"Kent S. Brown" wrote:

I'm working with a friend on his RV-6 Aircraft. We have finished the

tail, and are working on the

wings. We haven't bought the fuselage yet or the firewall forward. He's

thinking of putting the

Mazda Rotary engine in it. I can't find if you guys make a fire wall

forward kit for the RV-6, or

what the costs would be for all the pieces to hang the Mazda engine. We

can buy a used O-320

Lycoming for around $4,000 and put as much into it to get it ready to

run.

I see where $3,500 will
get you a rebuilt Mazda, but dose that include anything else, like the

reduction drive, engine

mount etc.? Lycoming and Continentals are designed to run a low rpm with

high horse power.

Traditionally car engines are designed not to operate at 75% power for

long periods of time. I

don't know how Mazda's hold up at that power output for long periods. I

don't have any trouble

using a Mazda engine, I just don't know enough about it being used in

aircraft over long period of

times, and what's available in kit form right now. I'll keep researching

it until I know one way

or the other, any help from you guys would be greatly appreciated.

Thanks

Kent S. Brown

The Mazda holds up fine as an aircraft engine. Better than an aircraft
engine in fact as it does not have any valves to burn.

All the pieces are slowly becoming available from various and assorted
suppliers. You won't save much money over a rebuilt good used
Lycoming if you can find one at that price and if you can over haul it
your self. $4,000 sounds low for a good run out Lycoming. The factory gave
me $6,500 for a run out Continental O-470 with a cracked crank
a couple of years ago.

Good 13B Mazda engines can be had starting at $350 and up. Generally
it cost less than $2000 to overhaul them.  It will cost another
$4000 to $4500 for PSRU, EFI/IGN, intake manifold, motor mount and
cooling system. Less if you build some of the parts yourself.

A Mazda 215 HP 13B firewall forward package is available from Power
Sport for about $20,000.

Paul Lamar

Jim Kidd wrote:

I have heard of a book/guide to converting Mazda rotaries for aircraft use.
Can someone tell me what it is and where to get it?
Jim Kidd

Tracy Crook sells such a book.  
http://www.rotaryaviation.com/

Paul Lamar
 
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