carburating a 1990 240sx, anyone have any advice as to compatibility?

[ojeeztutone]

we recently came across a 1990 240 sx w/ ka24e mill in it. I was wondering if any of you have heard of a way to carburate it or if i have to fab something for it, the reason it needs to be carburated is that it is going to be a 4 cyl class oval dirt track racer, carb is requirement, mainly i was wondering if i could get a carb/intake manifold from perhaps an older nissan 2.4 truck motor and bolt on to the head? or get a head and intake set w/ carb from nisan truck. Just wondering how i would go about looking for parts, any technical advice would be appreciated, i dont really want to spend 1000 plus on a custom machined aluminum intake on a 300 initial purchase car.....

[spyro187]

I don't know a lot about them but you should probably do a search on ITB's.

[ojeeztutone]

i apologize for not being a pro nissan lingo man but what is ITB's?

[Chingon]

most powerful natural aspirated ka's are carbed. I know nismo made a kit, but other than that, nothing. Most likely a custom setup would be needed, and you seem to be in the right track.

http://www.xceedspeed.com/foru...75001

[spyro187]

ITB's have nothing to do with nissan lingo. As I said before it would be best to use the search button since I don't really know much about them. From what I understand it is the throttle body assembly from motorcycles. So if you need a carburator system you could use an old 4 cyl motorcycle setup. Not sure if the carburated version is stil considered and ITB but hey, I tried.

ITB = injected throttle body??? No idea what it stands for.

[naed240sx]

ITB's have nothing to do with nissan lingo. As I said before it would be best to use the search button since I don't really know much about them. From what I understand it is the throttle body assembly from motorcycles. So if you need a carburator system you could use an old 4 cyl motorcycle setup. Not sure if the carburated version is stil considered and ITB but hey, I tried.

ITB = injected throttle body??? No idea what it stands for.

ITB= individual throttle bodies. (1 per cylinder)

[spyro187]

Thanks, I was going to start searching for the acronym.

[nismofly]

ITB's still use fuel injection, all it does is give you an intake for each cylinder instead of having one intake, TB, manifold, etc

nismo used to make a carb adapter but now i cant find it

the GT3 cars use carbs though, you might look into that

[Red coupe]

how far back does the KA go? possibly some form in a carb'ed truck?

[carburated240sx]

i own 1991 240sx with a holley 650 blowthrough carb.i had to custom fabricate everything to make it work. here are some pics

[karmakaze]

i own 1991 240sx with a holley 650 blowthrough carb.i had to custom fabricate everything to make it work. here are some pics

ha, thats pretty sweet. good work!

[thekage]

Check out this guy...http://www.dgrfabrication.com/orhttp:// ... s13_2.html

[2s4k0y09]

Very cool, but dam that is expensive to do, well by Courtsey Nissan at least.... I imagine it would sound sick as hell though..

[DDelambre]

I can understand trying to conform to rules and regulations for racing, but what I can't understand is WHY rules won't change with the times. This goes for NASCAR too. Technology has made huge leaps and bounds within the auto industry. Fuel injection is WAY more efficient and in my opinion, easier to tune, with the right software of course. Why has NASCAR, among others, stayed with ancient technology, ie, cam in block, carburetors, etc? It also pains me a little that Toyota is running in Nascar now, but hopefully to prove a point that it doesn't have to be dominated by AMerican car companies. I think that if you want to race oval/dirt track, and the rules state you have to have a carb, then start with a car that already has a carb on it. Even with a 1990, you'd probably be one of the newer cars on the track. I say, don't take a step backwards in time and technology. This may all be heresay, but its my opinion...

[carburated240sx]

we just wanted to do somthing different than what we see at the dragstrip every weekend, and so far...we havent.

[1989240sx]

what about the carb on the old z car thye had side mount carb on them