance though... an experienced engine builder could help there... depends on rpm valve timing/ opening speed and materials used.... then there's fly cutting pistons for valve clearance, regrinding cams porting heads.... this can get as complicated as you want it too... ooooooooo how bout a turbo