Dyno chart turbo'd KA-E truck mani stock internals

[seang]

I'm a big fan of all-motor, nothing else sounds like it. But lately I like the looks of this...

(BTW, this is not my truck; it is only the same color)[IMG][/IMG]Just look at that torque curve.
Modified by seang at 7:51 PM 1/16/2010

[seang]

Here are the owner's replies from the original thread...

"7psi T3/T04E all original truck engine (note torque). Dyno'd in 3rd so numbers are a little low. Still fairly strong for a low comp low boost truck KA24E IMO. Also I'm using the AEM FIC to bypass the MAF By feeding the ECU voltages via boost and RPM I was able to make a decent driving tune. Some more small tweaks are needed but it wasn't much different than tuning a standalone."

"Drives good, wish I had more dampening... Needs more rebound resistance. Needs camber in the front... Steering feels decent for a swing arm. My shortened and bent shifter works great."

"The stock ECU is still in place, the AEM feeds the ECU maf values from a psi/rpm map. Its okay so far, for some reason I'm have issues with the narrow band letting it run rich during closed loop. Maybe I'll go back to the AEM WBO2 output... "

"I'll have to say its a beast to corner hard. Very odd feeling, its a fast BOX NEEDS Front camber!! It doesn't PLOW (terminal understeer) but it won't oversteer. Reminds me of my E36 BMW. Not the fastest but its entertaining" "The JGS KA24E starter package works good on the D21. It doesn't bolt-on to the stock exahaust but there's not much available for large D21 exhausts so a custom one is a must anyhow."

"Its a fun rig to rod on, MAF-MAP conversion still needs work but its driveable. I need to re-valve the shocks BAADD." "good bye torquer truck manifold... 10 points to the person to figure out where the 65mm throttlebody is from... "

"I have a MAF back on it so I can quit using the temperamental MAF to map conversion. I'd like to get it on the dyno and up the boost for some more fun. I have some 255 DRs for the back and I think it should actually hook pretty well for some local 8th mile fun. I now have quad shock (2 extra $16 napa specials) on the front and it works much better (the QA1 street C/O could NOT handle 800lb springs which is still pretty soft), I lowered it a bunch front and rear too. It made a good leap towards being what I want."


Modified by seang at 10:07 PM 12/10/2009

[pejsa s-13]

i want that set up sooo bad i have that truck in my photobucket for inspiration

[seang]

That setup on my 4x4 would sling some f***ing mud let me tell you, not to mention suprise the hell out of people.

I think it might also make it harder to modulate throttle inputs for slow obstacle crawling in 4lo. This is where an adjustable boost controller would come in handy.

Another owner from the same forum I snipped this from said he blew out a few trannies on his 4x4 turbo, but he was really hard on them. For the most part it held up.

With the transfer case in low, it's fun to hit 5th gear by 45mph (it feels like a rally car). But it multiplies the torque load on the gearbox about 2.5 times more than normal. This is already alot with just the stock motor, not to mention a boosted one. Bam! Bam! Bam! Ka-Boom! ..$$$$$...
Modified by seang at 12:35 AM 12/11/2009

[PEZi]

TORQUE!!!

[seang]

This one is a little more rudimetary and crude. It is also less powerful, (probably because of the lack of I/C), but hey it's still a turbo. Owner is a member here, but this was posted way back in 2003. I'm suprised the photo is still hosted, but here it is. IDK what ever happened to him or his truck. I found it in the KA-T forum.

"I took my hardbody to the dyno today and made a very depressing 157 @7psi to the wheels on a mustang dyno......I still have some spark and fuel issues but i will fix that, not bad though for a Bone stock KA with a turbo.. guess its time for a different intake and a cam "[IMG][/IMG]

Quote » Originally posted by Projex240 jeez turbo truck--i made that on motor. You may hove some issues other than spark and fuel--maybe timing?

The 240 had more power than the sohc motor so that is probably why, plus you probably have stuff done to your car too huh? My truck is bone stock other than a turbo, It would have only put down 90 to the wheels b4 the turbo, so thats a large improvement i think------------------------------------------------------------------------------------------------

I believe the stock 232/232 cam wasn't the limiting factor in his 157hp dyno number - I'm quite sure, with boost, it could have supported more than that. -SeanG-
Modified by seang at 7:57 PM 1/16/2010

[Rev_D21]

Doing the Stanza ECM swap and some tuning I bet both those trucks could pull even more impressive numbers if they haven't already done so. Seeing the truck TB used instead of the 240 intake is inspiring to me because that's not a swap I'll be doing, at least not on my current KA.

[seang]

Why can't you tune a truck ECU? I thought I remember reading on HybridKA (I know you are a member) that the truck ECU is a tunable unit.

[seang]

Just a few pics of a hacksawed MAF. The "fabricator" made it into something to clamp a tube onto, using JB weld to build up on the lip (look closely at the bottom pic). He ran a "regular" z32 MAF with a JWT ecu, so the stock MAF was no longer employed...[IMG][/IMG][IMG][/IMG]
Modified by seang at 4:54 PM 1/4/2010

[Rev_D21]

It's easier with the Stanza U12 ECM. The truck ECM is nothing like the 240 or the Stanza. That's why most people swap over. I think I have 1 post on Hybrid, I am mostly a reader over there. I will have my socketed U12 ECM (all soldered up) back from the father-in-law one of these days.

[moneymike]

yo where did you get that throttle body from. im getting all the parts i need to boost my hb.its a 91 sohc ka24e. i got everything i need i just need to run those fmic pipes and that lil set up you got looks sweet man. if you can get back to me asap that would be great or anyone else in that case.

[seang]

It's not my truck, it's just the exact same color. The truck shown has coilovers in the front, and (I think) 240sx rear sub frame and suspension.

The builder/owner of the truck is JGSturbos.

The throttle body pictured is a stock unit, but the MAF has been hacksawed out, and a lip built up with JB weld so a tube can be clamped onto it. An inline MAF with different ECU is used instead, because the stock MAF is temperamental I hear, but the manifold itself is good for some power. No need to switch to a 240sx manifold unless you want to. Pic of hacksawed MAF is NOT on the red truck, it is someone elses.

I think JGStools makes a MAF adapter if you don't want to fabricate it. They actually make a turbo kit for our trucks.http://www.jgstools.com/turbo/d21main.html


Modified by seang at 9:15 PM 1/14/2010

[BronkStang]

what do the obdII guys do?

[moneymike]

yo i looked on that link and didnt find anything

[seang]

what do the obdII guys do?

I don't know exactly. What is different besides the distibutors?

yo i looked on that link and didnt find anything

The parts are listed as ka24e parts, it's the second down on the list.

[moneymike]

yea i looked though it like 8 times i still dont see the part i needi need something to connect from the air intake so i can run my pipes to the frontmount. w/o removing the maf

[seang]

i need something to connect from the air intake so i can run my pipes to the frontmount. w/o removing the maf

Is this what you mean (see pics)? Thanks for the info VG33T @ another forum I'm not at liberty to name. I can copy/paste his exact words, though.

I could never get the safc to work with the stock d21 maf. The afr would cintinuously fluctuate from rich to lean. I swaped in a 240sx ecu and maf, problem solved. Here are some pics of that setup.

[IMG][/IMG][IMG][/IMG][IMG][/IMG][IMG][/IMG][IMG][/IMG]

Here is my first setup that lasted one week, shown blowing through stock MAF.[IMG][/IMG][IMG][/IMG][IMG][/IMG]That was at 8psi. Lesson learned, you cant just throw on a turbo and go.
Modified by seang at 8:00 PM 1/16/2010

[seang]

That's two owners testifying that the stock MAF fluctuates between rich and lean while under boost.

What I haven't been able to distinguish is whether or not they were running wideband o2 sensors while this was happening, and they didn't respond when I asked about it.

From what I understand, the first (red truck) owner tuned his setup with a wideband, but ran a narrow-band afterwards. He mentioned that running a wideband might have defeated the rich/lean loop, but before he elaborated more on that, he swapped a draw-through MAF sensor.

The second owner shown (VG33T) swapped a 240sx ECU and MAF.

So, drawing from what is here, the stock MAF sensor MIGHT have worked alright if a wideband o2 sensor was run 100% of the time, but the owners swapped in other ECU's and MAF's instead.

RevD pointed out that JECS U12 Stanza ECU's are popular swaps because they are tuned more easily than the D21 Hitachi ECU. Apparently, SOHC 240sx ECU's are also fair game.
Modified by seang at 3:07 PM 1/16/2010

[seang]

yea i looked though it like 8 times i still dont see the part i need

Try this link, I think this is the part, but the link won't work on my computer for some reason.http://file:///P:/turboDOCS/tu....html

Other than that, I can't find a pic of the part, either. If you really want to see it, you might have to call JGS themselves and talk to a rep.