s/c or turbo

[evilmoose]

in your personal opinoions which is the smarter way to go keep in mind that the trd s/c is said to bring you up to only 200whp and the turbo set ups i have looked up where said to take it to 300whp but i asume that is at a very high psi so im guessing around 250 but the turbo dose void the warrenty. also the turbo is cheeper... thats about how much research i have done on the subject and i would like to here other tc onwners opinions?

[navylife59]

Turbo ain't cheaper if your looking at 300 ponies and doing it right. They also don't last as long as a S/C setup. My only prob has been a recent cracked mounting bracket that is a known defect in the 1st gen TRDs. Turbos breakdown over time, bearings and cracked manifolds. The also produce alot of heat under the hood which cause other problems. You can spend the extra money and wrap/shield everything.

Lot of pros and cons. It simply comes down to whether you want alot of power output or longevity/drivability.

I have the TRD and yes, I am biased.

[ForBiddeN]

if u want 300hp your gonna void your warrenty no matter what

[evilmoose]

i wasnt aiming for 300 i was just puting that one out there lol but yes it is obvious if i was running that much power it would be voided haha

[ForBiddeN]

lol yeah. u can shoot for like 230 and not void your warrenty with the s/c

[tCSanDiego]

Can you tell the difference...i heard that with the S/C, you dont feel that much of a difference. If you wanted to get a lot of HP's you would want higher boost...which you would need to put forged pistons and rods in for stronger internals. Correct me if i am wrong, but i dont know if the motor in the tC is feasable motor for racing. Let me know what you think...

[ForBiddeN]

turst me u should be abel to feel the diffrence of 40-50 extra hp. plus its all about how u drive your car. and as far as the motor not handeling it ive seen guys hit up to 15psi on the stock motor keep in mind me have a forged crank some 1 told me we had factory forged rods they did this to handel the supercharger. our compression is allredy at 10 to 1. the motor that was have in a beats.

[navylife59]

Compression is 9.6:1 OEM. The short block is loaded with a forged crank, balancing shafts, and I am not sure but the rods maybe too. This is an all-aluminum block with a lower girdle and cast-iron sleeves. I know for a fact that Karl's S/C tC was running 14.5PSI with the same NST pulley I am installing. He also was testing RippMods cams for them He switched back to the 12PSI pulley and they dyno'd at 325WHP I believe. That was with a stock short-block.

Scion tC Specs.JPG

[ForBiddeN]

my bad on the compression i guess i shouldent lisen to people that have 88 conquest's lol

[navylife59]

Those were such a cool and misunderstood car way back when. Did that have a Mitsu motor in it?

[TeknoMaeg]

Wow the amount of mis-information is astounding.

Ok, first of it depends on the power potential you want and where you want the power.

Turbo's are more efficient and generate a better HP output since they run off the un-used gases and exhaust pulses expelled from the engine. A S/C will drain the engine of power due to using the crank's rotational mass to turn the turbine.

Yes turbos will HOLD more heat but they do not generate any more heat than an exhaust header. Get the turbine housing coated in ceramic or jet-coated and it will hold the heat to keep it from radiating. This will effect longevity but with a ceramic ball-bearing turbo the heat transfer will be minimized. Also adding an oil cooler for the turbo and one for the engine will help prolong the life of the turbo.

Power in a S/C is instant... it builds boost with the RPMs and thus builds power constantly. Turbo's must reach a specific RPM to build boost and without a mechanical link to the engine it has to rely on the speed and momentum of the expanding gasses within the turbo-manifold.

As far as the more expensive... Yes the TRD is complete right out of the box for $4995 or less, some times. But with a Greddy or home built turbo kit, not only will you spend less (if you know how to shop) but you will generate better gas mileage and greater output (if you know how to tune properly).

Simple fact, it's a personal choice but the numbers and general logic ALWAYS point to a turbo every time. It's an emotional choice that directs to supercharging.

[ForBiddeN]

Wow the amount of mis-information is astounding.

Ok, first of it depends on the power potential you want and where you want the power.

Turbo's are more efficient and generate a better HP output since they run off the un-used gases and exhaust pulses expelled from the engine. A S/C will drain the engine of power due to using the crank's rotational mass to turn the turbine.

Yes turbos will HOLD more heat but they do not generate any more heat than an exhaust header. Get the turbine housing coated in ceramic or jet-coated and it will hold the heat to keep it from radiating. This will effect longevity but with a ceramic ball-bearing turbo the heat transfer will be minimized. Also adding an oil cooler for the turbo and one for the engine will help prolong the life of the turbo.

Power in a S/C is instant... it builds boost with the RPMs and thus builds power constantly. Turbo's must reach a specific RPM to build boost and without a mechanical link to the engine it has to rely on the speed and momentum of the expanding gasses within the turbo-manifold.

As far as the more expensive... Yes the TRD is complete right out of the box for $4995 or less, some times. But with a Greddy or home built turbo kit, not only will you spend less (if you know how to shop) but you will generate better gas mileage and greater output (if you know how to tune properly).

Simple fact, it's a personal choice but the numbers and general logic ALWAYS point to a turbo every time. It's an emotional choice that directs to supercharging.

i rely dont think you know what your talking about sounds like a buch of bull**** to me

[ForBiddeN]

Those were such a cool and misunderstood car way back when. Did that have a Mitsu motor in it?

it had a 2.6 RWD turbo they eaven had LSD . it was a mitsu motor chrysler had it imported from mitsu they had 2 versions the chrysler conquest and a mitsu starion. they had the sexy widebody and a ugly ass flat body but they were good for a sleeper

[navylife59]

Yep, the good ol' Starion.

TRD's don't cost 5K. I had mine 2 weeks after they were finally released. It cost $2900 new and the Dealer installed (for warranty) for $300. Nowadays you can get it for $2300 plus $300-600 install or you can do it yourself. Add about $100-120 for a 9 PSI pulley and your easily making 210-220WHP.

[ForBiddeN]

navy im thinking about going your route with the supercharger im gonna try and by that guys here on the fourm any sugestions about it?

[navylife59]

Just make sure that you get all the parts that go with it like the 440CC injectors, TRD reflash module, intake hoses, oil pan, oil lines, mounting brackets, upper radiator hose, serpentine belt, etc. The stock airbox was modded to allow for the air horn and carbon filter. You will need these also, unless, you have a SRI/CAI that you can cut to fit. As you see, there is a lot more to it than just unbolting the S/C. If you can get everything, then it would be easier than installing a turbo.

I can try an post the entire parts list for you. What the seller cannot sell you, I can tell you if it is something that you can get an alternate (better) part for.

[ForBiddeN]

ill see if he can post everything i hope it comes with everything it would be a good buy if it does ill get the 9.5 pully also whats the trd reflash module?

[navylife59]

It is a little, silver module with a RS-232 connector that a Toyota Tech connects up to the Toyo ECM flash programmer to upload the TRD S/C specific tuning maps into you ECM.

[TeknoMaeg]

i rely dont think you know what your talking about sounds like a buch of bull**** to me

you "rely" don't "think" I know what I am talking about. There's your primary problem. I am sure of my knowledge and experience. You simply THINK I don't know what I am talking about.

Fine... I could care less if you believe me but I am yet to see any one else post worth while information on here about a turbo system and considering the fact that I have been working with cars since was nine and built my first SBC (that's a small block chevy for those of you that don't know) at 11.... sure... I know nothing.

But with that aside, if you can provide me information that contradicts ANYTHING I have said... please do so. I love to learn even if it means I am wrong with the knowledge I have. Now considering I have built turbo systems from the ground up and they were not only reliable, but provided substantial power gains. I would head my advice. I am by no means trying to insult peoples knowledge. I am just sick and tired of hearing/reading about how fanboi's have read this, or heard that, or seen this and when ever push comes to shove it was some one else. For the right price I can do anything you want to your car... I have the knowledge and skills base. I also work at a Scion dealership and have been thoroughly researching my product.

So by alls mean... prove me wrong.

But until you can... sit back... stay quite and ask questions when you have them. No matter how dumb they are I will help out.

[ForBiddeN]

"A S/C will drain the engine of power due to using the crank's rotational mass to turn the turbine." you contradict your self... you say it drains the power of your car but there for you also say its instant power if its instant power how would it drain your car? yes its pully driven but how would that effect the power of your car? so how would a turbo be any better there is turbo lag... aka spool time. so what would be better? having "instant" power but because its pully driven you lose power....? or have a turbo that u have to wait for the spool time? you also say u can get a turbo kit cheep. yeah you can but if you wanna blow your motor up go a head. you can find a supercharger kit for the same price of a nice turbo kit. with the supercharger your more safe. the power that comes out of the turbo sometimes unpredictible because of the spool time with the supercharger your evening the power as your go threw your rpms becase it is instant as for the turbo because of the spool time when it hits that rpm its like an instant hp gain its like hitting the nos. any questions?
just rember you started this whole ******* attitude from me about of your non ability to read on the outer post in my book your considerd an ass whole and still 1 unless u show me outerwise. then my attitude will change toward you.