342 HP KA-T @ 10.5 psi

[IvanAtSPRacing]

Read about the Crower V3 cam test HERE (http://www.phatka-t.com/forums/viewtopic.php?p=1286#1286)

[IGSDann]

Impressive gains, especially with no loss in the low end. See how this is the Hender's S13 you're working on I want to see the gains at 30 psi with race fuel. Good stuff though

[sideview_180sx]

I love more updates to show KAs aren't just a useless motor in a 240. The bug of having boost took another hard bite with that link.

[OptionZero]

342 @ 10 psi?

I seem to recall white bunny over on fresh alloy getting 313 with his FMAX kit on 14 psi (memory's hazy)...so that seems impressive.

[IvanAtSPRacing]

I made 300 whp a while back with stock cams at 9.5 psi. I think the big gains were due to the AEM EMS, tuning, lack of MAF. I dont know what the V2 cams would have picked up at this level but suspect somewhere around the 26 whp we gained at 18 psi (although this was done on race gas). The additional 16 whp from the V3 cams plus a pound of boost netted the 342 whp.

I know that this number doesnt sound all that impressive after the HP we made prior to this, but 342 whp at only 10.5 psi is just plain sick.

Now that I have addressed the cams that Nissan didnt when they "accidentally" forgot to turbo the KA and the pistons they "forgot" to make forged, now I just need to address the intake manifold that they mistakenly designed for low end torque and we will have what Nissan SHOULD have given us here in the states.

Imagine how funny would it be if Japaneese kids were dreaming about being USDM TytE yO with the KA24DE-T

[IGSDann]

I know that this number doesnt sound all that impressive after the HP we made prior to this, but 342 whp at only 10.5 psi is just plain sick.

Yeah now that I think about it, a stock STi pushes what, close to 20 psi boost and makes under 300hp, an Evo pushes 20 and makes 276, for just 10.5 that is fucking sweet. Great job guys!

[MakotoS13]

well think about it. 10.5 psi on a 2.4 is More air than 10.5 on a 2.0 liter. PSI indicates that the more area you have the more air you can force into the cylinders. smaller motors need more boost to cram the same amount of air that larger motors can do with lower boost levels.

there is no replacement for displacement.

[IGSDann]

well think about it. 10.5 psi on a 2.4 is More air than 10.5 on a 2.0 liter. PSI indicates that the more area you have the more air you can force into the cylinders. smaller motors need more boost to cram the same amount of air that larger motors can do with lower boost levels.

there is no replacement for displacement.

Yes, but it's still a great output for that psi... 142.5 hp/liter goooood :rawk:

[MakotoS13]

agreed :)


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[IAM_SO_sLOw]

do you guys know a good place to get these cams?

[Colorado S14]

www.phatka-t.com

[FRpilot]

well think about it. 10.5 psi on a 2.4 is More air than 10.5 on a 2.0 liter. PSI indicates that the more area you have the more air you can force into the cylinders. smaller motors need more boost to cram the same amount of air that larger motors can do with lower boost levels.

there is no replacement for displacement.

and the imprezza STIs are using 2.5 liters to making that 300hp.

[Andrew Bohan]

Yes, but it's still a great output for that psi... 142.5 hp/liter goooood :rawk:

haha i have 184.6hp/L. oh well.
i need some cams huh

[Var]

all the sr guys(such as myself) must feel stupid right now

[citizen]

haha i have 184.6hp/L. oh well.
i need some cams huh
if you get some cams you need some shiny new low comp pistons to match

[kandyflip445]

if you get some cams you need some shiny new low comp pistons to match

:rofl: :rofl: Good one.

[IGSDann]

haha i have 184.6hp/L. oh well.
i need some cams huh

Sorry, that was low boost, high boost was 265 per liter. That's better. :naughtyd:

And yes you need cams on your rotary engine, just weld them on the rotory casing and there's another 506 horses!!!

[driftyour40]

well think about it. 10.5 psi on a 2.4 is More air than 10.5 on a 2.0 liter. PSI indicates that the more area you have the more air you can force into the cylinders. smaller motors need more boost to cram the same amount of air that larger motors can do with lower boost levels.

there is no replacement for displacement.

Not to be a dick, but compression plays a lot in the boost levels they are running . Not to mention that the Subaru is a 2.5 as mentioned before.

[turtl631]

HP/Liter doesn't seem fair with rotaries. I recall reading something in SCC (yea yea, they do have some cool tech articles occasionally) about how perhaps the 13B should be compared to a 2.6 L piston engine. And powerwise it would make sense...what else makes that much power out of 1.3 L..thats way smaller than even a B16 or 4AG. Anyways, that was off topic. Awesome post Ivan, those cams look great, I'm quite pleased with the recent development on the KA. Too bad the cams don't work with stock springs, and getting forged pistons in an engine isn't as simple as just buying them and dropping them in, or there would be a lot more ass-kicking turbo KAs out there.

[Var]

sorry to drift off topic.

Horsepower per liter doesnt mean anything period.

You have to take into account

Outside dimensions
Weight
Cost
Power and powerband
Reliability

That's how you can say an engine kicks ass.

Example LS1

Fits in most engine bays
503lb minus emission crap
4K for a front clip
350hp and lots of torque
Takes good abuse

IMO that's a good engine

[kandyflip445]

Also PSI from different turbos can mean different CFM. The turbo has to be matched to the engine.

This topic is to point out that the R&D for the KA is coming along very well thanks to Ivan and others having interest in the engine. Not to say what makes what engine better.

[Var]

yes..i apologize for the rant. Phat KAt is doing some impressive work to our
beloved "truck motor"

keep up the good work

[ghambino]

Those are very impressive numbers great job

[ghostuss]

as long as it smokes ppl, I don't care if you call it a train motor or a golf car motor LOL.

[Andrew Bohan]

or a washing machine motor. i get that sometimes.

and yea, 13B should be compared to a 2.6 liter piston motor based on sparks per crank rotation and the fact that the each rotor is doing intake, compression, power, and exhaust all at once, but that discussion is for another time and place.