Stock Motor - GT28R questions.

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Hot_Wheelz
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Stock Motor - GT28R questions.

Post by Hot_Wheelz » Thu Dec 23, 2010 11:49 pm

Hey there.
I have a 91 240sx KA24DE turbo. It has a GT28R @ 6psi. Dyno'd at 187 HP. My question is on the stock internals how much boost am I safe up to with this turbo. I've been thinking about turning it up with a manual boost T to 10 PSI and see what kind of numbers I can get on the dyno. Any suggestions etc. very welcome.
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TanManS14
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Post by TanManS14 » Fri Dec 24, 2010 12:01 am

Necessito clase de engine management... tetas.. Injectors es mas pequeno o grande?...culo queso
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Post by Hot_Wheelz » Fri Dec 24, 2010 12:43 am

LOL english.. do you speak it??


However I think I got "ECU?" and "injectors?"

...and my reply is MegaSquirt and SR20 370cc
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Post by TanManS14 » Fri Dec 24, 2010 1:11 am

No trabajar con mas que ~200hp con 370cc injectors. Neccesito grande injectors por mas boost. Limite es mas o menos 12-14psi sin riesgos. Me gusta chile rellenos, me gusta el arbol en tu culo. tirarse un pedo el sonido.
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Post by all shal perrish » Fri Dec 24, 2010 1:16 am

you could just run as much as that turbo can handle, just un hook the wg line and you should be fine
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Post by racebreads13 » Fri Dec 24, 2010 1:01 pm

well we should all smoke sum crack too!

seriously you'd probably be safe at 10psi from what ive read but put some 440cc or 550cc and no worries lol
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Post by Hot_Wheelz » Fri Dec 24, 2010 1:15 pm

I seriously don't understand anything that TanManS14 is saying.. and I'm not even sure what language it is to find an online translator.

would 10 psi with the 370cc injectors be okay? whats the most people are running on stock internals?
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Post by kjones » Fri Dec 24, 2010 1:47 pm

TanManS14 wrote:No trabajar con mas que ~200hp con 370cc injectors. Neccesito grande injectors por mas boost. Limite es mas o menos 12-14psi sin riesgos. Me gusta chile rellenos, me gusta el arbol en tu culo. tirarse un pedo el sonido.
Sheesh

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Post by Hot_Wheelz » Fri Dec 24, 2010 1:55 pm

TanManS14 wrote:No trabajar con mas que ~200hp con 370cc injectors. Neccesito grande injectors por mas boost. Limite es mas o menos 12-14psi sin riesgos. Me gusta chile rellenos, me gusta el arbol en tu culo. tirarse un pedo el sonido.

Spanish to English translation


Do not work with more than ~ 200hp with 370cc injectors. Large Neccesito injectors for more boost. Limit is roughly 12-14psi safely. I like chile rellenos, I like the tree in your ass. throw a fart sound.

LOL
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Post by TheOne » Fri Dec 24, 2010 1:58 pm

we'd have to know more info as far as the rest of the setup.

TanManS14 is just typing bad spanish, like he used a translator or something. but he was sayin that you could prolly do ~200hp with 370cc injectors and that you would need bigger injectors to run 12-14 psi. and that he likes stuffed chile? something about his ass and the sound of farting.

lol. you should be ok with 10psi on 370cc injectors tho but its better to post the rest of the setup.

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Post by kjones » Fri Dec 24, 2010 2:03 pm

Hot_Wheelz wrote:
TanManS14 wrote:No trabajar con mas que ~200hp con 370cc injectors. Neccesito grande injectors por mas boost. Limite es mas o menos 12-14psi sin riesgos. Me gusta chile rellenos, me gusta el arbol en tu culo. tirarse un pedo el sonido.

Spanish to English translation


Do not work with more than ~ 200hp with 370cc injectors. Large Neccesito injectors for more boost. Limit is roughly 12-14psi safely. I like chile rellenos, I like the tree in your ass. throw a fart sound.

LOL
LOL! Pretty funny

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Post by Hot_Wheelz » Fri Dec 24, 2010 2:06 pm

-msd blaster ss coil
-short shifter
-GT28r turbo
-full stainless 3" exhaust
-FMIC
-aluminum rad
-AC delete
-Megasquirt ECU
-LC1 wideband with gauge
-Knocksense MS knock sensor, tied into the ECU for automatic timing pull
-sr20 370cc injectors, cleaned and flowtested
-taylor battery box in trunk
-autometer boost, oil pressure, water temp gauges
-Bosch BOV modded to open atmosphere (proud of this, more responsive than an ssqv but no compressor surge either)
-electric fan mod
-infiniti q45 front brake upgrade
-fairly new Excedy clutch, master cylinder and slave cylinder

this is the turbo, on the right. The one on the left was the old turbo.
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and this is the engine bay.
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Post by TanManS14 » Fri Dec 24, 2010 4:29 pm

Dont forget the first one man, butt cheese.

But yea, i wouldnt run more than 14psi or so. get bigger injectors, idk why you're running 370cc's with megasquirt.
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Post by Hot_Wheelz » Fri Dec 24, 2010 5:02 pm

what do you mean 370cc injectors with mega squirt?
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Post by TanManS14 » Fri Dec 24, 2010 5:08 pm

Meaning injectors arent expensive. And if you have a standalone there's no reason not to change the injector size for 100 or so bucks. Rather then sit there and worry if you have enough injector for x amount of boost.
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Post by Hot_Wheelz » Fri Dec 24, 2010 6:10 pm

well it is something to look into but as I don't have any right at this moment there's not much I can do.. so 10 psi is about as high as I want to go then?
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Post by 8-bit » Fri Dec 24, 2010 6:11 pm

My gt28r overboosts to 9psi regularly. It appears to go lean from 9 and up with 370cc injectors. I definitely want a new set of dw injectors soon. Looking to get 740cc and produce some more tunes to share.

Its a fun turbo but I want a t3t04e more.
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Post by Hot_Wheelz » Fri Dec 24, 2010 7:50 pm

what are you using for ECU with your GT28R?
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Post by zenki-des » Fri Dec 24, 2010 11:00 pm

8-bit wrote:My gt28r overboosts to 9psi regularly. It appears to go lean from 9 and up with 370cc injectors. I definitely want a new set of dw injectors soon. Looking to get 740cc and produce some more tunes to share.

Its a fun turbo but I want a t3t04e more.
i have a t28 from a s14sr close to a gt28 hit 9lbs a couple times but never seen anything close to lean are your injectorrs sr injectors or dw 370cc?
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Post by Hot_Wheelz » Sat Dec 25, 2010 12:22 am

SR injectors..
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Post by 8-bit » Sat Dec 25, 2010 12:14 pm

I use nistune, sr injectors
http://www.areasoundmusic.com

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Post by street_240sx » Sat Dec 25, 2010 4:31 pm

sounds about right that 370s are limited to 9-10 psi. im going to run 780cc on a t3/t4 so i should have to worry haha. get some 550 at least
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Post by Hot_Wheelz » Sat Dec 25, 2010 5:19 pm

I found some "somewhat local" 550's for pretty cheap.. unless someone down south wants to ship me a set free from down there haha
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Post by p00t » Tue Jan 04, 2011 8:25 pm

How did you have it tuned? 187 is very low for this setup, you should be in the low 200's

Not raggin on you but there may be some issues that need ironing out first.
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Post by redpotatoes » Wed Jan 05, 2011 9:35 am

I was running 10 psi with my gt2560r on 370cc, made 205whp at 10 psi.
Currently running a gt2871r .86 with 555cc, made 307whp at 14.5psi.
Stock block.

You can up the boost to 10 psi with the 370cc on stock block but make sure you have a good tune.
Last edited by redpotatoes on Wed Jan 05, 2011 10:44 am, edited 1 time in total.
KA24DET GT2871R .86 Setup:
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Post by Jordan Gladman » Wed Jan 05, 2011 10:39 am

I ran that turbo once, its pretty awesome for street driving, I dyno'd 253hp and 282tq @ 18psi w/ 460cc injectors. You could probably run the 370s @ 15psi, or higher if you ran meth injection. Only a wideband will tell you how much boost you can run.
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