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How many HP do You think that I have in my Polaris indy trail 1985
with a Rotax 503 with dobble carburettors mikuni 36mm and single pipe?
I put in Rotax 503 engine in my sled, Cause of my polaris engine broke down.

I do also Locking for Hi-comp head to the rotax 503 engine.
Do you know about a site where I can find it?
 

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58-60hp.
 

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My 81 liquifire 440 made 60hp stock. I would think that a 503(497cc) would make closer to 70hp.
 

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503 fan making 70 hp? piston ported at that.. you sure? the newest 570 ac fan only makes 80 hp.
 

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The ac 570 fan makes 62hp. The 500 liquids make 80hp. Id say the 503 is around 45-50hp. It wasnt made for hi power.
 

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Originally posted by snake61047
[br]My 81 liquifire 440 made 60hp stock. I would think that a 503(497cc) would make closer to 70hp.
Whoa dude, no way.[;)]
 

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I may not be the sharpest tool in the shed, but why would a polaris have a rotax motor in it?
Am I missing something?

Always willing to learn....

Tom
 

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Originally posted by tomvitt
[br]I may not be the sharpest tool in the shed, but why would a polaris have a rotax motor in it?
Am I missing something?

Always willing to learn....

Tom
he said it has the rotax in it cuz his motor blew up
 

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Originally posted by Triple650Indy
[br]
Originally posted by snake61047
[br]My 81 liquifire 440 made 60hp stock. I would think that a 503(497cc) would make closer to 70hp.
Whoa dude, no way.[;)]
Ya way!!! I'm a Deere freak and if you look at the tech info Deere claims 60 hp out of their 440 fireburst engine made by Kawasaki. It is the same engine out of the invader.
 
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