I know the "best" way to go, but I also know the expense. I was given a supra turbo today by a friend, and the flange on it mates right to my hookers. The turbo is a TC26. . my question is, will this thing give any gains at all or just amount to excess back pressure? From what Ive read, it will wind out quickly, but even a short 25-50hp burst is good for me.
Thanks
mike
btw, motor is a 9to1 350 TPI. ported plenum, base and cleaned up 64cc truck heads.

 

I understand what you're asking.. but there's a part that is confusing me.. you say it mates to your header flange.. but isn't that UNDER the car? I'm not a turbo expert, but everyone one of them I can remember, the turbo is in the engine bay (except 650 TT c5 vette by LPE )


How would you rig the downpipe and then the main inlet pipe... intercooled?


sorry, it just has me confused...

 

Have to agree with 12 sec GTA here. It cant be sitting level either. I bet it is all cocked in there at an angle. You wont get the oil to drain that way which is a BAD BAD thing.

My advice would be to get a second one, and try rigging them both up in there somehow.

ARGH! 5th attempt at posting reply...

 

Don't do it.Just invest in a nitrous kit. It's not worth the trouble and expense for the gain you will get using a turbo with a stock non-turbo motor.
A turbo needs to be mounted as close to the exhaust ports on the head as possible.The further away from there, the more turbo lag and less boost.The only good way to do it on a V-8 is to have twin turbos.One on each side.

 

I have a feeling that comment is going to bring up a lot of differing opinions

 

Yeah I guess the SSO Mustang guys with single turbos running in the 7's on 10.5" tires are not doing it right.

Neither are the pro 5.0 guys running 6's. Not a damn thing right.

Next time, dont make a fool out of yourself.

 

well, I can see his point though. If you meant the SMALLER turbos, than yes, 2 are going to be better than one. if you have more $$$ to invest in a larger single turbo, well than obviously that would be great also. Same concept as"I have $500 to invest in my 305,what should I get?" At least 75% of replies will be "350!!" but with the resources at hand, there are better ways to accomplish what you have budgeted and set aside. Not trying to back talk anyone, please understand, just replying. I have since decided the turbo is too smallfor the motor anyhow, so Im going to give it to my wife(rice driver, american lover, thought she bought a dodge avenger(read:mitsubishi eclipse) when she was 16.so were trying to do the best we can being I still owe $9000 on it(YOUCH!!!!)
thanks guys
mike

 

I fully agree.i think turbos are not worth it,especially in drag racing(nitrous cars are most likely to win over turbo).The money you invest in turbos and its acceriores could otherwise be invested in a big displacement motor that would run circles around the turbo motor.If turbos are your thing go for it.as far as the supra turbo , i think your going to need two of em cause there rather small for a 350.
dave

 

Are you guys on crack or something???

Look at this.

Nitrous motor:
High compression (at least 11:1).
Hard shocks on nitrous hits
Have to fill the bottle all the time
If race motor a TRUE nitrous race motor, wont make a lot of power on motor only so stuck to refilling bottle

ALL motor:
high compression. READ: UNSTREETABLE

Turbo: Can run 8's and still drive car down the street. Turn boost down and drive easily. Bottom end still needs to be stout but turbos are easier on motors

You can say what you want about the initial investment of a turbo motor but in the long run it will be faster, easier on the engine, and compared to a nitrous motor, cheaper since you dont have to refill the bottle anytime you want to go race.

 

Ditto what Guido said

 

The Turbo you are referring to is a CT26 and is slightly smaller than a TO4E. The turbo is designed as a top mount turbo, and you could run it on your 350, the problem is that you need 2 of them, or an elaborate piping setup to equalize the exhaust pressure and get the most out of running a single turbo. There are other things to look at as well when looking at turbocharging a motor, such as more fuel, the limits of the airflow system you currently have (MAF or MAP, both will need some tweaking) and you also have to look at the power you want, the manufactureing of the turbo kit with that turbo is not the best idea out there, and here is why, the CT26 is not easily rebuilt and is not designed for your application. The turbo is designed to run 8 psi on a 3.0 ltr motor and has the drawbacks of a small compressor wheel. It is a mass production turbine, so the reliability for anything above stock settings will give a much shorter life, not to mention it is acctually restrictive. The common upgrade to that turbo on the Supra is a TO4E anyways. Plus you have to look at the extra cooling lines and the oil lines that have to be run as well, because it is a liquid cooled turbo center housing. It is a good start and as far as a power adder you will be impressed. just know what all is involved before just bolting it on.

TC

 

Hey, Guido hit the nail right on the head. A turbo motor is going to out perform anything. Just look at your dominent racers in the, forgive me for this, NMRA and NMCA. They are out running everything. The sanctioning bodies are trying to put weight on the turbo cars to even things out but they just turn up the boost and run faster. They are even making separate classes for the nitrous cars because in all reality they cannot compete with a turbo. Turbos are also alot easier on the motors. They don't require as much maintenance(sp ?). Nitrous motors are hard on pistons. Superchargers take horsepower to make horsepower. That makes a turbo more efficient. If I knew how to tune a turbo motor using the FAST injection setup, I would probably run one. I have all the equipment and know how to run nitrous so I that is my thing for now. When I blow the motor I have now, I will make the change over to a single turbo. Hope I won't be doing that for a long time to come.

 

Turbos DO take up power with added backpressure that increases with boost. Its not a free lunch. I dont know if its as much as Blowers but its still there. Do you think that compressing all that air is just free energy? Yes, having a turbo does scavenge lost power that would get dumped out the pipes. But it DOES add backpressure too.

 

Turbo's are still more efficient than a blower. They are still easier on a motor than a blower. Hands down, turbos are the way to fly. It's been proven again and again that a turbo is going to out perform any nitrous or blower car.

 

Hey Guys , just figured i would add my 2cents here in defense of the nitrous guy.
Turbos are awsome... nothing else to say.
But the what that guy was looking to do was also very
budget minded so for a small pocket book nitrous could be a great investment ,last for yrs to come ,and works best on lesser
efficient motors.
But in another sense he never asked about nitrous either.

 

i own a nos and a turbo v8 and the nos car has put me in the hole $950 all together not including the refills. the turbo car i got the turbo from a daytona at a junk yard for $29.59and got it rebuilt for $175. custom piping was $155 all together less than half what i payed for the nos and its street legal in pa and also i can drive 250 miles with boost all the time and not have to stop to refill the bottle turbo all the way.