264rwhp and 290rwtq from an SR

[RedSuns]

1996 Silvia K's SR20DET
Stock S15 spec-r M/T Turbo
GREDDY V-SPL FMIC
Walboro Fuel Pump
TSF one peice aluminum driveshaft
stock s14 ECU
stock 370cc injectors
manual boost controller


that was on a 4.08 rear end...i have now put in a 4.36 that should pick the HP and TQ up a little bit

I am damn impressed that my SR did these numbers after 4 solid years of brutal abuse

EDIT: s15 turbo for the win

[Dutchmalmiss]

how can you make that much with just an intercooler, boost controller, fuel pump, and driveshaft??? those are impressive numbers for such little mods. maybe it's the driveshaft??

[nismoman]

:faint: on the stock turbo??

[RedSuns]

how can you make that much with just an intercooler, boost controller, fuel pump, and driveshaft??? those are impressive numbers for such little mods. maybe it's the driveshaft??


i do talk to my SR at night before i leave her all alone at the shop :love:

[Irukandji]

what boost were you running?

[Ian]

i thought you had an S15 turbo?

[RedSuns]

what boost were you running?


oh jesus...when full bost started to roll in it spiked to about 18ish then settled into 16 until redline

[RedSuns]

i thought you had an S15 turbo?

thank you sir!!!!

[TheSnail]

So how is it a stock turbo? Stock as is "it came on a sr" or "it came on a 96"

[Ian]

it's not aftermarket...

[RedSuns]

So how is it a stock turbo? Stock as is "it came on a sr" or "it came on a 96"


well yes and yes...s15 spec r turbo

[ni5mo240]

its not the turbo that came with that motor, therefore it is not the stock turbo

[RedSuns]

its not the turbo that came with that motor, therefore it is not the stock turbo

see the edit

still a stock nissan turbo though

[TheSnail]

Though it's a little deceiving. Its like someone saying he has a bone stock redtop puting down 260whp at 16 pounds. But whatever meets your fancy.

[RedSuns]

Though it's a little deceiving. Its like someone saying he has a bone stock redtop puting down 260whp at 16 pounds. But whatever meets your fancy.


just showing that the SR can make TQ

hell i have seen an s13 Sr make 254rwhp at 13ish psi before..i think it was actually a little less than 13psi

[TheSnail]

Those are some damn impressive TQ #s.

[RedSuns]

Those are some damn impressive TQ #s.


with the new diff in i could break the 300rwtq right now :eek3:

i might bring it back to the dyno

[eyustfu]

at that boost level your probably maxing out the injectors. any dyno charts?

[TheSnail]

I have been wondering about TQ latley. I have a s15 sr and as you know the hp is 250 but the tq is at 203. I am guessing it is because of the intake runners, or the vtc. I would think that it would be more potent if you got a s13 or s14 sr with a s15 turbo. The s14 has vtc aswell but the tq #'s are fine, so does any one know the cause of such low tq on the s15? I will take the car to the dyno in 2weeks, once the drive shaft is made to see if it makes a stock 180rwtq.

[WILDACEX187]

yea u shouldnt be pushing 16 pounds on stock injectors with that turbo

[Pstl_pete]

All this time I have been hearing you cant run anything higher than 13psi on your stock 370cc injectors and then I see this. Whats the deal?

[RedSuns]

yea u shouldnt be pushing 16 pounds on stock injectors with that turbo


how does a 21psi spike with it settleling down to 18psi sound....

[RedSuns]

I have been wondering about TQ latley. I have a s15 sr and as you know the hp is 250 but the tq is at 203. I am guessing it is because of the intake runners, or the vtc. I would think that it would be more potent if you got a s13 or s14 sr with a s15 turbo. The s14 has vtc aswell but the tq #'s are fine, so does any one know the cause of such low tq on the s15? I will take the car to the dyno in 2weeks, once the drive shaft is made to see if it makes a stock 180rwtq.


the vtc play a huge part in the TQ of the engine..if i unplugged te sylenoid at that boost level my tq would drop close to 45ft-lbs

[RedSuns]

All this time I have been hearing you cant run anything higher than 13psi on your stock 370cc injectors and then I see this. Whats the deal?
people don't want to blow up their engines :hsdance:

[420sx]

^yea dude. ur asking for it. get at least an fpr quick

[RedSuns]

at that boost level your probably maxing out the injectors. any dyno charts?

during the boost spike i would swing lean..but once the boost would settle the a/f was in the 11's..IIRC..i have the dyno info...but no scanner

[RedSuns]

^yea dude. ur asking for it. get at least an fpr quick


i am safe with this setup

[eyustfu]

running lean at WOT is never a good idea, but it's your car go for it if you feel that it works good that way

[WILDACEX187]

dibs on the turbo when it blows :wiggle:

[wootwoot]

The reason you made so much torque is because of the spike.

[krustindumm]

with the new diff in i could break the 300rwtq right now :eek3:

i might bring it back to the dyno


I don't see how a diff is going to increase your crank tq, but whatever.

[TheSpeedFactor]

that's how it is here at The Speed Factor. we make shit happen and people can't beleive it. Hell people standing around the Dyno when we ran it couldn't beleive what the charts said. The Driveshaft certainly helped as well.

[Angel]

Where did my post go ?? I probably forgot to submit it :)
It was just to say that running lean during that spike at tq peak is pretty dangerous because that is where cyl pressures are really high and the engine is more likely to detonate. Ultimately it's your car and you can and will do as you please so take fwiw. Unless you have some way of determining that you are not getting any knock I would scale it back some.

[Aoshi112]

scan the graph please. :)

[RedSuns]

The reason you made so much torque is because of the spike.


my boost spike was about 2900-3100rpms....my peak TQ was at 4800

[RedSuns]

I don't see how a diff is going to increase your crank tq, but whatever.

FREAKING INCREDIBLE!!!!!! :hammer:

you missed the rw hp portion

[blu808]

Get bigger injectors asap. That is beyond the 370s range at anything above 10psi with that turbo. Also should help with the power. My sr made 300hp tq to the wheels with just s15 turbo, good manifold, z32 maf, 555cc injectors, and alot of tuning. That was on a drum dyno too,

[RedSuns]

Get bigger injectors asap. That is beyond the 370s range at anything above 10psi with that turbo. Also should help with the power. My sr made 300hp tq to the wheels with just s15 turbo, good manifold, z32 maf, 555cc injectors, and alot of tuning. That was on a drum dyno too,


funny thing is that I can i could make 300+ ftlbs of rwtq with the setup now...no need for bigger injectors

[krustindumm]

FREAKING INCREDIBLE!!!!!! :hammer:

you missed the rw hp portion


Yes, I understand. RWHP is crank hp - losses. The torque is crank torque - losses. You really think your car would go anywhere quickly with only 300lb/ft at the wheels? NO! Let's just say the tires are 24" around, then you have 150lb of force pushing your 2500lb car up a hill? Not going to happen.

Some dyno's read wheel TQ, most however have an ignition pickup and run the wheel tq backwards through the calculated gear ratio (engine RPM / wheel RPM = X, wheel tq / x = *crank tq).

The shorter gear ratio will increase your wheel TQ yes, but it will also decrease your wheel RPM (HP is constant). This will make X larger, causing your crank TQ reading to be roughly the same. You will experience greater acceleration, but it's not free, and it is definitly not a crank tq increase.

If you still don't understand, I can't elaborate much more.

[WILDACEX187]

Get bigger injectors asap. That is beyond the 370s range at anything above 10psi with that turbo. Also should help with the power. My sr made 300hp tq to the wheels with just s15 turbo, good manifold, z32 maf, 555cc injectors, and alot of tuning. That was on a drum dyno too,


no fmic? :loco:

[blu808]

What do you think smart ass? Ohh yea i guess i had stock exhaust too since i didnt list that.


Hey what dyno are you using? Sounds a little odd to me still.

[WILDACEX187]

What do you think smart ass? Ohh yea i guess i had stock exhaust too since i didnt list that.


Hey what dyno are you using? Sounds a little odd to me still.


sorry but im not one to assume :blah:

[blu808]

When you assume it makes an ass out of you and me.. lol my metal shop teacher used to tell me that.. Make sence?

[S14DB]

Yes, I understand. RWHP is crank hp - losses. The torque is crank torque - losses. You really think your car would go anywhere quickly with only 300lb/ft at the wheels? NO! Let's just say the tires are 24" around, then you have 150lb of force pushing your 2500lb car up a hill? Not going to happen.

Some dyno's read wheel TQ, most however have an ignition pickup and run the wheel tq backwards through the calculated gear ratio (engine RPM / wheel RPM = X, wheel tq / x = *crank tq).

The shorter gear ratio will increase your wheel TQ yes, but it will also decrease your wheel RPM (HP is constant). This will make X larger, causing your crank TQ reading to be roughly the same. You will experience greater acceleration, but it's not free, and it is definitly not a crank tq increase.

If you still don't understand, I can't elaborate much more.
:Ownedd: Tech pwnage. You're prolly making around 1200 wheel tq in 4th more in lower gears.

[RedSuns]

:Ownedd: Tech pwnage. You're prolly making around 1200 wheel tq in 4th more in lower gears.


all my runs were done in reverse :wiggle: