Proformance isn't what i think it should be????? 9.9

[rocket rich]

After going thru the break in period, with great care My 2014 9.8 Tohatsu is not the motor I thought it would be. It doesn't have the speed that it should have and can't always run the same?? I've done all the things in the book as for as transom height , level the motor , etc. Why doesn't it proform good?? I thought that after the break in , the motor would start to get better. What's Better Mean, No Idea??? It does have good points but not many..... Any one got any hints I'm open for comments....PLEASE :blue: PM's are good but maybe someone else has the same problems...

 

[TOHATSU GURU]

Re: Proformance isn't what i think it should be????? 9.9

You should get rid of it and buy another brand...Preferably a Suzuki, Yamaha or a Honda.

 

[rocket rich]

Re: Proformance isn't what i think it should be????? 9.9

you interested ??? and why a different brand??

 

[rocket rich]

Re: Proformance isn't what i think it should be????? 9.9

yesterday the wind was up around 20mph and as I rounded the bend in lake the motor acted like it was out of the water and it got a little scary?? as the boat lift up into the wind and I lost part control of the boat never happen in the 25 years of fish this water.. WHY CAN ANYONE ANSWER THIS?? DO i HAVE THE MOTOR ON THE BOAT WRONG????

 

[pvanv]

Re: Proformance isn't what i think it should be????? 9.9

In North America, Tohatsu has not sold any 9.9 motors in a long time. You may have a 9.8A3, which is a completely different animal. What is your actual rig, (model/serial) and what kind of boat? What prop pitch (and # of blades), and what is the WOT tach RPM?

 

[rocket rich]

Re: Proformance isn't what i think it should be????? 9.9

Paul you are right it's a 9.8a3 with electric start, can't answer your questions as the motor has standard equipment on it??? My Boat is a 1542 Lowe a very old but good boat 1978 model,it's set up the way I like it .. I'm a Jiggin fisherman . one polel an tube jigs. mostly trolling motor used... What I do know is that a little more power would have gotten me through the scary part of the day..

 

[Packard8]

Re: Proformance isn't what i think it should be????? 9.9

Paul you are right it's a 9.8a3 with electric start, can't answer your questions as the motor has standard equipment on it??? My Boat is a 1542 Lowe a very old but good boat 1978 model,it's set up the way I like it .. I'm a Jiggin fisherman . one polel an tube jigs. mostly trolling motor used... What I do know is that a little more power would have gotten me through the scary part of the day..

You have a 15 foot square bow jon boat, right? I think you might be asking too much of any brand 9.8 HP motor to push that rig into a 20 MPH wind. Are you loaded heavy in the stern? Jon boats have a lot of frontal area and drag.... you might try more weight in the bow to keep it under control in a headwind. Most boats of that size and design I've seen have 15 to 25HP motors.

 

[Star]

Re: Proformance isn't what i think it should be????? 9.9

Rocket,
what the H.... were you thinking.. Chicken of the sea here i would never venture out in that kind of wind!!! It is probably a tiller motor with a battery and tank in the back plus your 175# WOW !!! You better go to church next Sunday!!!!

 

[rocket rich]

Re: Proformance isn't what i think it should be????? 9.9

Been there done that....all are correct. Been doing it for many years , just need to be carefull..... my weight is 230

 

[WN2712NJ]

Re: Proformance isn't what i think it should be????? 9.9

I think we would need to know a lot about your boat/setup to offer intelligent opinions... like how heavy is the boat, weight of people/gear in the boat, and distribution of weight. Small boats are really sensitive to all of this. For what it is worth, I used to have a 9.9 on a 14 foot Duroboat, a "tinny" skiff that weighed maybe 250 pounds empty. With fuel and one person, it would plane and top out at about 19mph. With 2 folks, very marginal to get on a plane, with 3 forget it. I also had to put as much weight (e.g. the battery) as far forward as possible. Now we have a 20HP Tohatsu on it, and are much happier - will plane 3 people + gear easily. Even works for towing a tube!

-dm

 

[rocket rich]

Re: Proformance isn't what i think it should be????? 9.9

Hey Chicken of the sea you need to get a life. I've used this boat for more years than you are old.. 2o mph wind is not a big deal for me on my slough. My old 9.9 Johnson never had that problelm. Had I known that the 4 sroke was light on power I would have gone with a 15 hp or stayed with my old 1996 motor,which I still have and will more than not put it back on my boat.. I fish by myself 99 % of the time, and the weight hasn't changed much in the last 20 years. I guess it all depends on what you are use too.. Have a Great DAY.. RR

 

[pvanv]

Re: Proformance isn't what i think it should be????? 9.9

Rich,

The power is rated by the government, at the prop, so the output of your old 9.9 (unless it was upgraded to a 15) is about identical to the new 9.8 (assuming the 9.9 is in perfect health). That said, the 4-stroke motors have different torque curves from the 2-strokes, so you may see some performance differences at various throttle positions. The motor is likely not underperforming. Odds are it is not rigged the best. Without a tach, you will not know, and are just guessing. You must get the WOT RPM very near 6,000, or you will not be propped correctly. Experimenting with jack height and trim will also make a significant difference. Each and every boat is different, and the rigging must be done by trial and error... and instruments (including a good speedometer and tachometer).

Incidentally, the motor will not run any differently after break-in. Yes, once the rings seat well, say after 20 hours of very hard running, they may be a little more efficient, but it will not be noticeable in output... only in oil gain.

HTH (hope this helps).

 

[pvanv]

Re: Proformance isn't what i think it should be????? 9.9

You should get rid of it and buy another brand...Preferably a Suzuki, Yamaha or a Honda.

There's always the Lehr

 

[TOHATSU GURU]

Re: Proformance isn't what i think it should be????? 9.9

Lehr would certainly be the best possible choice for him

 

[rocket rich]

Re: Proformance isn't what i think it should be????? 9.9

Thanks again , Paul .. You always give me the good answers. I'm trying hard to make do with this motor as it starts great and very smooth running. I've fooled with the height adjustments and I think I'm right with it. The bow does ride a little higher than I'd like at full speed .I'm going to add some weight around the front pedestal like a concrete block or two. I may have to readjust the height again.

 

[rocket rich]

Re: Proformance isn't what i think it should be????? 9.9

Is there a fix for the carb, say upgrade to 15hp??? what's a Lehr????

 

[pvanv]

Re: Proformance isn't what i think it should be????? 9.9

Is there a fix for the carb, say upgrade to 15hp??? what's a Lehr????

The 9.8 is the "big brother" of the 8, so no... no upgrade.
The Lehr is an LP-powered unit. Interesting concept, but only useful in a niche market, not unlike the electric units... not for everyone.

 

[pvanv]

Re: Proformance isn't what i think it should be????? 9.9

Lehr would certainly be the best possible choice for him

Thought you'd appreciate that, Elvin

 

[Packard8]

Re: Proformance isn't what i think it should be????? 9.9

I've fooled with the height adjustments and I think I'm right with it. The bow does ride a little higher than I'd like at full speed .I'm going to add some weight around the front pedestal like a concrete block or two. I may have to readjust the height again.

Rather than adding more overall weight to the boat (concrete blocks) try moving heavy items (battery, anchor & chain, fuel tank etc) to the bow. If the bow still rides too high you may need to adjust the trim. If that fails, might be time to invest a few dollars to hire a pro to get the rig setup to optimum. Have you consulted the selling dealer about the problems?

 

[steelespike]

Re: Proformance isn't what i think it should be????? 9.9

A 9.8 on a reasonably light boat could run about 21 mph.
See if you can find some tohatsu tests on you tube.
The 4 stroke will be sensitive to prop selection and needs to be able to be near its max rated rpm.
A 9.9 2 stroke will kick its butt on hole shot.
For goodness sake don't add more weight; move existing load around for better balance
You may need a tiller extension so you can sit in the middle seat.
Lighten the load The motor will run an hour at wot on less than a gallon of gas perhaps a 3 gallon tank
would save weight. If all you do is start the motor with the battery a garden tractor battery is plenty
and will save a bunch of weight. Move the tank forward.
Test it with the battery forward use jumpers so it is still hooked to the motor
so as not to damage the charging circuit.