throtle bodies

[badinblack]

I am building a 2.4L, and when it came to the intake and throtle body I had to stop and scratch my head. The intake manifold is going to be made, but I was wondering what should I have it flanged to? I have heard and seen the size of the q45 and it is about 90mm. I was wondering if any one has used this and what it took to make it work, or any other ideas for a throtle body?

[JET]

Q45 is all the rage. What is the rest of your setup? A stock 1g would probably be fine.

[niterydr]

Q45 is all the rage. What is the rest of your setup? A stock 1g would probably be fine.

:postalot:

Actually, give us your mods list so we can recommend the proper throttle body.

[FattyBoomBatty]

You can get a huge TB, just tune for it.

[badinblack]

the rest of my setup consists of; egal h beams, wiseco 9.1:1, 860 fic injectors, 255 walbro, 1mm oversized valves under cut andswirl polised, crower springs and retainers, in a cnc ported 2g head, sbr tubular exhaust mani, the link, true gt3582r, maftranslater with 3in gm maf, oh and comps 272s wich accutually are a 262@50, and all of this is in a 7 bolt 2.4L

[JET]

I would stick with the stock TB, no need to mess with a bigger one at that point. Stock TB has run 9's.

[badinblack]

do you know what the q45 will flow over stock 2 1/8. for 70 bucks I thought it would be worth not bottle necking it there? does it cause any problems going with a larger than needed tb? and what is the tps like on the q45? do i just need to wire in that pig tail, or are the resistance levels different and have to retro fit the stock tps on to it? any little hints will help.

[JET]

The larger TB will make it harder to tune. Bottle necks in piping are odd if you don't know fluid dynamics. They add up over a length, so a short bottle neck like the TB really doesn't mean a ton, especially at lower flow levels. That being said it will still be a restriction. Are you going with 3" IC pipes and a free flowing FMIC? If you are going 2.5" pipes, don't bother with the TB, use a 1g one.

[badinblack]

yes, sorry it will be 3" charge piping. with an intercooler said to have a very high flow rate, cant remembere numbers but that is why I chose the one i did. My hole thinking was to reduce the amount of restrictions as much as possible. let that air pump work! right?

[At-Least-It's-An-Evo]

Get the 3" in there for when you wanna make 700+whp and ditch that 35r. Do it once, do it right, right?