rofl ok lah, i'll be nice. Actually I'm a noob wif cars but some of your points are pure BS.
*summons the power of Google*
stormlcc said:
although 300whp has some difficulties... and 290whp is FAIRLY EASY
I dunno what you're smoking, but if I were desperate enough to gain 10 HP
at the wheels...
Assuming you already have a pod and exhaust done,
1) decat/gut cat - illegal but if you're really desperate...
2) lightened flywheel
3) CAI
4) bigger I/C - lowers inlet temps, then raise boost to compensate
5) +1~2 PSI boost
6) increase timing + use 98 RON
7) increase compression by shaving head/thinner gasket + use 98 RON
8) port + polish
9) higher diff ratio
10) lightened tailshaft/drivetrain - reduces tranny loss
Pick any 3. I just came up with 10 ways to bring 290RWHP to 300RWHP in under 2 minutes. Most of the above "mods" cost peanuts to do, so how exactly is 290RWHP "FAIRLY EASY" while 300RWHP suddenly becomes difficult?
stormlcc said:
but it could be done even without a stand alone system... it only needs bigger injectors (any injectors above 300cc will do) and a good piggyback, and a slightly bigger turbine (slightly bigger than the RB25 turbo for example the HKS GT2510), or with cams and a good flow of air and fuel
lol. :shocked:
Instead of pulling numbers from Google, let's try something different:
RB20DET silvertop injectors = 6x 270cc.
SR20DET injectors = 4x 370cc.
You are attempting to make 300HP
at the wheels, assuming 20% drivetrain efficiency loss that would be approx 360HP at the flywheel, correct?
Nissan rates a stock RB26DETT at ~280HP at the fly, though most people say it's realistically around 300HP, which I'll give you the benefit of the doubt and assume it's correct.
So for a stock motor that's good for 300HP, Nissan equips it's flagship motor with...
RB26DETT injectors = 6x 440cc.
Do you
honestly think (c'mon, use common sense here) that you can make 60HP more than a stock RB26DETT with injectors that are 2/3rd the size? The RB26 is arguably overengineered and has higher displacement but that's hardly the point given that you'd require
at least 18 PSI to achieve 300RWHP. I wouldn't be suprised if an SR20DET couldn't make 300RWHP with 20 PSI. Counting the fact that injectors get carbon build-up over time which further reduces flow rate, you'd have to be retarded to think that "300cc" injectors would do the job.
HKS GT2510 lol, are you quoting random numbers from the HKS website? I believe most people are after the GT28RS for its incredibly quick spool, but hey I'm just a guy who pulls facts and figures off Google to sound smart, wtf would I know?
Any mechanic/tuner who has a clue as to wtf they are doing will know that to maximize the potential of having aftermarket cams requires flexible engine management, ie. aftermarket. You'd require a fuel remap to maintain A/F ratios which a "piggyback" like a SAFC would do, and remapped ignition timing which a piggyback
cannot do. Solution? Aftermarket ECU. :_:
stormlcc said:
and about your comment on the RB20DET - more torquey than SRs, you did google that out didn't u..... ????
SR's torque is way better than the RB
You have an A31 right? I have a feeling you measure torque using your butt dyno.
If you're used to sitting in a RB20DET powered Skyline or a pissfarter Ceffy, then one day you get a ride in a SR20DET Silvia/180/Pulsar and go "holy shyt this thing is fast", no shyt buddy it's 200kgs+ lighter.
I like to compare things using proper dyno charts, not the dyno you call your ass, and since you despise Google references, may I suggest you kindly head down to your local tuner and ask him if a 300HP RB20 makes more torque than a 300HP SR20 with similar tune. Even in the unlikely event that an SR20DET makes that 10Nm @ like 7000 RPM (which is hardly what I'd call "wayyyyyyyyyyyyy more torque") more than the RB20DET, you'll find that the RB builds more torque earlier and has a wider usable rev range.
It's common knowledge that 6 cylinders are smoother + make more torque than 4 bangers, go ask Proton why they launched a Perdana V6 with the same displacement as the old one. :angel_smile:
SR20DETs are far from being sh*t engines, but RBs take more punishment. Didn't someone have their SR20 sitting for a while at the workshop for a rebuild, eh Mr. Cheong? ;) There's a reason why Nissan gave the small farts the SRs and the bigger boys VG/RB, but I guess maybe the Ceffy didn't deserve it. *rolleyes* I'm just biased against V8s,
most of 'em can't rev for shyt, ie. GM pushrods. :x I can't say no to a V10 E60 M5 though. :P
Pls lar, don't be so quick to judge and make lame comments like "i think u googled on these info dude....." or "you did google that out didn't u..... :emoticon_U:????." The Internet is a bloody useful resource, if you think you're too smart for Google then I pity your ignorance because it's hardly restricted to a bunch of young "omg i just got my first turbo woot got booooooooosttt?" opinionated know-it-all punks on ZTH and howstuffworks. :emoticon_U: We're here to share and learn, not be some uptight b*stard who thinks he's so leet and can start putting others down. You may have been right about SR20s but even that doesn't justify your remark. Woooooot another keyboard warrior for teh win. :emoticon_U: