Throttle upgrade for a 14psi ca18det

[the forsaken]

ok i tuned my car so far that i'm running 14psi with no problems. now i would like to upgrage for a larger throttle body. now if seen people use some infinity throttle bodies as upgrades for hondas. now i would like to know witch throttle body will improve my performance at best and how much will i have to spend for it? and if i'll need to do modifications to make it fit?

Kevin.

[pulsar gtr]

If you still have your KA engine, you can use the KA throttle body, need to dremil the intake on the ca a bit to allow for more air to flow but the KA one is plug and play.

Good luck,

RafiPULSAR GTR

[c-rad]

I believe its only the KA24E throttle body that fits.

[nocwage]

As a seperate note if you're running 14psi on the STOCK turbo it won't last long..Mine didn't (but it was fun while it did )

[float_6969]

KA E is the closest fit. If you use the KA DE the coolant lines are on the top of the TB. You can use the Q TB, but I personally think it's over kill unless you're making 300+hp.

[the forsaken]

no, i change the turbo, and upgraded the hole fuel system. but anyway, i still have my ka24e, i'm selling it. but i can take it of. but would it spool faster with the ka throttle body, and how much diference would that be???

[c-rad]

no, i change the turbo, and upgraded the hole fuel system. but anyway, i still have my ka24e, i'm selling it. but i can take it of. but would it spool faster with the ka throttle body, and how much diference would that be???

Spool has nothing to do with the throttle body. It has to do with the displacement and compression ratio of the motor.

[jt15833]

if im not using throttle body coolant lines (plugged off) can i use ka24de? is this upgrade only good if your pushing 230-250 hp or will the bolt on guys feel it?

[Akihisa]

I cut the coolant passage off with a dremel and relocated it to under the tb.

[float_6969]

You can use the KA DE, but you'll have to do as akihisa did and cut if off and hook up the coolant lines under the TB. If you use the KA E TB, the nipples don't point in the right direction, but it's underneath the mani like it should be. I'm using a KA E, but I bypassed the TB coolant lines.

What's funny is that they aren't really for cooling, but for heating the TB....

[Driftek Motor Sports]

The single cam and twin cam ka throttle bodies throttle plate pulleys are on the driver side of the TB the CA Throttle plate pulley are on the passenger side, creating a throttle cable delima....

The KA Throttle body Notice the tb plate pulley

The CA Throttle body Notice the TB plate is on the other side along with the mounting point for the cable...

[knightrider]

not really a problem for us LHD guys, we have longer cables.

[Driftek Motor Sports]

not really a problem for us LHD guys, we have longer cables.

How exactly do you plan to attatch the cable to the manifold and the TB plate pulley if they are on opposite sides?

Regardless of what hand drive you are....

[originalsin]

the DE tb's work better imo, i just dont run coolant through it, not really any need to....

[nismojunkie]

the throttle body wont get hot and affect the temp of the air going through? if thats true then it wouldnt matter if you just got rid of the hoses to make it look a little bit cleaner and easier to acces that area with out any hoses?

[float_6969]

Don't quote me on this, but I BELIEVE that the purpose of the coolant lines going throught the throttle body is kind of an old school train of thought that at lower air temps the throttle plate cant frost up. It happened frequently with carburated vehicles. I think they later realized that the frosting was due not only to the cold air, but the fuel being atomized in the air, which lowered it even more. I don't think it's a real concern in a modern fuel injected engine. Especially one that is turbocharged.

[240 Trainee]

Didn't rico05 do this with a sohc throttle body? I saved my throttle body off my junk singl cam just for this purpose, I don't remember how he got it to work though

[float_6969]

I've got a single on mine. It works fine. The nipples on the bottom didn't point in the right direction and I so I cut them off. I THINK I might have had to mess with the connection for the cable, but I'm not sure. I may have just swapped my stuff from the CA TB over.

[rico05]

I just flipped the KA24E TB, cut the coolant nipples off, and adjusted my throttle cable. Everything worked just fine. Although I did eat like 6 Dremel bits port matching the intake mani lol.

[float_6969]

Carbide bits are your friend. I used one carbide bit on my wastegate porting for about 2hrs straight and it still looked brand new when I was done.