CA18DET with KA24DE Throttle Body

[MeanGreenS13]

who has done it and what have you modified to make it work... mine isnt working out how it should

phil

[sideways danny]

enlarge the opening in the plenum, and bolt it on. Use the cable spindle from the CA. what else do you need to know?

[ilovecoupes]

I don't know, I tried using a DE throttle body, and it didn't come close to working. the throttle cable bracket was too far back. And It used a diffrent TPS.

I just ended up using a friends KA-E. That ended up being perfect.I flipped it upside down so the coolant ports were on top.I even used the same TPS and enlarged the TB plenium hole, about a cm or two.

[Red93coupe]

I just swapped out the TPS Sensors...... and I had my cousin weld me up a bracket so I can use the KA pulley

[XTCshri2222]

I just bolted it on, traced the new larger opening, took off the tb stuffed and taped the intake mani up and dremled it and then sanded it. I then unbolted the KA throttle pully. I then swaped the CA pully and spring, the KA tb shaft was quite longer, so i used washers to act as spacers and then bolted it on tight, and all done. Only problem i had was i couldn't make the return spring work, but I've tested and drove it with the single spring and it works fine, throttle responce is still crisp.

[r34 gtr]

KA-E worked for meeeee!

[DrIft Ready]

ya i use both de and e and both work....But a ka24e looks much cleaner

[bentvalves]

with an adapter plate, or more aggresive porting, what is the largest diamater TB that will bolt up to our intake mani?

Greg

[float_6969]

I think a Q45 will physically bolt up, but trying to get idle right, and the low rpm/part throttle control may be hard on an engine that small.

[bentvalves]

Do you know what year/make infinity I could find said TB on?

[sideways danny]

I think a Q45 will physically bolt up, but trying to get idle right, and the low rpm/part throttle control may be hard on an engine that small.

no way!!!! I've tried it, the Q45 TB has a larger internal diameter than the outside of the CA plenum

[bentvalves]

aright so basically there is nothing larger for our application than the ka24 TB....unless someone else wants to chime in?

[DALAZ_68]

can any one help me on this i wanna do this to my CA

i have both DE and E s13 TB's

i just dont know how or were to dremel...

would swaping out the MAF from the same TB help any?

[ilovecoupes]

would swaping out the MAF from the same TB help any?

use the KA-e, so much easier. Just flip it upside down so the coolant ports are on top.

the TB plate is a few mm biggerso port out the hole on the intake manifold, to match the larger plate

and don't switch MAFs

[DALAZ_68]

ok but can any one help me with this...or possibly have a manifold not in use

[ilovecoupes]

dood its pretty basic.

I don't understand what you need help with