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DOHC EA82 (Aviation)


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17 replies to this topic

#1 TheLoyale

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Posted 04 September 2012 - 10:30 PM

So, JesZek posted this video link in his "BumbleBeast" thread. This is the first time I have seen this, and I started to ask my self, how come no one ever really tries to build up an EA82 with hop-ups like this? Apparently stuff is available to a degree. The DOHC heads must be machined much much better than the stock EA82 heads (Gen-I, Gen-II, Gen-III)

I wonder, roughly, how much money this guy stuck into this EA82? I have never seen anyone really build up an EA82 and run it in a car, everyone goes the EJ route (Which is fine and dandy) but a custom DOHC EA82 would be novel in a EA81/EA82 chassis.



Feel free to comment, post questions or thoughts on this topic. DO NOT let this turn into another Flame war over the long debated "EJ swap it" method.

Cheers!

#2 Subruise

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Posted 04 September 2012 - 10:39 PM

those are really really really expensive. aviation guys dont blink at 15-20k for a motor. RAM engines makes that stuff. hella dough, and worth every penny ill bet. whatcha gonna do when ya break it though? (think, '' i didna think it was that deep") lol.....:popcorn:

#3 Crazyeights

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Posted 04 September 2012 - 10:43 PM

I watched this a while back and it grabbed my attention as well. I can't imagine the amount of work that went in to making this happen. In addition to the custom made heads, it looks like port fuel injection. I can't tell from the video what the ignition system is, and it must be stand alone engine management of some sort? Not to mention the custom timing belt/idler work, on and on. I wonder what the power output is over stock.

#4 WoodsWagon

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Posted 04 September 2012 - 11:40 PM

DO NOT let this turn into another Flame war over the long debated "EJ swap it" method.

I looked through the other videos he had uploaded and found this:

This is a normally aspirated Subaru EJ 2 Litre engine mounted in a two seat Dominator Gyrocopter.
This is the first time running with this engine. Previously it had an experimental double overhead cam engine.

Sorry, sounds like even they EJ swapped it.

Sad ending to the story is the pilot ended up dieing in a crash with that autogyro.

Cool heads though. I wonder if they modified some existing 4cyl castings with the same bore center or if they poured their own? Would be neat to find out more info on how it was done.
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Edited by WoodsWagon, 04 September 2012 - 11:46 PM.


#5 Loyale 2.7 Turbo

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Posted 05 September 2012 - 08:54 AM

Twin Spark means it uses a couple of SparkPlugs for each cylinder... interesting!

So, JesZek posted this video link in his "BumbleBeast" thread. ...


Yes, and way before on the "Strange & Weird Subaru Stuff" Thread... along this:


RAM Engines, the company that Modify Subaru Boxer Engines to use in Light Airplanes, is Back!


Now they not only does EA81's


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But they Have a Modified EA82 too!


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And also a 2.3L engine, based en the EJ22!


Look Here: http://www.ramengines.com/




It will be Nice to Drive a Subie with a DOHC Twin Spark EA82... :burnout:

Kind Regards.


#6 grossgary

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Posted 05 September 2012 - 12:43 PM

they do some neat stuff, i've met those guys.

they showed me their conversion of EA81 heads (i think that's what it was, i've never gotten into EA81's) from single port heads to dual port heads. cool looking at a bunch of heads cut at various places into pieces to inspect the ports and passages. they have a lot of time, research, parts, and equipment into what they do, so the costs are going to represent that.

#7 iceageg

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Posted 05 September 2012 - 02:06 PM

Twin Spark means it uses a couple of SparkPlugs for each cylinder... interesting!


Pretty much all aircraft engines both certified and experimental run two full ignition systems primarily for reduntant emergency purposes but two sparks have other benefits too. At least one of the two ignition systems is usually a magnito which continues to provide its own spark in the event of electrical failure.

And Subruise is correct. Anything that goes on an airplane is painfully expensive. 15-20k for a motor will usually only get you a powerplant for experimental use only that is in a box on the floor, uninstalled. Testing and insurance are prohibitivly expensive and the cost of the certification process is staggering. But the people determined enough to be in that industry do come up with some fantastic stuff!

#8 Loyale 2.7 Turbo

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Posted 20 January 2013 - 09:16 PM

The Creator of those DOHC Heads (16 Valves) for the Subaru EA82 engine, Mr. Neil Hintz, from AutoFlight, does not answer his e-Mails... I tried to contact him (also another USMB Members), asking info about those heads, the timin' belts he used, if they could be suitable to be used in a car; etc... Nothing.

I've spent many, many hours reading his threads in Gyrocopter forums, and beside learning info about those, I collected these photos of the DOHC EA82 engine, which he named as: "AutoFlight 140N" due to its Easy 140 Hp it Develops:

Edited by Loyale 2.7 Turbo, 20 January 2013 - 09:21 PM.


#9 Loyale 2.7 Turbo

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Posted 20 January 2013 - 09:19 PM

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#10 NickNakorn

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Posted 21 January 2013 - 05:43 PM

Hence my comments on the other thread 'is it worth it'.

Ram seem to be very good value for money. I like their EA82 modified long block:

http://www.ramengines.com/id17.html

#11 Subruise

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Posted 21 January 2013 - 06:37 PM

if i was gonna drop 3k on a ea82, id save up another G and get the ej:Flame:

#12 Loyale 2.7 Turbo

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Posted 30 November 2015 - 11:06 PM

Tom0 shared ~► Here, a web link which Really is worth to be Shared in this thread, there you can see a 1985 Subaru Leone Rally Car, whose EA82 engine received the DOHC Twin Spark 16 Valves' Heads made in New Zealand by AutoFlight; but they added a Turbo to the Mix, and despite of being an unfinished project, it worth to be shared here:

 

DOHC%20RALLY%20EA82.jpg

 

Here is the Web Link mentioned above: ~► http://www.trademe.c...n-990956057.htm

 

 



#13 Loyale 2.7 Turbo

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Posted 30 November 2015 - 11:06 PM

Those DOHC heads for the EA82 were made in New Zealand by AutoFlight, and were previously pictured on my "BumbleBeast" thread, years ago, you can find more info, more Photos and even a Video of a Working DOHC EA82 on the Following link:

 

~► http://www.ultimates...-2#entry1115736

 

Kind Regards.



#14 Loyale 2.7 Turbo

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Posted 01 December 2015 - 04:19 PM

Here is another, Original EA82 Rally Car, for sale:

~►
http://page15.auctio...tion/t454709490

Kind Regards.



#15 crazyhorse001

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Posted 04 December 2015 - 12:30 PM

Any idea of production numbers of those DOHC heads? Did any make it to america?
Those look museum quality! :)
They'd look sweet in my XT GL *evil grin*

#16 Tom0

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Posted 04 December 2015 - 07:55 PM

Haven't heard of any, but most likely is. aviation stuff tends to cross borders pretty easily. Not sure if the company is still supplying information about them for belts, set up etc.



#17 subarubrat

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Posted 04 December 2015 - 07:58 PM

As a pilot I have always favored aeronautical engines over automotive conversions, both my planes are powered by aeronautical engines (O-200 and an IO-360) and I think the overwhelming evidence is that automotive engine conversions just don't have the reliability of aviation specific engines. That said, the only automotive engine I would feel safe flying with is an EA81, it has a very simple and strong rotating mass and valvetrain that is under very little stress. The EA82 is just too complex and delicate compared to the EA81 for what is needed in an aviation power plant.



#18 Loyale 2.7 Turbo

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Posted 05 December 2015 - 08:38 PM

Any idea of production numbers of those DOHC heads? ...

 

As far as I know, the designer had an accident while testing one of the gyrocopters, I'm not sure if it was DOHC EA82 powered, but production run might be pretty short ... and yes, they look very interesting, worth to save an EA82 DOHC converted engine, on a Museum.

 

 

... the only automotive engine I would feel safe flying with is an EA81 ...

 

I agree, I dislike timing Belts... in a car, the worst that could Happen is that your car left you stranded in the Middle of Nowhere if a timing belt fails... now think about the same fail happening, but in the middle of the atmosphere ... :o ...

Kind Regards.






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