CONTINUOUSWAVE

Here is a photo of my Yamaha 70-HP engine running on plane... Thanks Jimh. I have a three-blade propeller, I believe that it's the OEM propeller sold with the engine and looks like aluminium painted in white. As I may replace the engine I will likely not change its mounting height, but the discussi...

Let's continue talking about engine height. I did check my current engine level yesterday and based on your recommendations it seems really too low. The anti-ventilation plate is clearly below water and there is a lot of water splashing around the engine, that creates lot of drag. Engine is located ...

cards—where did you get the 17-gallon tank? It took me several years to find a suitable tank to replace my corroded aluminium tank, and I have to say that I regretted every single day the day when I trusted someone who told me to throw away my original tank and to put a plastic one instead. The sha...

Thank you all for these replies, very interesting. I believe my engine is definitely not as high as you recommend. I'll give a look at it next time I go to the harbor.

My 16 SL has a 1997 Honda BF90 engine... Good to know. If I go for a heavier engine, I plan to relocate the battery in the driver console indeed. I don't know anything about propellers and I have to admit that I'll have to learn. When you say that you raise the engine to the highest setting, how hi...

I found that someone did the same conversion that I plan to do, unfortunately he did not answer the messages. Cf.: http://continuouswave.com/forum/viewtopic.php?f=7&t=1647

Boat speeds are usually given in statute miles per hour (MPH) on the forum because ... Thanks for these explanations—very different to the common practice in Europe or at least in France, when the speed of anything going on the water is generally given in knots, i.e. nautical miles per hour. Even f...

biggiefl wrote:I have owned that engine ...

Interesting feedback. When you mean 41-MPH on a Montauk, you mean miles and not nautical miles, right ?

Your engine is more equivalent to 80hp. If you think shaving 3-4mph from top end is OK, the F70 should do well. The savings in fuel will be amazing, especially if you do a lot of slow speed driving. that's what I thought indeed. I don't know if it's true but I am making this assumption too ... If y...

I recommend to all owners planning a repower to simulate the new weight in the splashwell before buying new engine. Take current engine weight, future engineweight, calculate difference. Use bags of sand, water etc and place in splashwell and drive boat around. Observe trim, static position. Most 1...

Phil, thanks for the correction. I have to admit that I'm not used to talk about in lbs instead of kg's ! I did the conversion improperly. My 90hp weights 118kg at the moment, ie. 260lbs, and I'm afraid that the 350lbs of newer engines might be detrimental to the boat behavior... Even if it doesn't ...

Thanks for your advice. Indeed I was thinking about moving the battery in the front-right console (the 16SL has two consoles). You are completely right about my location, I'm living in France and fuel cost is a shame. At the car fuel pump we pay approx. 1.50€/l (that is 6.7USD/Gal.) and in the harbo...

Thank you all. I won't refurbish my old Yamaha. Even if it's a great engine, it's really noisy and it has a poor fuel economy. I'm using this boat mostly for fishing and trolling, and it's definitely not the best engine for this even if I find this to be a fantastic unit. The 70 and 75-HP engines I'...

Thanks jimh. [The Yamaha 90] still works but is really old and in not-so-good condition. The power trim doesn't really work anymore, and the engine is very heavy to lift. The engine cannot be blocked in lifted position [due to] broken brackets. [There is] lots of corrosion in the streering bracket. ...

In the future [I will re-power my 16SL] and get rid of my [1989 YAMAHA 90-HP two-stoke-power-cycle engine] even if the engine is still running. A time will come for a new engine. I will probably NOT choose a modern 90-HP four-stoke-power-cycle engine. I consider them too heavy for a 1991 16 SL boat....