Goin from a H-Body to a 240..Help

Information on the naturally-aspirated KA24E and KA24DE engines.
Turbo_Nismo_EC
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Ok, I have made the decision to stop my turbo H-Body project and go ahead and get a 240 to play with. Now I do know a lot about the 91-95 Nissan Hard Body p/u's, but unfortunately I do not know everything about the 240sx's, which is why I am coming to you guys. I did a search and I really wasn't abole to find what I was looking for so if you have seen this before then I am sorry....I guess my search skills aren't that good yet.

Anyways, I was planning on getting a 1995 240. Now from what I understand this series of 240 was made from 95-98, but since I fully plan to build and turbocharge the KA24DE engine, I thought the ODB-I computer would be best. I do not want to purchase a stand-alone system and I plan on having JWT hook me up with their tuned ECU and injectors like they have with my truck, BUT, from I understand they cannot tune an ODB-II computer this way..correct me if I am wrong please. If there is no real difference in whether or not JWT can tune the ODB-II ECU, then I would be up for any 95-98 240sx.

Second, are there any major differences, or faults, with any of these three years that I should know about? Other than the ODB-I and ODB-II ECU differences, this is all I know about. Does the rear-end hold up well? Do any of the 240's come with a limited slip rear-end? The transmission is the same as the one in my truck so that is no problem, except for the overdrive gear is taller.

The one and only purpose of this car will be my daily driver, that I need EVERY DAY, but I want it to be a street terror. Kind of what I wanted my truck to be, but it will take way too much money to do what I want to it. I am looking for apporoximately 350 hp to the wheels and plan on building the engine with strong internals and a little head work....hopefully to go into the 12's on drag radials.

I know this is kind of vague but my main question is about the ODB-I and ODB-II computer deal. This is the only reason I was going to stick with a 95 rather than an 96-98 model. If there is really no problems with modifying the ODB-II computer then I will have more choices, but for now I can't find the car I am looking for with such a narrow search field. I DO NOT want to swap in an SR20DE-T, I like the KA's, hence the reason I am here. If there is any information, even if I didn't ask it, but you think it is something I need to know, PLEASE tell me, I haven't owned anything but my truck for the past 7 years, so I am kind of lost in buying a new car.

Thanks,

Jason


TrunkMonkey
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Turbo_Nismo_EC wrote:....I guess my search skills aren't that good yet.
i guess not.

i was able to find answers to all of your questions except the OBD stuff. i know nothing about this, so maybe someone else will be nice enough to respond.

if not, contact JWT and ask them.

-demetrius

TrunkMonkey
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i'm curious as to why you would abandon the H-body turbo project. everyone and their mama has a turbocharged 240.

-demetrius

bedbull
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i have a ka24de in my hardbody

Turbo_Nismo_EC
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Yeah, the ODB-I and ODB-II thing was what I was really asking, I just threw in that other stuff in at the last minute. I talked to Ben at JWT a while back and he said that they couldn't modify the H-Body ODB-II ECU, but I was assuming that was also for the 240sx...am I mistaken? The main reason I was asking you guys is because I would rather hear what the people who actually do it say, not a salesperson.

As for the reason I am abandoning my turbo H-Body project..........well..........I am just tired of my truck. I've had it for 7 years, and with the turbo I was taking a completely different route from what was origionally planned for the truck. It's had full air-ride for about 5 years now and when I started thinking of removing the airbags in favor of the torsion bars up front and coil-overs in the rear(the rear is 4-linked), I thought it was time to try something new. I am not going to start undoing what I worked so hard to complete in the past. I just think that my interests have changed and I am going more into the performance side. You see before my truck I had a 1968 Mustang fasback that my dad and I built that ran low 12's all day long, all motor, AND I MISS IT!!! That is the reason I wanted to turbocharge my truck. I went from over 450 hp to 134. I just want a sports car, I really don't car if everybody has it. Hell, you can go to any major show in the country and see 20 H-Bodies with the exact same mods I have on mine. That doesn't bother me. It's for ME that I do this stuff anyway, not so someone can admire me. IT just seems to me that the 240sx is what I am looking for. It's a 4-cylinder, rear drive car that I think that I can have a lot of fun with. Better than me going out and getting a Honda don't ya think? But before I go ahead and sell my truck I want to gather information so there won't be any suprises.

Thanks

Turbo_Nismo_EC
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Oh and by the way...I have never personally seen a KA24DE-T 240sx. I've seem ONE SR20DE-T 240, but that is it. So I think that me wanting to have a KA24DE-T 240 isn't all that played out.

S13Ka24e
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Turbo_Nismo_EC wrote:Yeah, the ODB-I and ODB-II thing was what I was really asking, I just threw in that other stuff in at the last minute. I talked to Ben at JWT a while back and he said that they couldn't modify the H-Body ODB-II ECU, but I was assuming that was also for the 240sx...am I mistaken? The main reason I was asking you guys is because I would rather hear what the people who actually do it say, not a salesperson.


So you want to ask us and not the salesperson who CAN'T sell you anything, if they can't get anything out of the deal then why don't you believe them?

BTW the web site says that it only does ECU retunes for 89-95 for the 240sx so I would say no OBD-ll.

Link: http://www.jimwolftechnology.com/ecurest.htm

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I am Technoman
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Man, if you want a newer s14 just buy salvage ECU OBD 1. Send it to Jimmy. Pay him and slap it in your car. Just ask Jimmy for an APP note. I believe you will need to cut a few wires nothing major.

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EZcheese15
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Um.....

a 95 240 is OBDII.

Even thought it wasn't required by law until 96 that all cars are OBDII, the 95 240sx was OBDII anyway (almost any car that was introduced in 1995 is going to be OBDII).

Also, that JWT website is completely out of date. It probably only lists through 1995 because that's the last time the page has been updated.

And also, JWT *does* make OBDII ecu's. As long as it is before 1998. In 1998, Nissan went from 16 bit to 32 bit ECU's. JWT can tune any 16 bit ecu, regardless of OBDII.

Turbo_Nismo_EC
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Ok then:slap oops...like I said I don't know much, just what I was told. I officially feel stupid now:confused: thanks anyways

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EZcheese15
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Turbo_Nismo_EC wrote:Ok then:slap oops...like I said I don't know much, just what I was told. I officially feel stupid now:confused: thanks anyways


I wasn't trying to make you feel stupid, I was just informing you :)

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95_240sx
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Hey you could cut a corner and buy my Ka24de which is completely prepped for turbo... :)

Rick


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