300rwhp sr20? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jdm_dean · 10-24-2009, 05:08 PM

I know its doable, but how? possible on the stock turbo? and do you need to upgrade fuel pump, injectors at the level?

fcdrifter20 · 10-24-2009, 05:12 PM

many many threads about this already man just search and pooof u get a huge list off threads with answers to ur question

HPballer76 · 10-24-2009, 05:17 PM

great first post. but im bored so

s15 t28
550cc injectors
metal headgasket
arp headstuds
z32 maf
and a tune should get you there.

*Ceepo* · 10-24-2009, 05:30 PM

Search is your best freind, if you ask things like that your not gonna like it here long, people dont like to spoon feed others...

jdm_dean · 10-25-2009, 01:02 AM

Quote:

Originally Posted by HPballer76

great first post. but im bored so

s15 t28
550cc injectors
metal headgasket
arp headstuds
z32 maf
and a tune should get you there.

i had a lazy moment, sue me.

anyway good shit bro, thanks.

steve shadows · 10-26-2009, 12:53 AM

No

The stock T25, nor the T28 will ever get you anywher close to 300 WHP (on a real dyno at least)

You will need a GT2871R at least

sidewaysil80 · 10-26-2009, 01:23 AM

Quote:

Originally Posted by steve shadows

No

The stock T25, nor the T28 will ever get you anywher close to 300 WHP (on a real dyno at least)

You will need a GT2871R at least

i dont doubt your knowledge but i doubt your answer...what dyno do you consider a real dyno?

i've seen gt28r and gt28rs turbos make that amount of power on a mustang dyno and i think it was a dynojet dyno...but i'm just curious as to which is a "real" i guess truly accurate dyno.

steve shadows · 10-26-2009, 02:49 AM

Quote:

Originally Posted by sidewaysil80

i dont doubt your knowledge but i doubt your answer...what dyno do you consider a real dyno?

i've seen gt28r and gt28rs turbos make that amount of power on a mustang dyno and i think it was a dynojet dyno...but i'm just curious as to which is a "real" i guess truly accurate dyno.

Dyno Dynamics

Mustang Dyno

However when compared side by side the mustang dyno is still far inferior.

Dyna Packs read at the hubs which is much less rotational mass and also just reads more in general. not to mention the dyna-packs OVERHEAT before you can really do any serious steady state tuning.

Dynojets are a giant Drum with no ability to adjust load to accurately match the car on the chassis dyno. its a one size fits all approach and you cannot tune anything else in the map effecively except for full throttle plow through acceleration (effectively drag runs). You cannot even access 80% of the cells in the map you drive in normally to actually fine tune the map

jdm213 · 10-26-2009, 01:20 PM

Quote:

Originally Posted by HPballer76

great first post. but im bored so

s15 t28
550cc injectors
metal headgasket
arp headstuds
z32 maf
and a tune should get you there.

nah dont just do that you will carmelize your pistons like butter, rebuild the bottom end, deck hone resurface and then turbo nicely with 450 cc's and a boost controller and you should get 300 nicely and well done.

HPballer76 · 10-26-2009, 01:51 PM

^^ people run well over 300 all the time on stock bottom ends....

spooled240 · 10-26-2009, 01:59 PM

hell people run 300 whp on stock ka24 internals lol

i heard composite stock/felpro headgaskets hold up well for 300 whp so a metal hg shouldn't be entirely necessary

boostbyyou · 10-26-2009, 02:04 PM

ive made 350whp on stock HG and head bolts and never had a problem..

gt2871r .64, 555cc injectors, z32 maf, chipped ecu with all of the little bolt ons and you have 330whp.... next thing in the way of making power is cams. if you do cams please get valve springs. I recommend BC for cams and springs.

HPballer76 · 10-26-2009, 04:29 PM

^^ hey your in raleigh! thats not to far from me. im about to be running the same setup is you. who tuned your ecu? and what boost level did you make 350 on?

brian3676 · 10-27-2009, 08:02 PM

injectors, 2871r, z32 maf, 255 fuel pump with a power FC will get you there, internals are all fine as is, at MOST i would recommend a head gasket and head studs, but i know plenty of people runnin 300 with out it.

loucal · 10-27-2009, 09:57 PM

Honestly tunning is key on this. I made 300whp and 300 lbs/tq with 550's Aem ems 3.5 bar map sensor and BPU's. This was on a s14sr20det stock turbo at 18psi. So its very very possible and thats with 11.2 afr's. Just find a good tuner.

-lou

jdm213 · 10-27-2009, 11:32 PM

yeah but it aint made to last and its risky, i prefer to be safe rather than sorry and something that nicely rebuild offcourse will make more power!

blkkouki · 10-30-2009, 05:56 PM

I would do the GT2871r, Apexi metal head gasket, HKS SARD or Nismo 550cc injectors, ARP head studs, and get it tuned. 300hp can be had without doing the head studs and head gasket, but it will help to ensure reliability.

S13Disco · 11-01-2009, 03:06 PM

my setup...stock block and head, t3/t4 turbo, Walboro 255lph fuel pump, 550cc injectors, FPR, Z32 Maf, SAFC-II for tuning.... made 302HP and 273ft-lbs of torque...all i have to do is get PowerFC and retuned and ill have higher numbers.... SAFC-II is maxed out...tuned on a dynojet

Omarius Maximus · 11-02-2009, 04:38 AM

you can use a small turbo or a big turbo for 300whp. The difference will be in the spool/transient response and the safety margins per whatever fuel you're running.

A 50 trim t3/t4 will make 300whp in it's sleep on low boost...while being damn near it's peak in compressor efficiency...which means that the margins for error on pump gas are much larger. Detonation threshold his much farther. The larger t3 turbine housing and wheel also help to decrease backpressure in the topend.

You can hit 300whp on a 28r....and it'll have insane response...but the safety margins on pump gas are much smaller.

The beauty of a bigger turbo is that you can always crank the boost up when you get tired of a specific power level. It's nice to have room to play with a turbo. Don't get too big of a turbo...but don't get a tiny one either.

10-24-2009, 05:08 PM	#1
jdm_dean Join Date: Oct 2009 Location: Raleigh Age: 22 Posts: 2 Trader Rating: (0)	300rwhp sr20? I know its doable, but how? possible on the stock turbo? and do you need to upgrade fuel pump, injectors at the level?

10-24-2009, 05:17 PM	#3
HPballer76 Zilvia Member Join Date: May 2008 Location: Greensboro N.C. Age: 18 Posts: 209 Trader Rating: (6)	great first post. but im bored so s15 t28 550cc injectors metal headgasket arp headstuds z32 maf and a tune should get you there. __________________

10-24-2009, 05:30 PM	#4
Ceepo Premium Member Join Date: Jan 2008 Location: Cedar City, Utah Posts: 1,247 Trader Rating: (6) Rides Gallery: Ceepo	Search is your best freind, if you ask things like that your not gonna like it here long, people dont like to spoon feed others... __________________ 1995 240sx SE (current)

10-26-2009, 01:51 PM	#10
HPballer76 Zilvia Member Join Date: May 2008 Location: Greensboro N.C. Age: 18 Posts: 209 Trader Rating: (6)	^^ people run well over 300 all the time on stock bottom ends.... __________________

10-26-2009, 01:59 PM	#11
spooled240 Zilvia Junkie Join Date: Mar 2008 Location: Hesperia, CA Age: 21 Posts: 355 Trader Rating: (0)	hell people run 300 whp on stock ka24 internals lol i heard composite stock/felpro headgaskets hold up well for 300 whp so a metal hg shouldn't be entirely necessary __________________

Sponsored Links
Remove these by purchasing a Premium Membership with Zilvia.net!

10-24-2009, 05:12 PM	#2
fcdrifter20 Zilvia Addict Join Date: Nov 2007 Location: riverside, ca Age: 21 Posts: 992 Trader Rating: (7)	many many threads about this already man just search and pooof u get a huge list off threads with answers to ur question

10-26-2009, 12:53 AM	#6
steve shadows In time-out for misbehaving. Join Date: Aug 2003 Location: LA and OC Posts: 7,409 Trader Rating: (3)	No The stock T25, nor the T28 will ever get you anywher close to 300 WHP (on a real dyno at least) You will need a GT2871R at least

10-26-2009, 02:04 PM	#12
boostbyyou BANNED Join Date: Oct 2009 Location: Raleigh area NC Age: 21 Posts: 21 Trader Rating: (0)	ive made 350whp on stock HG and head bolts and never had a problem.. gt2871r .64, 555cc injectors, z32 maf, chipped ecu with all of the little bolt ons and you have 330whp.... next thing in the way of making power is cams. if you do cams please get valve springs. I recommend BC for cams and springs.

10-26-2009, 04:29 PM	#13
HPballer76 Zilvia Member Join Date: May 2008 Location: Greensboro N.C. Age: 18 Posts: 209 Trader Rating: (6)	^^ hey your in raleigh! thats not to far from me. im about to be running the same setup is you. who tuned your ecu? and what boost level did you make 350 on? __________________

10-27-2009, 08:02 PM	#14
brian3676 Leaky Injector Join Date: Oct 2006 Location: portland Age: 22 Posts: 99 Trader Rating: (1)	injectors, 2871r, z32 maf, 255 fuel pump with a power FC will get you there, internals are all fine as is, at MOST i would recommend a head gasket and head studs, but i know plenty of people runnin 300 with out it.

10-27-2009, 09:57 PM	#15
loucal Join Date: Aug 2004 Location: long island Posts: 5 Trader Rating: (0)	Honestly tunning is key on this. I made 300whp and 300 lbs/tq with 550's Aem ems 3.5 bar map sensor and BPU's. This was on a s14sr20det stock turbo at 18psi. So its very very possible and thats with 11.2 afr's. Just find a good tuner. -lou

10-27-2009, 11:32 PM	#16
jdm213 Leaky Injector Join Date: Sep 2009 Location: los angeles Age: 19 Posts: 74 Trader Rating: (0)	yeah but it aint made to last and its risky, i prefer to be safe rather than sorry and something that nicely rebuild offcourse will make more power!

10-30-2009, 05:56 PM	#17
blkkouki Join Date: Sep 2009 Location: Ft Polk, LA Posts: 28 Trader Rating: (0)	I would do the GT2871r, Apexi metal head gasket, HKS SARD or Nismo 550cc injectors, ARP head studs, and get it tuned. 300hp can be had without doing the head studs and head gasket, but it will help to ensure reliability.

11-01-2009, 03:06 PM	#18
S13Disco Leaky Injector Join Date: Aug 2005 Location: RIALTO, CA Posts: 123 Trader Rating: (0)	my setup...stock block and head, t3/t4 turbo, Walboro 255lph fuel pump, 550cc injectors, FPR, Z32 Maf, SAFC-II for tuning.... made 302HP and 273ft-lbs of torque...all i have to do is get PowerFC and retuned and ill have higher numbers.... SAFC-II is maxed out...tuned on a dynojet __________________ [/SIGPIC] 300RWHP

11-02-2009, 04:38 AM	#19
Omarius Maximus Zilvia Junkie Join Date: May 2005 Location: San Diego Posts: 472 Trader Rating: (0)	you can use a small turbo or a big turbo for 300whp. The difference will be in the spool/transient response and the safety margins per whatever fuel you're running. A 50 trim t3/t4 will make 300whp in it's sleep on low boost...while being damn near it's peak in compressor efficiency...which means that the margins for error on pump gas are much larger. Detonation threshold his much farther. The larger t3 turbine housing and wheel also help to decrease backpressure in the topend. You can hit 300whp on a 28r....and it'll have insane response...but the safety margins on pump gas are much smaller. The beauty of a bigger turbo is that you can always crank the boost up when you get tired of a specific power level. It's nice to have room to play with a turbo. Don't get too big of a turbo...but don't get a tiny one either.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode