just something i found. can it work on our supras?

[hxckid213]

i found this on a mazda forum.

"So easy! It really helps a lot as the TB is a decent sized chunk of metal. Not having it heat up to a billion degrees not only helps underhood temperatures (errr, right?) but it'll make sure the TB isn't heating the air up before entering the engine and potentially robbing you of some power. What I like about it even more than that, however, is the fact that it won't bleed heat into/onto the intake pipe. Big difference on the temperature of the intake piping after being run hard."

http://forum.mazda6club.com/2-3l-i-4...l#entry1275553

[82 Lover]

my friends also stats this because it is there for cold climates. so it doesnt freeze up on someone during the winter. Im also thinking about doing this to my car.. now its debating on this thread.

[zuprax85]

this mod has been discussed before. did that on my 2jzge swap.

[Road Ripper]

Did it to my 84 back in 2005, and drove my car all winter with no problems. Throttle body never froze up, even in sub-zero temps. I did it because the little coolant hoses were old and started leaking, so I blocked off the feeds with short hoses and bolts clamped in the ends of them. Didn't really notice any power increase from doing it, just nice to get rid of the extra hoses and potential problems.

[83CelWA]

Bypassed the tb and iscv coolant lines quite some time ago also due to hoses going out, never had an issue from it.

[82 Lover]

that solves it for me. thanks guys!! now i can make the trubo set up look a little more clean

[lechner]

This mod hurts performance and mpg. Believe it or not, the Toyota engineers knew what they were doing, and the "coolant" isn't just there to prevent icing in cold weather. You want cold intake air only because cold=dense=greater volume and what really matters is the volume of air you pack into the combustion chamber. But there is another factor these modders are ignoring: volume is a combination of density AND velocity. Air slows down near a cool surface, which can cause turbulence with the faster moving air in the middle of the pipe and the result is less air per second to flow into your manifold. If the surface is heated, the air flows over it much faster and more air per second flows into your manifold. The entire intake pipe isn't heated because a balance has to be struck between density and velocity, but the TB is so small that the air flowing through it doesn't have time to be heated by the surface and become less dense. So, to summarize, the ideal situation is cool dense air flowing over a heated surface.

[cmdeshon]

^ that is a great response.

i deleted mine because i thought they were a pain in the ass. no trouble so fare.

[82 Lover]

oooo man WTF DO I DO! LOL

[lechner]

well, if your "forced induction", that changes things. In a "normally aspirated" car, air that is close to ambient temp is being pulled through the TB by vaccuum. But with FI cool intake air has been compressed and superheated by the turbo, cooled some by the intercooler, and is now being forced through the TB. Unless your intercooler is VERY efficient, the air temp going through the TB (when boosting) is higher than coolant temp. The velocity of forced air also isn't going to be as effected by surface temp because the other forces acting on it are much higher. A heated throttle body is still better, especially since you aren't boosting all the time, but it doesn't make as much difference as in an NA car. Still, the only benefit to this mod is simplicity