just run 1 turbo unless yer really ready to fab alotta shit

 

I'd go turbo... More HP per pound of boost, due to the parasitic drag a supercharger has, easier on the engine, and turbos tend to be a little more driveable too. As far as size, goes, depends on how much power you want to make. I would think a t3/t4 hybrid, but with twins, that may be too much turbo for what you are looking for.

 

i would definately go turbo over a s/c,

 

:bah: Turbo. :bah:

 

now, should i go twin turbo or just one single turbo for the application for pulling out of corners... now when i say pulling, im saying for modest fun. maybe like 10-14psi and 14 being like "**** your integra bitch"... (blue moon) and when i say twin turbos, im thinking less stress per turbo. thats why i want to go with two turbs, less stress on each. I dont care about exhaust, i know how to blow a torch... yeah, a torch and nothing else so help me... god?

so you say that a t3/t4 hybrid would be cool? i could get those at a junk yard. im totally down to rebuild some twins. I honestly want an opinion though, would twins be overkill, or would it just be a lot of lag at the begining? because the cam that i got starts thrusting at 2000RPM.

 

Actually a smaller pair of twins will spool faster than a larger single. When choosing your turbo, look into the CFM, as much as you look at the total boost it can make. The CFM is where your HP truely lies. Of course a larger turbo will have a cooler dischage temp, which will allow you to run more boost/timing, but you will have a slower spool. The newer turbos do spool faster thugh... If I were you, I'd go to a few different turbo websites to do a little research on what turbo will fit your needs the best.

 

i would say to go one single turbo ... if your worried about size, go t/3 it will spool quick enough and will give you plenty of boost . But i would recomend a t/3-t/4

if you do decided to go twin turbo you are looking into extensive fab work making manifolds, runnning oil lines, runing intercooler and charge pipes, and worring about space. Reomendations for small quick spooling turbos to use for twin setup - is TD04 9B's off a 3000gt VR-4 or dodge stealth Twin Turbo,or using TD05 20G's or something

another benifit to doing single turbo is efficiency, a sinlge turbo setup is much more efficient than a twin turbo. As stated in a previous post, you willbe able to boost higher as well

either way good luck, and nice work so far!!

 

just as a reference, the turbos in my stealth Twin Turbo spool at about 1500 rpm's and are fun BUT they let off HUGE at about 4500 rpm's, but i have my engine built enough to where it keeps gaining all the way to redline (7000 rpms)

i think the larger td05's youd be a better bet, many people in the 3/S world convert to TD05

thats my .02

 

i have a single turbo volvo 2.1L and it does a kick ass job with its t3. However, I dont know if the turbo will last as long.... what do you all think?

 

It's not a matter of if the turbo will last as long, it's can the turbo supply the CFM you need. I would think that a t3/T4 hybrid is the smallest you want to go for a 4.3... of course that also depends on the trim of your compressor wheel too. A t/3 could be trimmed to keep up, but concider that the smaller turbo will create much higher air charge temps which will limit how much boost you can use, and how much timing you can run without having problems with detonation. If you go to the turbonetics web page, they list the flow charactoristics of different turbos, with different trims, might want to check it out.

 

turbonetics .... excellent site

 

I'm curious as to how much hp you wanna make? That will dictate what turbo you should
use also. PEACE>Tony

 

I'm curious as to how much hp you wanna make? That will dictate what turbo you should
use also. PEACE>Tony

well you see, im looking to make good high-low end power and a solid mid range. I would have to say ~300bhp. I plan to get a digital boost controller, so maybe when im straight-lining i want to run at about 320 perhaps, if realistically possible. I just think that the garret T-3 would be weak, and would be overworked for the application. Nissan 300zx's have twin turbo v6s and they're very reliable. what do you think?

 

well you see, im looking to make good high-low end power and a solid mid range. I would have to say ~300bhp. I plan to get a digital boost controller, so maybe when im straight-lining i want to run at about 320 perhaps, if realistically possible. I just think that the garret T-3 would be weak, and would be overworked for the application. Nissan 300zx's have twin turbo v6s and they're very reliable. what do you think?

Well those 300zx's live in the high rpm world.Our engines in stock form rev to 5600 rpms.
If you notice in my sig, I'm using a t3/t4 hybrid turbo from Innovative Turbo. It's good for 350
hp on a stock engine.The bottleneck in these engines are the injectors which can't be changed in the mpfi intakes. I've gone with a custom made Edelbrock#2114 with 65lbs. injectors. I think you would be better off running a single turbo with around 6~7lbs. of boost
non intercooled. PEACE>Tony

 

i agree completely .... except i would intercool, and upgrade injectors and run 8-12 psi

but single turbo is the way to go

 

i talked to a guy about turboed 4.3 and what i would do (10PSI or less, 200whp ish goals) he suggested T3 "super 60" and a little tuning with a FMIC/converted SMIC would do me well..but thats on my low mileage 03 and just for shits n giggles

 

i talked to a guy about turboed 4.3 and what i would do (10PSI or less, 200whp ish goals) he suggested T3 "super 60" and a little tuning with a FMIC/converted SMIC would do me well..but thats on my low mileage 03 and just for shits n giggles

Now, do i absolutely need to change the intake, because with forced induction, from my understanding, the size of the runners doesnt really matter since the cylinders are not pulling the air manually (so to speak). I think I will go with a Single turbo setup, (ill get the good dimensions from turbonetics and then ill go to the wreckers, find one and rebuild it ). I think I will go with an intercooler just because all of my cars were a little bit more dependable on the hill climbs with an intercooler.

Also, I plan to have a stand alone fuel manager and spark manager. Any recommendations for brands? i was looking at mega squirt (pretty cool). I want something i can plug into my computer with a serial cable and get real time statistics with tuning software. Im really puzzled about throttle body size, and the whole manifold deal. Is it neccessary to change the diameter of the throttle body and should I change my stock aluminum intake manifold to an aftermarket brand?! As far as fuel injection goes, I need to pass smog in California (-dred-) but i figure that would be completely tangible considering i am running a standalone fuel and spark managenet.

 

I built a twin turboed 72 montecarlo using t3/t4 hybrids. I got the turbos from 3.0 litre mercedes diesels from the junk yard. The compressor housings are t4ob housings with a compressor wheel that is close to a v1 trim wheel. So in theory it is capable to make 800+ horse power. I have a total of about a 1000 bucks into my setup. that includes intercooler turbos headders intake carb piping etc. i figure i am making around 600-650 horse power.

 

I built a twin turboed 72 montecarlo using t3/t4 hybrids. I got the turbos from 3.0 litre mercedes diesels from the junk yard. The compressor housings are t4ob housings with a compressor wheel that is close to a v1 trim wheel. So in theory it is capable to make 800+ horse power. I have a total of about a 1000 bucks into my setup. that includes intercooler turbos headders intake carb piping etc. i figure i am making around 600-650 horse power.

yeah but how many hours on your motor can you run full potential. i realize that turbo disiel motors rev higher faster than gasoline turbos. are you saying that a deisel turbo will be better for drifting/ hard technical cornering than a standard gasoline turbine? im not arguing, im just realling interested in what my understanding of diesel turbines have to offer other than higher cfm in the lower band.

 

i agree completely .... except i would intercool, and upgrade injectors and run 8-12 psi, but single turbo is the way to go

I agree also with intercooling.What I meant was that your limit with non-intercooling is 6~7lbs.
of boost max. PEACE>Tony

 

so.. i got this 4.3... ive been doing a lot of work to it recently and i have sort of a delima...
Cam Style:Hydraulic roller tappet
Basic Operating RPM Range:2,000-5,500 RPM
Intake Duration 050 inch Lift:215
Exhaust Duration 050 inch Lift:220
Duration at 050 inch Lift:215 int./220 exh.
Advertised Intake Duration:270
Advertised Exhaust Duration:276
Advertised Duration:270 int./276 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.500
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.510
Valve Lift with Factory Rocker Arm Ratio:0.500 int./0.510 exh. lift
Lobe Separation (degrees):114
ok and then i got these pistons
Bore (in):4.030
Piston Material:Forged aluminum
Piston Style: Dish
Compression Distance (in):1.562
Valve Reliefs:Four
Wrist Pin Styleress fit
Pin Diameter (in):0.927
Top Ring Thickness:5/64 in.
Second Ring Thickness:5/64 in.
Oil Ring Thickness:3/16 in.
ok, now i actually got a cam/timing set from compcams ($903!)
it came with springs, lifters, rods, CAM, and the timing set. ok. Now I have a Question...

I plan to Twin Turbo this motor. What Turbos should I run with this setup? Fuel management and ignition systems. from my understanding with my volvos, if i want to run mechanical injection id have to use a vacuum advanced distributer. I'm not trying to run 15+ psi or anything crazy, im trying to make a nice tuned car that will give me a lot of enjoyment. Throttlebody modifications neccessary? I have aluminum heads, stock. I have a huge intercooler. Any input would be greatly appreciated. thanks =)

i got a eagle talon 2g

t3 t4 sucks ass big 16g is better but if your looking for the jump 20g turbo is badass but i have heard that the t4hybrid does decent but lots of mods to be done i say go single turbo im thinking the same thing to my 4.3

20g turbo or big 16g turbo running 16psi i belive it adds with supporting mods close to 500hp

 

For some reason my gut is telling me to go twin turbo still... imagine a person building a fence with one hand, by the end of the day he will be tired and worn thin from the intense labor. However, if he were to use both of his arms, he would be a little soar after the fact. I have an intercooler that is collasal and I just think that I would benefit much more from two turbos as opposed to a single turbo set up.

this is the intercooler im working with:
http://wwwrsphysse.anu.edu.au/~amh110/Intercooler/VrearBig.jpg


http://www.turbocalculator.com/garrett-t3.html quotes:
"The Garrett T3 turbo is a very popular turbocharger for aftermarket applications. Many different T3 turbos can be found in junkyards, as many in the junkyard turbo movement know. Whether using a used, rebuilt, or new T3 turbo, the T3 is suitable for a wide range of power requirements. In this series are found turbochargers suitable for around 120 - 330 horsepower. With twin turbos on a V6 or V8, you can expect up to 650 horsepower. "

Id rather ask someone with experience rather than going directly to a vender. How big of a trim should i be looking for? i'd rather rebuild them myself than pay ~$500 for new ones. I'm obviously not expecting 650hp from stock crank and rods, obviously.

 

if you rebuild it... take it somehwere and have it balanced!!!!!!! cabt stress that enough .... if you go single t3/t4 you can find them cheap, my roomate just got one off ebay, for his cavalier and i runs awsome!! not sure what he paid but it was cheaper than buying one rebuilding it and paying for it to be balanced

do what you want to do with your engine, ....... its yours, your project

if you do decided to do twin turbo, be prepared to do alot of custom fabricating, and be prepared to have many more things break .......

my opinion is single, but thats my opinion, bc im sure they have a kit for your truck for it, as far as manifolds, charge pipes, etc., like i said before a single turbo will be much more effiecient. Concerning with how hard it has to work or how long it will last, the turbo will be the last thing to go

 

Well the thing is, i just got this welder, and a paycheck =) - so im down to make my own plumbing, however I have a question. Ceramic coating for charge pipes can be done by getting a can of ceramic paint, correct? If it is cheaper, i will do it that way, rather than pay someone to dip it or however they may do it downtown.

Guys, I'm going to run twins. Thanks a lot for your advise, all of you and f.y.i. I'm custom fabricating mounts for a volvo 780 4.3LTTi.

 

Ceramic paint & ceramic coating are totally different.