How much more power will a GT28RS make on my setup? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Jeratli · 03-26-2007, 05:28 PM

I have a 1990 240sx with an S14 SR20DET. It had an S15 turbo in it until I blew it on saturday Manji drifting leaving thhe car wash. So I acquired a rebuilt GT28RS for $350. I have no choice but to buy this turbo for that price. I was making 340HP to the wheels at 18 lbs. of boost. I have 550cc injectors, Z32 MAF, Enthalpy tuned ECU, Megan manifold, BLitz LM intercooler, Koyo Radiator and an elctronic boost controller and turbo timer to make it all run smooth. Now my question is how much power can I expect to gain with the new turbo and how many lbs. of boost will I be able to safely run. Also, will my existing modifications do the job to make the power I want or will I need to do some more changes?? Thanks in advance for all the help.

wootwoot · 03-26-2007, 08:17 PM

You cant really rebuild a GT28RS so I would feel kinda nervous about that.... If you honestly managed 340whp you would be breaking records people have fought for years.

a GT28RS compared to a GT28R, you will gain about 20extra hp and lose about 20lbft of tq. 340whp with 550cc injectors is extremely dangerous. You must have been on a very generous dyno or are lying. I'll give you the benefit of the doubt and not call you scum. A lot of things in this sure are fishy. You havent been licking salt water cat fish have ya? those things will f you up

s13gold · 03-26-2007, 08:20 PM

damn u blew a turbo drifing out of a car wash???/

wtf. are you SURE.

are you joking?

Jeratli · 03-26-2007, 09:51 PM

No seriously. It was dyno'd in orlando. But I ran 18 lbs. on it everyday. I have no reason to lie. I think the turbo was just worn out after so much abuse. But the injectors were already in the car when I bought it so that may or may not be. Sorry...

DP_Michelle G · 03-27-2007, 01:11 PM

Sounds like you picked up a ebay gt28rs since thats the same price they sell for on there.

340whp on a gt28r you sure about that? Did the person you bought it from tell you this stuff? Are did you take to the dyno urself?

McRussellPants · 03-27-2007, 01:30 PM

340 on 18lbs on a stock S14 motor and GT28RS is bogus city.

Thats 2871 territory

lilredstiffy · 03-27-2007, 02:00 PM

i would stay away from the gt28rs if you want that much power, i blew one on a similar setup manji drifting leaving shoney's

Team Rootbeer · 03-27-2007, 05:47 PM

shoneys is good.

but golden corral is better

wootwoot · 03-27-2007, 06:59 PM

Shoneys makes me sick at the stomach.

smelly240 · 03-27-2007, 07:58 PM

so we're rebuilding ballbearing turbos now? where did you get this mysterious rebuilt potato?

Silverbullet · 03-28-2007, 07:32 AM

die noob/lyer.

Jeratli · 03-28-2007, 05:16 PM

First off, it's LIAR, not lyer. You dumb uneducated FUCK. Second, if you'd pay attention I was making 340 with an S15 turbo, not the GT28rs. I just blew the S15. And you have to replace the entire center housing on the Garret to rebuild it. Which I'm buying from a shop in Gainseville, FL. I just asked a serious question and all of ya'll lil internet punks are trying to call me a liar. Trying to pop a caps lock in my ass. Fuckers! And this comment is for everyone on this thread who dissed me. And thank you for those of you who tried to help.

steve shadows · 03-28-2007, 05:46 PM

ok but back up.

how much are they charging you for the "center" section?

its the center section right?

a true garrett bb CHRA is pricey man.

and you cannot "rebuild" it in the same way you can rebuild a journal bearing turbo.

hella_flushed · 03-28-2007, 06:06 PM

Quote:

Originally Posted by Jeratli

First off, it's LIAR, not lyer. You dumb uneducated FUCK. Second, if you'd pay attention I was making 340 with an S15 turbo, not the GT28rs. I just blew the S15. And you have to replace the entire center housing on the Garret to rebuild it. Which I'm buying from a shop in Gainseville, FL. I just asked a serious question and all of ya'll lil internet punks are trying to call me a liar. Trying to pop a caps lock in my ass. Fuckers! And this comment is for everyone on this thread who dissed me. And thank you for those of you who tried to help.

wtf is "pop a caps lock in my ass?" back on point, lets not talk about somebodies grammar now esp. when, quote unquote, "First off, it's LIAR, not lyer. You dumb uneducated FUCK." grammarwise, a periods not necessary "smart guy"...

Jeratli · 03-28-2007, 06:48 PM

You are correct, but I just wanted to start a new sentence, that's all. But I apologize for losing my temper. That reference towards popping a capslock is meant to make fun of people who act all bad over the internet but are pussies for real. But back on track. I am buying the new turbo already finished. The shop owner had it done to put in a VW, but sold that car. Now, said potato has sat in the shop for a long time. Now it is up for sale for just 350. All I wanted to know is if I will make less or more or the same power. That is all.

Jerat Out!

Silverbullet · 03-29-2007, 06:55 AM

I didn't misread. 340WHP on a GT28R... i dont believe that. Thats more like GT28RS(with cams) and GT2871R numbers, so your lying. You also can't rebuild them.

drifting out of a car wash... your silly little power slide in public areas makes you ricer and you shouldn't own a 240.

But to answer your question, your injectors should be enough for that turbo. With a 28RS, your looking at around 320 WHP without cams.

nlzmo400r · 03-29-2007, 11:08 AM

the gt28rs is very similar to the gt28r out of the s15. Now if its an ebay turbo, no telling how long she'll last, but it should make about the same power; give or take 15whp/tq, but you're definitely in the same ball park. Bolt it up and go have fun again.

Oh, and don't drift out of carwashes. If you're gonna wad up your shit, atleast do it when its dirty

hella_flushed · 03-29-2007, 08:19 PM

Quote:

Originally Posted by Jeratli

You are correct, but I just wanted to start a new sentence, that's all. But I apologize for losing my temper. That reference towards popping a capslock is meant to make fun of people who act all bad over the internet but are pussies for real. But back on track. I am buying the new turbo already finished. The shop owner had it done to put in a VW, but sold that car. Now, said potato has sat in the shop for a long time. Now it is up for sale for just 350. All I wanted to know is if I will make less or more or the same power. That is all.

Jerat Out!

no worries mang. theres a saying that opinions are like assholes, everyone has one. zilvias full of em' so don't take it too seriously. just my .02, late...

hayaimoto · 03-29-2007, 08:22 PM

If you want power, stay away from stock mounted turbos ! =)

statik · 03-29-2007, 10:40 PM

Quote:

Originally Posted by hayaimoto

If you want power, stay away from stock mounted turbos ! =)

GREAT advice, really adding something to the thread here...

340hp @ 18psi on an s15 turbo I will have to call BS, maybe you arent lying, but im sure the dyno was. To answer your question, ~320WHP @ 18psi with no cams seems to be common, with cams maybe 340whp. When I dyno next week i'll let you know (gt28rs with hks step 1 264's)

Jeratli · 04-02-2007, 04:20 PM

Thanks statik. Let me know how much you make and what cams you are gonna use.

*fliprayzin240sx* · 04-03-2007, 12:08 PM

Yah, when i blew my GT2871R, ATP basically just swapped the whole center carrier for the "rebuild" Shiet cost me pretty much a new turbo...$800 iirc.

statik · 04-03-2007, 02:00 PM

Quote:

Originally Posted by Jeratli

Thanks statik. Let me know how much you make and what cams you are gonna use.

Im using HKS step 1, 264/264. The dyno has been put off till next week, i need to fix my boost controller

bigOdom1 · 04-03-2007, 02:15 PM

all this shit sounds made up

sepulchral · 04-03-2007, 02:56 PM

unless your running higher compression pistons on your sr (assuming its an sr) + cams on an s15 turbo you were probably not making 340hp, but if you really really were then kick ass 4 you!

codyace · 04-03-2007, 11:14 PM

17/18 psi on a 28RS with cams and a extrude stock manifold should get you in the 340-360 whp range...

At that powre level, your 550cc injectors are just about maxed out...you still have some room, but I'd say 350 whp about the limit of them.

Lowport SR, gt28rs, GTiR manifold, 40mm external gate, 50lb injectors, Cobra MAF, JWT tune, JWT S3 cams

WILDACEX187 · 04-03-2007, 11:39 PM

but wont the external gate give it more power? he prolly wont be going external gate

JDMClifford · 04-03-2007, 11:52 PM

Quote:

Originally Posted by codyace

17/18 psi on a 28RS with cams and a extrude stock manifold should get you in the 340-360 whp range...

At that powre level, your 550cc injectors are just about maxed out...you still have some room, but I'd say 350 whp about the limit of them.

Lowport SR, gt28rs, GTiR manifold, 40mm external gate, 50lb injectors, Cobra MAF, JWT tune, JWT S3 cams

does the gtir manafold work good on the rwd sr? all lines fit or do you need steel braided lines, for an s13 sr and a s15 turbo?

statik · 04-04-2007, 06:29 AM

Quote:

Originally Posted by WILDACEX187

but wont the external gate give it more power? he prolly wont be going external gate

I dont see how it would give it "more power" as opposed to be able to hold boost better, but ive never had a problem holding 18psi with my profec b

clutch kick drifter · 04-04-2007, 07:40 AM

shoneys #1```~

03-26-2007, 08:17 PM	#2
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 39 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	You cant really rebuild a GT28RS so I would feel kinda nervous about that.... If you honestly managed 340whp you would be breaking records people have fought for years. a GT28RS compared to a GT28R, you will gain about 20extra hp and lose about 20lbft of tq. 340whp with 550cc injectors is extremely dangerous. You must have been on a very generous dyno or are lying. I'll give you the benefit of the doubt and not call you scum. A lot of things in this sure are fishy. You havent been licking salt water cat fish have ya? those things will f you up __________________ I'm from Florida so I'm probably a bit more strange than you

03-27-2007, 02:00 PM	#7
lilredstiffy Zilvia Addict Join Date: Nov 2001 Location: louisiana Posts: 618 Trader Rating: (0) Feedback Score: 0 reviews	i would stay away from the gt28rs if you want that much power, i blew one on a similar setup manji drifting leaving shoney's __________________ KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST

03-27-2007, 06:59 PM	#9
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 39 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	Shoneys makes me sick at the stomach. __________________ I'm from Florida so I'm probably a bit more strange than you

03-27-2007, 07:58 PM	#10
smelly240 Nissanaholic! Join Date: Oct 2006 Location: Philaburbia Age: 47 Posts: 2,137 Trader Rating: (4) Feedback Score: 4 reviews	so we're rebuilding ballbearing turbos now? where did you get this mysterious rebuilt potato? __________________ HREs on a S13 - check, 6262 - check, Girlfriend.... - nope

03-28-2007, 05:46 PM	#13
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	ok but back up. how much are they charging you for the "center" section? its the center section right? a true garrett bb CHRA is pricey man. and you cannot "rebuild" it in the same way you can rebuild a journal bearing turbo. __________________ Like Me on FaceBook !

03-26-2007, 05:28 PM	#1
Jeratli Join Date: Mar 2007 Location: Ocala, FL Age: 41 Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	How much more power will a GT28RS make on my setup? I have a 1990 240sx with an S14 SR20DET. It had an S15 turbo in it until I blew it on saturday Manji drifting leaving thhe car wash. So I acquired a rebuilt GT28RS for $350. I have no choice but to buy this turbo for that price. I was making 340HP to the wheels at 18 lbs. of boost. I have 550cc injectors, Z32 MAF, Enthalpy tuned ECU, Megan manifold, BLitz LM intercooler, Koyo Radiator and an elctronic boost controller and turbo timer to make it all run smooth. Now my question is how much power can I expect to gain with the new turbo and how many lbs. of boost will I be able to safely run. Also, will my existing modifications do the job to make the power I want or will I need to do some more changes?? Thanks in advance for all the help.

03-26-2007, 08:20 PM	#3
s13gold Post Whore! Join Date: Jan 2007 Location: CARSON Posts: 4,240 Trader Rating: (79) Feedback Score: 79 reviews	damn u blew a turbo drifing out of a car wash???/ wtf. are you SURE. are you joking?

03-26-2007, 09:51 PM	#4
Jeratli Join Date: Mar 2007 Location: Ocala, FL Age: 41 Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	No seriously. It was dyno'd in orlando. But I ran 18 lbs. on it everyday. I have no reason to lie. I think the turbo was just worn out after so much abuse. But the injectors were already in the car when I bought it so that may or may not be. Sorry...

03-27-2007, 01:11 PM	#5
DP_Michelle G Zilvia Addict Join Date: Aug 2005 Location: Anaheim/OC Age: 42 Posts: 666 Trader Rating: (0) Feedback Score: 0 reviews	Sounds like you picked up a ebay gt28rs since thats the same price they sell for on there. 340whp on a gt28r you sure about that? Did the person you bought it from tell you this stuff? Are did you take to the dyno urself?

03-27-2007, 01:30 PM	#6
McRussellPants Nissanaholic! Join Date: Oct 2005 Location: Austin, Tx Posts: 2,168 Trader Rating: (0) Feedback Score: 0 reviews	340 on 18lbs on a stock S14 motor and GT28RS is bogus city. Thats 2871 territory

03-28-2007, 05:16 PM	#12
Jeratli Join Date: Mar 2007 Location: Ocala, FL Age: 41 Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	First off, it's LIAR, not lyer. You dumb uneducated FUCK. Second, if you'd pay attention I was making 340 with an S15 turbo, not the GT28rs. I just blew the S15. And you have to replace the entire center housing on the Garret to rebuild it. Which I'm buying from a shop in Gainseville, FL. I just asked a serious question and all of ya'll lil internet punks are trying to call me a liar. Trying to pop a caps lock in my ass. Fuckers! And this comment is for everyone on this thread who dissed me. And thank you for those of you who tried to help.

03-28-2007, 06:48 PM	#15
Jeratli Join Date: Mar 2007 Location: Ocala, FL Age: 41 Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	You are correct, but I just wanted to start a new sentence, that's all. But I apologize for losing my temper. That reference towards popping a capslock is meant to make fun of people who act all bad over the internet but are pussies for real. But back on track. I am buying the new turbo already finished. The shop owner had it done to put in a VW, but sold that car. Now, said potato has sat in the shop for a long time. Now it is up for sale for just 350. All I wanted to know is if I will make less or more or the same power. That is all. Jerat Out!

03-29-2007, 11:08 AM	#17
nlzmo400r Zilvia FREAK! Join Date: Oct 2003 Location: louisiana Posts: 1,248 Trader Rating: (0) Feedback Score: 0 reviews	the gt28rs is very similar to the gt28r out of the s15. Now if its an ebay turbo, no telling how long she'll last, but it should make about the same power; give or take 15whp/tq, but you're definitely in the same ball park. Bolt it up and go have fun again. Oh, and don't drift out of carwashes. If you're gonna wad up your shit, atleast do it when its dirty __________________ 'my drinking team has a racing problem' [email protected] - gt32 .6bar

03-29-2007, 08:22 PM	#19
hayaimoto Zilvia Junkie Join Date: Dec 2006 Location: Irvine CA Posts: 492 Trader Rating: (20) Feedback Score: 20 reviews	If you want power, stay away from stock mounted turbos ! =) __________________

04-02-2007, 04:20 PM	#21
Jeratli Join Date: Mar 2007 Location: Ocala, FL Age: 41 Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	Thanks statik. Let me know how much you make and what cams you are gonna use.

04-03-2007, 12:08 PM	#22
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Yah, when i blew my GT2871R, ATP basically just swapped the whole center carrier for the "rebuild" Shiet cost me pretty much a new turbo...$800 iirc. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

04-03-2007, 02:15 PM	#24
bigOdom1 Nissanaholic! Join Date: Nov 2005 Location: Auburn/Birmingham AL Age: 41 Posts: 1,817 Trader Rating: (4) Rides Gallery: bigOdom1 Feedback Score: 4 reviews	all this shit sounds made up __________________ my car domain that good review thread

04-03-2007, 02:56 PM	#25
sepulchral BANNED Join Date: Mar 2004 Location: Midlothian. VA Posts: 2,050 Trader Rating: (0) Feedback Score: 0 reviews	unless your running higher compression pistons on your sr (assuming its an sr) + cams on an s15 turbo you were probably not making 340hp, but if you really really were then kick ass 4 you!

04-03-2007, 11:14 PM	#26
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 40 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	17/18 psi on a 28RS with cams and a extrude stock manifold should get you in the 340-360 whp range... At that powre level, your 550cc injectors are just about maxed out...you still have some room, but I'd say 350 whp about the limit of them. Lowport SR, gt28rs, GTiR manifold, 40mm external gate, 50lb injectors, Cobra MAF, JWT tune, JWT S3 cams __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

04-03-2007, 11:39 PM	#27
WILDACEX187 Post Whore! Join Date: Jan 2003 Location: QUEENZ, NYC Age: 42 Posts: 3,103 Trader Rating: (4) Feedback Score: 4 reviews	but wont the external gate give it more power? he prolly wont be going external gate __________________ SR POWA COUPE LUVVV!!!

04-04-2007, 07:40 AM	#30
clutch kick drifter Zilvia Junkie Join Date: Jul 2005 Location: TN Posts: 498 Trader Rating: (0) Feedback Score: 0 reviews	shoneys #1```~ __________________ Color of car has not been touched.