200sx question

[whiteknight]

does anybody know how much power an average 200sx would manage at the wheels, just out of curiosity? say with fmic, exhaust, power fc, highish boost but stock turbo.

[R31Nismoid]

http://www.nissansilvia.com/

[dangerous_daveo]

33.3% less than an RB.*

*the above information may or may not be made up on the spot with little to no actual proof.

[NJA82]

Mine made 190rwKW with similar mods and stock turbo and 14psi and some major boost leaks so the average for the stock turbo is usually around 200rwKW providing the fuel system can push it, i needed bigger injectors.

[32vspecII]

limit of the stock turbo is about 200rwkw . s15 440cc injectors will just get you there at a duty cycle thats probably best to be avoided

your really pushing the limits though , and many s15s have needed cams injectors afm to get to 200rwkw on the stock t28

[jazza08]

Dont forget however that 200rwkw in an s15 6 speed feels a shitload faster than in an r33!

If your thinking about one and dont need the extra space of the Skyline id definatly go for it! Aslong as its not an s14, s14a and s15s are the better looking cars.

[zymotic]

wonder what a realistic 1/4 mile time is approx for S15 @ 200 rwkw?

[jazza08]

mid 12s around 114-115mph from what ive seen

[scathing]

I'd put it in the 180rwkW region with those mods, at around 1bar.

The injectors and pump won't be maxed out, but they'll be close. For safety's sake you'd get a new pump and injectors before trying to screw out any more power.

The T28 will clear 200rwkW with cams.

[zymotic]

Aussie S15 T28's all ball bearing? This means with support mods they can hold say 17 psi safely?

[Kristov]

Aussie S15 T28's all ball bearing? This means with support mods they can hold say 17 psi safely?

I thought the JDM s15s were the ball bearing ones. Like the spec Rs or something. Have a look a nissan silvia they have a heap of dyno threads.

About your question i reckon what everyone else has said around 180- 200rwkw.

[jazza08]

S14 - s15 JAP spec's are t28 b/b

All Aus released S14s/s15s came out with t28s which are NOT b/b units!

Jap specs also picked up another 40kw (quoted figures) but that can easily be made up with adjustments to the exhaust system etc etc

[scathing]

Aussie S15 T28's all ball bearing?

No, they're not.

I believe the consensus is that the JDM S15s are all BB, but its pot luck as to whether the Australian ones are or not. Silvia owners have compared build dates, VIN numbers, part numbers for the turbo, and there's nothing they can see that differentiates between them.

[jazza08]

Exhaust housings... as im on NS.com all the time this is where i got that from.

B/B units have a 6 bolt exhaust housing while the non b/b turbos have 4? Maybe 5.

Not 100% sure on the non b/b units but they dont have as many bolts in the exhaust housings, this as well as a slight difference in the part number does show Aus Spec s15s have non b/b units!

[scathing]

Well yes, if you look at them you can tell the difference.

But if you're in the market for buying one you won't be able to tell from the build date or VIN number.

From the people I've spoken to on SilNSW and NSCC the part numbers for Au S15 BB and non BB T28s are identical (hence why a VIN number search is fruitless).

[TTT]

first of all - which 200sx you talking about?

those mods on an S14 or S14A will get about 180rwkw.

same mods on the S15's tend to get closer to 190rwkw.

my series 1 S14 with 1 bar boost, fmic, SAFC pulled 175rwkw.

ran a lazy 13.8 with heavy 17 inch wheels.

A mate with an S15 and 193rwkw using PFC and 17 psi ran 12.9 on the same night.

on the topic of BB turbo's and shit.

it doesn't mean anything for it to be AUS or JAP spec.

some had Ball Bearing and some didn't.

only way to tell is from the GARRETT part numbers on the stamp which is on a plate on the turbo between the front and rear wheels.

466541 = ball bearing

466543 = bush bearing

the second part of the numbers mean

-001 = S14 turbo (no splitter between wastegate and turbine exit)

-002 = S15 turbo (splitter between wastegate and turbine exit)

[whiteknight]

well done GTST. is there much difference in power between the ball bearing and non ball bearing? if so would you guys no how much? S15, 193rwkw, 12.9 thats pretty good. what other mods did he have?

[scathing]

Not from what I've heard.

I've seen some non-BB T28 S15s make 210rwkW+ with other upgrades.

[TTT]

Scathing -

yeh that would be Brentons right?

I think he had in the region of 225 rwkw with a lot of other mods apart from the turbo.

the original question was using "highish boost"

which doesn't mean much really.

So to "me", the stock setup runing 7psi of boost, "highish" would be double and a little more..

so I'd say that 17psi is highish for a stock turbo.

The example I gave of my mate that ran the 12.9 was using 17.5 psi boost on his stock S15 turbo.

Scathing, if you are the same scathing on other forums, then you'll know Dale.

and I think that night you were hitting 14 flat in the tree fiddy... if that is you..

his other mods at the time were.

stock dump, then 3 inch back.

hyperflow intercooler with silicon hosing.

AVCR

GFB hybrid bov

17x7.5 rims with Dunlop DJ-01's

Power FC

stock clutch

stock pump

stock injectors

stock fuel pressure.

stock turbo... etc

I don't think the difference between the BB and non BB is not so much power but the driveability.

I would "ASSUME" that the BB turbo would build boost at a faster rate.

I guess they have other bonuses like higher tolerances to extra boost maybe but I can't say from experience.

[zymotic]

Scathing - I guess they have other bonuses like higher tolerances to extra boost maybe but I can't say from experience.

Thats what I am wondering ie can BB run 17psi while bush bearing only 14psi outer max like the GTST/GTT.