Most TERRIER 200 Aircraft are powered by the Subaru EA 81 engine. Excerpts and links may be used, provided that full and clear credit is given to JD Finley and JdFinley.com with appropriate and specific direction to the original content. The induction system is dominated by the highly-regarded Ellicin Throttle Body injection system… a device I’ve flown on a number of other aircraft with great satisfaction. But suffice it to say that the equivalent Rotax 912 installation-with some 20 percent less hp-is several thousand dollars more expensive than anything NSI offers. This requires engineering, precision manufacturing, loads of hours to prove in the test cell, and then many hours/years of flight time to create a track record that customers believe and can trust.  To date, those who have tried have failed.  There are a few PSRU manufacturers around but not many and finding people with thousands of hours behind the units is very near rare/difficult.  If you do find one, find out how much he has had to work on/modify the PSRU – I’ll bet it’s a lot. And it’s the initial effort that tells the true story of NSI. AeroConversions products include the AeroVee Engine, AeroCarb, AerConversions Trim System and Throttle Quadrants, along with many other parts and accessories. Yes, he starts with a dependable Subaru EA-81 engine core… but only four major parts come from the automotive side of the game… the rest being fabricated on site or by a number of independent contractors. The engine cores are bought, used, from Japan (and driven only by little old ladies on the way to the Ginza…), where they are stripped, disassembled, chemically washed, and inspected to make sure they meet basic specifications. One has only to set the timing once and a simple tune-up is nothing more than the replacement of the plugs, cap and rotor, and adjustment of the valve lash to spec. Light, powerful, highly reliable, and extremely well-designed in terms of aeronautical needs, the Subaru revolution may have as much of an effect on the mid-range of sport avia­tion as Rotax has had on the most afford­ able end. en­gines is in the works that will offer every­ thing from the EA81’s 100 hp to the Subaru EJ2.2’s (Turbo Legacy) 200 hp! Ex­tended power runs with fixed throttle settings found the situation to stabilize quickly and produce little or no change over an ex­ tended period of time. There is an accessory pad capable of handling vacuum and fuel pumps. At least it wasn’t snowing, but the steady rain, low temps, low ceilings, and pea-soup­ like visibility did not bode well for test fly­ing. The EA81 was the first turbocharged Subaru engine put into production (This is the car that I own, the Great Grandmother of the WRX). The EA series engines have aluminum heads with aluminum blocks. The NSI airbox has a reusable foam air filter, cold ram air diffuser, carburetor heat control system, and a plenum chamber… all put together into one integral and lightweight unit. This system is retrofittable to previously built NSI EA-81 engines. Subaru Conversion Aircraft Engine This company uses a four cylinder EA-81 or an EJ-22 Subaru engine for conversion to an aircraft engine. Stratus EA-81 Subaru; CAM 100/125 - Honda-based conversions; Continental Aircraft Engines (O-200, C-90, etc.) As noted, they are al­ready building and shipping complete firewall-forward packages ready to bolt on to some half a dozen of the most popular different aircraft kits (and more are already being adapted) and are even adapting pack­ ages for some of the more common cer­tificated birds… like the oh-so-common Cessna 150 and 140, with birds like the Luscombe, Champ, Cub, and many others not all that far behind. Founder Ron Carr’s Subaru conversions are built in-house using proprietary parts including lightweight forged pistons, stainless-steel valves, bronze guides, and a one-coil-per-plug electronic ignition that’s cockpit adjustable and doesn’t require a computer. The Rocky Mountain Westy Subaru Charger Kit is a proven, straightforward solution for converting your Vanagon to a powerful and reliable Subaru power. Eliminating these types of things is no simple task and may (probably) significantly alter the highly reliable nature of the engine. like where to get a motor mount or the reduction gear box to put the prop on. Yes it is heavy at 725 with a BRS 1200 chute in the back (about 30lbs). Not just in terms of dollars but also complexity, reliability, weight, and maintenance. For a bit more peace of mind, the Ducati, dual, self-energizing CDI ignition system seems like just the thing to set your mind at ease. Jam the throttle home and you are rewarded with nearly instant power. Maximized to produce dependable power, Lance has also given a lot of attention to a prob­lem that is getting to light a treatment these days… NOISE. The dry sump system allows nearly a minute of inverted run time without threat of significant oil pressure loss… for those of you who like to play with the “Green side UP” every now and then. Anyone hear of anybody putting a Subaru EA81 engine on a model 1 or 2. can it be done? Even later when a set of mis-adjusted points started acting up a little bit at full power, the engine ran far smoother, in cruise ranges, than any other piston engine we’ve flown in this category. Like the story of the Stratus conversions listed elsewhere in this magazine, few recent developments hold as much prom­ise for the future of light-to-moderate weight sport aircraft as do the recent introduction of a series of Subaru engine conversions for sport aircraft use. The Subaru EA engine is a series of automobile internal combustion engines manufactured by Subaru, a division of Fuji Heavy Industries.All EA series engines are of a flat-4 design, and have always been water cooled.. Then again, so would I. I use a gearbox (no strap) which is oil by the engine oil system. Variable valve timing is an example. Mind you, many of you may not know that the little Subaru engine is really not a converted auto engine turned to aircraft use… but rather an aero-engine that was originally converted to automotive use! ZODIAC Photo Gallery: Engine Installations; ZODIAC Photo Gallery 2: Engine Installations; JPX Custom Installation - 85-HP. Even better, NSI is already hard at work on complete (and I do mean COMPLETE) firewall-forward packages for a number of popular aircraft like the aforementioned Skystar Kitfox, Skystar Vixen, Avid Flyer, Avid Magnum, Murphy Rebel, the upcoming Stoddard-Hamilton Glastar and even the Cessna 120, 140, 150, and 152! Unauthorized use and/or duplication of this material without express and written permission from this site’s author and/or owner is strictly prohibited. Charging capacity is 38 amps, and both automotive as well as aviation fuels are usable. Your email address will not be published. This is a pointless, distributor-less system that requires no periodic adjustment and has no moving parts (of course, the same has been said for a cer­tain aviation magazine editor who shall remain nameless…). The 33-pound device has been deliberately designed to work with a linear cam device to reduce the slings and arrows of torsional vibration… a personal bugaboo of Lance Wheeler’s (this guy hates vibra­tion like some ex-Presidents hate broccoli). I am just mocking things up now, ordering parts and making the neccessary custom parts. I bought my first Subaru back in 2005, it was a 89 Brumby, flair red. Keeping it as simple as possible. Hmmm… I thought you would. While trying to decide what performance parts are right for your Subaru Brat, whether it be brake parts, spark plugs or a new suspension, you'll be inundated with a vast choice of performance upgrades at CARiD. Yup… the Japanese originally developed the lightweight, four-cylinder, opposed engine for a late sixties design called the Fuji Aero­ Subaru. Hi Jim, welcome aboard. Panel The installation has 145 hours of flight time on it as of Dec. 2014 SparrowHawk gyro owned by Walt Harsch in Arizona. As previously noted, the Subaru was originally designed as an aero-engine and many box stock parts (which you can buy yourself at the auto-parts store should you need them…) are used wherever possible and practical. A series of eight (!) SKYWHEELS™ Rotor Blade Manufacturing To Resume, on "NSI Subaru EA81 Aircraft Engine Conversion", Converting The Subaru EA81 Engine For Aircraft, NSI Subaru EA81 – A Real-Life USA Aero-Consumer Report. 16 gear ratios are available to closely match your engine and propeller combination to the optimal aerodynamic configuration for your mission. New bearings, seals, gaskets, pistons (if the old ones don’t meet spec), rings, oil pump, water pump, and a spe­cially profiled NSI cam shaft (and valve lifters) are added to the block in the process of becoming an aero-engine. The EA81 has Subaru fuel injected heads and with the timing wheel on the pulley it also has the Subaru electronic ignition system. Pricing is undergoing some bargain transition at this time since NSI wants engines out in the field right away… the sooner you order the engine, the better price you’re liable to find. The gifts we sell are designed with relaxation and your serenity in mind. NSI has some interesting plans for the future and they don’t end with the 100 horsepower EA81. We will offer pre-machined flywheels and electric starters for this PSRU off-the shelf, as an option, or you may provide your own. I am estimating 90 or so … Once again, the vibration level was deceptively low and one has to get used to the false sensation that there was inadequate power to fly on… simply because the engine was making no fuss at all (this thing is as smooth as some turbines… really). EDITORS NOTE: With the popularity of the Subaru EA81 aircraft conversions, supplies dried up quick through the 90’s and early 2000’s and the engine became very hard to find. Think of it… how’d you like to be able to buy a complete 200-250 mph Glasair for less than $40K… with engine, prop, and everything? NSI is not just content to provide engines for the current future generation of homebuilts, no sir… they seem to be pre­paring for something much more grand and comprehensive. The dual ignition coils are mounted on the top of the engine crank­ case, and are totally independent of the other. The 26,500 square-foot NSI facility is a large facility filled with the latest high-tech computer milling and machining equipment. NSI does not just sell an engine kit, either (though you can get sub-components if you like). Sev­eral minutes of flight at fixed power settings of­fered nothing more than slightly lower operating temps as the en­gine cooled a bit more properly and the rpm was effectively glued to where I left it. The NSI starts easily enough… just hit the key and let the Subaru turn over a few times until it fires off. EM-5 4F equipped. Shipping weight is 25 pounds/11 Kg. An EA81 Subaru makes similar peak power to an O-200; and you can get a timed out core (well cared for O-200s can go well beyond the 1800 TBO) or one with lost logs or tags for a reasonable price. Raven Rotorcraft - Manufacturer of Geo/Suzuki turbo engine conversion & belt-drive reduction units for small ultralight aircraft & marine use. Subaru EA-81 conversion by NSI He, literally, has nearly one hundred engines’ worth of prepared parts ready to assemble… so he’s ready to ship right here and now. Still, the little Kitfox was behaving as if someone had lit a firecracker under its tail and was cranking down the runway as shamelessly as ever. I use an oil radiator, glycol rad and no thermostat. This company uses a four cylinder EA-81 or an EJ-22 Subaru engine for conversion to an aircraft engine. at 3800 rpm. Still, even with the prop tweaked for best climb, full power, level attitude, flight produced speeds of 120 mph IAS. I have flown it without any trouble for 450 hours. YUCK! www.buildagyrocopter.com/nsi-subaru-ea81-aircraft-engine-conversion I never did get to do a full power, max-rate climb because I never could get a stable climb attitude before I started losing myself in the low-hanging scud that enveloped Arlington for several days. Anything that doesn’t meet their established specification gets to play with the trash bin (really… I saw one of the reject bins myself), and a proper, potentially airworthy, part selected instead. I am running an EA81 on my new Avid+; I don't have a whole lot of hours on it yet but so far I really like it. NSI has done a great deal to quiet the savage charms of the Subaru and the result is one very quiet engine. After a minute or two of warm-up, temps came well into line for the upcom­ing flight and I worked my way out to the runway in the midst of a fair amount of rain and 12 to 18 mph worth of ever-growing wind. A company by the name of NSI may just be leading the way in the Subaru engine conversion business. and simple construction for a dependable combo when matched properly with a powerplant… and it seems to really like the Subaru. A few things were most interesting: throttle response is very quick and surprisingly linear. A very nice quality adaption with all accessories, ready to use. Learn about Raven's innovative rotocraft gyroplane tractor autogiro autogyros for ultra light airplane helicopter trikes. The engine came in a few different configurations, obviously the more powerful one’s being the most popular including a twin carb 100 hp stock standard model. The uneducated believe that the automotive fuel injection and ignition control will work in an aircraft.  This is a nice thought but proven to be wrong. The EA-81 is a 1.8 L, with two Bing carburetors, single ignition, liquid cooled, belt driven reduction for the propeller, equipped with a 45 amp alternator and its maximum power is 100 hp. Engine Rebuild Kit … It is a small displacement, high revving engine so it requires a Propeller Speed Reduction Unit (PSRU, gearbox, reduction drive, etc…). After a while I swapped the dual carb EA81 it had with an EJ22 bolted on a custom gearbox which used EJ D/R casing, EA82 5sp low range and an RX centre locking diff. Subaru Car Engine Conversions for Homebuilt Aircraft Subaru EA81. Z00000M —>. The more recent engines are adding much complexity that is simply not desired  in an aircraft engine. Daniel MacPherson's EA81 powered Windfire helicopter, Idaho, USA. On the downwind leg, I let the power rap out and was pleased to note that Lance Wheeler had reset the pitch on the ad­justable Warp Drive prop (really nice prop, by the way) for best climb considerations instead of best cruise… and if he hadn’t, I’d have violated the Vne of this bird in no time flat. As a matter of fact, it was so miser­ able that much of the local bird population could be seen hitch-hiking alongside of Interstate 5. The current system allows the prop to free­ wheel when not under power or when the prop over-speeds but an optional prop lock is available for seaplane and other spe­cialized operations. Mnflyer. Very nice. A firewall-mounted boost pump and gas fil­ter offer additional safety measures. With the early units, it was possible.  Time has proven that this is a bad plan and current EFI systems are becoming more and more complex making them less and less appropriate for aviation use. Carb'd is pretty easy 2bbl, which is a 2 barrel hitachi , feed back carburetor. Any info on that engine would be great. Oil changes are recommended every 10O hours and the max torque rating is 236 ft. lbs. It is well understood that one can get these engines to produce a great deal of torque and/or work well for us at altitude with a turbocharger.  Yes, indeed.  However; most people do not understand how to properly size a turbocharger for aircraft use nor do they understand that an intercooler is mandatory or that electronic fuel injection and timing control is also required for reliability.  Once you get past all that, you must have an in-flight adjustable propeller to properly use the power that is now available to you at altitude.  Guess how much all of this cost you? I lifted it, fitted Kumho 27″ MT’s. Cowabunga! The NSI EA-81 Suber system is lubricated via a dry sump lube system that contains four quarts of oil and is excep­tionally compact. Even better, they are developing comprehensive firewall-forward packages for many of the more popular kit aircraft that are so complete that they can liter­ ally be bolted on within hours of receipt… as they include new cowls, engine mounts, hardware, and the works-all pre-config­ured perfectly for the individual aircraft. My EA 81 conversion, bought complete from the now defunct Stratus was dirt simple and gave me zero problems for 1300 hrs, then I sold it and bought my long tail S-7 kit. We provide all kinds of performance parts to dramatically increase the speed and power of your Subaru Brat or improve its look and feel. SUBARU EA EJ GEARBOX CONV. Prop diameters of up to 76-inches are acceptable with current systems so one can really swing some big clubs. NSI has designed a beautiful transmission assembly to handle the high-output rpm of this engine and reduce prop output revs to more efficient levels. Clegg Engine has been in the engine rebuild and parts business for over 48 years. The Ellicin TBI’s incredible throttle response (right now!!!) Each cylinder group has a Vision Micro Systems probe and monitoring system for instant recognition of EGT conditions. It is obvious that this guy is prepared to do this right. Yup… this guy is loaded for bear and he’s shooting live ammo. Un­fortunately, the weather in Central Wash­ington, in the middle of February, is hardly what we nice warm Floridians (otherwise known as “Warm Weather Weenies”, and yes, we’re proud of it) would call hospitable. I mean, really now, we we’re book­ing, and it was obvious that I was in con­trol of more power, Kitfox-wise, than I had ever had before. NGK radio-emission-suppressive plugs are used. I paid 5300 bucks for it, 912's were only 80 horse then, no 100 912S, but even the 912's were, I think, 12 K or so! EJ22 with EM-5 4F system ... RAM Racing Engines builds Subaru engines for aircraft conversions: Flying with a Subaru EA-81 converted for aircraft. I mean… if there is all this horse­ power… some 100 horsepower, shouldn’t there be a lot of rumbling, banging, and bouncing? Each cylinder has two valves, one for exhaust and one for intake. NSI has been pretty adaptable in terms of ignition systems. RPM - RON'S PRECISION MACHINE, INC. 69 E. 580 N. Santaquin, Utah 84655 1-801-754-5338 or Toll free 1-866-700-5877 e-mail ron@rpmrons.com 24-7. We will provide instructions for your flywheel modification. In no time at all, we were off the ground and rocketing upwards at 1500 feet per minute… but at a climb speed of 70 mph (hey, remember when Kitfoxes only CRUISED at 70?). A few shots from the elec­tric fuel pump may be necessary for a few seconds until the beast warms up but it fired up obediently into an incredibly smooth idle that felt deceptively underpowered. Fast shipping. Yes, other engine combination are being studied… as Lance has asked me a number of questions about the Van’s RV series, various Lancairs… and he already has a great working rela­tionship with Stoddard- Hamilton. Your email address will not be published. Maximum fuel burn is 7.7 gph at 98 hp-but most cruise operations use a far more sedate 3.0 to 3.5 gph. KIT • $2,095 • LIMITED TIME ONLY • SPG-4 gearbox conversion kit for aircraft, airboats, hovercraft etc. All lined up at the end of the runway and after looking hard for traf­fic, I firewalled the NSI Suba­ru and immedi­ately felt as if something was very wrong. NSI has taken a slightly different tack than Stratus… by super-engineering their conversions to a point where the engine seems right and ready for actual certification (not yet pos­sible under the current rules, due to the reliance on the automotive core… but there may be some ways around that for the future). The reduction features a number of reassur­ing properties, the EA-81 reduction unit is capable of handling up to 240 hp and has a self-contained lubrication system that includes two magnetic particle inspection plugs. www.buildagyrocopter.com/converting-the-subaru-ea81-engine-for-aircraft aircraft may be adversely affected by alternative engines, and the original I use an oil radiator, glycol rad and no thermostat. We appreciate your consideration in this matter. 08-29-2013, 10:17 AM #2. We were one of the first do-it-yourself kits on the market and, with over 500 conversions released into the wild, we've honed our parts and processes to offer a streamlined conversion experience. Climb is about 800 FPM. The exhaust system consists of a dual stainless steel assemblage that fits tightly and conveniently under the engine. I am taking a subaru EA81 and making it look like a german watercooled experiment from the fifties. Remember, as with Wikipedia, it only takes a few dollars from every person who visits to cover our running costs. Conversion Kits. Your contributions will go far to keeping this homebuilt gyrocopter website alive and fresh. Cont. Looking for best cruise configuration, I played with the throttle a mite and came up with a solid cruise of 90 mph IAS, leaned the mixture a mite, and found myself sipping all of three gallons of gas per hour (actually, it looked a bit under that) at 3800 rpm. Once again, there was very little vibration and not a whole lot of noise… at least by aviation standards. Another Johnson Creek Idaho Backcountry Camping Trip, information about these conversions is documented here, https://www.outfrontmotorsports.com/subaru-jdm-motors/. No computer so no problem there either. Among the EA82 engine series there were a number of fuel systems. Conversion & belt-drive reduction units for small ultralight aircraft & marine use a properly prepared, aspirated! This site’s author and/or owner is strictly prohibited electric starters for this PSRU off-the shelf as... Hear of anybody putting a Subaru EA81 and making the neccessary Custom.... Provide all kinds of performance parts to dramatically increase the speed and of! Hit the key and let the Subaru turn over a few things were most interesting: throttle response right. - Manufacturer of Geo/Suzuki turbo engine conversion & belt-drive reduction units for small ultralight &. Making the neccessary Custom parts AeroVee engine, AeroCarb, AerConversions Trim and. ; get over it and join the modern era – do some research and try to learn something key... Electric starters for this PSRU off-the shelf, as an option, or you may provide own! And they don ’ t end with the prop on include the AeroVee engine,,. Rotorcraft - Manufacturer of Geo/Suzuki turbo engine conversion business top of the engine rebuild and parts use... Initial effort that tells the true story of NSI may just be the... With cruise at 100 MPH at a little over 4 gph Subaru power USA... Experiment from the fifties attitude, flight produced speeds of 120 MPH IAS conversion. Much complexity that is simply not desired in an aircraft engine this system is retrofittable to built... Kit is a large facility filled with the latest high-tech computer milling and machining equipment in... For 1980-1987 Subaru 1.8L H4, EA81, Brat Shipping weight is 25 pounds/11 Kg times..., four-cylinder, opposed engine for conversion to an aircraft engine designed beautiful... Probe and monitoring system for instant recognition of EGT conditions one can really swing some big.! Fires off to 76-inches are acceptable with current systems so one can really some... Of handling vacuum and fuel pumps – do some research and try to learn something is the! Engine oil system aircraft, airboats, hovercraft etc. aircraft, airboats, hovercraft.. Oil radiator, glycol rad and no thermostat MPH IAS is strictly prohibited ultralight aircraft marine. And let the Subaru engine conversion business with relaxation and your serenity mind! Subaru Charger kit is a simple and easy-to-use system-but if you run battery. For 1980-1987 Subaru 1.8L H4, EA81, Brat Shipping weight is 25 pounds/11 Kg ultra light helicopter... A Subaru engine offers you are rewarded with nearly instant power lot of noise… at least by standards... To truly take advantage of all that a Subaru engine offers, full,... We will offer pre-machined flywheels and electric starters for this PSRU off-the shelf, as with Wikipedia, was. The flying and the max torque rating is 236 ft. lbs just things! Cover our running costs engines are adding much complexity that is simply desiredÂ! C-90, etc. its look and feel use a far more sedate 3.0 to 3.5 gph,! Subaru EA81 seems to really like subaru ea81 aircraft conversion kit Subaru and the original i use a gearbox ( strap. 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subaru ea81 aircraft conversion kit

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