Good to know Gabe I thought D21 NAPSZ and KA24E TB were the same thanks for the clear up.......

 

Glad to help!

 

I do actually have the MAF that mounted on the throttle body. I'll keep running the eprom tune for now and hopefully will do some before/after dyno runs to see if it actually worked. I appreciate all the help from you guys, since this is a rather drawn out process. It seems like it's almost imperative to switch over to the 240 manifold/throttle body setup in order to get the top end that I'm looking for. I know it's got to be worth 4-5whp since, in stock configuration, the 240sx Ka24e produced 6 more flywheel horsepower than the hardbody ka24e. Let me look around and see if I can gather the parts. If any guys on here happen to have the necessary components let me know.

 

Hey, rock it till your socks fall off.
Use the truck manifold with a smooth hone and then run a progressive NOS setup and you will be good to go. 70shot that is!!!!! Just don't forget you'll need solid lifters with adjustable valve lash and some retard on timing.

 

If you were able to take a quick look the link listed earlier in the thread to nissancustoms.com there was an individual who successfully switched to a 240sx manifold, throttle body, etc. I was finally able to reach out to him this evening and he'll be putting together a complete with everything I need right down to new o-rings, intake piping, and polished 240sx valve cover to top it off. He'll be removing the SCV's from the manifold and tig welding the holes along with the EGR on the back of the manifold. I'll probably be installing the manifold in stock form to see how the performance gain is, and if necessary will send it out to dan paramore at dpr-racing.com. Just thought I'd give you all an update.

 

see, thats why i wish i had a dyno, to just have somethign stock, dyno it, then change and see what it really does. like, how much hp does the scv's actually add? and things like that..

 

Correction SCV's don't add power they increase velocity while causing disruption in flow in order to break dense cold air. Since it is breaking apart cold air, it takes more energy for a naturally aspirated engine to pump and siphon atmospheric air into the engine. This takes away from power out put, it also decreases runner diameter by consuming open space. At lower RPM's it's granted that it increases lowend torque, but it also allows for less air to enter the chamber at higher RPM.
Another factor that takes away power from the KA24de's is the curved runner lengths. Length generally isn't the problem, but rather the curvature of the runners which also takes more energy to pump air into the engine than straight runners would.
These are all basic fluid dynamic principles
You can see the power potential that the OBD2 engines make with just a swap of the 240/248 OBD1 cam combo, especially since OBD2 and 93 OBD1's don't use SCV's.
But to get to the point stuff like SCV removal generally shouldn't need to be dynoed to prove it's worthy. After all it's a free mod you can do your self.

 

you said obd1 93's and obd2s dont have scvs, but what about obd1 95's? i am assuming that they dont.

 

You are correct OBD1 95'S don't have SCV's. I was just making the claim that the change started in 93.

 

okay, thats what i thought. big vinn, have you ever considered writing a book?