There are some guys out there that have major cht cooling issues with the Jabs. Rotec Engineering here in Australia has developed a water cooling system for the Jab which has all new cast jacketed heads. There are a few more videos on their Youtube channel.

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Comment by Bracken Smith on August 13, 2013 at 9:31pm

Any thoughts on installing water cooling just on the cylinders that get way too hot?  A partial conversion?

Comment by Ian McClelland on November 25, 2012 at 3:49pm

Does anyome know if someone has successfully fitted the water cooled heads to a Jab 3300 fitted to a 601XL-B?

The Kit is about AUS $4000.00 plus" suitable" radiator and cowl mods.

Comment by John Cange on April 21, 2011 at 4:55pm  


Liquid cooled heads are ready. Anybody game?

Comment by Paul Hammond on November 2, 2010 at 6:09pm
I like the idea the price will probably scare the pants off most
Comment by Phill Barnes on November 2, 2010 at 5:35pm
In my opinion, it's great to see jab temps low but maybe a little to low. In their other videos that can be viewed by clicking the link in the caption below the video, they note that they believe they can halve the size of the radiator. Whilst water cooling clearly works well, I do not believe it is the answer for jabiru as it looses one major edge that it has over the Rotax, simplicity. It is known that rough surfaces and cast in particular will dissipate heat better than billet aluminium so maybe cast heads with longer fins would have the same effect without the extra weight. There is no doubt that they have made a great achievement but if water cooling was the answer then the rotary engines that they manufacture would also be water cooled, but they are not. My hat goes off to them for their initiative and I am sure that there will be further improvements from them.

Comment by Chris Aysen on November 2, 2010 at 7:26am
Initially looks good. Extra weight might bring it within the new model 0200 weight but with 20 more hp; with a better cooling system. They might have something here. I'm just guessing about the weight maybe they could shed some light on it. Maybe we can get more of the Jabiru owners to comment on this.
Comment by Stephen R. Smith on November 1, 2010 at 10:38pm

Thanks for posting this. Its interesting.

As to the Rotax 912, its a fine engine. I do like the smoothness and the additional power of the Jabiru - reliability could be better.

Comment by Andre Levesque on November 1, 2010 at 7:41pm
If you need water cooled on a Jabiru 3300.... why not embrace the Rotax 912S instead?

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