Help me pick a turbo! (and supporting items)

[gawdzilla]

i'm running a denso supra tt fuel pump, hardwired to the battery. i've never done official testing to verify that the "fuel hose is running out", but seeeing 94% to keep my AFRs at low to mid 11s for a WOT run to make 400 rwhp seems like a bit much to me.

its tough to find hard statistics b/c most poeple plop in the walbro and call it a day, staying under 350 wheel.

i tried checking the SAU forums for the bigger hp guys, and most people run a sump w/ the single or dual bosch 044's, of course with braided lines.
Modified by gawdzilla at 12:55 PM 10/4/2006

[rbsileighty]

Not sure on all of this logic...

Here's the stats on fuel pumps... posted this a few times before:http://www.stealth316.com/2-fuelpumpguide.htm

As for a turbo... on pump gas (key point) you are going to need something big enough not to need a lot of boost since you're running a 9:1 CR and still make that power

Tial is not a fan of the 3071 internal gate setup... the owner showed me the inside and it ruins a good turbo to make it work.... that is the same turbo I use to want on my 20.

I'd say for what you're looking for GT35R... there is something to be said about matching turbine and compressor wheels. The old truck compressor on a pinwheel turbine idea is for the old T-series logic and not worth the time.

Look out for turbine housing materials as well... iron housings will scale after long exposure to high heat (ie track days). You get what you pay for in a turbo...

One idea is to run a big 16G or a 20G... but you're going to have issues with the manifold unless you go aftermarket... which if you do you might as well go GT series BB.

For the displacement you have... I'd say GT35R with a proper exhaust mani will be your friend on pump gas... with room to grow when you find a 110 pump at a station
Modified by rbsileighty at 7:18 PM 10/4/2006

[rbosacco]

I'd say GT35R with a proper exhaust mani will be your friend on pump gas... with room to grow when you find a 110 pump at a station

the most intelligent idea on here yet. if you are serious about wanting your car to be competitive you cannot go internal gate. they suck. PERIOD. buy a nice external gate. also, aem is the best thing you can do to the electronics on your car. my stock s1 rb25 made 307hp and 323tq last night at 10.5 psi, which was all the stock gate would hold.

if you want your car to be well built with room to turn it up in the future...,you should do a

full race manifoldgt35r880cc injectors aem ems and convert the car to speed density with the aem

it will be exactly what you described and if you get a real aem trained shop to tune the car you will be amazed with how much more drivable the car will be after it is speed density on aem. do it you wont be disappointed...

i run the 3.5bar map and their ait. its worth it. my car is a blast, and stock with a front mount and exhaust.

AEM

[Carl H]

are you ****ing kidding me?map more repsonsive than maf, come on now.the aem is not the end all be all, it has its own set of issues.imho for a drift car the 35r is too large, a 30r .63 would be better.

[Joe]

full race manifold hahaha

their **** is amazing but im not paying 1500$ for a manifold. and a GT35r is too big for road course use. i dont need 500whp.

p.s. the power fc can run speed density too if im not mistaken.

[eh?]

Full race... more like $2400 for the manifold.

RB25 PFC doesn't run map, there is no d-jetro version. The only other version was the "pro" which had soft rpm cut and basic two step.

[Joe]

i stand corrected on the PFC

but full race has approached a couple RB owners in AZ to prototype a manifold for parts and labor. about $1500. hehe

never the less its way too god damnded expensive and ill sacrifice a couple hundred rpm spool time and 2% HP drop using my stock manifold.

same goes with internal wastegate. it works fine. may not be the most efficent but its gonna be an assload cheaper.

[eh?]

Any ETA for the manifold? I just got a fricken HKS manifold damn it.

[Joe]

as soon as someone from az wants to spend 1500ish on a full race manifold haha

so probably never.

[rbosacco]

Howard over at AR FAB setup and tuned my ems in my 240, I have a stock s1 rb25det swap and a front mount. The car runs amazing. the stock gate wont hold anymore than 10.5 lbs after 5500 and the car still made really good numbers! Diveability is so much better now that the car is speed density. I think i need new tires now....



well if you wanted cheap you should have bought an sr20, and if you dont even want to spend enough money to go external gate then whats the point in any of this. your gonna just buy whatevers cheap. so... what upgrades are on your car and what power does it lay out. i know that my car isn't a godsend or anything like that but for a quick tune and how much driveability i gained over the maf i wont ever go back. if you want a cheap manifold buy a 100dollar ebay t3 tubular one and brace it so it wont crack and buy a decent turbo. spend money on a good engine management or just deal with an afc or power fc. end result is that its your decision and no one is gonna change your mind, so what was the point of this topic anyway if you already know what you want to do....

[krayton]

well if you wanted cheap you should have bought an sr20

OH SNAP SON!

you just got served

[Joe]

Howard over at AR FAB setup and tuned my ems in my 240, I have a stock s1 rb25det swap and a front mount. The car runs amazing. the stock gate wont hold anymore than 10.5 lbs after 5500 and the car still made really good numbers! Diveability is so much better now that the car is speed density. I think i need new tires now....

well if you wanted cheap you should have bought an sr20, and if you dont even want to spend enough money to go external gate then whats the point in any of this. your gonna just buy whatevers cheap. so... what upgrades are on your car and what power does it lay out. i know that my car isn't a godsend or anything like that but for a quick tune and how much driveability i gained over the maf i wont ever go back. if you want a cheap manifold buy a 100dollar ebay t3 tubular one and brace it so it wont crack and buy a decent turbo. spend money on a good engine management or just deal with an afc or power fc. end result is that its your decision and no one is gonna change your mind, so what was the point of this topic anyway if you already know what you want to do....

listen up jackass

I may be doing this on a budget, but dont talk down to me. there is a BIG difference between doing something ON A BUDGET and doing it to be CHEAP. I dont have to have the biggest and the best because to be blunt, I dont NEED the biggest and the best. If the internal gate on my IHI turbo is maxed at 450whp, GREAT! ill never reach it.

1) the 100$ ebay manifolds DONT EVEN FIT. so bracing them is the least of the problems

2) for the relativley low power goals i have there is no need to go to a tube manifold/external gate. I'm not trying to squeeze every single horsepower out of the car. i have a goal, im going to reach it.

3) im not spending the money on an external gate because im in the middle of a racing points series here in arizona where the last weekend at the track i spent 700$ between tires, entry fees and travel. my next event is in 2 weeks so i have to do it again. If i want to finish this before the season ends and let me be competetive with the top guys (I'm tied for 3rd, the other people above me are all 330whp+) i cant have this project take me 8 months to complete because i spent 2000$ on a tube manifold or it took full race 3 weeks to add an external wastegate to my stock manifold.

4) i made this thread for suggesions. while yours are ignorant, i will still listen to them. I have no first hand experience doing an upgraded turbo on a RB25 for what i do, so i ask my community for suggestions.

dont be a prick.

[Yellow4g63]

OH SNAP SON!

you just got served

LOL you got served hahahaha

[rbosacco]

listen up jackass

I have no first hand experience

dont be a prick.

i made a good suggestion, just remember you said

I have no first hand experience.

so dont talk down to me about my suggestions. you DONT know what a good idea is. i tried to be helpful, and i'm the prick? hmmmm. ok...... i'll leave it at that....

[Joe]

just because i dont have first hand experience picking a turbo for a full blown track car dosent mean i dont know anything about turbos or how to size them. i DO know the math and i DO know what i need from my setup. real world is different than paper. whats why i made this thread.

let me reitterate my point. budget setup that will get me 400whp.

let me reitterate what you told me. "stop being a cheapass you should have gone sr20" maybe in your twisted mind thats helpfull, but i took that as an attack because im trying to do things on a limited budget because this is the beginning of my racing season.

the reason i made this thread was for input from other members for a well rounded budget 400whp setup. you obviously cant see what im going for, so just stop giving me your "advice".

p.s. way to take 3 sentences out of context.

[the_momo]

i think what the dude was saying is that he has the formula for the fastest motor out there, and we all should bow at his feet.

i bet you have a really incredibly enormous...ego. kamin, forget dumb people. youre a mod. everyone is a big man on the keyboard. im sure itll all work out for the best, and good luck with what direction you decide to pursue.

there is a thing i always tell people about any of the cars ive ever built. "rarely does a 300whp 2800lb car feel slow" the more responsive car is always faster.

really people, if you want to give advice when its asked, give it. if not, GTFOjust a waste of time. and dont be offended when someone with 18 posts gets beat down by someone with 3000 plus. i bet more people are going to side with the one they know.

[RB20DETodd]

formula for the fastest motor out there

money=whp?

[goofynick6]

GT3076R with .63 housing..it will rock

[Eikon]

HOLY CRAP!!! goofynick is back! Welcome back buddy!

[klh6686]

if response is a goal and 400whp is the highest you're looking to attaint i would look into a t3 based gt2871r, i think you can get a t3 internally gated one from ATPturbo. no need to get a turbo to big for the application at hand (gt30r and +) let us know what you go with.

[rbosacco]

i think what the dude was saying is that he has the formula for the fastest motor out there, and we all should bow at his feet.

mmm, no thats not what i was saying at all

i bet you have a really incredibly enormous...ego. kamin, forget dumb people. youre a mod. everyone is a big man on the keyboard. im sure itll all work out for the best, and good luck with what direction you decide to pursue.

nope, no ego at all, my car is beat up but it's fun and i want more. sorry you didn't agree, and that i kind of got offended because he treated my idea like i had leoprosy or something. irregrardless of your closed minded opinion it would work and i am waiting on the same parts for my car as we speak, as i have similar interests in what i do with my car.

there is a thing i always tell people about any of the cars ive ever built. "rarely does a 300whp 2800lb car feel slow" the more responsive car is always faster.

this is true but a 300 hp 2800lb car only feels fast for so long, then it's time to go up. if i put a 35r on my car i'll be able to make 400whp on pump and that is what i want. if i want more i can put race gas in the car and probably make about 550-600. i drive my car on the street and need to run pump most of the time. i have a gt35r on my 2liter integra and actually you would be suprised by how fast it spools, its totally driveble but you can only have so much fun with that much power hitting the ground from the wrong end of the car...

really people, if you want to give advice when its asked, give it. if not, GTFOjust a waste of time. and dont be offended when someone with 18 posts gets beat down by someone with 3000 plus. i bet more people are going to side with the one they know.

i didn't get beat down i just stopped checking this thread because i thought originally, that it would be open to ideas, not that he just wanted approval on what was already in his mind, and there is nothing wrong with that, if that is how he wants to do his car, by all means do it. a smaller turbo at 18-20 lbs might be ok on pump, or, if you run fuel all of the time anyway then i guess its a non issue. you will probably meet your power goal that way, a buddy of mine has a gts-4 corrado with a 2liter 20 valve hybrid motor and he runs a garrett gt30r on it, he has to run race fuel to run above 20psi and at 15 the car only lays down 325 to the wheels. i know that with the extra displacement of the engine in my 240 a 35r would spool the same as the 30r does on his 2 liter car and i could more than likely pull 400 off on pump with ease and that is what i want for my car. i understand if my opinions arent welcome here because i dont have as many posts as you guys but i just chalk my lack of posts up to the fact that most of my time is spent in my shop after work or driving one of my cars. i dont have a job where i can be on the net during the day... sorry... my post count will always be down...

[the_momo]

honestly, i totally agree with you. i have only recently started to post a lot. (laid off for a while, and yeah, my car is a bit of a hike away) so yeah. dont pay any attention to my idiot posts.

my direction, responsive 300whp and then learn to drive. i think that is something that everyone here could benifit from. next spring if i can swing it i am going to try to get some driving lessons. then more track time.

i think that really there is going to be something compromised no matter what you decide to go with. if there were a perfect setup, everyone would be using it. the less stressed parts are, the longer they last, and imho, that would be number one on my list. best of luck. and kamin, if you end up trying a dozen different turbos, be sure to pass the love on down to some fellow rb owners... . im personally looking at a bb garrett 30 series. so many different choices.

[Carl H]

gt30r ftw, as goofynick said... .63ar and that thing will be uber responsive on a 25.and for one thing if the motor is cranking out 325whp at 15psi but if you cant tune it to run 20 on pump then something is wrong there...at 18psi i was WELL within knock limits and egt's looked good, that being said i still will install this aquamist system i have to keep temps down on long pulls.

[Bluefire]

what kind of mods do you have done to your engine so far? fuel? drivetrain? cooling? induction? etc...

-Bluefire

[Joe]

me or carl? lol

[Bluefire]

You Kamin duh....

-Bluefire

[Joe]

lol im never sure

fuel - walboro 255lph, Nismo FPRCooling - Koyo, 2 12" perma cool fans, some custom ducting and blocking platesDrivetrain - RPS MAX clutch (sprung 6 puck), Kaaz 1.5way differential

[Spazz]

gt30r ftw, as goofynick said... .63ar and that thing will be uber responsive on a 25.and for one thing if the motor is cranking out 325whp at 15psi but if you cant tune it to run 20 on pump then something is wrong there...at 18psi i was WELL within knock limits and egt's looked good, that being said i still will install this aquamist system i have to keep temps down on long pulls.

+1 for the gt30r and +1 for the aem ems.

[300Plus]

^^^ I'm with spazz. I'm looking more into AEM EMS myself. Not a turbo buff but the bigger the better.... who cares about spool time..... j/k lol

[Carl H]

seriously the aem is REALLY overrated...the pfc works really well, all the aem does is give you the ability to eff up the motor a hell of a lot faster.