Post Katrina, Another ka with a Capital T

Your premier source for information on the Turbo KA: KA24E-T and KA24DE-T (KA with aftermarket turbo kit)!
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SLde_Show_Enthusiast
Posts: 158
Joined: Sat Jan 03, 2004 7:10 am
Car: 95 240sx

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Last summer, I blew my original motor and found a nice ka/transmission from a kouki s14 with only 29k on it, so i snatched that and finally got it turboed a week ago. Compression is 200psi on all 4 cylinders. I'm using the ngk colder plugs, bkr7e-11(i think that's the part number).

A Boost Designs turbo kit that I bought from a friend who's car was flooded because of hurricane katrina. His ka was blown and he couldn't move the car.

t3/t04e .50 trim .60 a/rwastgate spring set at .60bar(8.7psi) but it's spikes up a hair pass .70bar(10.15psi). It is also tuned for that spike to thanks my zeitronix wideband meter. My afr numbers are 11.20-11.60....Wanted to stay safe, I think those are good numbers.

deastchwerks.com 480cc injectors and fuel pump hardwire kit, walbro 255lph fuel pump, z32 tt fuel filter, apexi safcII, apexi multichecker, greddy peak n hold boost gauge. Z32 (n62) maf, I got it working now, I had the wiring backwords, thankgod it didnt fry the maf.

Custom 3" midpipe with flex pipe added leading from the downpipe (eliminating the test pipe) connecting the apexi n1 duals. Stupid boost design's downpipe design :? boost design's 2.25 inch fmic piping with a greddy intercooler that my friend had. 1g Dsm bov recirculated, it's nice to be able to listen to music without having to turn it up full blast to overcome exhaust sound.

Cusco solid engine mounts. Ebay cooling panel. Asp underdrive crank pulley.

Car runs great and pulls hard....Love it! Feature plans: get altima dual electric fans or put the stock clutch fan/shroud back on. Get a koyo radiator.

Picking up speed is great but my brake sucks!!!...Already orded axxis metal master pads for the front and rears and rotors for the z32 calipers that's been sitting at my house for a year (was 2 lazy 2 order rotors)....now that i really need them...

I have a one slight problem....car would die on me if i'm crusing to a stop and put it in nuetral, the rev's would fall so low and die.anyone have this problem? if so, please respond...

Thanks to drft180 or lanceka-t for helping me tune, thanks for steve for hooking me up with a good price on this kit and pulling me....ka-t tech fourm and members and all my other boys who helped me with the process.
Modified by SLde_Show_Enthusiast at 10:29 AM 1/10/2006


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SLde_Show_Enthusiast
Posts: 158
Joined: Sat Jan 03, 2004 7:10 am
Car: 95 240sx

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o yea, that's a real garrett turbo.... not some knock off..

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Rusted_PS13
Posts: 675
Joined: Sat Jun 04, 2005 8:56 pm
Car: 1991 Nissan 240SX

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nice, now i wish i had a good KA to start with

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S14tat
Posts: 714
Joined: Thu Aug 29, 2002 11:39 am
Car: 2007 FX35
1994 Acura NSX
1996 Honda Accord coupe
1995 S14 KA-T *sold*

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very clean car, what kind of rims are in the front? are they the base model IS300 rims? i know the backs are painted cobra rims.

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GEO
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Joined: Mon Jul 07, 2003 3:15 pm
Car: 95 240sx KA-T
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Yeh nice car. I ahve the same deal, my wastegate spring is set for 7.25 psi and my gauge reads about 10.15psi.. Where do you get your boost source from for the wastegate? FPR line? Your dying because you have to set your de-cel settings on SAFC. I got mine at NE1 2.0 and NE2 2.3 I believe.

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SLde_Show_Enthusiast
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Joined: Sat Jan 03, 2004 7:10 am
Car: 95 240sx

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S14tat wrote:very clean car, what kind of rims are in the front? are they the base model IS300 rims? i know the backs are painted cobra rims.
front wheels are advan avs model 6 wheels...17x8 +35 offset, with 10mm spacers so they are really +25 offset..
GEO wrote:Yeh nice car. I ahve the same deal, my wastegate spring is set for 7.25 psi and my gauge reads about 10.15psi.. Where do you get your boost source from for the wastegate? FPR line? Your dying because you have to set your de-cel settings on SAFC. I got mine at NE1 2.0 and NE2 2.3 I believe.
well, I'm recirculated, so I turned the de-cel air off....I believe that only needs to be on when you are venting bov...

my boost source is coming from the fpr vaccum line..

thanks for the comments..

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Chezedik
Posts: 4726
Joined: Tue Dec 17, 2002 8:35 pm
Car: 1991 Nissan 240sx

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You may want to add a vac line on the hot side, and then your boost should look right. Is it possible that your gauge is reading from the hot side, and your boost sample line for the WG is from the cold side. The way it sounds, it seems likely.

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GEO
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Car: 95 240sx KA-T
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Yeh I am moving my wastegate vaccum line to my hot pipe int eh spring. Should fix the 10psi creep.

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fiznat
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Very nice looking KA-T, slide show. Good work!

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Jookmasta
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gets the approval from me...........good stuff. so ten psi from the to4e with the 480cc injectors...........how are ur safc maps? how's that zeitronix working out for ya? congrats again on the setup.

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SLde_Show_Enthusiast
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Car: 95 240sx

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Jookmasta wrote:gets the approval from me...........good stuff. so ten psi from the to4e with the 480cc injectors...........how are ur safc maps? how's that zeitronix working out for ya? congrats again on the setup.
safc maps, when we tuned it, we did a total of 10 runs to fune tune everything, 480cc injectors @ 10psi, I have to take away fuel like -40 or -50 on low throttle and on high throttle, the most i take away is like -20(while im in boost)...the 480ccs are awesome, gives me more than enough fuel for my setup....I can't believe I was thinking about getting 370s..

the wideband is nice, easy to work with, and very user friendly.....the night we tuned it, we did a pull, then stoped the car....went to the individual rpm points on the safc, and looked at the same rpm on the labtop....and adjusted fuel from there.....my afrs are ok, it starts off 11.40 early in boost and gets a tad richer as rpms increase...like 11.00 flat, it's good to be safe...

although, the day after i tuned the car, my wideband harness(leading to ecu) had caught fire so i have to get another a/f meter and harness from zeitronix...

i think it happened cuz the wires are very short and it probably pinched from opening and closing the glove box so much......idunno, but ima replace it and try 2 retune it asap because now im the boost is creeping to .80bar(11.60psi)! oouch! i have to be careful, cuz I dont want to creep to .90bar(13.05psi)....im sure my motor will give at that boost level...

11psi does feel good and it's lasted 4 days now...

Dam i want my wideband back

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SLde_Show_Enthusiast
Posts: 158
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Car: 95 240sx

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....here's some more pics with 3 and 1/2 week old hids :-Dedit, this pics were taken before i added the spacers and midpipe.... du mah! gotta love the black soot left behind by open downpipe and 480cc worth of richness...
Modified by SLde_Show_Enthusiast at 5:11 PM 1/16/2006

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grimple1
Posts: 533
Joined: Wed Aug 18, 2004 4:32 am
Car: 95 240sx Zenki

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Ok, where'd you get the bumper?


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Chezedik
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Car: 1991 Nissan 240sx

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What kind of HIDs are those, what did they cost you?

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SLde_Show_Enthusiast
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Car: 95 240sx

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grimple1 wrote:Ok, where'd you get the bumper?
ebay, 220 shipped...
Chezedik wrote:What kind of HIDs are those, what did they cost you?
HIDs came from a groupbuy from houston240x.com ...260 shipped...brand is xenon...6000k

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partymonster 975
Posts: 1100
Joined: Sun Jul 10, 2005 7:44 am
Car: 03 Maxima SE, 94 Corolla

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whats the color.

crzycav86
Posts: 3836
Joined: Tue Aug 05, 2003 1:28 pm
Car: 93 Nissan 240SX KAT

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DU MAH!

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Craving4Boost
Posts: 1495
Joined: Sun Dec 19, 2004 10:44 am
Car: 91 240sx fastback

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wrap that turbo

slipnfall
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Joined: Mon Jan 13, 2003 9:43 am
Car: '06 D40

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Excuse me if this is totally wrong, it's just what I've picked up from browsing the KA-T forums(someday!). Anyways, you're dipping idle and near(?) stalls sound like a result of how you have your BOV recirculated: it recirc's *after* the MAF, so the ECM isn't expecting that extra air. In fact it doesn't even know it's there, there's no way to meter it. When you put the clutch in on decel, I assume you let off the throttle as well? That pressure has to go somewhere, because the throttle is closed and/or the engine isn't ingesting it. So wouldn't routing your BOV return to before the MAF help with this problem?

crzycav86
Posts: 3836
Joined: Tue Aug 05, 2003 1:28 pm
Car: 93 Nissan 240SX KAT

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Yeah, you're totally wrong.

All of the air in the piping gets metered. The bov vents air that has already been metered, so there's no reason for it to go through the mafs again.

You got it backwards - atmospheric bovs tend to run rich when it vents air because it purges metered air that doesn't go into the engine. An atmospheric bov that leaks at idle will run lean for the same reason- the engine is ingesting unmetered air.

So you were wrong, but at least you're thinking. Keep at it.

slipnfall
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Car: '06 D40

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Oh duh, of course it's already metered... I guess I just saw the recirc line after the MAF and 'impulse posted'. I think I may have had blow-through and draw-through in mind... in the case of a blow-through, you can run open-BOV because the MAF is directly before the TB, correct?Thanks for taking the time to correct me.

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SLde_Show_Enthusiast
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Car: 95 240sx

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partymonster 975 wrote:whats the color.
just checked under the hood....paint code is AL0i dont know if that is a letter "O" or a number zero...
slipnfall wrote: So wouldn't routing your BOV return to before the MAF help with this problem?
well, I don't think so, from what i remember from researching. You must rout the return nipple for the bov after the maf because the are that is being vented by the bov is already read by the maf...

remember, exhaust spins the turbo wich sucks air throw the maf, and the maf calculates how much air is entered, then it goes threw/out the turbo(compressed), then threw intercooler then into intake mani....once you let off the gas pedal, the bov vents some air(so you wont get compressor surge). That extra air is going back into the intake pipe(after tha maf) because that air is already read by the ecu and the ecu is injecting enough fuel for the amount of air...

sorry if im a little incorrect or confusing, but i tried to be as basic as possible...correct me if i'm wrong...


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Iamjohnhayes
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Joined: Mon Apr 25, 2005 9:42 am
Car: 89 Single Cam Hatch

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Slip:

the reason you recircukate after the maf is b/c the air has already been metered by the maf when it got sucked in by the turbo the first time. if you were to recir it before the maf it would be the exact same thing as venting it into the air.

As for the boost creep:

have you tried to hook the wg vac line to the compressor housing. the spring could be set to account for the 1 to 2 psi difference between engine vac press. and the press off the compressor housing.(allthough i have never heard of it)

slipnfall
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Car: '06 D40

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BTW, sorry if it seems I'm thread-jacking. You have quite a tidy engine bay SLde_Show... wire clutter always looks sloppy to me, good job!

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Iamjohnhayes
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Car: 89 Single Cam Hatch

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thats kind of funny we both posted the same thing at the same time. btw those look like nice hid's esp. for that price.

slipnfall
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Car: '06 D40

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haha, wow... everyone likes to correct the KAT newb. j/k, thx guys/gals.

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SLde_Show_Enthusiast
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Joined: Sat Jan 03, 2004 7:10 am
Car: 95 240sx

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slipnfall wrote:BTW, sorry if it seems I'm thread-jacking. You have quite a tidy engine bay SLde_Show... wire clutter always looks sloppy to me, good job!
thanks.....i know i have 2 clean some stuff up...
Iamjohnhayes wrote:As for the boost creep:

have you tried to hook the wg vac line to the compressor housing. the spring could be set to account for the 1 to 2 psi difference between engine vac press. and the press off the compressor housing.(allthough i have never heard of it)
yes, its hooked up to the compressor housing as we speak...

i might not worry about it, i've been driving like this for a week or 2 now with the 11psi spike...if it's lasted this long...it should be ok...I think?

but for real...i think im safe beacause the night we tuned it, it spiked a hair past .70bar(10.15psi or a tad more)...so we tuned for for that amount and we left it a little rich in the higher rpms like 3500k on up....the afr's are around 11.00 up in the higher rpms so that 1psi spike shouldnt cause me to blow...I think?

Modified by SLde_Show_Enthusiast at 6:57 AM 1/18/2006
Modified by SLde_Show_Enthusiast at 7:03 AM 1/18/2006

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Chezedik
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Car: 1991 Nissan 240sx

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You still might have inaudible ping, you need to tune with a knock gauge. If you aren't pinging, though, run with it.

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SLde_Show_Enthusiast
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Car: 95 240sx

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Chezedik wrote:You still might have inaudible ping, you need to tune with a knock gauge. If you aren't pinging, though, run with it.
the highest my knock reaches is around 30 on the safc

jrivera
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Location: South Carolina

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nice car


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