Ka24det project

[nissan240boy]

Hi I have a 92 nissan 240 with a ka24de engine, I have done my research and im very serious about this build, please read over this and tell me wat you think, I read that the engines come stock with forged rods and crank, so I am replacing the pistons, crank bearings, timing chain and guides and clutch, here is my parts list, let me know if I need anything else

Forged cp pistons and piston rings
Stock autozone brand crank bearings
felpro headgasket set
ebay t3/t4 turbo
Turbo manifold
timing chain kit and guides
walbaro 255 fuel pump
600 cc ebay fuel injectors
innovate wideband fuel/air gauge
Regular fmu or rising rate fmu, not sure which to get
centerforce or southbend 350 ft/lb clutch
rfl bov
custom homemade adjustable external wastegate
jdm sport intercooler
welded rear diff

Thats the list and my goal is to drift with it at a track, and use it as a back up daily driver

[S13_RB25]

It looks good, but since it'll see track and maybe as a DD, I'd ditch the ebay stuff! Also what is your power goal??

[broken40s]

screw the fmu, and get a tune, or tuning software. i'd also spend a little bit of money and get some decent rod bearings. i've spun way too many to cheap out on those. i've also heard a lot of bad things about knock-off ebay turbos

[neverlift]

you dont use an fmu with larger injectors.


ditch the ebay turbo, go bw/garrett or something name brand, the turbine shaft spins over 100000 rpms..

better bearings at least use clevite/acl.


I dont see anything about a tune or a larger afm..

spend the larger portion of cash on the tune and turbo side. Stock pistons can do 300whp IF the tune is good.

[nissan240boy]

Well I got a header and t3 turbo for free and its new, I think its a cheap turbo cause thetes no name on it, and y not use an fmu, I dont wanna spend 2k on a tuneable computer, injecto

[nissan240boy]

Well I got a header and t3 turbo for free and its new, I think its a cheap turbo cause thetes no name on it, and y not use an fmu, I dont wanna spend 2k on a tuneable computer, injectors just went out so new injectors are a must, so I might as well buy good ones, I found 600s for 300 bucks, and rings are bad so might as well put the pistons in, I want like 350hp and shell drift great, and with bigger injectors I can get more fuel, and as the boost rises the fmu slows the fuel back to the tank therefore rising fuel pressure and means ittlmore fuel out the injectors, stock injectors wont put enough fuel out amd itll lean out, with big injectors I might rrun a little rich at idle, but will a rising rate fmu work and be reliable, and can I use my cheap turbo since I already have it, I can always upgrade later right, please reply and give info and advice thank you

[slidestyle69]

OK first, yourtypingskillsarehorrible.

Your in over your head if you dont understand the dire need to have a good tuneable ecu ESPECIALLY with a KA-T, if my comment makes you angry and question why i said that then please buy a CA or an Sr. Something that already has an ecu designed to be on a boosted engine, timing maps etc etc.

An Fmu is straight up garbage and for the sake of that KA please dont use it, if you want to be a dumbass, get an Apexi Safc and find somebody in your area that knows the device that can tune the poor little KA.

550cc injectors will be good up to 350ish HP. 740's will be a little much but can be tuned out to idle good with a good tuning software, not any garbage you have listed. Ebay injectors sounds like s*** and stray away from that crap also for the turbo. Go to isis peformance and get you one of their cheaply made decent turbos that have a warranty.

Build your car cheap and it will drive like a cheaply built car, dont want to listen. Go with your plan and then be sure to update this thread later with what part of your motor failed first.......................

[slidestyle69]

Hi I have a 92 nissan 240 with a ka24de engine, I have done my research and im very serious about this build, please read over this and tell me wat you think, I read that the engines come stock with forged rods and crank, so I am replacing the pistons, crank bearings, timing chain and guides and clutch, here is my parts list, let me know if I need anything else

Forged cp pistons and piston rings.......
*Stock failzone brand crank bearings*
*failpro headgasket set*
*ebay turbo*
Turbo manifold
timing chain kit and guides
walbaro 255 fuel pump...
600 cc ebay fuel injectors
innovate wideband fuel/air gauge....
Regular fmu or rising rate fmu, not sure which to get......
centerforce or southbend 350 ft/lb clutch
rfl bov
custom homemade adjustable external wastegate......get something internally wastgated.
*ebay* intercooler
welded rear diff...

Thats the list and my goal is to drift with it at a track, and use it as a back up daily driver

[broken40s]

its not all about the fuel and afr's. you also wont be able to properly adjust the fuel with just and fmu. you have to get your timing right too, and you're only gonna be able to fix that with a tune, or tuning software. nistune is no where near 2000. prolly spend about the same as with a jwt or enthalpy tune, but you'll be able to change it yourself when you make upgrades and its fully adjustable.

i ran 7 lbs with just a redtop turbo on a stock ka using an safc, 370 injectors and retarding the distributor like 4 degrees and it wasnt enough. broke lands on all 4 pistons. not all about getting fuel right. gotta get timing right too. i've also seen people warp pistons from running too rich after replacing injectors and not tuning properly for it

you're gonna do what you want anyway, but take it from the people that have learned lessons the hard way and dont make their mistakes. too expensive to make them yourself. but since you already have it, i'd go ahead and run that turbo.

[nissan240boy]

Ok fair enough, ill use my turbo, and im gonna give ebay injectors a shot, they are 600s, as for pistons do I need forged or is stock good enough for around 300hp, and as for tuning, hows this sound, an aem plug and play fully programmable computer for 1500. Sound good, now as for right now, im short on money but the injectors are bad in the car if I put 600s in the car on a stock engine with no turbo, just for now so I can drive it, will it run ok and not hurt anything?

[broken40s]

you can put them in, but if you dont have a tune for them, it'll mess up your pistons and cylinders over a short time, if it'll run at all. stock pistons are fine for 300. people have taken them to 450 or so, but the tune has to be spot on or it wont last at all.

[slidestyle69]

HKS 550cc's for 300 bucks, great idea..do it you wont do it

http://www.ka-t.org/forums/viewtopic.php?t=53531

[nissan240boy]

Okay heres the plan, for now im gonna get stock injectors, new guides and timing chain to make the noisy tapping go away, then my t3t4 turbo, now my homemade wastegate I believe will open at 8 psi anf I can adjust it higher but 8 is the lowest it will go,so will stock injectors be good at 8lbs, and ill be getting an aem fully adjustable plug and play computer. So im not gonna replace pistons or anything, everything sound good, I figure itll cost me 2000 bucks for everythimg. Thanks guys please reply

[slidestyle69]

You should perform a compression test on your motor before hand to know how healthy it is, If a cylinder is low then its just gonna get worse after boost.

Your homemade wastegate sounds retarded, Why not just get a bottom mount manifold with a t25/t28 flange and pick up an sr20 t25, *internally wastegated* and a manual boost controller.

The AEM ems is a great system IMO, DO it.

Take your time with the build, the ability to boost your motor will always be readily available so cutting corners and not getting all the right parts will not pay off.You might be overly excited thinking about getting the back tires loose catching second gear in front of your friends but if not done properly, it will only be a couple of hard pulls before your poor little KA is broken and then eventually the next guy with a cool car will come along and be getting laid by the ladies and you'll just have a broken car with no money.

Pick up some s20det injectors. 370cc's, thats 100cc's over the ka and you'll be good to around 250hp.

Your updated list you just posted is far from complete, tune would be 300-400. You need a fuel pump, intercooler, exhaust work done, gauges(oil,boost) cooling fans or clutch fan with the SHROUD

If you want to save a little money, check out Jimwolftechnology.com, otherwise your gonna spend 3/4 of $2000 on the AEM system and a tune.

[nissan240boy]

I already have guages, and I can handle the exhaust work, now let me explain the wastegate, im using the actuator off my ihi turbo I used on my probe I used to have, now the actuator.will be connected to a throtle body bolted to the pressure side after the intercooler and when boost hits 8ls the actuator will open the butterfly valve on the throttle body, so its an adjustable atmosphiric release wastegate, and I have a jdm sport intercooler, the ill check compression but my car starts to blow blue smoke when I take the rpms up to 6500 so the rings are starting to go, so ill.replace the rings later down the road when they get worse, and I wanna take my time with this build, I want this car to be my drift car and have it for a long time, I love 240s and drifying

[moso]

This thread rulez!

[slidestyle69]

now let me explain the wastegate, im using the actuator off my ihi turbo I used on my probe I used to have, now the actuator.will be connected to a throtle body bolted to the pressure side after the intercooler and when boost hits 8ls the actuator will open the butterfly valve on the throttle body, so its an adjustable atmosphiric release wastegate

Man you were obviously born yesterday or raised by aliens.

A wastegate is ONLY Internally inside the turbo(internal wastegate) and has an actuator attached to the outside of the turbo and externally wastegated(external wastegate) which is mounted to the exhaust manifold. If you have no wastegate controlling the turbo then how is your "wastegate setup"supposed to work when the turbo has nothing to regulate the amount of boost it produces? Save the paragraph because it wont work. The only thing that opens the butterfly valve on the throttle body is your gas pedal LOL. I normally dont talk to noobs about things over their head but i knew there was something you was going to say that was gonna make me laugh hard and i thank you for that.

[compactfean]

I think what he was trying to say is that he wants to use a throttle body as a bov....jank still. Just buy some real parts.

[nissan240boy]

Okay guys did some looking, found a 60 dollar wastegate on ebay, adjustable from4 psi to 10psi and found a universal inercooler piping kit for 90 bucks, sound good

[slidestyle69]

[nissan240boy]

Ok guys making progress, got the turbo on, intercooler and piping is done, welded rear is in, body kit is almost on and car is almost ready for primer, hoping to paint it in a week, still have to but a bov on and wastegate, exhaust from turbo to cat, boost gauge needs installed, now im considering going with the jimwolf ka24de computer for 700 bucks but wat all do I gotta do different if I use that computer? I just want the car to drift good and im happy oh yea and be reliable lol, but wat injectors 370s, and do I still need a wideband since the computer isnt programmable, I know I gotta hook up a map sensor and iat sensor but anything else I should know bout

[compactfean]

How are you going to hook up a map sensor when your ecu reads a maf? Lol. Oh and reliable goes out the window with cheap parts but from the sound of it, you will just have to find out yourself. If you are going to build a car pick 2 out of the 3 options....you can't have all three. Fast, reliable, and cheap. 370 cc injectors will max out on a 2.4 around 10 psi as well as the stock maf. It is absolutely a must for a wideband for anything that isn't a stock tune. But then again, if your not sure what afr you should be at than I guess it doesnt matter. If you are just looking for a cheap tune id go with e-mance. tell them what your setup is and they will put a base tune on your ecu for your choice of turbo, maf, cams, injectors, etc. careful with an ebay wastegate....that thing sticks closed and hello 20 psi on little injectors and boom. Is $200 difference in a wastegate worth replacing a motor.....your call.

[nissan240boy]

So can someone tune my stock ecu, or do I need an aftermarket ecu, and dont I need a map sensor cause otherwise how will the ecu know when the engine is boosting, I read in a forum bout using the wires from the maf and repin one wire on the ecu, so when u do that do u not need a maf sensor or hows that all work

[nissan240boy]

Can I please get an answer to my question, with a jim wolf ecu wat sensor reads boost, do u leave ur maf sensor on and put it on after the turbo or is there a map sensor that gets wired in, I have everything figured out except this so please tell me how to do it.

[compactfean]

There is no map sensor. Jwt and all the other tuning companies use rpm, and maf voltage to give the right amount if fuel. So for example, my 200sx ser has a jwt ecu tuned for a 93 cobra maf (larger hp range) 50lb msd injectors and a t28 turbo. My 240sx has an e-mance tune for a z32 maf, 740cc tomei injectors, 260 tomei solid cams greddy intake mani and a gt3071r turbo. I also have a set if tuned chips from e-mance for the same setup with race gas. Get it?

[moso]

this thread is ridiculousness. almost anyone posting any of these questions will usually be escorted to the search button. do yourself a favor and read any of the extremely numerous threads on the basics of boosting the ka, and stop trying to be cheap!!

[compactfean]

^ ^

[nissan240boy]

Ok thanks I get it so a jwt ecu uses the stock sensors of the car, the maf goes after the turbo right? And im gonna stick to 6 lbs wastegate, I figure for now using a cheap ecu the lower my boost the less likely it is to blow up. Cause I want my car back on the rd and im gonna save up over the next year to do the ka24det right

[biggie]

If you are worried and using cheap stuff/no tune, put it back to NA. No use in blowing it just to get it running.

[nissan240boy]

well im gonna drive it around for a while with no waste gate so it wont boost. im gonna save up a couple weeks for the ecu, i did some searching and seems a lot of people go with emance and have nothing but good results, so ive decided its cheaper and seems better than the jwt plus from wat i read its also tunable if u buy a chip as well. now i understood that emances ecu for the ka24det is called an enthalpy ecu and it cost 265 bucks. So im gonna get this now what wastegate would be best, is less boost more reliable in a sense? So like 6lb, 8lb or 10lb wastegate, i want somewat reliable and i understand theres no guarentee of reliable cause im going cheap but i want to give the engine the best chance of running a while, i read that a guy had an emance ecu and his car drove fine for a year. Id like to get 6 months out of the car only driving maybe 200 miles a week with it and driftin a little here and there boostin it. When i save a lot of money up in 6 months to a year im gonna do it right and rebuild it and use good parts and not go cheap but for now this is what i can afford so yea, thanks everyone for helping me so far, this is a good learning experience for me and ive learned a lot. ill keep posting as i get the rest of the parts, but my main question is does the emance enthalpy ecu work pretty good and worth the money?