Which is faster KA-T or SR20

[andrave]

my car got smacked in the parking lot last night, hit and run...goddamn it. You can't even open the driver's side door anymore.

[spec-u-later]

Have you been holding all that in for while? You need smoke ore something?All good points though.

[AelSic]

700 hp on stock internals?!! The highest rated hp for the sr on stock internals has been done by JUN and it is only 425 ballpark. See boy's these sr guy's do smoke crack rock, maybe that is why they have such grand delusions about their motors.

[andrave]

yeah but even that 425 hp run was on 101 octane on a dyno.. try that driving to work on pumpgas and you can kiss metal parts goodbye.

[Nathan]

Actually, a stock block SR allready made >500hp, and one is claimed to have done over 600, both in Florida. This is why I built the block of my KA Stock, it can't keep up...but I think built it can own all!

[usdm_180sx]

here is the truth the whole thruth and nothing but the truth... in a nut shell.

The slight RPM advantage the SR has over the KA does not outweigh the extra displacement the KA has...

simply the KA is the superior motor

adam

If that's the case why didn't Nissan put it on their jdm s13's and s14's?

[HolyShiznit]

First off Andrave and WD are my hero's they are each funny as hell in retrospect.

But seriously, lock this thread, the debate will never be over.

As for the questioner, do you really tune a Silvia? Cause damn you must live in Japan then. :rolleyes

[bumpermatic]

Actually, a stock block SR allready made >500hp, and one is claimed to have done over 600, both in Florida. This is why I built the block of my KA Stock, it can't keep up...but I think built it can own all!

Several stock block SRs have made 500+ hp, and the one in Tampa has hit 600HP, SAE corrected, don't know what type of headwork, but stock bottom end. That's the highest I have heard about SR.

KA, last I heard was 350HP @ 15psi, motor was all stock, that d240t dude or something. Someone made 504rwhp, but I think it was internally built, it's talked bout in the thread 'strength of ka block' or something like that. I could totally be off, please someone correct me if I am.

CA, damn...beats the hell out of me...I haven't heard anything, but I'm sure those CA boys would be able to crank out some good numbers.

The problem with all these uber numbers is that there's no guarantee you'll hit it the same. Also there's the issue of running pump gas as opposed to high octane gas. There's the issue of whether or not the stock bottom end was refreshed. There's the issue of whether or not the head has been done up. And a million others...

P.S. When someone says stock bottom end, I'm assuming everything below the head, but does that include pistons? I mean can someone clarify what stock bottom end, stock block, stock internals...i.e. listing out what part is consider part of what? I mean, is headwork not considered internals, even if u are messing with the valves?

[theronin]

wow, my first post totally eluded some of you guys, good job! :rolleyes

[TopStreet240]

high rev will win out in the end... there was a full theory on DSM tuners about which was faster the 2.0 ultra high rev or the 2.4L and the 2.0 high rev took it top end every time. If you have the money to build a top of the line 2.0 then it will be quicker.. on the street

[Biggs2004]

I love this, people get soooo mad about these questions...... in the end I think it all comes down the how thick your wallet is. That's about it. sorry, didn't mean to keep the thread going

[BoostFab]

silvia tunner, i can answer your question. the answer is SR. it is the greatest engine ever made, once you swap in one of these bad boys into your sylvia it solves every problem your car ever had. it can hold upwards of 700hp on stock internals, it has a lightweight aluminum block, and best of all its not a crappy truck motor like the boring KA.

lol i like that... you can double that hp if you add a cold air intake and you can rev up to 10k RPM....

ANDRAVE; that's a big fat mofo paragraph.

[Nathan]

If you have the money to build a top of the line 2.0 then it will be quicker.. on the street

See, I disagree. Maybe out on the highway, but that could be changed with gearing...I think torque will always own stoplight to stoplight racing. As for the stock bottom end CA guys, I think they are >350. As for stock bottom end KA's, I know one that would probably dyno over 400 if he'd ever do it. Once again, it's a person who doesn't spend any time on forums Bumpermatic, stock bottom end is just that...100% oem bottom end parts. I wouldn't say it couldn't be refreshed, just that if it was, it must use OEM pistons, rings, rods, pins, bearings, bolts, EVERYTHING.

[offtheline]

I know one that would probably dyno over 400 if he'd ever do it. Once again, it's a person who doesn't spend any time on forums

You should get that guy to do it for the damned bragging rights of all Ka-T guys. Heheh.

[Nathan]

Hahaha, I'll try to talk him into it. Actually, we might see one of his cars at the BIG SPRING MEET

[usdm_180sx]

As for the questioner, do you really tune a Silvia? Cause damn you must live in Japan then. :rolleyes

Uh...no. My question was: Why didn't Nissan even offer the ka as an option in Japan? Furthermore, they didn't offer the sr20det in usdm cars because if they did it would blow off the na z32 and rival the z32tt. It seems (Only Nissan knows) that the ka was chosen for usdm cars so the s13 and s14 would not rival their top of the line z32. I'm still wondering why they didn't put the na sr20 into usdm cars. Fortunately, it just so happens that ka's can be tuned pretty nicely as well. Yashio factory imported a usdm 240sx and swapped, get this, an sr20det into it. Hahahahahaha

Personally I like the sr but I'll ask again:

"How much money do you wanna spend???"

That IS the bottom line...

[SingleCamSam]

As far as budget goes, the KA will give you more bang for the buck. Period. By the time you've paid for an SR20 (that's probably had the crap beat out of it in japan) you could already build a complete turbo-kit for the KA good for 250+whp.

Power and speed? KA wins again. Psi for psi the ka will make more power at a given boost level and make it over a wider range than the SR. Bigger displacement and higher compression simply can't be argued with. There was an excellent thread on FA where Greaser's and D240T's dyno's were compared. Until the last 1k or so rpm the KA was making on average 20-30 more hp on less boost. The slight RPM advantage of the SR won't make a difference if the KA car has already passed it.

As for why they didn't put the KA into the JDM cars...We're talking KA-T's here. In NA form of course there's no comparing the KA to the SR. The cars were marketed differently in different countries, and required different engines.

On the bright side, when people start to realize this maybe the insane price of SR clips will start going down and even the "bang for the buck" playing field a little. Until then the KA-T is simply the better option.

Even in the KA forum i'm so gonna burn for this.....

[WDRacing]

Bye Bye now...Should have done this earlier. This question leaves to much out in the open for argument.

Some people prefer the higher revving SR. Some people like the cubes and torque curve of the KA. Thats that...

WD

[TrunkMonkey]

what the?! how did i miss this thread!

the KA owns all!!!!!!!

okay, back to lock mode.

-demetrius