subaru ej 20t

[asra]

Hi Guyswatching the posts and such what are the pro's and con's of using the subaru 2.0 litre turbo motor thanks markMark

[Brian]

Check how hot the turbo is going to make the motor run. After having a factory turbo fuel injected EA 81 and having continual problems with cracked /warped heads and other assorted problems I would be very wary about tackling another turboed motor!!Brian

[asra]

BrianI was wondering what computer you were using and if you did any tuning to try to rectify it. thanks MarkMark

[asra]

Mark as Brian said YOU GOT TO LOVE TURBOS IF YOUR GONA PLAY WITH EM & seeing as I can build an EA81 that will fly an Owen sxs fully enclosed happily @ 4000rpm with max @ 5100 using 72" warp @ 14deg & 2.2-1 reduction this will also fly at 65kntWhy would you want 200hp & what are you going to do with the extra 80hp you dont need Butch

[Brian]

Mark, I use the Wolf computer, pretty rugged and hasnt given any trouble !!Brian

[asra]

Thanks Butch and you too Brian, I had a guy I know offer me an ej 20t and wolf 3d still in the car for $2800, the car is junk but it has an intercooler and apparently it has all been tuned for the car etcMark

[asra]

Good price wrong motor Butch

[NiqueNaque]

Hmmm,Speed is my friend... more horsepower = more speed.It'll be easier to get into the pooh with a big motor when you are inexperienced, but when you are experienced they are well worth it to get you out of the pooh, especially when you develop some flying talent, like I haven't yet.Cheers,Nick.

[asra]

Nick More power when it's running,just more wheight draging you to earth when it's notButch

[NiqueNaque]

Steve,Its unavoidable, gravity does suck. You could look at the aspect of more power to keep you up there when it is running, which theoretically should be most of the time... however, if you have an engine out you just do the same old thing, aviate, navigate, communicate, pick your spot and land [hopefully on your wheels].Maybe you could enlighten us:A larger engine with turbo boost - will it work less than the EA 81 and thus be a longer life proposition?What is the order of extra weight - are we talking 10 - 20 - 30 kgs?Any extra weight of course will result in extra fuel consumption - an idea of which is if you increase your take off weight (TOW) by 10% you increase your fuel consumption by about 21% (ie, 1.1 x 1.1 = 1.21) due to the square law curve for lift and drag. To offset this will an EJ20 with engine management deliver better efficiency than an EA 81 with a carb?Could you, with the appropriate pitched prop and redrive, have a very much larger diameter prop and thereby obtain much greater aerodynamic efficiency from the prop and so deliver a more economical machine? EG, the engine works at say 3500 RPM with boost but is turning an 80" prop runnning at 1800 RPM which an EA 81 might not be able to deliver.And the final crunchy question, cost... cost to overhaul, cost to run, cost to install. Worth of investigation in this one too is - the car is a wreck - is has the engine been damaged through either neglect or collision for the car to have ended up in the state that it is?? We had one prop strike at HVGC which ended up requiring the replacement of a block / crank, prop and gearbox gizzards in one incident, will this engine be similarly affected?We'll look forward to some ideas and experience on this one...Cheers,Nick.

[asra]

To all EJ20 turbos are all dohc the heads wheigh twice a much as EJ22 sohc heads now add wheight of turbo & accesorrys needed to run it bigger radiator oil cooler manifolds heavier reduction ect 6-12kg min it puts EA81 - EJ20 diference somwhere in the range of 38-40kg.You may not need bigger rotors to get off the strip but ths extra whight must make for much steeper glide [plumit] with no power. If I was intrested in turbos I would start with a BMW R1100S engine 72kg with reduction & all ansilerys then add turbo/ or EA71-81 butch

[asra]

Butch, I like the latest Subaru SOHC fuel injected engines. The ej-20 @ 134 hp and the ej-25 @ 167 hp. I have never needed to, but a very slight cam grind will add 30 hp to these figures.My preference for my lead sleds, ie.(cross country touring machines, and property air utes with Bundy stickers on the back window!!) that I am putting in the Firebirds, is the SOHC ej-25 @ 167 hp. I am running the power through the Autoflight 2.47 to 1 PRSU driving a 76" patroney, or 2 blade timber prop.Aussie Paul. []www.firebirdgyros.com

[asra]

PaulThe EJ25 SOHC is the pick of subaru motors bit expensive on a $$ to hp ratio compaired to EJ22 but should allow cruise at 3850rpm at 40-50knos Buch

[birdy]

just outa interest Paul, how many KGs in the ej25 and all the extras??[ compleat flyn unit in other words]Ignorance is bliss............but only till you realise you were.You can always get the answer you want, if you ask enough experts.

[asra]

The motor in question is a low km import that was put in an early wagan circa ea81 and has been sitting for a couple of years, the owner is in Timor and wants too offload it, the body is rusty thats why its a wreck.Maybe it would get a sparrowhawk of the ground or drive half a dozen ducted fans[]Just a question to all about ea81 and later 2.2 and 2.5 when does the fuel injection,power and weight of the later motors, become better than the lighter weight and simplicity of the ea81 - if your too poor to afford a rotax - before one is suggested by anyone[]Mark