Author Topic: Rotax 787 engine in to pilot  (Read 2016 times)


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Rotax 787 engine in to pilot
« on: January 13, 2010, 06:33:30 PM »
Hello new to the forums I did a search and found other post similar but no one running the 787 rotax...

so I got a fl350 dirt cheap no motor or clutch I am picking up a rotax 787 motor for it with carbs and I found my electric ignition box and I am looking at this clutch

My Questions:

What is the fuel ratio I can run on this motor my banshee is currently 32:1. Can I run the same ratio through the Rotax?

I am also having issue locating a radiator and water pump can someone point me in the right directions for one?

Will have to widen the rear so the transmission align with the clutch?

Lastly what issues do any of you see?  

Thank you all for any assistance and guidence you can offer?


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Rotax 787 engine in to pilot
« Reply #1 on: January 15, 2010, 11:21:38 AM »
If it's a fl350, I would be nervous about running that much power through that transmission. My 350 broke the trans with a pure stock motor. Others using sled engines in 350s haven't widened the frame, but had to re arrage some frame tubes on the gas tank side to allow the engine to move over enough to line up the clutches.

32:1 should be fine. That's what I run in my 597 Rotax. I have no suggestions on the water pump, but radiators for a Honda Civic off Ebay have proven up to the task of cooling sled motors.
The usual 'my two cents' disclaimer applies. :)


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Rotax 787 engine in to pilot
« Reply #2 on: March 12, 2010, 08:19:09 PM »
Isn't the 787 a Triple? If you're going that far I'd look at the 809...

What the Ratio would be I'm not sure they all had oil injection far as I know.

Then again was the 787 a single pipe triple? All the 809's were triple pipe triple stingers. Probably would be harder to tune in when they were meant for triple pipes.