Robert Posted May 27, 2006 Share Posted May 27, 2006 Hi All What are the max hours recomended before the rotax 912 needs a rebuild? It it possible to rebuild the motor to 0 hours? And if so can this be done by any qualified person ? Link to comment Share on other sites More sharing options...
Guest micgrace Posted May 27, 2006 Share Posted May 27, 2006 Hi, It is possible to zero hour any engine, if not a cheap exercise. Possibly for this engine, reground/new crank, crack test of all parts (x ray / dye penetrant). New bolts, rebore/sleeve, new vavles and guides, rebuilt/new cam/gearsnew/rebuilt carbs, pump, rebuilt redux unit starter/alternator/dist. and so on. But knowing the purchase price of this engine,could quite possiblybe economical. As for qualified (LAME), depends what category (aircraft) it's in. No doubt the agent can recommend someone in your area. Would also need to check on parts availability esp. u/s brgs o/s pistons. Or there might be available an exchange unit ?? There will be an online parts catalogue at Rotax, but you will need to know what you are looking at. I vaguely recall some aircraft engine mob at Archerfield having just that (reco unit). Hope that helps somewhat. Micgrace disclaimer. This is just conjecture. You will need to check with the agent, LAME Link to comment Share on other sites More sharing options...
Guest ozzie Posted May 27, 2006 Share Posted May 27, 2006 i have listened to a few conversations on the pracability of rebuilding any Rotax engine. this is what a major Rotax agent/rebuilder in the states had to say. other than top end overhalls it is impractical cost wise to do complete overhalls. it is a bettter exersise to replace the whole engine with new. this is the preferred method by the manufacturer. the cost of parts and labour come in over the cost of a new engine. liability is higher for a rebuilt engine. so the manufacturer has priced the major components to relect this. also interesting to note that the US Air Force use a large number of 912's for the unmanned drones. As the electronics in these are worth a small fortune the engines are replaced with only a few hundred hrs and are then DESTROYED and buried. enough to make you cry i think. seach thru the archives of ultraflight radio.com for some interesting information on rebuilding and maintaining Rotax engines, Ozzie Link to comment Share on other sites More sharing options...
Guest micgrace Posted May 27, 2006 Share Posted May 27, 2006 I'd get some quotes on whatan overhauled one would cost and compare it to new price. These engines are expensive, so the possibility of a rebuild costing less than the engine is high. But this is not a type of engine for amateurs to have a go at under any circumstances. Alsoanother subject worth mentioning is liability of self maintenence. If I amfinished with an "experimental aircraft" i.e. self maintainedI would break it up for parts, including the engine and not resaleit at all. It really has come to this stage in this country And no passengers except for immediate family (kids/wife) when flying. Micgrace disclaimer. This is conjecture only and anyone is requested to approach an appropriately qualified LAME for advice Link to comment Share on other sites More sharing options...
greggf Posted May 27, 2006 Share Posted May 27, 2006 After my 912 has carried me safely for 1,500 hours (recommended tbo) I shall bury it with full honours and gratefully buy a new one. For $15 (or so) per hour, it is cheap life insurance. Gregg Link to comment Share on other sites More sharing options...
Guest Tassieladyflyer Posted January 9, 2008 Share Posted January 9, 2008 Can anyone give me an idea how much a Rotax 912 replacement would cost... Thanks Link to comment Share on other sites More sharing options...
Guest pelorus32 Posted January 9, 2008 Share Posted January 9, 2008 Last time I enquired regarding the Rotax 912ULS (100hp) it was ~$AUD23,000. But since then there has been a lot of currency movement and this may have affected the price. Ring Bert Flood. If it's for a Gazelle then the price will be different as I think the Gazelle uses the 80hp 912 but it uses the certified version. Ian should be able to help there. Regards Mike Link to comment Share on other sites More sharing options...
BigPete Posted January 9, 2008 Share Posted January 9, 2008 You could buy a Jabiru 6 cylinder (120 hp) and have enough left over to run it for 2 years....;) regards Link to comment Share on other sites More sharing options...
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