carburated 240 who's done it?

[240cp]

was wondering what would have to done for ignition? would the dizzy act as normal or does the computer have that much control over all the ignition and timing?

[240cp]

oh yeah i have searched nico with no result!

[gumby74]

I would LOVE to see a carbed KA myself. Either a smaller Holley or a couple of Mikuni/Webers with the appropriate jetting just sounds kinda fun.Sorry, I have no useful info to contribute, just my own collection of pipe dreams.

[240cp]

what i was thinking is to use the independent carbs off of something like a older suzuki or kawasaki 900 cc or better. kinda like the ITB setup but with carbs. they link all 4 carbs together just like the ITB's but with caburaters!

my only worry was with the timing and ignition. would the dizzy work as normal?

[240cp]

no one else?

[koukicody]

deviousKA has/had webers on his sohc ka, seach for posts by himand someone on the "other" forum had some on a dohc ka.

thats all i know...

[240cp]

appreiciate it!!

[240cp]

guess thats it, huh no one can help me on this?

[acrazyjohnny]

depends if ur have a sohc or dohc if sohc they nissan motorsport makes a intake mani to bolt on webers/side drafts

[mrzabala]

Go to the Philippines. Almost every engine they get there hands on will turn into a carburated engine...... YUMMY Yum Smog.

[240cp]

can you blow through these carbs? they are off a 00 600 gsxr.

[dickie]

hmmmmmmmmm. i KNOW i have seen it done before, there has to be at least one 510 using them on a ka24de swap.

[zerepdivad]

didn't some nissan mini trucks come with carb'd sohc's? Or were they just tbi?

[My RB25]

Go to the Philippines. Almost every engine they get there hands on will turn into a carburated engine...... YUMMY Yum Smog.

LoL Only reason Im laughing is cause I have Philipino (bad sp) friends and they've told me what it's like over there lol

[240cp]

some are joking but im for real! tired of tuning with FI. sh@t gets old upgrading injectors and what not, when all you got to do, if you want more fuel is jet the carb.

and if you run out of jets well, buy jetting bits and drill out the existing jets. that easy, i come from carb motors and they aint hard to tune.

[240cp]

yeah my 240 is dohc, it's a 95 model. building my own intake is not a prob. they are kinda easy really, especially if i use the independent carb's from say, 600, 750, 1000 gsxr or such.

[crash n burn]

guy here that owns a race shop made his own for his 85 corolla..used a set of gsxR 1000 carb setup..its ungodly loud now, and it really woke up the motor..he did a little tinkering with the motor and exhuast, completely different car now..too bad i dont have the time to do somthing liek this : [

[240cp]

sounds as if this motor was n/a, what if i blew through those carbs? am i wrong? hopefully i am but some say that you cant blow through carbs that have slides and butterfly valves. as everything will seperate at boost?

i hope i am wrong because i would love to use independent carbs along with my twincharged setup. still putting it together but it is coming along just trying to figure out all the details!!

[na3j nitsuj]

well i saw a posting on Z ilvia or nico(well somewhere....)

it had pics of a ka dohc carb...the guy said it wasn't worth it....

try to research more outside of nico....

[240ka24]

I have never boosted anything but I think you have to pressurise the float bowl area also. You would prob need to boost fuel 1psi per manifold psi. I have seen mikuni's(phh) boosted. just make sure that no air leads past the butterfly shafts and anywhere else. but....I would just forget the boost and just run the dcoe's or the phhs'. they really do sound wicked on the ka's...or any motor for that matter.

[240sx_671guam]

didn't some nissan mini trucks come with carb'd sohc's? Or were they just tbi?

not actually carb, but EFI carbs..its a single barrel and a direct bolt-on to a 240 sohc.all you need is the upper engine wire harness and ecu to control the fuel injection in the carb..i wanna do this but where i stay, it is very rare to find this set-up

[neverlift]

lol saw three today at the local yard..... cant say what the setup would run, or if it would be cost/performance effective. fi(direct)IMO owns 4 bangerz

I'd love to see someone do it, till I blew the sohc I had thought about it....

[yellowcar]

Lots of 510 guys have done this. I heard that nissan comp even sells a manifold now but it is something like $800

[schema]

I just bought a 91 DOHC thats carb'd, guy said the car overheated and shut off on him, picked it up cheap, the set up is awesome looking, just came back from looking it over. I'll post back up when its at my house.

[schema]

was wondering what would have to done for ignition? would the dizzy act as normal or does the computer have that much control over all the ignition and timing?

When i looked my car over today the distro is still there, and though I forgot to take a look at the ECU to see if it was swapped, I'm betting that was the same. A/F ratio is done mechanically now, so those wires were removed from the harness. Timing is still done by the distributor which is mechanically driven.

I'll look it over when I tow it over this week, show ya's the goodies!

[dickie]

neato. so the p.o. set it up or the guy he bought it off of?

[schema]

neato. so the p.o. set it up or the guy he bought it off of?

The previous owner, the guy I bought it from knows little about cars. Im in upstate NY, car was brought up here from Florida a year ago, so not one little spec of rust on the entire car =) I'm gonna try and track down the guy who did the conversion. Engine bay looks SO clean and empty. I should have taken pics while I was there, but nice weather this week so I'll have it at my place in a few days.

I was told the guy who did the conversion set it up for autocross, kinda like doing the ITB conversions. Give you more horse and torque down low but nothing extra at top end (so instead of 80hp at 2 or 3k rpm, you're closer to 120-130hp, pretty sweet!).

[abused]

could you tell what does your carb'd setup do with vaccum lines. which ones were kept.Also have you taken a look at the ECU yet...I am wondering how well everything is working without the Air and Fuel being regulated by the computer.

[240ka24]

I dont think you need any vacuum lines to hook up and you need to have a fuel regulator although i would prefer an external low pressure pump and regulator.....to a pressure of about 4-6psi

[abused]

good to hear about the vaccum lines. I already have an inline external low psi high volume pump. Also does the car run without the MAF sensor? I will be eliminating it.