UPGRADE ROTAX912UL 80->95 HP

by jan kerstens in 912 / 914 Technical Questions 9 years ago

Hello,

I would like to have your opinion on the following upgrade of an ROTAX912UL:

1. reboring of the cylinders and treatment with Nikasil
2. installation of 4 pistons type Woessner of forged aluminium

The increased displacement and compression results in an upgrade of power from 80 to 95 HP.

Thanks.

Re: UPGRADE ROTAX912UL 80->95 HP

by jan kerstens » 9 years ago

jan kerstens

34 131 5

Hello,

To be more specific:

1. can the crankshaft take the additional load?
2. can the camshaft take the additional load?
3. any other limiting factor?

Thanks

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Re: UPGRADE ROTAX912UL 80->95 HP

by Rob Seaton » 9 years ago

Rob Seaton

3 1.32k 240

buy a 912ULS

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Re: UPGRADE ROTAX912UL 80->95 HP

by Roger Lee » 9 years ago

Roger Lee

125 5.12k 4.52k

I have heard some have not liked the results with the upgrade.
I'm with Rob. Sell the UL and buy an ULS.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

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Re: UPGRADE ROTAX912UL 80->95 HP

by jan kerstens » 9 years ago

jan kerstens

34 131 5

Thanks guys,

Your answer is as clear as one can get.

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UPGRADE ROTAX912UL 80->95 HP

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