s13.5 - KA25DE-T Build

[ukario]

Hi guys, I am just wanting to share a bit about a build that i am currently working on. I am new to 240's so any advise or tips will be taken into consideration i will be keeping you guys posted with the progress of the build it may take a while to finish and i hope you guys like it.

ok so i bought my 240sx from a dealer who wanted to get rid of it ASAP; he needed the space and i wanted the car. The 240 is a 1993 hatchback SE

[ukario]

ok guys update time I took the engine out and found that there was some silicone on the head gasket. My guess is that it clogged somewhere and made enough pressure to just move it out of place or lift it so oil and coolant can seep into one of the pistons and fry the piston ring.









everything is better with pictures lol. oh and here is a picture of the intake valves ugly.

[Jake The Snake]

Welcome to the forum! It doesn't seem to be very active but it's still a good place to keep track of what all you've done. Have you purchased any replacement parts? What are they plans?

[ukario]

Welcome to the forum! It doesn't seem to be very active but it's still a good place to keep track of what all you've done. Have you purchased any replacement parts? What are they plans?

Sorry i havent been active for a couple of days ive been busy with work but i do have some updates i guess its about time to post them. My plan is to make a drift car out of this build, not crazy on power but enough to get sideways. Ill be adding some more power once i start getting more serious with the sport.

[ukario]

ok guys so reasons i didnt post was because the engine was at the machine shop getting cleaned and over bored. i decided to go .40 over so i can drop the compression along with a cometic head gasket to put me near what i need to boost the KA. with the over bore ive gone from a 2.4 to a 2.5 so hence the name ka25de, i put (-t) because i plan on boosting it. ok so for some pictures.


this is what the intake valve looks like now.


and here are some pics of the block and the head.













i was also able to get in some goodies that will be installed prob over the week end or later on today.













Im not changing piston rods since the internals of a ka motor are already forged they will withstand some boost, the only thing in the ka that was not forged are the pistons which ive already have a replacement for.

[PercieBlaze]

those pistons look purttty! GL i hope to do all this to my KA one day.

[Jake The Snake]

Daaaaaaang! I'm excited to see this thing go. What turbo are you thinking about using?

[ukario]

Daaaaaaang! I'm excited to see this thing go. What turbo are you thinking about using?

Im not sure on which turbo to go with as this is my first turbo build im getting ideas from all over the place but still haven't decided. Im looking for a small turbo so it will spool quick but i also want it to have a good kick of power to it. i know the smaller the faster it spools but the less power you get out of it. any suggestions anyone?

I have some updates for you guys i painted my block and installed the rear main seal also installed ARP head studs and Cometic Head Gasket.









I also received the timing set and a complete gasket set that i ordered yay new goodies

[PapaSmurf2k3]

Looking good.
Just so you know, the stock KA rods aren't forged... they are shot-peened.

Still, they're reliable up to about 350whp. After that, things start to get questionable.

You'd probably be pretty happy with a T3 Super 60 turbo.

[ukario]

Looking good.
Just so you know, the stock KA rods aren't forged... they are shot-peened.

Still, they're reliable up to about 350whp. After that, things start to get questionable.

You'd probably be pretty happy with a T3 Super 60 turbo.

I'll look into the t3 super 60 and thanks for the note on the pistons I'll take it into consideration wether or not to replace them. I'm aiming for just around 350 hp so I might just keep stock for the time being.

[PapaSmurf2k3]

yeah that's right on the fence. I'd suggest keeping an eye out for a cheap used set or something in the classified section... otherwise, you'll probably be ok.

[ukario]

I've decided to keep the OE piston rods for the time being im going to break in the engine without boost for a bit; just get her running then ill add the rods with the turbo set up or i might just settle for 300 hp, really i just want to get sideways and still be able to daily drive and beat on some Nissan hatters.

ok so for updates today guys i have the king rod bearings and my new pistons installed, as well as the head in place ill do the timing over the weekend and post on monday with new updates hopefully have the engine running by this coming weekend.










I also dipped some things into a cleaning solution to clean them out make them appear somewhat new; still thinking on color for valve cover so might stay what ever colour came out after cleaning.





i wish i had some pics of it dirty i think maybe one of my first ones of the engine tooken apart should show how filthy these parts were.


Also im trying to figure out if i have a VLSD but im not sure i took a picture not the best picture but its something. Maybe you guys can help me out and let me know if its a VLSD or not. ill take a better one tonight.

[Jake The Snake]

Don't settle for 300hp! Always go for more. I'm not sure the difference between diff's but I know my S14 doesn't have fins on the cover like that.

[PapaSmurf2k3]

Looks like the standard R200 diff to me. On my R200v, the bottom protrudes a lot more.

[ukario]

Hey guys I was suppose to post updates on monday but i got busy so here are the latest updates; and hopefully i can drop this engine in on the weekend.

I found out i have a #29 ECU, which according to a chart that i found it came from a cali. emissions automatic; that said i researched around on why i would want an automatic ECU on a 5-speed, well turns out i get:
*rev limit +300rpm (Not much but something)
*Timing a bit different. (makes my idle fluctuate a tad bit but not enough to shut it off)
* better fuel map
* and also no governor
-all this due to having to push a torque converter.

Ok so for engine updates i installed timing chains and the front covers. Which pissed me off that they dont make a gasket for the front cover I had to use silicone!!!

i added the water pump and the oil filter housing.


i love this picture by the way ^^








also i bought a BOV yesterday looks clean my friend removed it from his supra and sold me it dirt cheap.

[D-UNIT]

You know if your planning on rocking the stock rods , I would upgrade to arp rod bolts. Super cheap insurance. The stock bolts are likely to stretch and cause a spun bearing! Those bolts are old and should be replaced anyways with at least stock equivalent but arp is stronger and cheaper.

[ukario]

Ok guys big update and I am very sad at the moment. I got the engine up and running but i am stuck on limp mode...ill take a few seconds for you guys to laugh. ok now for the updates,

so like i said i have the engine installed and first thing to happen, the car was vomiting fuel down the exhaust . So i had one bad injector screaming wooooooooooooooooooooooooooooooooooot (WOT), so we had to stop there for the day.











That was Saturday, now on Sunday i headed over to the local junk yard to see if i could find any decent shape 240's boy i was amazed to find one still not pulled and in possibly better body shape than mine, what a shame for that car. Oh well will make a good donor car for the people building their 240's out in SA, Tx.

I got from that car
* 2 injectors since the other two came out defective/broken.

* Stock Header Since my other had all studs broken into the old header (looks just as crappy but not going crazy since im boosting it would be a waste of cash.)

* new seats if you see from my old picture these are a major improvement they don't look as sporty but they are hella confy and way better looking.


* New fan shroud ( mine was all broken n stuff)

* New center counsel i have yet to take a picture of the new one the old one belonged to an automatic and now i have the center item holder.



ok so we installed new injector into cylinder 2 which was the faulty one and yay it fixed a little. about 5 min in we had another faulty injector luckily i had bought two so we changed injector on cylinder 1.

my friend thought it would not matter if we blocked off/canceled off some of the vacuum lines so we proceded to doing so and im not sure if that is why im going into limp mode or not but at the moment thats were i sit anyone have some advise?

At the moment i am going to go back through all the vacuum lines and try to reconnect every thing, also might get a new maf today or sometime this week. i read some threads and most people say its a common maf prob. USE THAT SEARCH BUTTON!!!

[PapaSmurf2k3]

How long has the car been sitting? Its sort of rare that you blow injectors like that. The only thing I can think of is if it has been sitting a long time and you have debris/particulate matter in your fuel, causing the injector to stick open.

As for the limp mode, just read the codes that are coming off the ECU.

[ukario]

Not sure how long it's been sitting, it was token to a dealership were it stayed for about 8 months not moving or being turned on due to it smoking white from the tailpipe.

[ukario]

Ok so I pulled my codes just a while ago and I have codes 12 and 34; so fml my maf is out or the connector and something up with my knock sensor wich I don't know why any tips do I just don't go buy another maf.

[ukario]

So I replaced the maf and car is running and not stopping at 2500 but now it's still stutters what you guys think maybe the timing is off?

[PapaSmurf2k3]

What do you mean by stutters?

Have you checked the timing, and did you reset the ECU when you replaced the MAF?

[ukario]

I was working on the timing last night I couldn't quite get it right so I'm going to work on it today and yes I erased ECU codes but didn't re-check them to see if they re-appeared.

[ukario]

Ok so we re-did the timing and im gonna tear my head of my body. I went from firing from all four cylinders to now only firing from one cylinder. and by stuttering i mean you can step on it and it takes a little bit of time to start reving like it wants to shut off.

How we did the timing was, we placed the first piston on top dead center and installed the dist. that is all we did. i dont have a timing gun and i dont know how to use one unfortunately

shortly after i pulled the codes
*11
*12
*34

[PapaSmurf2k3]

Yeah you're definitely going to need a timing gun. You might be a tooth off. Are you sure your valve timing is correct too?

[ukario]

problem is i dont know how to use one know any good videos or any tips on how i can try to fix my issue?

[PapaSmurf2k3]

http://www.nicoclub.com/archives/240sx- ... iming.html

http://www.nicoclub.com/archives/adjust ... 240sx.html

Basically you get the timing light. It has 3 wires coming from it. 2 have aligator clips on them (one black, one red). Red goes to positive battery, black goes to negative. This is the power for the timing light. The 3rd wire coming out of the light should have an inductive pickup clip on it. This goes around the #1 cylinder spark plug wire.



When you pull the trigger, the light will strobe every time the #1 cylinder is fired. Point it at the crank pulley to read your ignition timing as was outlined in the first link.

[ukario]

ok so i understand how to do it now but how do i set the initial timing i didn't initially set her up so im not sure how it is suppose to be. I know i shouldn't try to warm her up as is since shes only firing on one cylinder at the moment.

[PapaSmurf2k3]

Its outlined in one of those links I sent you.
Put the engine at top dead center, then align the distributor rotor to cylinder #1 spark plug wire.

[ukario]

ok ill do that sorry to sound all noob like i said this is my first ka build. Do i need to remove the tps like some people said i didn't see it in the write up you send me.