200ci+turbo

66Sprint6

66Sprint6

Famous Member
Ok,
I know this has been gone over sooooo many times, but Im serious about this. I went out tonight and saw a friends turbo eclipse pullin 16psi and it just rips. I was wondering how many psi I should run with an intercooler to stock pistons etc. Could I run more later on if I lowered my compression ratio and put in forged pistons? This is a daily driver, but I want it to haul! Where would I get some good pistons. Most important question, what would be a good list of parts to start getting ahold of to do this. I want to do a blow through and use an intercooler. Could I limit the boost on say a T3 or T4 turbo with a BOV or boost control then bump it up when I get the proper mods?? Please help, I really wanna do this, I have a layout, I just need reassurance and a list of junk to get. Whats a good turbo, is the T3, T4 better??? Sorry this is sooo long and repetative to alot thats already on here but I want to know for my situation.
Matt
 
What is the intended finish point of the buildup? New-tech (EFI and the lot)? Old-tech with blow-through turbo? 2JZ-GTE transplant with six-speed? :shock:

Some turbo sizing ideas can be gleaned from: http://www.turbofast.com.au/welcome.html
But their sizings are probably based on newer, more efficient designs.

The intercooler and turbo header will be pricey. Admit it, it'd be fun to get just this much hooked up with a gate, for the sound! :twisted:

Visit FullBoost often and stay motivated!

Adam.
 
Yeah, the sound alone is niiice, but yeah, I would like to run a blow through with the Holley 350, maybe move to a 500 sometime. I guess I would have to build a pressure box for the carb. I just want to get it on there and run low boost ill I can handle Ill amounts later on down the road. What are some good mods I can do now that will get the motor ready for it? I was thnking about roller rockers, cam, MSD 6AL etc. Ive done quite and bit, and may look into another head to lower the compression, what would be a good head for that?
Matt
 
Hey,
What turbo do yall recomend, I like the looks of the T3/T4 but I am about to get ahold of a Gerret T3. It needs a housing but it is cheeeap! Should I go for it, or what? What type of boost can the T3's see?? Please help guys, this could be my new turbo to start with. Oh, when I go lookin for a housing for it, what should I look for???
Matt
 
8) the T3 turbo will work fine for what you want. you can always install a T4 or a T3/T4 hybrid later on. as for the amount of boost, keep it under 8 psi with the stock compression ratio and cast pistons, and keep the rpm below 6000. that way the bottom end will last untill you can build a proper turbo motor. since you want a blow through system i would use a popoff valve to control the boost. you will need a boost referenced fuel pump. when you build a proper turbo motor, use forged pistons, 8.5:1 or less compression and you can run 15 psi boost.
 
i would use a popoff valve to control the boost
Click to expand...
Is that the same thing as a Blowoff Valve? :?:

And I did an archive search and found ALOT of information, What I'm thinking is a Blowthrough system with an intercooler, a T3 (for minimal T-lag) running at 8 psi. My engine is bone stock at the moment, but my goal is to run 15-16 psi, after I get forged pistons and whatever else I need.
My question is, is the 8psi going to be alright with my stock engine? Also, any intercooler reccomondations? :P any help would be awesome
 
A lot of guys are going air-air intercoolers currently. Fabbed out of aluminium, in front of the radiator.

As for the pressure - well, the state of your motor will influence that. You may end up with excessive blowby if it's getting old.

Turbo sizing can be gauged off the Aussie "Holden" sixes as they range from 186 to 235 cubes. Most are 202 in³, so the comparo is spot on.

A curve ball: At the end of the day, this is still technically way inferior to the Japanese motors of the same capacity. You can uprate to a 250 and benefit from more cubes, but never expect your 3.2 litres to come close to a 2½-3 litre Japanese motor in power. That's why sometimes using the extra capacity to create more torque at lower RPM can play to advantage. The diff ratios aren't as sexy, but the results still stand out. Look at MTS-250, for example. He makes 10s with a (crossflow) 250 and intercooled turbo.

Adam.
 
Quote:
i would use a popoff valve to control the boost

Is that the same thing as a Blowoff Valve?
Click to expand...

8) yes it is. as for the turbo, the T3/T4 hybrid is a good one to use on a new motor, it uses a T3 turbine section for quick response and a T4 compressor section for maximum airflow. as for the 3.3's not matching the japanese late model turbo's, perhaps with a crossflow head and some serious porting, along with a good efi system and it just may come close.
 
There'd be nowhere near the DIY fun in a Japanese transplant, anyway. A 12 second daily with stacks of power is a good goal. You could rice out the front with a big intercooler, cut bumper and grille and one headlight out for the intake - like "planet speedy" cars. :P Although a sleeper would be great.
 
So if I got a T3 right now, could I upgrade it to a T3/T4 by puttining T4 insides in it later on? Im thinkin of running 7-8 psi stock, maybe even less to keep from screwin things up till I can aford the bottom end rebuild with turbo in mind. Then I would like to be able to run a good deal more boost to turn some heads on the streets and in the parking lots where all the little ricers hang on the weekends. They would never see it comin, but if I have my way, they will hear it, and never forget it. :wink:
Matt
 
running a static cr of 6 to 1 is waaaay to low for a street engine.

that static ratio put thru by holley is ment for a positive displacement supercharger (pds). the pds will make positive boost even at idle a turbo wont..

my own car has a compression ratio of 8.3 to one and thats running 32psi and no the bottom end isnt forged its just running a set of hyperurectic pistons and on 98 RON octane rated fuel.

the pds heat the incoming air up at far greater rate then a centrifugal s/c or turbo.

and when u add a intercooler device (be it water injection or a fmic) the inlet charge again drops.

the ford inline six loves boost, but only cold boost so get ur intercoolng rite on a turbo set up add a efi set up as well run and a boost pressure of 8 psi will be fine on a stnd healthy engine.

the important thing is intercooling and fueling... a standard vg30 turbo from a nissan 300zx is quite happy to make 8 psi with only a standard series 4 mazda rx7 intercooler cooling the intake charge on a stock 200 with a standard c/r.

i am not sure what the c/r is on the 200 cu in but.. it will be round the 8:1 to 9:1 being a older design. and i have run 18psi on 9.7 to 1 c/r engines with only pump gas.

keep the cooling good and the fuelling good and you wont have any dramas

cheers.joe.
 
My Volvo I5 runs around 7:1 with 16 psi...Fun engine. I wouldn't go 6:1, but would think about 7:1 to 7.5:1 to get to 12-16 psi.

Slade
 
i've just done a couple of force fed falcons.

one is a ea 1990 model falcon (ohc) it has a t04 turbo with a fmic a set of larger injectors and a bosch 040 pump out back with the c/r standard 8.8 to one the car is happy to digest 15psi with no dramas the engine is a dead stock 230,000k engine as well. and makes 396rwhp

the other car is a ef 1996 falcon (ohc) it has a vortech v1 s trim blower with a water injection kit on it a 044 pump and a set of 550cc injectors it has 14 psi pumping into it with a c/r of 9.3 to one on a standard 110,000k engine with just a agressive cam and head porting. and makes 470rwhp.

a lot of jap cars also have c/r of the 8.5-9.1 reagion and they pump 2 bar of boost no dramas.

you need good cooling and fuel metering (so that means efi) and you'll be suprised how much boost you can run.


having the c/r lowered is stoopid the drivability is reduced for the sake of 50 extra top end neddies on a street engine, maybe on a race engine i can see why.
cheers.joe.
 
Yeah, 12-16 psi is what my goal is later on down the road. Right now, 8 sounds good. I need a turbo tho, didnt work out with the T3 so now its up in the air, any suggestions, comeone guys! Maybe T3/T4 or is the T3 the best, GM said somethin bout a 300zx turbo. My goal is to run small boost now and eventually hit 16 or so psi without changin the turbo out. Please help. Prices and where to get one would also be helpful!!!
Matt
 
with the c/r i'd say stay right around 8.0:1 for 16 lbs of boost. For a gasoline engine a c/r of 17:1 is about the hghest practical. higher than that and you start to run into parasitic loses greater than your gains trying to spin the motor over. That chart has 8.0:1 static crossing 16.8:1 effective at 16 lbs boost.

Justin
 
66sprint6,

a 300zx turbo is a nissan one (its a garrett style one) they have a large exhaust housing on them makinging it perfect for the ford i6 they are essentialy a small t04.

they go for $750 australian for a late model one thats in really good nick.

as for the us i couldnt help you for how much.

look around all you japanese import wreckers for turbos the ducks nuts one being a vg30 (300zx 1989-1993) or a ct26 from a 3lt toyota supra (7m engine one so its pretty old by now) they are bloody big for t3's and will be perfect for you future goals..

also the vg30 t3 turbo can be later upgraded for a new style garrett gt30/35 ball bearing 700hp turbo with out changing manifolds or anything (if you ever get that serious).

alternatively a set of t25's or t28 from a nissan will do but will have to be done in a pair (twin turbo set up).

keep clear of the twin set up the bigger single is far better tho.

cheers.joe.
 
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