s13 DOHC? or s14 DOHC?

 

S13 dohc.

 

That really shouldn't matter, there essentially the same.

Injectors I would run no big then that stock S13/S14 SR 370cc Injectors. You dont need the AMS Fuel Kit unless your Making like 450+ whp. The SR Inj. and Walbro 255 FP will do you more then enough.
Also since your going to be using the Xcessive Manifold you'll want to either make a Custom Intake or buy the 89-90 SOHC Intake pipe due to the TB being Up top and Level now rather than Down below and angled up.

As for an ECU get something that you can tune or someone else can tune because if you get an JWT, every time you want something changed you'll have to send it back and they charge every time...

 

KA s13 and s14 cams are different, s13 240/248, s14, 232/232

 

Haha, believe me I know that but if he's "Building" the motor why would you stick w/ the stock cams? Considering he's Over Boring and has a High RPM Manifold (Xcessive)

 

I know you know this, but does he?

 

Probably not
Valid point

 

Cams: 248 intake side, and 275 on ext. side... or something else.

 

Woah, where did those specs come from?

 

Can't I just get some plug and play cams? Like Brian Crower or something

 

specs came from Nismo Racing cam set.

 

They are PnP and IIRC those are Sets on it's own 248/248 and 275/275...

 

I know this, you can mix and match.

 

intake side 288/ exaust side 292 also

 

but You can get the KA24E pistons and they will raise the compression in the DE to either 11.1:1 or 11.6:1 depending on which year you get. You are also goin to want cams with duration somewhere around 270 and with a lift of .430 and lets not forget you'll need every bolt on. You can also get a set off 99 chrome altima piston rings, if you so desire. If you are like me you are also goin to want to balance abd blueprint it and some major headwork.

 

but if you want my real opinion on this, I would recomend not going n/a, and just doing a KA-T build because it would end up being cheaper and more reliable than a high horsepower NA build.

 

With a KA-T build, I would still like to rebuild my engine, but I'd rebuild it with just a normal kit that would replace the stock pistons/rods/gaskets and everything. Because my engine has 170k miles.

Something such as this: Nissan Engine Rebuild Kits from RPM Machine

And with a turbo build it would also be smart to upgrade my entire fuel system, correct? So I would need to invest in higher cc injectors, a 255lph fuel pump, etc. Or would the AMS fuel system upgrade work just fine? I've also read you need a Z32 MAF on turbo builds?

 

you can piece together your own turbo setup for around $1400 using SR parts and a badass pretune ECU. so just buiild your motor as you were planning, then go for the KA-T

 

If you're doing the NA thing still, you probably don't need the aftermarket radiator if your cooling system is fully functional.

Didn't see a long tube 4-2-1 header on the list... lol why not?

Get a tuneable ECU, real time eprom will give you the flexibility you need to max out your setup far better than a mail order ecu ever could.


Turbo's are neat... But its so hard to keep the build small, esp when you're gonna end up with a built motor capable of so much more than the origional budget had been planned for. IE; will quickly go from a bottom mount T25 setup w/ SR parts to a top mount T3/T04E 57trim .68 a/r or bigger. Maybe a T60-1 or something... then it kinda snowballs lol.

 

N/a always cost more for the same power as turbo.

 

How does this look for an engine rebuild kit to prepare my motor for turbo?

Nissan 2.4L 1991-1994 KA24DE 240SX Engine Rebuild Kit

I was thinking about getting some eagle rods, since I heard the stock KA ones are weak as hell.

 

the pistons are the weak poiint in the KA I believe.

 

+1

KA = Strong Rods, Weak Pistons
SR = Weak Rods, Strong Pistons

Strong meaning Factory Forged Part...

 

How much would I be looking to spend if I removed the engine, took it to a shop (with the new parts supplied) and asked them to build it?

Because I'd rather have it done sooner than later, I don't have much time on my hands.

 

That depends on the shop, go down to what ever shop your looking at to do the work and ask them

Tell them Nissan 240SX KA24DE
It's a 2.4 4 Cyl.
Cast Iron Block
Aluminum Head
Dual Cam
How much...

 

n/a is fun but it depends on your intentions for the car. my car is a drift slut now. (formula D legal) and my n/a ka is starting to hold me back at local comps cause its hard to keep up with turbo guys. i know not everybody is into drifting but its something to think about. the mani you picked out isnt work the money for an n/a motor. you money will be better spent in other goodies since its not boosted the huge chamber is gonna drop you lower end torque and thats what makes n/a motors so fun. if you run single cam pistons be ready to get valve reliefs cut in the pistons cause a 248/248 cam setup is pushing it on clearance. a full port job on the factory intake mani and head will make a huge difference. 4-2-1 header is a must. i would go with nothing more then 330cc injectors and a 255 fuel pump. you wont make enough power to max those out. and there is alot of little things you can do like light weight flywheel, one piece aluminum driveshaft, electric water pump, and crank scrapper/ windage trays will also help out a lot. but if your looking for cheap power n/a is not the way to go. n/a motors are more of a novelty item they are rare and quick but by no means are they fast.

edit: cams are gonna be the main thing on a n/a motor. brian crower are junk for n/a my buddys stage 1 cams actually made his motor slower untill about 4700 which on a ka sucks. the best bet for cams are PDM they make n/a specific cams. they have the staggered cut cam lobes to simulate a (variable cam duration) its a cool setup but they are $$$

 

couldn't be explained better :thumbsup