legacycentral bbs

Well, went to the dyno yesterday.

I put out the most total power of any SOHC engine there, but there weren't that many there anyway. The best part, was putting out more torque than a few of the EVO's. That's right.

The total damage is as follows.

At 16psi, WITH Cat, I put down 214whp at 5250RPM. I made 251lb-ft at 3200 RPM.

Now, I WAS expecting more horsepower to the wheels, but I never expected THAT much torque. I made more than 200lb-ft from 2800RPM until 5500RPM. Pretty decent.

However, the news that everyone was curious about.

Yes, I was running lean. In fact, I never got more rich than 11.5:1. It leveled out at about 13:1 from 5000RPM to 6500. Pretty lean, and that's apparent in the curve.

It was right around 14:1 at peak torque.

I did 3 pulls, and oddly enough, my numbers got larger with every run. I was pretty nervous, and there were about 60 people watching. My IC temp was about 125 after the 2nd pull.

I did the first 2 runs consecutively, one directly after the other. First run, I put down 205whp and 246lb-ft. Second run, I put down 209, and 248. We waited about 10 minutes and sprayed down the IC just breifly. Pulled again, and BAM, 214 and 251.

Some of the EVO's put down 280whp and 245lb-ft, a poorly tuned Stage4 WRX put down like 214hp and 212tq. My friends VF22 powered Stage4 WRX was running off-the-charts rich, and put down 260whp and 258lb-ft.

I am certaintly impressed with the torque, I mean, that is a shit load of torque. Kinda bummed about the hp, but I was running lean, and the graphs show that. I cannot believe the torque though. That is some righteous torque.

Now for the pictures...

Here is part of the crowd. About 1/2 the people who were standing there for my first run.







One video: Right click, save as.

http://www.thawa.net/bac52/Dyno%20Day/M ... 0video.AVI

Another video: Same deal.

http://www.thawa.net/bac52/Dyno%20Day/M ... video2.AVI

I will have more video when I get it from my friend.

The car sounds pretty gnarly, probably one of the better sounding cars there.

Highest numbers I saw all day was 303whp from an Evo. There were 2 or 3 EVO MR's there, but not a single STi wanted to run.

I was scared I'd put out the lowest numbers, but I managed to do OK.

Cool, that's pretty neat Phil. So this is basically what the rest of us can expect if we have a similar setup as you. What did those WRX guys think of your performance?

Awesome!


So witha 20% drivetrain loss, you are putting out about 265-275 chp. Cool!

I got a lot of "holy shit" remarks at the torque of the car. Lots of props, for sure. I was trying to be humble, but I was STOKED. I, natually, wanted to know how much horsepower AND torque people were making, and so when I would ask about torque, everyone was like "you won't win HP, but you'll own torque!"

I also got a lot of 'how many miles again?' comments.

I don't know if others can expect the same power. It all depends on the current state of the car. If your engine is blowing smoke or oil, your probably not going to do the same.

I think this is about the maximum that our stock heads can be pushed though without modding. Head work would give a lot more top end.

Let me just add one more "holy shit" remark. Holy shit that's a lot of torque!

I would sure hope that if someone had a car that was blowing smoke they would refrain from trying for your torque\hp stats. Speaking for myself, I don't have any smoke coming out.

Damn, thems aint bad numbers. Horsepower would probably go up a bunch with an exhaust. And godda love dyno vids. I hook my laptop up to the surround sound so all my neighbors can enjoy too

I have an exhaust... A CES 3" with their downpipe. Lol, does that sound like a stock exhaust?


I think I'm just maxing out the heads. From intake to exhaust, I've got some very minimal restriction. I wouldn't run a big turbo on a stock exhaust, lol.

Ahh, thats why my jaw hit the floor when I saw those numbers, I suppose I should pay attention more often. So your exhaust has a cat?

jawesome, just get the chart up

I have 1, high flow cat. I was gonna run catless, but it was shitty weather when I was going to swap, so I just never did. I'm lazy, lol.

Not bad numbers, its kinda strange the hp is down low but the torque is high. what kind of dyno was it?

Sweet Phil! That's pretty cool. That's some good torque there buddy.

Dynojet. I was running out of gas, and reaching the limits of the heads, for sure.

I can even feel that the car doesn't pull as hard up top, as I know it could. It holds boost, and no less than 180whp after the peak, but still feels like it's tapering off.

I really don't think the stock heads can flow any more than 230 to 250whp, before they will require headwork. Even if you had the fuel, I think you just cannot flow enough.

Thanks Matt! I am still kind of in awe.

The car is fast, no question about that. Easily in the mid 13's, if not lower. And that's awesome. But when all of your friends have cars that are just about as fast, or faster, it feels slow, lol. I hate that, but then I get out on the street, and just BLOW away some Honda trying to cut me off, and it makes me smile .

Damn Phil. . . . excellent, although it was kind of what I was predicting. I was going to say, one of the differences between your engine and mine (aside from the obvious displacement difference) is the heads. If you swapped-out for something beefier you'd see instant benefits I think. (Remember, my EJ257 is DOHC)

Still, those torque numbers are awesome! That's why you feel it pull like a mother on the street. . . and torque will win you races at the dragstrip, too!

That torque number also explains why I can spin all 4 in the dry. The car looks so innocent, to make so many wooshing noises.

BAC5.2 wrote:That torque number also explains why I can spin all 4 in the dry. The car looks so innocent, to make so many wooshing noises.

Maybe the lack of power up top has to do with the cams more than the heads.

I guessed your torque/hp pretty damn close!! (phil an i were guessing his output, i was low by 7 on both numbers) That's fkn sweet. Torque is fun as hell, and the hp # isn't shabby either. Just think how much you could tow!:lol:

Yukonart wrote:Damn Phil. . . . excellent, although it was kind of what I was predicting. I was going to say, one of the differences between your engine and mine (aside from the obvious displacement difference) is the heads. If you swapped-out for something beefier you'd see instant benefits I think. (Remember, my EJ257 is DOHC)

Though i agree with you... http://www.bbs.legacycentral.org/viewto ... 019#102019

Does anyone know exactly why the 22t is torquey while other ej's are more high strung?

Isn't there a correlation between torque and a lean condition? (in starion/conquests, the venturi effect pulls gas to the outside cyls, leaning out the middle 2, and providing more torque. It may just be the lean creating power though)

How does the ej22t cam profile compare with a ej20t? Are they the same diameter in the heads?


Questions from the ej22t tuning sideline.

I remember Steve knowing a bit about our Cam specs. I hope he can chime in with some good info about it.

someone, i cant remember who explained a lot about the torque difference and valve sizes and whatever on the ej22t. I think (dont quote me) the exhaust ports are smaller on that than most other engines, the ej22e for example.

plus if all that was there was evos and wrxs then you also had the biggest engine there too.

im pretty sure that is why torque is higher than HP.

The smaller valves will help pull more air in at low rpms, but will be restricted at higher rpms, so even changing to a later N/A head with bigger valves (and roller rockers) would probably help HP and with the FI would barely hurt bottom end at all. Possibly slightly less power before boost, but it's a guess. The cams on the turbo are barely different than the N/A, which I find odd as if they optimized the engine to run off boost, like they REALLY wanted to reduce lag as much as possible. That and the N/A cams are probably fairly conservative. Overlap is the same number of degrees, though the intake opens 2 deg sooner on the turbo. I don't like how early the exhaust valve opens at the end of the power stroke, though the N/A is worse for this. Not sure how the lobes differ. As I've said before, between the N/A and turbo N/A there's seemingly little loss of torque, but maybe 10 hp lost (?) which I'd attribute the loss of 1.5 compression points more than the cams.

Steve

Holy torque! Real nice #'s. I'm impressed by that juicy, juicy torque. Now we can all see what a 16G will do. I keep getting on dzx's ass about getting his shit dyno'd once his gears are fixed. We are at altitude so it should be interesting. I will be dynoing my car on the stock turbo here pretty soon so that all the people without the super dooper 16G will be able to see what kind of power that they can expect from a stock turbo with quite a few supporting mods.