Anyone a Marine Mechanic?

Well the silver thing is an exhaust port, and it can run through either actually, I was reading up on this model Glastron and it had the option for s second engine, And that was the exhaust port the other engine used, Unless you opted for a smaller outdrive (Below the 270 model I have) Then it too would use the silver exhaust port.... For the record, Im thinking I wanna run it to that exhaust port cuz I think its cooler lol. Even with a water hose hooked up to it it still overheats though..

The yellow cap on the battery is where I have the hose port, And Even with a hose hooked up to it there is gets hot... It takes a while so maybe it only gets hot cuz its sitting there with no air flow? Shouldnt it just not get hot? haha

Better shot of the outdrive..


Also see the lil red hose with the bolt in it? Its like a self made port to get into the engine.. Maybe to blow it out? Or? I dunno, Anyone have a clue?

All my marine knowledge comes from working on my two Kawasaki 550's, but the same should apply to a boat.

How hot is it getting? Is the water coming out of the engine hot enough to burn you, steaming hot? If so then it's probably ok. My jetskis water coming out of the "pissers" is hot hot enough to blister your skin, you can't touch the engine, and when I shut off the engine they will blow steam out the pissers. This is normal. I know that you don't want a thermostat, don't remember why. Had something to do with the small amounts of dirt that the engine picks up out of the water will clog up the t-stat.

Well, thats a pretty valid point, It gets to 210 degrees. And stays there never goes past, Now I know thats typical for an automotive engine, But not a marine, everyone tells me 160-180 max in a marine engine? The thermostat for this engine is a 170 degree

The old VDO temp. gauge had a green/yellow/red for engine temperature, and it always was deeb in the red, The I got an autometer temp gauge and installed a new autometer sending unit it reads 208-210 degree on the water, and after a while while running on land with a hose.

I think your ok at 210*. Do you have water coming out the pissers? The exhaust? If you have water coming out both then you can be 99% positive the cooling system is working the way it should. Does the engine bog down when it starts getting hot, I'm talking in the water under load. Rnnning on land is completely different the running in the water.

Yes water comes out of the exhaust, I just ran through the manual R and R guide, and the thermostat thats suppose to be in there at fully open is at 153 degree... Lol. So now Im concerned about running at 210 haha. And yea, it does bog down bad in the water, we took it out the last time and it couldnt go past about 12-1300 rpm without falling on its face and missing terribly, I thought it was the alt. not charging? The wire on the alt that goes to the starter wasnt hooked up (still isnt) so I didnt and still dont know if its charging, I tested the lead on the alt with a volt meter while running last summer and it was just between 11-12.4 volts while running so I assumed the alt doesnt work. BUT without that white wire hooked up it might not have gotten "signalled" to turn on... Ahhh so many questions lol. cant wait til its sunny again so I can work on it. Needless to say I brought another brand new battery just in case, and never needed it. with the stereo running all day, and trying to start it a million times before I hit that sweet spot on the timing, Also I thought it was fallin on its face from the timing too cuz I didnt know what it was adjusted to adjusting it on the fly in the water. Also it gets a bit a crank case smoke, out of the ventilation hose that runs to the carbs, what would cause this? timing?

Oh forget to say, No on land on a hose there is no bog at all, revs great and runs smooth as could be, on the water....another story lol.

I would start with adjusting the timing (set the timing around 6*-10* BTDC, good place to start) and changing the spark plugs, cap and rotor. Then see how the carbs are running (rich or lean). To check, get out on the water and run the boat as fast as you can for a couple minutes, then shut the engine off BEFORE throttling back. While floating around pull the spark plugs and see how they look. Sooty, you are too rich, white, you are too lean. Adjust the carbs till you get that tan color. This is how I tune the carbs on my 2-strokes. When my skis plugs foul the engine falls on its face. These marine engines are 95% the same as an automobile engine, same techniques apply.