KA-T + 12psi = 298.89rwhp

[orion::S14]

Hey guys...finally got to dyno my new setup...it been in and running for ~10-11 months, but no dynos as of yet. I posted this on FreshAlloy (
http://forums.freshalloy.com/ubbthreads/showflat.php?Cat=&Board=UBB9&Number=67927195) and NICO already, so you may have seen it there...

Andyway, here's a cut and paste:

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...went down the the Brevard Motorsports "Cars for Charity" event in Melbourne (good turnout, BTW, +350 people) and hit the mobile Dynojet 248 for some #s.

I knew the car was close to ~300rwhp, b/c I had run it at the dragstrip months ago and pulled a 13.3 (easy launch) at 110mph...and it weighs ~2800lbs, plus me at 225lbs.

Anyway, at 12psi it did:

298rwhp @ 6700
274rwtq @ 4700

Not very KA like in it's power curve, I attribute that to JWT cams.

Motor is otherwise STOCK, ~100,000 miles...head has never been off it, bottom end has never been touched.

Fuel management is JWT: Cobra MAF, 50lb injectors, top feed rail...and base timing is @ 22 BTDC to make up for a little of the JWT *conservative* timing.

Turbo is T3/T04E, 57 trim, .63 A/R, Stg III wheel...Revhard manifold, TiAL 35mm, open DUMP.

Turbo outlet pipe is ~18" of 2.5" pipe, then full 3" from there back, 3" universal Magnaflow muffler.

Intercooler is GReddy VSPL.

I think that's all the pertinent details...

I was happy with the outcome...I expected +280rwhp...but didn't think it would top 295.

Graph looks a little weird...the GREEN run was the 2nd one, and he got into it a little easy...there was clutch slip on the first run (not shown on the graph, and it was dyno operator error)...and he was easy on it for the #2 pull.

The good, clean pull is the RED line, and it's 3rd gear.

www.KA24DEvelopment.com/file_images/240sx_dyno_12psi.jpg

Anyway, questions, comments, etc...welcome.

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I would have dyno'd in 4th, except there were clutch problems on the 1st run, when the dyno guy used 4th gear...he had to back the car up onto the dyno (it was a mobile Dynojet, on top of a large trailer....the rollers were 8' off the ground).

As he backed it up, he was slipping the clutch a little too much...so it was overheated and wouldn't hold in 4th. (He wasn't the sharpest tool in the shed...)

Anyway, the power curve is weird for a KA...but I like it. Good top end, it's all from the cams. I have run the stock S14 cams, S13 cam, dual S13 exhaust cams (248/248), and now the JWT...each was an improvement over the other, but the JWT setup is clearly the best for top-end power, but there is a mid-range TQ tradeoff...and I don't care!

It's TONS of fun on the street, with positive manifold pressure anywhere above 3k...but full boost (12psi) by ~3600-3800 in any gear.

For comparison, here is my last dyno @ 8psi, comparing the Hacked MAF to the JWT 370cc program:

www.KA24DEvelopment.com/file_images/S14_dyno_9-3-03_.55bar.jpg

You can see the difference in the cams...I had stock S13 cams in the motor when I dyno'd at 8psi.

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That info may answers most questioin about the setup, but if not, feel free to post them up...

:naughtyd: - Brian

[BSeay]

thats fuckin awesome dude, you're my hero...lol

seriously thats good shit, any future plans for the ole' girl?

[orion::S14]

Oh, here's a VIDEO!

http://www.putfile.com/media.php?n=100_0992&width=320

A buddy of mine recorded it...you can only really hear the open DUMP...I love it. So loud.

Anyway, just for clarification, that's NOT me at the end of the video, that's a friend of mine, Kai.

(And that was the third pull, the good one...)

- Brian

[orion::S14]

Future plans...use and abuse the car...I built it to do road course events, track days, HPDE's whatever you like to call them.

Road Atlanta is coming up (March 5th), then Sebring at some point later this year (I did Sebring last year at ~8psi, it was plenty of power then!)

I've never gotten to do open lapping at Roebling Road either(auto-x only :( ), so I'll hit that sometime this year if time/money permits.

- Brian

[cali240sxdrifter]

awesome run Orion, I managed to go to the Dyno lot and work the front entrance (was one of the staff at hand) and I saw your car on the dyno. Congrats on the award that you got too.

[mrmephistopheles]

that's good shit, Brian.
That's the same turbine I was looking at getting when I was planning a KA-T builld.
That power curve ISN'T KA-like at all!

[orion::S14]

...Congrats on the award that you got too.

Thanks...(for those who weren't there, it was highest HP 4-cyl forced induction).


...that's the same turbine I was looking at getting when I was planning a KA-T builld.

...get the 50-trim...get the 50-trim...get the 50-trim...

I'll swap someday, get a 50-trim compressor, maybe ball bearing...but otherwise a very similar turbo...with ceramic coating for the mani and turbine housing at the same time.

Thanks for the kind words, guys..

- Brian

[Maxboost]

Bravo-great numbers!
Those are impressive numbers on an very simple setup! Im glad to see there are more ka tuners in florida. I am also very impressed with the e.t. considering the weight. Just put the car on a diet, and watch the numbers drop. The thing I am so impressed with, is that this is accomplished on an engine with over 100k on the odo, and a stock bottom end (cast pistons), with a mildly tuned top end. You've got to love Nissan's engineering. Keep up the great work, and keep us posted. I plan on seeing you at local events.