Forgive me but I am entirely ignorant to turbo specs and need to know what i am looking for when looking at turbines. before the flaming begins, I do know alot about a little. what i dont know, and what i am looking for are the internal specs to a hybrid turbo (3/4) that will reach my goal. the vehicle is a 96 gs-r that will be built with either 9.1/9.5.1/10.1 depending on the outcomeof this thread and many other forms of research combined. i was thinking with a little higher compression it might help spool faster but put a limit on how much boost i can run.


i am looking for a turbo that starts to make power at around 2500 and puts down about 300 HP near 7000 at appx 9 or 10 psi. and somewhere in the neighbor hood of 250 @ 6 or 7 psi. I really want a turbo that acts like an OEM turbo in where it makes boost and how smoothly it makes boost, let me know what you suggest for the turbine. i understand alot of the "smoothness" will be in the tuning, but the turbo has to spool low and run long. i dont really care what it will make over 12 psi because i will never push it beyond that.


let the education begin if there are parts of this that are un realistic, let me know



Modified by ILuvJDMITR at 1:17 AM 9/19/2004

 

no help?

 

For example, what the hell does this mean??

HKS GT2835 - 380/400/410 PS Output
COMPRESSOR:
-Wheel- 48/52/56 Trims -
49.3/51.2/53.1 inducers / 71.1 Major
-Housing- 70 Inlet / 50 Outlet - 0.50 A/R
TURBINE:
-Wheel- 84 Trim - 56.5 Major / 51.8 Exducer
-Housing- GT25 inlet / Outlet spec:
Internal GT28; 0.64, 0.86 A/R
External GT30; 0.61, 0.73, 0.87, 1.01, 1.12 A/R

 

waiting....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ILuvJDMITR &raquo;</TD></TR><TR><TD CLASS="quote">

I really want a turbo that acts like an OEM turbo in where it makes boost and how smoothly it makes boost, let me know what you suggest for the turbine.

Modified by ILuvJDMITR at 1:17 AM 9/19/2004</TD></TR></TABLE>

What factory turbo cars are you talking about? I absolutely hate how most oem turbo cars feel. A dsm or a 1.8t vw is a good example of a power deliverly that sucks IMO and I can only imagine how bad it would be around 300whp.
I would suggest riding in or driving a turbo honda first to help you form an idea of what they feel like.

as for the turbo specs go, just search around here. there are probably 100s of threads explaining each part.

 

i just want something that spools low and adds power smoothly till redline, i will sacrafice huge power gains to achieve this, and lets not be a smart *** and tell me to get a supercharger. from what i gather a low trim compressor and a high trim turbine will give me the effect I want at low boost, and this seems to be the only turbo I can find that is external wastegate that is 48/84 or close. it seems like what i want is a gt28r bb but i cant find one without an internal wastegate


HKS GT3037 - 420/440/470 PS Output
COMPRESSOR:
-Wheel- 48/52/56 Trims - 52.8/55.0/57.0 Inducers / 76.2 Major
-Housing- 70 Inlet / 50 Outlet - 0.60 A/R
TURBINE:
-Wheel- 84 Trim - 60.0 Major / 55.0 Exducer
-Housing- GT25 inlet / External GT30 outlet; 0.61, 0.73, 0.87, 1.01, 1.12 A/R

available through


Part No. Application Trim A/R Flange Type Wastegate
Type Price
1401-RA107 *General Application* 48T 0.73 T25 Flange External

 

well first and foremost dude don't decide on your compression by reading on honda-tech..... half the 'information' on here is user specific, inaccurate, or partially true.

I'd suggest reading some books and researching engine dynamics and turbocharging in general...and certain aspects specifically..IE: Correlation between Ignition Timing and Compression, and how it factors into detonation, egt's, etc..A/R and trim of turbos..Pressure Variables, Intake Air Temperatures, etc.

Aggressive Cams aren't very good for reliability on a turbo charged car...FYI (Saw in ur WTB thread)

12PSI on a puny *** t20 isn't gonna be the same as 12 PSI on a SC61..Like I said before, research turbocharging in general.

why do you choose 300? It can easily be done on stock GSR internals with only a headgasket/studs...(ASK INLINE PERFORMANCE SPRINGFIELD VA)And shooting for numbers is pretty dumb when you don't own a turbo car already..U may be pretty satisfied with 200 for a little while.. and as for this comment below.... most people say that but end up doing it anyways. lol

[QUOTE=ILuvJDMITR]
i dont really care what it will make over 12 psi because i will never push it beyond that. [quote]


Oh and to answer your question.... GT28R is the turbo that comes with the edelbrock SOHC Y8 kits....It comes with an internal wastegate..Its a nice turbo..I eventually plan on running a GT28RS..14psi hopefully high 200's with equal torque.

 

up

 

bump

 

go ask a mechanic if the info above isn't enough...some people think honda-tech is thepeoplewhodesignfactoryhondas.com

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ILLICON3000 &raquo;</TD></TR><TR><TD CLASS="quote">go ask a mechanic if the info above isn't enough...some people think honda-tech is thepeoplewhodesignfactoryhondas.com</TD></TR></TABLE>

well all of the motor dynamics isnt my responsability, i am going to hand my builder a gt series turbo of my choice and make them build around that, my question still remains, what turbo specs should I be looking for to spool real low and make smooth power all the way to the top?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ILuvJDMITR &raquo;</TD></TR><TR><TD CLASS="quote">Forgive me but I am entirely ignorant to turbo specs and need to know what i am looking for when looking at turbines. before the flaming begins, I do know alot about a little. what i dont know, and what i am looking for are the internal specs to a hybrid turbo (3/4) that will reach my goal. the vehicle is a 96 gs-r that will be built with either 9.1/9.5.1/10.1 depending on the outcomeof this thread and many other forms of research combined.
</TD></TR></TABLE>

and dont forget, the bold portion was included in the origional post. the part I am looking for here is opinion and practical useage on the street which u cant really get from a book about engine dynamics and turbos.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ILuvJDMITR &raquo;</TD></TR><TR><TD CLASS="quote"> it seems like what i want is a gt28r bb but i cant find one without an internal wastegate
</TD></TR></TABLE>

Contact http://www.atpturbo.com/

They cast exhaust housing for the gt28rs so it can be externally gated and be compatable with a t3 flange.

Got my gt2871rs from them

 

i would strongly agree with your idea to run the GT3037/71 turbo. We have used these on a couple cars lately and have been pleasantly surprised! Excellent power bands with a very early spool.

Without a doubt, one of the better turbos around. We have some pretty good pricing on them right now if you need one.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Full-Race Geoff &raquo;</TD></TR><TR><TD CLASS="quote">i would strongly agree with your idea to run the GT3037/71 turbo. We have used these on a couple cars lately and have been pleasantly surprised! Excellent power bands with a very early spool.

Without a doubt, one of the better turbos around. We have some pretty good pricing on them right now if you need one.</TD></TR></TABLE>

how early is very early? and have you done one on a b series

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ILuvJDMITR &raquo;</TD></TR><TR><TD CLASS="quote">

how early is very early? and have you done one on a b series</TD></TR></TABLE>

 

dunno if this is any help. but i'm somewhat knowledgeable about forced induction, but like you i don't know how to read specs for crap. I have a drag III setup and teh turbo i think is somewhere in the.60 trim range. huge top end but laggin down low i'd say. in my app, nearly no boost till 4000 rpm. but you probably want something bigger than waht comes in the greddy kits. those things have fast and early spoolup but are somewhat lacking in the top end. I'd think a smaller t3/t4 in the 50 trim range taht is ball bearing would be great for you.

 

perfect comparison on a stock gsr motor with our turbo kit

https://honda-tech.com/zerothread?id=961203

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95stangkillah &raquo;</TD></TR><TR><TD CLASS="quote">... I have a drag III setup and teh turbo i think is somewhere in the.60 trim range. huge top end but laggin down low i'd say.</TD></TR></TABLE>

sorry man, but you are a little confused about what you are talking about... you have a .60 a/r HOUSING not a turbo (a/r is not the same as trim) and the reason it lags so bad is becuase you are using a drag kit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Full-Race Geoff &raquo;</TD></TR><TR><TD CLASS="quote">

sorry man, but you are a little confused about what you are talking about... you have a .60 a/r HOUSING not a turbo (a/r is not the same as trim) and the reason it lags so bad is becuase you are using a drag kit.</TD></TR></TABLE>

Yup there you go, I really don't know crap about specs. lol. The car came with the kit, and since I've had it I learned a lot more about FI. still learning everyday by hanging out here in the FI forumI do wonder if changing the turbo would help a bit in my case or is the drag kit just hopeless without changing the manifold?

You obvously do know what you're talking about.

 

bump

 

The turbo you want to get is Garrett T3/T04B. Spools really fast and has alot of top end power. On my single cam made 265 hp on 12 lbs of boost, and ran 11.905@119mph could've done alot better but had traction problems, on a DOHC would make more hp.

F/S: Garrett T3/T04B turbo Good for 400-450hp
$480+shipping or pick up. Got 2 left

Trim Size: H-3/AR. .48
Inducer Diameter: 2.298
Exducer Diameter: 2.750
Flow Rate: 49 lbs/min

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RockinSOHC &raquo;</TD></TR><TR><TD CLASS="quote">The turbo you want to get is Garrett T3/T04B. </TD></TR></TABLE>

why does he want a t04b over a t04e??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Full-Race Geoff &raquo;</TD></TR><TR><TD CLASS="quote">

why does he want a t04b over a t04e??</TD></TR></TABLE>

Well the only reason I would see is to use a 60-1 which is from the T04B family other than that, I wouldn't!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Full-Race Geoff &raquo;</TD></TR><TR><TD CLASS="quote">

why does he want a t04b over a t04e??</TD></TR></TABLE>

appaerntly i want it because he is selling it