Throttle body or throttle body spacers...???

[suryad]

http://throttlebodyspacer.com/faq.html

What is a throttle body and what is a spacer? What size id the tC having in terms of a throttle body. I read it up in the wiki and it allows more air in from the intake if I am not mistaken...I have seen some people with 60 mm throttle bodies...but is that the size for the tC? Is this a beneficial mod?

[scionara_tC]

http://throttlebodyspacer.com/faq.html

What is a throttle body and what is a spacer? What size id the tC having in terms of a throttle body. I read it up in the wiki and it allows more air in from the intake if I am not mistaken...I have seen some people with 60 mm throttle bodies...but is that the size for the tC? Is this a beneficial mod?

the throttle body conects your intake to the engine. when you acelerate, a valve alows the air into the engine for the mix. in theory, the larger the air mass, the better response. however, you need to look at the other parts of your mix (ie, gas). too much air and you're running rich, which can be dangerous. too little air, you lose combustion, thus losing power.

i read somewhere you are planing on going FI at some point. If that is the case, i would hold off on any I/H mods since you will need to upgrade these to FI specs. You can get an exhaust, jus make sure it will work with your FI setup.

[suryad]

Thanks senor for the post. I have been thinking of the turbo/supercharger route...but my reasoning is I dont want to reduce the reliability of the engine as it is my daily driver. If Toyota does come out with a s/c kit for the tC I would like to get that cause it is authorized by Toyota...you know? So I guess I should research mods that would help both naturally aspirated and supercharger...so this throttle body does not fall into that?

Also if there is more air coming in that means the computer will shoot in more fuel to burn the air no? Isnt that where tuning the car comes into play? Sorry I am a bit of a n00b at all this and thats why I am asking all these questions.....

[THansenite]

Scion already does offer a supercharger for the tC. And all throttle body spacers do is allow more time for the fuel to atomize for (supposedly) better burning. The only benefit a spacer would have is if you run nitrous and drill and tap a hole in it for the nitrous lines.

[scionara_tC]

Also if there is more air coming in that means the computer will shoot in more fuel to burn the air no? Isnt that where tuning the car comes into play? Sorry I am a bit of a n00b at all this and thats why I am asking all these questions.....

that is correct but only to a point. your injectors can only handle so much volume. to increase it, you need a larger injector. increasing your total mix will, again in theory, give you more power. when you start changing your engine set-up, you have to be careful not to go beyond the engine capacity. too much compresion without the right internals can wreck havoc too. that is where tuning come in.

on the reliability, a well tuned FI set-up, whether SC or Turbo should not change your reliaility. Turbo will void your warranty where TRD will pick up the voided part from Toyota (basically you're covered under TRD not Toyota) and for a new car, that is a real concern.

have you researched the pro's and con's of turbo vs SC? There are other reasins to pick one over the other such as whether you want instant (SC) or delayed (turbo) response.

[suryad]

Nice post thanks.
Yeah I have been thinking about the whole turbos spooling up only above a certain rpm. I have been looking......no...drooling over the stage 1 zpi turbo kit...and it is absolutely badass. I will need a clutch upgrade and definitely an engine damper if not engine mounts for 300 hp at the wheel. Apparently the power kicks in at 2500-3000 rpm when the turbos are good and ready. For most city driving as I do...I keep the car under 3k...at about 2.5k...so I guess driving wil lrequire a bit of adjustment because I dont want to be blasting down the street everytime i hit the turbo sweet spot lol.....

But so far I think I have decided to stick with NA which is intake, headers, and exhaust until I get the turbo kit...I think I will go turbo in the end. Possibly this year itself...

[suryad]

I know my intake and my headers will be useless if I go turbo...does that mean I will have to revert back to stock for those? Or will the turbo manifold be replacing them both?

[THansenite]

I know my intake and my headers will be useless if I go turbo...does that mean I will have to revert back to stock for those? Or will the turbo manifold be replacing them both?

The turbo manifold will replace the headers and the intake piping (with or without the intercooler) will replace your intake. Those pieces come with the turbo kit.

[suryad]

Thank you sir. It makes a lot more sense now.

[scionara_tC]

i just noticed something on the thread you posted, they are selling the spacers.

when you are researching, i would recommend staying away from seller sites. these will tend to show you all the information that supports their claims and none that will counter them. keep in mind that for every piece of research supporting some claime, there are probably two stating the opposite and that applied even to car modding.

look at the neutral sites (like ours :up: ) for better non-biased information. :wink:

[suryad]

Thanks for the tip scionara! Yeah that is why I posted here in this forum right away.

[Krdshrk]

Yeah - don't worry about a different TB or spacers. They're not needed at all. The Throttle Body is already a decent size. As for turbo vs sc, i'd go turbo. It's so much more fun.

[scionara_tC]

Yeah - don't worry about a different TB or spacers. They're not needed at all. The Throttle Body is already a decent size. As for turbo vs sc, i'd go turbo. It's so much more fun.

yeah, but you're biased :rofl: :rofl: :rofl:

[suryad]

haha he is biased...but I cant deny 300 whp to be a lot of fun!!

[toyota_scion_tc]

Bigger throttle bodies are good as long as you stay within reason because you are increasing the intake volume, Spacers are good for the same reason. The tC's come with 55MM tb if you are running all motor with bolt ons you would be good running a 60-62mm, if you have bolt-ons plus internals (higher compression pistons and built head with port and polish, also depending on cam duration) then a 65mm would do great. When and if you boost 65mm-70mm depending on psi you are boosting.

[THansenite]

However, if you increase the size of the throttle body, you decrease the velocity of incoming air which means less fuel atomization. Keep the stock TB as it is plenty big for pretty much any turbo application and atomizes the fuel better.