How To Make A Mercury 9.9 Faster

Oktober 04, 2021 Posting Komentar

The Tohatsu is a few pounds lighter than the Mercury and it has 98 horses rather than 99 but the power difference is negligible. The 99 was much quieter and had less vibration than the 25.

Mercury 9 9 To 15hp Upgrade 2006 And Newer 4 Stroke Outboard Carburetor

A deeper gearcase and a four-blade high-thrust propeller with matching gear ratio for.

How to make a mercury 9.9 faster. Mercury parts website used to have an easily accesible parts diagrams. Come join the discussion about troubleshooting builds ZETEC maintenance performance modifications classifieds and more. If you are looking to get the top speed out of your motor select a propeller that has a higher pitch.

Problem occurs on no wake areas I run a little faster than most to keep motor running not stalling. Hi DougThe exhaust tubeadapter plate is different also and the carburetor pn 9726 T 11The adapter plate on the 99 doesnt have a tube pn 41344 9 where as the 15 has one this tube pn 41344 T6 is to tune the exhaust for better performance. The fact that they arent real sidequests doesnt really matter considering how many long sidequests there are in the game.

How to make a 25 hp mercury outboard faster. Looking from the rear with the throttle plate in a horizontal position the internal throat diameter should be 0875 inches. The DLC also gives fast Merc Missions for farming.

Not saying the 2 stroke kickers are speed demons but in general they have more to give than the equivalent HP 4 stroke. The locking tiller on the 99 was great on the sailboat and operators liked having all the controls on the tiller. I have to rev up the motor in neutral and then almost slam the motor in gear to get moving.

This will slow the acceleration of the motor but the overall top speed will increase. If you are looking for faster acceleration decrease the pitch. Power to Weight Ratio.

Change the fuel check the oil and other levels. If you hear a slight change in pitch in the sound coming from behind the boat the prop could be starting to slip and your speed may drop by 1 or 2 MPH. Make sure you visited the toilet before boating to reduce the weight remove everything from the boat you can PFDs etc - its all additional mass ride naked since clothing also adds weight shave off every hair on your body for better.

Installed a new 15 hp carb on my 01 mercury 4 stroke 99 and it flys now got it up to 193mph before the swap topped out at 85mph. Starts very quickly but will not stay running. Gday I have a 95-96 model Mercury 99HP pushing my little Edge Tracker along hope to eventually upgrade to a 20HP however funds are tight at the moment Ive heard it mentioned that the 99s are exactly the same as a 15 but for a different carby or a spacer behind the carby which restricts it.

As a general rule of thumb switching to a propeller with an inch less pitch if youre unsure of exactly what propeller pitch is read Understanding Propeller Pitch will cause the engine to turn about 200 RPM faster. No modifications are necessary simply swap out the carburetor. A forum community dedicated to New Edge Mercury Cougar owners and enthusiasts.

Fits both standard and Bigfoot models. I had confidence in it. The fact is there is a lot that goes in to the Nicer 4 stroke Kickers to make them go SLOW and run Smooth the Sacrifice is the top end.

Converting Mercury 99HP to 15HP. Install the 15 HP carburetor. This will not work on remote console versions of the outboard - only tiller driven models.

The higher horsepower version will run faster and use more fuelthe lower hp version will be quicker out of the hole and get better fuel mileage at cruise. This carburetor upgrades the Mercury 99HP 2006 and Newer 4-stroke outboard engines to 15hp. This will help the engine last longer and increase its efficiency.

There were several carbs listed as options 99 and 15 bein two of them. Out of the engine. Executive editor Mike Vatalaro was a big fan of the larger Merc.

Change the propeller on the outboard. This will ensure the engine is in the best condition possible. Well sit down on the throttle lever or at least kick it with your foot to create more force make sure you give VERY hard WOT to beat the sh.

This question gets asked all the time and the answer is always the same. If this measurement is off by more the 02 inches the carburetor is on crooked. Run the boat up to full throttle and then very gradually add trim just bumping the trim button with your thumb and watch the boat speed.

Check part numbers for Carbs jets intake pistons exhaust tuner head and block porting may be different. It seem weird that 99 and 15 had the exact same parts diagram. It made me want to own a small boat Propane.

Next time I need a carb i might just order a 15HP. Very tough to keep running and not have the engine idle at high rate. Rebuilt the carb completely.

Clean the engine and perform a thorough maintenance on the engine. If anything theyre super helpful for filling out blade affinity charts for stuff like hunt down X of some mob or use X special 30 times or whatever without much effort in addition to the requiredrecommended. Fast reliable starting and controlled throttle response in all weather.

You can also gain boat speed via. It was smooth and quiet. My Montauk with 2005 Merc 75 is quicker to plane and to about 30mph and gets over 6mpg at 30mph cruise than previous Newport about 100lbs heavier than the Montauk with 1996 Merc 90.

Mercury ProKicker outboard motors deliver superior torque for greater acceleration control. Go to Mercury Marine web site click on Parts Express and then go down the parts list for the 20 and 25 HP engines. You just get more out of the 2 stroke.

If the internal diameter is 0675 you may have installed a 99 HP carburetor instead of a 15 HP carburetor. Even though the Tohatsu and the Mercury are essentially the same engine the Tohatsu lacks some of the features that make the Mercury easier to.

Fourstroke 9 9 15hp Prokicker Mercury Marine