Engines for sale & Warranty

We only manufacture engines to an exact specification as agreed with the customer in that we paint the engine in the colour of the customer’s choice; have different propeller shafts; different pistons with standard or higher compression; up-rated superchargers; automotive plug conversion kits and so forth, which means that every engine is effectively unique. We make engines either on the basis of a core-exchange engine from our customer, but more typically we agree a specification and select an engine from our large stocks (well over 60 used engines); manufacture a perfect engine to the customer’s specification; send it to him; this is then exchanged with the old engine which is returned to us. In this way the down-time is dramatically reduced. Of course, we only charge the overhaul price.

Our current pricing for engines is as follows:

  • Factory zero-timed AI-14R/RA engines, zero-timed HS-6 engines and zero-timed M14P (guaranteed 385hp) € 47,500.
  • Factory zero-timed M14PF (guaranteed 425hp) € 51,500.
  • Engine overhauls – we currently charge € 41,500 to totally overhaul an engine, but please see the Engine Overhauls page for further information.

Please note that our guaranteed horsepower figures are due to improved assembly and tighter supercharger clearances. The figures are from the calibrated Aerometal dynonometer.

Each engine is fully complete from the mounting ring forwards, but excluding exhaust system. Each engine is made with new pistons; our automotive plug conversion kit and all magneto parts are new. Importantly every part of the engine is built to a standard that we believe is higher than when the engines were factory new, simply because the final assembly is done by one of three specialists, each of whom has been doing this work for over 25 years and so we can significantly reduce the tolerances that have historically been used. Apart from more efficient engines that run cooler; start easier, the reduced clearances in the supercharger which we are able to safely achieve automatically give an additional 25/30 hp.

Each engine is tested for a minimum of three hours on the Aerometal dynamometer and all results given to the customer.

Unless requested we typically do not include generators since most of our customers change to light weight alternators.


We warranty all the engines that we sell on the following basis: All our products, whether complete engines; ancillaries or individual parts are warranted for 12 months or 100 flying hours, whichever comes first, from the date of installation. The installation of the item must occur within five years of delivery. Importantly, the customer must have requested long-term conservation for an engine for it to be guaranteed for this five year period. The warranty will not be valid if the engine/component has clearly been misused – for example through overheating. The warranty applies to the original purchaser of the engine and is not transferable without our formal agreement. We will, however, consider problems that occur outside these formal warranty periods. The warranty is restricted to replacement of the failed component, assembly or subassembly, or even engine if relevant, but not for any costs of actual replacement or any consequential losses – (i.e. cost of hiring other aircraft etc.).

We would point out that, even if properly preserved, as our engines are, there is a potential problem of the gaskets and seals drying out over a period of years. In consequence, if an engine is not installed until 4/5 years after delivery, there is a possibility of minor oil leaks, which are not covered in the guarantee.