civicracer1993

i have an exhaust and intake and i have an SI intake mani and TB sittin in my room , i am gonna use it when i put the SI head on my car but for now will it help at all on my 8 valve CX? what if i just put the TB on the current intake mani? will it hurt it?

mike

Evs-One

throttle body's the same size, but the intake mani will flow a little better. Kind if a hassle getting those nuts underneath the runners though. I would just wait for the head swap, but it will help some.

civicracer1993

i tried to put the throttle body on and the sensors are diff?? there is no map sensor that i can find on the SI one.. the CX one has 2 plugs and the SI only 1 Why??the car wouldnt start when i put it on with only 1 plug..

charjacq

After you're done playing around with that, email me if you want a chip. Real power gain there!


[Modified by charjacq, 5:09 PM 1/4/2003]

A D NOH

fixing up a CX motor is pointless.

save money and buy atleast a 16 valve sohc 1.5 swap

if you want your CX motor to go faster and you dont want a 16 valve get a SI tranny. CX gearing sucks for speed, but great for cruising

YumVTEC

you sure about them being the same size? the cx tb is teeny tiny...

Slopoke

The throttle bodies are not the same size. You cant even put a si TB on a cx manifold.

It is not worth your time to put the intake manifold and TB on before the head swap.
I've ridden in a cx, before and after a IM swap and it actually felt a bit slower with the EX manifold. It lost the little mid range it had before and didnt seem to gain anything on the top end.

Unless you plan to swap a 16valve head on it, DO NOT bother with the cx motor.
I rode in a '93 cx, fully gutted, with ex tranny, ex intake manifold, short ram intake, dx exhaust manifold and a straight pipe.
That car was a dog and would've lost to a stock dx.

EK MONEY

iTrader: (5)

the reason the Si TB is different is becuase it most likely came off a model where the map is mounted on the firewall. All you do is take the stock map off the CX TB and use a small amount of vacuum line to the bottom of the sensor.

Slopoke

Actually, the bolt pattern on the two TB's are different.
Therefore, they are not interchangable.

redcxhatch

buy a 16 valve head, Z6 intake mani, B series TB and slap that on.

redcxhatch

c'mon, stock Z6 flows better than ported y8.

civicmatt

When you pull your head off, make sure you have 16 total valve indents on your pistons. Cx heads only have 8 valves and i would hate to see all that work not pay off when a valve smacks a piston. then again, maybe there is enough room for the valves with out the indents. no one seems to know for sure.

Slopoke

I cant speak for all CX's, but my '93 cx pistons had indentions for 16 valves.