question about s15 turbos - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

redrps13 · 10-10-2003, 12:07 PM

how much psi on a s15 turbo should put me close to 300hp? i just got my turbo on and im going to the dyno but i need an idea of where to set my boost conroller so i dont have to waste a bunch of runs.

nokeone · 10-10-2003, 02:10 PM

also depends on your other mods...a stock sr will require higher boost to acheive the same hp output that a modified sr can attain at less boost..

so it's all relative..

set it at 12psi, to be safe, and go from there...if you're looking to be thrifty a Dyno session may not be for you...it takes time to dial in a car..all cars are different..all react differently...i promise you yours will be unique..so advice you receive may be worthless..

good luck

s156spd · 10-11-2003, 12:17 AM

12 is week i ran 12 daily at 275 to the wheels. 274 in torque. but thgen agin this was on the full s15 6spd swap. but the turbo is good till max boost at abotu 17-18lbs. start @ 15

S15 Powered · 10-11-2003, 02:01 AM

Quote:

Originally posted by s156spd
12 is week i ran 12 daily at 275 to the wheels. 274 in torque. but thgen agin this was on the full s15 6spd swap. but the turbo is good till max boost at abotu 17-18lbs. start @ 15

At 15psi on a stock motor it's only a matter of time til something fries, and at 17-18 psi that turbo is blowing hot air.

s156spd · 10-11-2003, 09:52 AM

if thats what suits u. but i can tell u evry time i went to the track i was boosting 17-18 lbs all day and on the way home as long as i had race gas i did this alot and ran my car hard. ran 12.7 @110 @ 18lbs i pulled a 314 and 299 tourque. as for hot air dunno were your getting that info from. this is not true. even hevythrottle on there site is says this turbo's efficiancy is good to 15-18lbs.

*HaLo* · 10-11-2003, 10:09 AM

Quote:

Originally posted by S15 Powered
At 15psi on a stock motor it's only a matter of time til something fries, and at 17-18 psi that turbo is blowing hot air.

Untrue... I have an S15 turbo... I boosted 15psi daily for all summer with 18psi for drag racing... No problems whatsoever.

FRpilot · 10-11-2003, 10:24 PM

someone on fa dynoed 299hp and somewhere about the same for torque with s15 turbo. his car was tuned by secret services. man.. theres a lot of hardcore cars in fl.

S15 Powered · 10-12-2003, 01:52 AM

Quote:

Originally posted by HaLo
Untrue... I have an S15 turbo... I boosted 15psi daily for all summer with 18psi for drag racing... No problems whatsoever.

Just keep runnin that setup and let me know what happens in another year or two.

*HaLo* · 10-12-2003, 08:01 AM

I did 11k km this year, with regular auto-x and drag racing. I tested my compression yesterday: 140-140-135-135. I don't believe that there is a problem. I've known people running 20 psi of simple T28 (I know it's not efficient) for 2-3 years and they had no problems. Now you're allowed not to believe me but this is a tried method and I'm confident this car will be running for years to come in this setup.

S15 Powered · 10-12-2003, 01:36 PM

Quote:

Originally posted by HaLo
I did 11k km this year, with regular auto-x and drag racing. I tested my compression yesterday: 140-140-135-135. I don't believe that there is a problem. I've known people running 20 psi of simple T28 (I know it's not efficient) for 2-3 years and they had no problems. Now you're allowed not to believe me but this is a tried method and I'm confident this car will be running for years to come in this setup.

Well, I can only hope that you're right cuz I also have an S15 motor with that very same turbo so if you're right and I'm wrong, I'll be a happy driver. However, it doesn't seem like a safe setup to run if I want to keep my car as healthy as possible.

*HaLo* · 10-13-2003, 08:33 PM

Quote:

Originally posted by S15 Powered
Well, I can only hope that you're right cuz I also have an S15 motor with that very same turbo so if you're right and I'm wrong, I'll be a happy driver. However, it doesn't seem like a safe setup to run if I want to keep my car as healthy as possible.

Just install some gauges and be sure to watch them.

That's what I did.

I may also be wrong, but for the moment, it's still pulling hard. I've been running 11 psi daily though in the last few weeks (I don't feel like I need more power than that)

S15 Powered · 10-14-2003, 02:33 AM

Quote:

Originally posted by HaLo
Just install some gauges and be sure to watch them. That's what I did.

I may also be wrong, but for the moment, it's still pulling hard. I've been running 11 psi daily though in the last few weeks (I don't feel like I need more power than that)

Yea, I think i'll just run it at about 12-13 on a daily basis as soon as i get a boost controller. I might do a dyno pull at 17 once to see what's up

taka · 10-14-2003, 12:14 PM

what is an s15

Silvia Wannabe · 10-14-2003, 01:49 PM

the model after the s14 duh

I would definately recommend using the search button before posting like that again

10-10-2003, 12:07 PM	#1
redrps13 Join Date: Jan 2003 Location: louisville Posts: 27 Trader Rating: (0) Feedback Score: 0 reviews	question about s15 turbos how much psi on a s15 turbo should put me close to 300hp? i just got my turbo on and im going to the dyno but i need an idea of where to set my boost conroller so i dont have to waste a bunch of runs.

10-10-2003, 02:10 PM	#2
nokeone on strike three. Join Date: Mar 2003 Location: Santa Cruz, California Age: 46 Posts: 3,282 Trader Rating: (0) Feedback Score: 0 reviews	also depends on your other mods...a stock sr will require higher boost to acheive the same hp output that a modified sr can attain at less boost.. so it's all relative.. set it at 12psi, to be safe, and go from there...if you're looking to be thrifty a Dyno session may not be for you...it takes time to dial in a car..all cars are different..all react differently...i promise you yours will be unique..so advice you receive may be worthless.. good luck __________________ panda; rockin your socks from the Bay to LA to SD, yay! Pink GodziRa

10-11-2003, 12:17 AM	#3
s156spd Leaky Injector Join Date: Feb 2003 Location: VA Posts: 147 Trader Rating: (0) Feedback Score: 0 reviews	boost for s15 turbo 12 is week i ran 12 daily at 275 to the wheels. 274 in torque. but thgen agin this was on the full s15 6spd swap. but the turbo is good till max boost at abotu 17-18lbs. start @ 15

10-11-2003, 09:52 AM	#5
s156spd Leaky Injector Join Date: Feb 2003 Location: VA Posts: 147 Trader Rating: (0) Feedback Score: 0 reviews	s15 turbo power if thats what suits u. but i can tell u evry time i went to the track i was boosting 17-18 lbs all day and on the way home as long as i had race gas i did this alot and ran my car hard. ran 12.7 @110 @ 18lbs i pulled a 314 and 299 tourque. as for hot air dunno were your getting that info from. this is not true. even hevythrottle on there site is says this turbo's efficiancy is good to 15-18lbs.

10-12-2003, 08:01 AM	#9
HaLo from Canada, eh! Join Date: Sep 2001 Location: Montreal, Quebec Age: 46 Posts: 5,201 Trader Rating: (0) Rides Gallery: HaLo Feedback Score: 0 reviews	I did 11k km this year, with regular auto-x and drag racing. I tested my compression yesterday: 140-140-135-135. I don't believe that there is a problem. I've known people running 20 psi of simple T28 (I know it's not efficient) for 2-3 years and they had no problems. Now you're allowed not to believe me but this is a tried method and I'm confident this car will be running for years to come in this setup. __________________ -> HaLo Race Car: '98 E36 BMW M3 Daily Drivers: '23 Audi Q4 e-tron & '13 VW Touareg SOLD: 01 GPW Honda S2000 PARTED: 93 Pearl White 240SX LE Fastback w/SR20DET SOLD: 93 Super White 240SX SE Convertible w/Silvia Front

10-14-2003, 12:14 PM	#13
taka Join Date: Oct 2003 Location: columbia Age: 39 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	what is an s15

10-14-2003, 01:49 PM	#14
Silvia Wannabe Join Date: Mar 2003 Location: London Ontario Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	the model after the s14 duh I would definately recommend using the search button before posting like that again