Throttle Body

mario_200sx · Post by **mario_200sx** » Fri Apr 25, 2008 10:42 am

Ive been looking around for the VQ45 nissan infinity throttle Body.

Do any of you know a place that might sell them?

I do have one guy that sells those motors but Im trying to convince to sell the throttle body.

Will be doing a experiment on putting it on my car...

Sokar · Post by **Sokar** » Fri Apr 25, 2008 10:54 am

Eish, you really read alot on the internet dont you........

Not alot of nissans locally had a VQ45, I think maybe 1 patrol did, importers wont sell you one off a working motor, sometimes you're lucky and they have a wrecked motor.

NOW.... for my 2c.....

The 80 - 90mm of a throttle body that size will be too much for a stockish setup, yes it will flow more at high rpm and you probably will gain a few KW, but you will loose alot of low down torque as the air will be stalling at low RPM and your throttle response will be terrible too.

THE ALTERNATIVE
As I'm such a helpful guy here is a nice alternative, the SR20DE throttle body will also bolt right on, you just need to extend a shaft for the TPS, a mate did this with a pipe and some pratley steel, this gives a nice compromise between the 2, also you can see if you can find a KA24 throttle body off a 2.4 hardbody, that fits too but I think its smaller than the SR one.

mario_200sx · Post by **mario_200sx** » Fri Apr 25, 2008 11:00 am

Thanx Sokar,

Also thought of going that route. Sitting with the problem, that the car is quite standard now. And I dont want too much at the moment.

But I want to start with the head setup at home, seing that I have a complete head, turbo, intake and everything at home. So while Im doing a daily driver I wanna get the head sorted.

Was thinking of putting the KA24de TB on my car for now. Very good advice..... Thanx

Building a motor on the side that I will pop in when its a track car.... Any advice would be great. Looking for loads of torque....

Sokar · Post by **Sokar** » Fri Apr 25, 2008 11:13 am

Torque comes from the bang, kw come from the "breathing"

For more torque look at some regrind intake cams with more lift, the more air in the bigger the bang, also a electronic boost controller is pricey but it makes a huge diff with torque lemme find a dyno graph for you.

mario_200sx · Post by **mario_200sx** » Fri Apr 25, 2008 11:16 am

I want to do the cams soon, but im unsure on what cams size I should go.

What do you think?

Malcolm and my dad told me 276cams will work well, but it sounds a bit wild to me! And wont that shift your powerband up the rev range?

Sokar · Post by **Sokar** » Fri Apr 25, 2008 11:17 am

A dyno of Phinx's car, check that flat torque curve with a boost controller

veecee · Post by **veecee** » Fri Apr 25, 2008 11:18 am

264 with more lift is a really good mod for keep it streetable but still making a difference.

Sokar · Post by **Sokar** » Fri Apr 25, 2008 11:21 am

mario_200sx wrote:I want to do the cams soon, but im unsure on what cams size I should go.

What do you think?

Malcolm and my dad told me 276cams will work well, but it sounds a bit wild to me! And wont that shift your powerband up the rev range?

Yip, look rather at your lift than the duration, you can go with a better duration, but not too wild.

mario_200sx · Post by **mario_200sx** » Fri Apr 25, 2008 11:21 am

Soz for sounding stupid here, but how does the e-boost controller help with torque?

mario_200sx · Post by **mario_200sx** » Fri Apr 25, 2008 11:22 am

ok, what type of lift should I look at?

veecee · Post by **veecee** » Fri Apr 25, 2008 11:23 am

dont forget that if you go too wild on the cams, then you will probably have to upgrade your valve springs!

i would keep it around 264, but go for as much lift as is possible without breaking anything or creating valve/piston "interface".

mario_200sx · Post by **mario_200sx** » Fri Apr 25, 2008 11:24 am

Veecee: Do you know what type of lift you get out of a 264cam or is do you specify that when you get the cams done?

Gary57 · Post by **Gary57** » Fri Apr 25, 2008 11:30 am

Torque comes from the bang, kw come from the "breathing"

Best quote sa far, well said Sokar.

i am in the same boat as you Mario, I am also looking for a SR20 TB.

veecee · Post by **veecee** » Fri Apr 25, 2008 11:32 am

if you going to get your stock cams reground or you are going to get billets with custom profiling, then you will tell them exactly what you want.

if you are buying aftermarket cams, then you take what you get... although there are lots of choices out there.

it would be best to take the head, with the valves, to the engineers who are going to do the work. that way they can measure the biggest lift you can do safely!

search the net for the stock specs on lift for the ca18det, then you should be able to gauge from there! its usually only a few mm's more than stock!

mario_200sx · Post by **mario_200sx** » Fri Apr 25, 2008 11:34 am

Thank VC, will be using stock ones I have spare.

Will take the complete head in.