legacycentral bbs

Does anyone have a picture of what the torque and power curves really look like on the na legacys?

i had one somewhere when i dynoed my n/a leg, i doubt i have it anymore though

MK

When I get my awd & mt swap done, I'm planning to have it dyno'd....just to have a baseline to play with....that prob wouldn't be till sept, or possibly oct time frame.

Figure around 77awhp.

Anyway my numbers were:
1)102hp@4750 114.7ft-lb@4250
2)103.4hp@4725 117.5ft-lb@4250
3)105.0hp@5450 115.4ft-lb@4200
(FWD 4EAT n/a ej22)

From a post i made awhile ago, i really wish i coudl find the paper. I forget what type of dyno that was on, as they vary WIDELY between types.

MK

I find 77 very hard to believe.

cool though, thanks mike

Zombie apocalypse - the dead rise again!

Does anyone have an unmodded N/A graph?

I'm thinking an EE20 will be a little ways away to get for my Dragonfly project, but an N/A EJ22 is easy. I want to be able to plug in some numbers to see what I'd be looking at for mileage. Plugging in the numbers for BMWs 2.0 diesel (the only dyno chart I can get that's close), I'm conservatively looking at over 70 mpg @ 75 mph (yes, it would come close to X-Prize Prototype category eligibility as that brings about 95mpg @ 60mph where 110mpg is required for diesel). Depending on what the gas engine looks like, I might revisit my options or at least try to plan the build with a later diesel swap in mind. I'd like to be able to get this thing rolling ASAP as too much of my life is waiting for shit to catch up.

Have you considered a direct injection engine? No more cost effective, but could prolly get you into some real high milage numbers with stratisfied injection and all.

That would be a diesel . I want the low cg of the boxer and a cheap engine I can (physically) easily swap later. I also don't like inlines in general and a direct injection engine would probably cost the same as the BMW diesel I would pick were the Subaru not available. I also like the idea of a boxer 4 since that's what the aircraft originally used and I'd like to see how many idiots ask me if it's a flying car.

I found a mildlly modified N/A dyno chart and once again, BSFC formulas don't reflect the real world with gas engines. The supposed loss of efficiency at part throttle is WAY too prominent a factor in the calculations since I can plug in known cars and the formula results in far less than half the real world mileage. My car gets 14 where it would average double that over a tank of mixed driving and so likely gets a good deal higher real mileage than just double the calculated prediction. I also found the diesel to be on the conservative side, but not far off. So I'm kind of thinking the more efficient BSFC number that reflects full throttle is closer to real-world cruise numbers as it also comes close to my best guess of about 60 mpg @ 67 mph (though that may or may not be on the higher side as I was thinking closer to 50). If I use the part-throttle efficiency numbers I end up with 30 mpg and that's nearly what the original Legacy got with a larger frontal area and a cd of ~.34 compared to the .18-.20 I'm estimating for my calculations.

So in the end, I'm probably just as well off guessing unless I had IDC at part throttle/rpm for the specific engines.