ka24de info

[DatsuNoob]

I dug around and answered my own question. thanks anyway.

[tucker brimacomb]

i was planning a Ka24DE/5speed out of a 90 240sx into a 71 510.

[datzenmike]

In case it's different... the flappers were to block the runners at high manifold vacuum (low speed and throttle) to force turbulence for more efficient burning. Open at mid and high. Removing them requires sealing the 8 holes preferably welding them up. I suppose the screw or rivet heads could be ground off and remove the butterflies and leave the rod.

[DatsuNoob]

Originally Posted by datzenmike

In case it's different... the flappers were to block the runners at high manifold vacuum (low speed and throttle) to force turbulence for more efficient burning. Open at mid and high. Removing them requires sealing the 8 holes preferably welding them up. I suppose the screw or rivet heads could be ground off and remove the butterflies and leave the rod.

Also known as the Swirl Control Valve? It was my understanding it improved the atomization of fuel mixture and swirl velocity at idle and low RPM(which is basically what you're saying). The real question is, would it be beneficial to remove it for constant open flow(maybe a bigger cam too?), or would it make for shitty throttle response and poor fuel economy? I'm looking to maintain good throttle

[Docsis510]

does anyone have a part number for radiator hoses that can be used from a ka24de to a rabbit radiator???

[Duke]

Originally Posted by Docsis510

does anyone have a part number for radiator hoses that can be used from a ka24de to a rabbit radiator???

For the lower hose I just used the stock 240sx hose and cut it down to fit. As for the upper hose, I'm not really sure.

[MicroMachinery]

Good question. I also am wondering the same thing. I've heard of people removing the "butterfly valves", and welding the holes shut. But then I just read something that they're for creating turbulence in the combustion chamber, and thus better driveability. For sure, any obstruction is a hindrance to airflow, but where's the trade off? I know Nissan didn't design it to be a crappy design, but is it more for emissions, or performance... I'm leaning more towards taking them out all together. The KA I bought has the butterflies taken off, but the rod is still there. Seems kinda half-assed. I'm gonna take the rod out and find someone who knows the "black-art" of aluminum welding

[Mr.Fahrenheit]

has anyone removed the pcv system on the intake on these ka's? if so any driveability issues?

[matt w.]

my L18 over heated and im planing to get a new head its a reacuring problem long storry im considering a KA swap how indepth is this like drive shaft slave cylinder wirering what all goes into it

[DatsuNoob]

Does anyone know roughly how much fuel is comsumed (in gph or lph, doesnt matter) by a stock KA24de, or where to find such info? I'm trying to figure out the minimum volume I need in my surge tank to run the engine for a couple minutes on an empty fuel cell.

[goes2fast]

Has anyone put a DE in a 620? What do I need to know to make it fit?

[DatsuNoob]

Originally Posted by DatsuNoob

Does anyone know roughly how much fuel is comsumed (in gph or lph, doesnt matter) by a stock KA24de, or where to find such info? I'm trying to figure out the minimum volume I need in my surge tank to run the engine for a couple minutes on an empty fuel cell.

Bump?. There's also lots of good info on the the dual cam swap in the search feature located in the 1:30 direction at the top of this page