rotorforce

There is a new k27 on ebay for a porshe 911 and they are asking 950.00

http://cgi.ebay.com/ebaymotors/PORSC...spagenameZWD1V

mort2002

iTrader: (1)

ok guys since my turbo is too small im looking what is a good wise turbo choice.. go all out i dont want to spend like 800 so keep it under that.. thnax

RETed

"You need to pay to play."
Seriously dude, you either gotta save the money or just forget about it for now.

I think you're looking at it as once-I-get-the-turbo-I-can-make-mad-power.
This is not the case.

Just because you can slap on a bigger turbo doesn't mean it'll instantly make more power.
You need to complement the increase in airflow with more fuel.
Not enough fuel and you blow everything up - expensive lesson.
More fuel = bigger fuel injectors, bigger fuel pump, and some way to control all of that mess (cheap - fuel computer, expensive - stand-alone EMS).
On top of that, if you're going to be running over 10psi, a front-mount intercooler is HIGHLY RECOMMENDED - even more money.
If you haven't got it by now, it's big money.
**** gets expensive real fast.

This is why I'm STILL running a (reprogrammed) stock ECU, a fuel computer, and the stock turbo.
To step up to the next level means THOUSANDS of dollars.

Don't even bother trying to do this unless you got $5,000 to burn...seriously.

Maybe we should start with what you got right now?
A stock turbo with the boost cranked up makes for a pretty quick FC...


-Ted

RenofHeavens

TED's right.

The cheapest way to do it would be to buy a completed project...like I did.

7k for a T04'd FC. My next mod will be a GT40, but that's about a year or so off.

mort2002

iTrader: (1)

you know that sounds all good but tell me why i just wiped out my 3rd pos stock mazda piece of **** turbo than?? yea is sounds like a plan but my plans after the turbo are to run it on 5 psi so i dont need to get my 720cc secondaries quite yet ive already got the walbro 255 wich is rewired and the safc 2 and modified the TID and i have a semi truck intercooler ready to get wleded up to go in the front.. im trying to avoid buying anouther worthless turbo. im tired of changing them out and them dieing off above 5krpms... they drop from like 11psi to like 6.. wtf its a piece of **** turbo is all

mort2002

iTrader: (1)

and one more thing why would you buy a car all hopped up unless your lazy i would rather build my 5k 89 tII by my self.. and than when i run at the local track and people are like nice car who did it.. i can say I DID.. not oh i bought it that way.. and ummm i payed 7k for it so i have no idea how to fix anything if it breaks.. I DONT EVEN THINK SO... if you all just tell me what i want to knwo than let me do as i choose.. i bought the car and ill do with iit as i please if that mean i want to put a big *** turbo on it and try to blow it up or race it that is my choice let me make that choice .. its me who is to blame if i f*ck it up.. and if thats what i choose so be it than.

Sideways7

iTrader: (7)

Maybe he likes driving his car and not building it.
As for your car, I agree with Ted this time around.

RETed

Are you buying used units?
If so, then this is a good example of playing Russian Roulette with used parts.

If you're serious about keeping with the stock turbo, you can get them rebuilt.
If you're mechanically inclined, you can even do this yourself with a <$150 rebuild kit.

Do you know how these turbos are dying?
It might be worth it to disassemble the dead ones to see what is going wrong?



Okay, if you're talking about running another turbo at 5psi only, then there is a word or warning...
Turbos are designed to be efficient at a certain boost range.
Stock OEM turbos can be run that low; some of them cannot.
It's possible that you can run a larger turbo but not make more power at 5psi versus the stock turbo.
Why? Compressor maps and efficiency...
That K27 turbo you was talking about might be wild at 18psi, but it will probably not make more power at 5psi versus your stock Hitachi HT-18.



Sorry to disappoint you, but almost all turbos will do this.
It's more a function of your intake / exhaust system and the wastegate control.
All mechanical wastegates are most likely going to do the same thing.

Want to have solid 10psi of boost all the way to redline?
Get an EBC...


-Ted

RETed

I got nothing against that.
In fact, I totally agree with you.
What I'm trying to do is trying to help you with options.
It's very easy to get caught up in the whole different-turbo-thing just to brag.
But we gotta be realistic about it...we're working with a (very) limited budget, and cheap will most likely bite you in the ***.
Sorry to say, but this is reality.
Some people can get away with cheap, but I do not recommend it.

BTW, I don't like buying projects.
I end up tearing all the half-*** **** the previous owner just to redo them to what I feel is "good enough".


-Ted

MaczPayne

iTrader: (5)

I have an 87 T2 that I'm getting to run again. I don't have much money at the moment, so I'm stockpiling. It's not running yet, I want to get everything together and build it right. From my experiences, rotaries do not take lack of patience kindly.

jacobcartmill

iTrader: (6)

i made 360whp@15psi with a t04b vtrim.

thanks guys,

-jacob

edit: damn yankees (kahren seinyan)

mort2002

iTrader: (1)

well byt the time im done with a stock turbo you can grab the turbine wheel and move it in and out about 1/4 of an inch.. its bad enough that the colant seals are leaking by in the turbo and you can hear the water hitting the turbine wheel and evaperating with a hissing noise.. i just tired of them going to **** at this point. and i was only at like 10psi when this happens. well i was at 10psi on all 3 turbos and they all did the same thing.

mort2002

iTrader: (1)

oh yea im also using a ball spring boost controller not the stock set up.

rotorforce

How about visiting www.bnrturbos.com and getting an upgrade that runs on the stock exhaust manifold? You can made good horespower and not spend thousands at this point. They have four different stages check out which one suits your budget for the time being. Ted is right it takes thousands to upgrade to a much larger turbo than stock. Everything else needs to be upgraded as well...

J-Rat

iTrader: (2)

Okay,

Just an FYI but the Holset is a viable option for big turbos, and my friend happens to be running the H1E, which is akin to the HX40. Its a standard T4 flange, and makes some serious boost. If you are serious about running a Holset, I can get you all the info you need.

RAT

classicauto

iTrader: (3)

But were they used or rebuilt?

on the topic of your quesiton - more than likely no one has ran that setup on a 13B, it can be made to work no doubt, but how well is all speculation.

If you're serious about this and have all the bits you say you do - put it together and tell us how good or bad it is......

mort2002

iTrader: (1)

well one of the turbos came on the jdm engine that had under 50k , the onther turbo came off of an jdm with suposably 30k and the last one came off of my buddies 88 TII when he went to a t4

classicauto

iTrader: (3)

how do you know they had 50k and 30k? did you see the odometers on the cars when they took the engine's out? I speak from experience when I say that J-spec dealers with "low KM's verified" usually have ZERO proof that the motors have those miles....only one guy has ever had proof with proper donor car info....and it wasn't that low.

How were the shaft play on all those turbos when they went in? were they like brand new or no?

Either way, I think the most bang for your buck would be a hybrid, there's plenty of documented testimony (many by the people in this thread) that you can make quite decent numbers with a turbo thats costs approx. 500bucks........pretty good bang for your buck.

Just don't forget about all the other mountains of mods it takes to run big numbers

J-Rat

iTrader: (2)

Or two of these:



Big ones. And you will probably need them tonight!

mort2002

iTrader: (1)

NOS is for pussies.. make real power

RETed

Yep, "low mileage JDM engines" is no guarantee.
In fact, it's a crap shot with those motors - try doing a search on the subject, and you'll come across both good and bad stories.

If you don't mind keeping with the stock turbo, just get it rebuilt by a competent turbo shop.
I think you'd be happier in the long run, and this costs a lot less money than messing with another turbo.
If you want a little more power, get a compressor upgrade or hybrid.
BNR does great work.


-Ted

mort2002

iTrader: (1)

well im sick of the stock turbo and that is why im also upgrading..when i started with the turbos that blew up on my car they all felt really well i was suprised when it happend but im really thinking about he bnr stage 4 ro 3 any sugestions on wich on and what you think is better between the two.. and is there any horros stories on the hybrid turbos?/ thanks

classicauto

iTrader: (3)

yeah Im sure there is horror stories....as well as praising testimony.

Bottom line - the hybrid is a good bang for the buck. Don't expect the performance of a full TO4, but you will be able to net some serious numbers...ask J-Rat how his performed...

IMHO - if you want to upgrade the turbo, start with a hybrid...you will see nice numbers and begin getting your feet wet so to speak for a full on upgrade....

J-Rat

iTrader: (2)

I am pretty certain I have already made more HP then you...

mort2002

iTrader: (1)

well we will see how long a nitrous engine lives compared to just a boosted engine.. its just my personal opinon i dont belive in nitrous