FaceDeAce
Member
Hi! I have been going through fixing and tuning a couple of old SeaDoo for the family funtimes. It has taken awhile to go through everything on each of them. I've got them running solid, reliable, and safe.
I finally got some lake time test running in yesterday. Based on how they ran,
..... --> I am looking for some help and guidance with respect to which impeller to put in which machine. Here are the basics of what I have;
The Doos
'94 BRP SeaDoo SP 580(587), stock
'97 BRP SeaDoo SPx 800(787), modified. Dual carb. Ocean Pro flame arresters, pump intake grate, FactoryPipeII, water injection, and hirev CDI.
The Impellers:
. 271000669 - I can't find any pitch info on this number (help!?). Closest to is seems to be 271000668 which lists as a 16-35 for a 720SP.
. Skat-Trak 16-21 super slim stainless.
. Spare 204160072 which looks like a 17-22 swirl.
( I have been looking at this link page for impeller info: http://www.seadoosource.com/impellerref.html )
Here is my current setup and issues.
--> The '94 SP 580. The impeller in it now is the number stamped 271000669.
This machine is running like a sluggish log dragger. Not reaching anywhere near full rpm from hole shot all the way to top water speed. I know everything else on this machine is fine (fuel, carb, plugs, etc). It runs well and solid. LS and HS needle adjustments had no effect. It is just really sluggish in the water - like and overloaded overpropped outboard boat motor. I know it is a 580 which doesn't have alot of power, but it should spool up much more than it does. So I really suspect the impeller in the 580 is just way too big / too tall. However I don't have a pitch gauge and I can't find a spec for that stamped number to confirm what is in there.
--> The '97 SPx 800. The impeller in it now is a Skat-Trak 16-21 super slim.
This machine rips up the algae (LOL!). Seriously it has tons of power, spikes to power band rpm quickly, and is fairly fast on the water. However, I suspect it has even more performance thrills to offer that is untapped by perhaps not having enough impeller behind it. It seems to top up and run a high rev really easily.
So I have one machine that I feel is overpropped and the other one seems underpropped and I have a spare. With the above info, which of the three impellers would be best installed in which machine?
Right now I am leaning towards:
1) Put the spare 204160072 into the SPx800
2) Put the Skat-Trak 16-21 into the SP580
3) Shelf the 27100668 from the SP580 until I find out what it is. If it is a 35 pitch prop - perhaps it would be better in the 800 for top speed?
Looking for some input and guidance please before I start taking things apart, again.
I finally got some lake time test running in yesterday. Based on how they ran,
..... --> I am looking for some help and guidance with respect to which impeller to put in which machine. Here are the basics of what I have;
The Doos
'94 BRP SeaDoo SP 580(587), stock
'97 BRP SeaDoo SPx 800(787), modified. Dual carb. Ocean Pro flame arresters, pump intake grate, FactoryPipeII, water injection, and hirev CDI.
The Impellers:
. 271000669 - I can't find any pitch info on this number (help!?). Closest to is seems to be 271000668 which lists as a 16-35 for a 720SP.
. Skat-Trak 16-21 super slim stainless.
. Spare 204160072 which looks like a 17-22 swirl.
( I have been looking at this link page for impeller info: http://www.seadoosource.com/impellerref.html )
Here is my current setup and issues.
--> The '94 SP 580. The impeller in it now is the number stamped 271000669.
This machine is running like a sluggish log dragger. Not reaching anywhere near full rpm from hole shot all the way to top water speed. I know everything else on this machine is fine (fuel, carb, plugs, etc). It runs well and solid. LS and HS needle adjustments had no effect. It is just really sluggish in the water - like and overloaded overpropped outboard boat motor. I know it is a 580 which doesn't have alot of power, but it should spool up much more than it does. So I really suspect the impeller in the 580 is just way too big / too tall. However I don't have a pitch gauge and I can't find a spec for that stamped number to confirm what is in there.
--> The '97 SPx 800. The impeller in it now is a Skat-Trak 16-21 super slim.
This machine rips up the algae (LOL!). Seriously it has tons of power, spikes to power band rpm quickly, and is fairly fast on the water. However, I suspect it has even more performance thrills to offer that is untapped by perhaps not having enough impeller behind it. It seems to top up and run a high rev really easily.
So I have one machine that I feel is overpropped and the other one seems underpropped and I have a spare. With the above info, which of the three impellers would be best installed in which machine?
Right now I am leaning towards:
1) Put the spare 204160072 into the SPx800
2) Put the Skat-Trak 16-21 into the SP580
3) Shelf the 27100668 from the SP580 until I find out what it is. If it is a 35 pitch prop - perhaps it would be better in the 800 for top speed?
Looking for some input and guidance please before I start taking things apart, again.
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