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Sea Doo Rotax

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river1

Joined: 07 Sep 2007
Posts: 28

Posted: Wed Oct 10, 2007 5:37 pm Post subject: Sea Doo Rotax

Are the 2stroke sea doo engines same as ski doo and the aircraft version ? .

Malcolmbru(at)aol.com
Guest

Posted: Wed Oct 10, 2007 5:43 pm Post subject: Sea Doo Rotax

yes just like a goat and a horse are alike they both have the same number of legs a head and a tail.

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Thu Oct 11, 2007 5:22 am Post subject: Sea Doo Rotax

The ones I've seen certainly don't look the same.



Noel



[quote] --

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

inquire(at)CHESTERMAN.CA
Guest

Posted: Thu Oct 11, 2007 5:55 am Post subject: Sea Doo Rotax

They are different engines but some of the parts are the same.  If you find 

the right model the gaskets interchange as do most of the rotary valve 

parts.   from there things differ.



dave chesterman.

back on the list after a long break. 701-582

---

ProWash

Joined: 26 Apr 2007
Posts: 18

Posted: Thu Oct 11, 2007 7:47 pm Post subject: Re: Sea Doo Rotax

I think the important difference is that the Sea Doo Rotax doesn't have a integral water pump.

_________________
R Craig
North Central Arkansas
N701LR CH701 SP ELB
30 HRS into Phase One testing
Do Not Archive

river1

Joined: 07 Sep 2007
Posts: 28

Posted: Fri Oct 12, 2007 5:12 am Post subject: Re: Sea Doo Rotax

Thanks for helping ; the reason I ask is that they are plentyfull around here . You guys think , provided the right model , that a conversion could be made ? .

inquire(at)CHESTERMAN.CA
Guest

Posted: Fri Oct 12, 2007 7:17 am Post subject: Sea Doo Rotax

also sea doo crankshafts have threaded ends unlike the sleds and aviation 

motors. so first thing you would have to do is change the crankshaft.



dave c

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river1

Joined: 07 Sep 2007
Posts: 28

Posted: Fri Oct 12, 2007 11:05 am Post subject: Re: Sea Doo Rotax

Dave ; you seem to know , so do you think is worth the effort in terms of money savings ? . The other option that I cosider is buying a runout and rebuild it .

inquire(at)CHESTERMAN.CA
Guest

Posted: Fri Oct 12, 2007 11:45 am Post subject: Sea Doo Rotax

I have been trying to use the lowest cost method for awhile.

The sled motors are the closest but you get single ignition. Some areas just 

put a gearbox on a sled engine and when they run out they go to the skidoo 

dealer and buy a new long block.

I prefer to keep the dual ignition and have stuck with the aviation motors 

but use rebuilt cranks from a good engine builder. gaskets i get from 

aftermarket which are the same as some sleds. I use water pump rv shaft 

stuff from the 580 seadoos from about 1990.

If you have nothing now I would buy the cheapest complete aviation 582 i 

could find( holes in the case, broken crank and everything) to get the 

carbs, igintion ,gearbox, exhaust, etc and then buy a new long block blue 

head 582. and make one engine. That is the least expensive way to go if you 

find a low cost doner engine.

If you find a good runout 582 you can get them rebuilt by one of the 

national engine rebuilders using aftermarket sled stuff for about 1500 but 

don't tell them its form a plane or the work stops there.

using rotax aviation parts to completely rebuild a runout engine will cost 

about the same as a new short block



dave c

From: "river1" <pedro(at)mycingular.blackberry.net>

To: <rotaxengines-list(at)matronics.com>

Sent: Friday, October 12, 2007 3:05 PM

Subject: Re: Sea Doo Rotax

 	  Quote: 	
		   

 <pedro(at)mycingular.blackberry.net>



 Dave ; you seem to know , so do you think is worth the effort in terms of 

 money savings ? . The other option that I cosider is buying a runout and 

 rebuild it .





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=139624#139624

river1

Joined: 07 Sep 2007
Posts: 28

Posted: Fri Oct 12, 2007 12:47 pm Post subject: Re: Sea Doo Rotax

Very good Dave ; Do you mind pointing to the rebuilders , source for short blocks etc. . If you want do it off line , I didn't mention , but the project in question is a 701 . Thx

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Sat Oct 13, 2007 3:58 pm Post subject: Sea Doo Rotax

As soon as your local SkiDoo shop sees the dual ignition they will start to

ask questions and as you say the work stops there.



Noel



[quote] --

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

river1

Joined: 07 Sep 2007
Posts: 28

Posted: Sat Oct 13, 2007 4:37 pm Post subject: Re: Sea Doo Rotax

Noel ; There are no local ski- doo shops here only sea-doo , and I think most local techs don't care as long as you pay . Thx .

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