I recently purchased a used rebuilt motor(suppose to have only 10 hours on it) for my 95 seadoo sp. As I am new to all this, I am wondering if I am expecting too much out of these 587's. What I am referring to, is that when I take off, its like a slow start for 30 feet or so, and then it takes off and runs fast. I see other pwcs out here, (older ones) and they are able to spin ain out from a standstill, or start hauling butt from a standstill. With these 587's, is it normal to get a slow start until you are up on a plane? Thanks again in advance for answering my questions.
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Back on the water now, but have general take off question
- Thread starter kenagain
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Dr Honda
Well-Known Member
First... what other skis are you comparing it to??? a 260hp monster, or other early 90's... 60'ish HP skis?
The 587 engine is the smallest, and oldest engine... and as I recall they are only suppose to make 55 hp. (60hp for a twin carb) You have a relatively light hull, but not as light as the original ski it was put in.
From a dead stop (or idle speed) You should be able to be up on a plane in just a few seconds. If you hear the engine hit the rev limiter... then you have some pump/driveshaft seal issues that can be limiting your performance.
Just an FYI... your 95 Sp only has a claimed 38 mph top speed. So... it's going to be one of the slower skis on the lake. But that doesn't mean you can't have fun with it.
It's probably not what you wanted to hear... but I thought I would throw it out there for you.
The 587 engine is the smallest, and oldest engine... and as I recall they are only suppose to make 55 hp. (60hp for a twin carb) You have a relatively light hull, but not as light as the original ski it was put in.
From a dead stop (or idle speed) You should be able to be up on a plane in just a few seconds. If you hear the engine hit the rev limiter... then you have some pump/driveshaft seal issues that can be limiting your performance.
Just an FYI... your 95 Sp only has a claimed 38 mph top speed. So... it's going to be one of the slower skis on the lake. But that doesn't mean you can't have fun with it.
It's probably not what you wanted to hear... but I thought I would throw it out there for you.
Thanks for responding!
I am really comparing it to other older seadoos, waverunners, that are similar to mine. When they take off, It appears they have instant power when they hit the throttle. On mine, giving it throttle starts moving me and gaining momemtum, and then after about 20-30 seconds of this I get this surge of power and everything is great. I even love the max speed it give me.
Its the out of the hole speed m concerned about. That instant power feeling I guess is what Im talking about.
I have read about the wear rings on the forum. Looking thru the venturi side, it appears the prop is sitting right on top of the ring, meaning no gaps where I can see light. Can the jet pump not be sucking enough water at startup possibly?
Thanks
I am really comparing it to other older seadoos, waverunners, that are similar to mine. When they take off, It appears they have instant power when they hit the throttle. On mine, giving it throttle starts moving me and gaining momemtum, and then after about 20-30 seconds of this I get this surge of power and everything is great. I even love the max speed it give me.
Its the out of the hole speed m concerned about. That instant power feeling I guess is what Im talking about.
I have read about the wear rings on the forum. Looking thru the venturi side, it appears the prop is sitting right on top of the ring, meaning no gaps where I can see light. Can the jet pump not be sucking enough water at startup possibly?
Thanks
Dr Honda
Well-Known Member
If the clearance is good... then that's not your problem. Also... if it's taking 20-30 seconds... that's WAY too much time.
You are sucking air. I'd start with rebuilding your driveshaft seal, and while you have it apart... make sure the pump shoe is sealed to the hull. (I'm betting it's the driveshaft seal though)
You are sucking air. I'd start with rebuilding your driveshaft seal, and while you have it apart... make sure the pump shoe is sealed to the hull. (I'm betting it's the driveshaft seal though)
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