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Guest
"I've got a Searay 180 wit
"I've got a Searay 180 with a 4.3L Mercruiser/Alpha Outdrive that seems very slow. I've owned it for about a year now and it's the only boat I've ever owned. I've got a 21 pitch prop on it and top speed is about 25 mph running at about 3000RPM. Under a load with that prop it won't rev past 3000. Take-off is also pretty bad. I've got a 19 pitch prop that I'm going to try which should help take-off but I know top speed is only going to get worse. Something just doesn't seem right to me. It seems to run as if the exhaust or intake are restricted, which shouldn't be the case. The engine doesn't run rough so I suspect it's running on all cylinders...but maybe not???
A little recent history...The first time I had it out this year it wouldn't rev at all. Turned out that both exhaust flappers were down in the bottom of the y-pipe choking the exhaust off. So the entire y-pipe was just replaced.
Since I got it I've always been a little disappointed in the performance of this boat. I was hoping that maybe one of the flappers had been in the pipe all along and that I would be pleasantly surprised by the performance with the new pipe. Such is not the case... Any thoughts or suggestions?"
"I've got a Searay 180 with a 4.3L Mercruiser/Alpha Outdrive that seems very slow. I've owned it for about a year now and it's the only boat I've ever owned. I've got a 21 pitch prop on it and top speed is about 25 mph running at about 3000RPM. Under a load with that prop it won't rev past 3000. Take-off is also pretty bad. I've got a 19 pitch prop that I'm going to try which should help take-off but I know top speed is only going to get worse. Something just doesn't seem right to me. It seems to run as if the exhaust or intake are restricted, which shouldn't be the case. The engine doesn't run rough so I suspect it's running on all cylinders...but maybe not???
A little recent history...The first time I had it out this year it wouldn't rev at all. Turned out that both exhaust flappers were down in the bottom of the y-pipe choking the exhaust off. So the entire y-pipe was just replaced.
Since I got it I've always been a little disappointed in the performance of this boat. I was hoping that maybe one of the flappers had been in the pipe all along and that I would be pleasantly surprised by the performance with the new pipe. Such is not the case... Any thoughts or suggestions?"