I have $35,000 and I am interested in buying and bringing a 240sx se to 11's

ONLY for ADVANCED technical discussion about the 240sx!
Trefer84
Posts: 8
Joined: Tue Nov 30, 2004 1:32 am
Car: 1990 Ford Taurus SHO & 1989 Honda Accord Lx-i

Post

Hello everyone I have all this money in my bank account right now and I am looking to buy a new car. I dont like new cars very much and have always loved how a 1991-1993 black/black nissan 240sx se fastback looks. I think I could buy a good condition one with around 150k miles for around $3000. I would like to put a sr20det engine into it and mod the hell out of it. I cant put the skyline engine into the car due to there being no A/C and I need that to live in Goodyear Arizona when I move in 4 months. I would like for my car to hit 11-12's and be reliable at the same time. I dont care about body kits or stupid wings as I love how stock cars look. I will upgrade the rims and get a new paintjob for it, and restore the car pretty much. I would like to have the engine rebuilt, blueprinted, port and polished, and reinforced before it is put into my car. I am asking you all what parts will I need and what price range am I looking into? I would like to spend around 10k-15k.


InsanityInc
Posts: 2521
Joined: Wed Aug 18, 2004 7:43 am
Contact:

Post

hitting 11-12's isn't really a big problem if you have the money to do it right. Hitting 11-12's while being a daily driver, on the other hand...

240SXer
Posts: 1559
Joined: Thu Sep 12, 2002 10:12 am
Car: 1995 240sx SE (2jz powered)
Contact:

Post

No problem.. Get a SR, build it. Big turbo, big injectors, you'll see 11s if you're any decent driver on slicks.

I'm not sure how reliable it'll be, but i'm sure as long as you kept the boost low when you're not racing you'll be fine. Dont' expect it to last 100,000 of miles though.

User avatar
scruffy63
Posts: 967
Joined: Thu Jul 24, 2003 8:12 am
Car: my nissan 240sx

Post

well if you are going to build the engine I would suggest building a KA.this way you can keep the cost of buying the motor and shipping down.with a built ka you should be able to hit the 11 mark with moderate boost. just make sure you have lots of fuel and tuning.

240SXer
Posts: 1559
Joined: Thu Sep 12, 2002 10:12 am
Car: 1995 240sx SE (2jz powered)
Contact:

Post

I think the SR tends to be more reliable. I don't want to get into this though. But you would save building the KA.

AmIdYfReAk
Posts: 72
Joined: Fri Oct 29, 2004 1:12 pm
Car: 1990 240SX Coupe

Post

Persionally if i had that much money and i wanted a 11 second car, i would take a look into the RB series motor's a little more closly..

i love the SR and all, But trying to get a 11 second car out of a 2.0 4cyl is alot of stress and would not be a Decent Daily Driver, wile trying to Get that same Resault form a 2.0L 6Cyl ( RB20DET ) would be a little more relyable and the Torque would also help you out.

but again, this is only my thaughts on the situation..

Good luck.

User avatar
scruffy63
Posts: 967
Joined: Thu Jul 24, 2003 8:12 am
Car: my nissan 240sx

Post

hey 240SXer i'm not trying to start anything but equally built what would make the sr more reliable?

I think amidyfreak is right also. the rb20det would be a really good choice too.I'd pick that over the sr. but not over the ka. There is no replacement for displacement.

robbbby
Posts: 585
Joined: Thu Sep 26, 2002 12:41 pm

Post

I think there are guys who have hit 12's on the stock SR turbo with open differentials.

240SXer
Posts: 1559
Joined: Thu Sep 12, 2002 10:12 am
Car: 1995 240sx SE (2jz powered)
Contact:

Post

scruffy63 wrote:hey 240SXer i'm not trying to start anything but equally built what would make the sr more reliable?

I think amidyfreak is right also. the rb20det would be a really good choice too.I'd pick that over the sr. but not over the ka. There is no replacement for displacement.
Nevermind, i'm not going to get into that never-ending argument. But the RB20DET is the same size motor as the SR20DET.. Both 2 liter DOHC motors.. Maybe you're talking about the RB26DETT which yes, would be a good choice. It would be able to get you into the 11s without much of a problem while still being mainly stock (reliable)

InsanityInc
Posts: 2521
Joined: Wed Aug 18, 2004 7:43 am
Contact:

Post

AmIdYfReAk wrote:Persionally if i had that much money and i wanted a 11 second car, i would take a look into the RB series motor's a little more closly..

i love the SR and all, But trying to get a 11 second car out of a 2.0 4cyl is alot of stress and would not be a Decent Daily Driver, wile trying to Get that same Resault form a 2.0L 6Cyl ( RB20DET ) would be a little more relyable and the Torque would also help you out.

but again, this is only my thaughts on the situation..

Good luck.
Er... ># of cylinders doesn't mean more torque. It has more to do with the stroke, and generally a 6 cylinder of 2.0 displacement will have a lower stroke than a 4 cylinder of 2.0 displacement.

Looked it up, and yeah, the RB has a lower stroke:

RB20DET Bore:78mm Stroke: 69.7mmSR20DET Bore: 86mm Stroke: 86mm

The RB20 will be able to rev higher, but will have lower general torque at similar CFM. Also, some more digging reveals that the higher-boosting RB20 actually has less torque in stock form than the SR20 (SR20:203@4000, RB20:193@3200).
Modified by InsanityInc at 9:58 PM 11/30/2004

User avatar
bcar240
Posts: 1827
Joined: Thu Feb 12, 2004 3:57 pm
Car: 1993 240SX HB

Post

I plan on going with the RB25 some time in the future. I think the SR is a great motor, but some people I know will kill me if I swap in a motor with less displacement, no matter what gains it gives . I think the RB25 is a good buy, not as prohibitively expensive (not so much a problem with 35k ) as the RB26 and less fitment issues, and it can pull relatively high numbers closer to stock form then the smaller motors. I know some people think it will throw off the weight distribution, but I did some figures and by simply relocating the battery to the trunk you can have like 54/46, even better with a CF hood, etc... But I think the thing with the A/C is that it will work fine, but you have to fab your own mounts. Correct me if I am wrong though, cause I am planning to do this (I would rather keep the A/C also.)

AmIdYfReAk
Posts: 72
Joined: Fri Oct 29, 2004 1:12 pm
Car: 1990 240SX Coupe

Post

you are 100% right! i know that the number of cylenders would not dictate to the torque ban, but from what i've seen on the "tuned" Rb's they allways seem to come up on the Torque compared to the SR20det.

again, i cant explain it, your calculations are right.

btw, if he wants to put a RB26DET/T in there, it would cost a pritty penny to get the engine in and mating the RB25 transmission to make it fit is a chore.. or so ive heard.

S13ChucKAT
Posts: 500
Joined: Wed Jun 02, 2004 2:17 pm
Car: asd
Contact:

Post

just buy an 1999 vette, and slap a supercharger on it.. you will see 11's

Trefer84
Posts: 8
Joined: Tue Nov 30, 2004 1:32 am
Car: 1990 Ford Taurus SHO & 1989 Honda Accord Lx-i

Post

How much would it cost to get a rb26det(skyline engine) put into my car? I saw one with complete everything including transmission for 5k on ebay. The skyline engine has no problem with 700 hp on stock internals from what I have heard so I wont really have to mess with the inside of the engine. That sounds good to me.

User avatar
nismofly
Posts: 12505
Joined: Sat Sep 04, 2004 3:16 pm
Car: 89 Nissan 240SX Hatch

Post

to keep the twin turbos its hard, off the top of my head the only one i know is chris riggs'. you can do an rb25 fairly easily. i dont know much about the 26, how it would go in with a single turbo or whatnot, but id say the 25 will get you 11s.

Trefer84
Posts: 8
Joined: Tue Nov 30, 2004 1:32 am
Car: 1990 Ford Taurus SHO & 1989 Honda Accord Lx-i

Post

rb25 has what hp numbers vs rb26? The rb25 is a 6 cylinder with a 5 or 6 speed transmission, right?

User avatar
nismofly
Posts: 12505
Joined: Sat Sep 04, 2004 3:16 pm
Car: 89 Nissan 240SX Hatch

Post

rb25 is a 5 speed, came in the gts-t rwd skylines vs. gtr awd skylines. stock the r32 and r33 rb25s have 250 hp, and the r34 engine has 280hp.

InsanityInc
Posts: 2521
Joined: Wed Aug 18, 2004 7:43 am
Contact:

Post

nismofly wrote:rb25 is a 5 speed, came in the gts-t rwd skylines vs. gtr awd skylines. stock the r32 and r33 rb25s have 250 hp, and the r34 engine has 280hp.
Not sure about the RB25, but the RB26 has "280" horsepower. It really has something like 340.

Trefer84
Posts: 8
Joined: Tue Nov 30, 2004 1:32 am
Car: 1990 Ford Taurus SHO & 1989 Honda Accord Lx-i

Post

Ok I guess i will go with the rb25 engine, does it only have 250hp or is it actually more? How much would it cost to have a shop put the engine into my car if I bought the engine for around $3500-4000?

Trefer84
Posts: 8
Joined: Tue Nov 30, 2004 1:32 am
Car: 1990 Ford Taurus SHO & 1989 Honda Accord Lx-i

Post

found an complete engine for 2150 +275 shipping

User avatar
bcar240
Posts: 1827
Joined: Thu Feb 12, 2004 3:57 pm
Car: 1993 240SX HB

Post

auto makers tend to "lose" some of the engine preformance during testing. It gives monetary advantages in some situations, like exporting and importing fees and the like. That explains the RB26, which is a lot more powerful than the numbers let on. I can only assume the RB25 is the same. And the stock boost can be bumped up with little or no mods.

User avatar
nismofly
Posts: 12505
Joined: Sat Sep 04, 2004 3:16 pm
Car: 89 Nissan 240SX Hatch

Post

rb26 supposedly came stock with 315hp. lol...

which model rb25 did you find, if it was 99-up then it would have (again nissan factory spec) 277hp. if anywhere 98 and below then it had 247 hp. but like bcar240 said these engines like tuning very much, ive seen a few people on here that have rb25s running up to around 500rwhp, in a fairly frequently driven car.

InsanityInc
Posts: 2521
Joined: Wed Aug 18, 2004 7:43 am
Contact:

Post

bcar240 wrote:auto makers tend to "lose" some of the engine preformance during testing. It gives monetary advantages in some situations, like exporting and importing fees and the like. That explains the RB26, which is a lot more powerful than the numbers let on. I can only assume the RB25 is the same. And the stock boost can be bumped up with little or no mods.
It also has to do with the "gentleman's agreement", for Japanese cars anyway.

User avatar
Gold Digger
Posts: 5823
Joined: Sun Apr 11, 2004 8:48 pm
Car: Current:
2011 Infiniti G25X

Former:
1995 Nissan Skyline GT-R V-Spec Midnight Purple
1990 Nissan Laurel Club S Turbo Two Tone Pearl

Post

Trefer84 wrote:rb25 has what hp numbers vs rb26? The rb25 is a 6 cylinder with a 5 or 6 speed transmission, right?
They are all 5 speeds as far as I know. I am not too sure on the R34 GT-R though, so don't quote me on that. R32 and R33 were all 5 speeds.

RB25DET found only in R33 Skyline GTS25-t's, R34 25GT-t and C34-C35 Laurel Medalist turbos, and Club S Turbos.

Rated at between 247-265PS depending on the year and model...i.e. Neo 6 RB25DET.

RB26DETT found only in GT-R's or others where people have done crazy swaps. Rated at 280ps, but depending on model year of GT-R, varies slightly. R32 ratings are between 280-295ps, R33 ratings are between 290-310ps and also depends on if it is Vspec model or not. R34, not too sure at the moment, but have heard the normal GT-R is pushing between 310-330 and the VspecII is somewhere in the neighborhood of 340ps.
nismofly wrote:rb25 is a 5 speed, came in the gts-t rwd skylines vs. gtr awd skylines. stock the r32 and r33 rb25s have 250 hp, and the r34 engine has 280hp.
R32 skylines did not get a DET in the RB25 platform. They had a GTS25 but it was an N/A motor. They didn't get turbos till the R33 chassis.
InsanityInc wrote:
It also has to do with the "gentleman's agreement", for Japanese cars anyway.
That's correct. It's more like for a selling point. Which car would you buy that had generally the same specs, but one car had 20 extra hp...that's what that agreement was based on.

User avatar
nismofly
Posts: 12505
Joined: Sat Sep 04, 2004 3:16 pm
Car: 89 Nissan 240SX Hatch

Post

C33LaurelRacer wrote:R32 skylines did not get a DET in the RB25 platform. They had a GTS25 but it was an N/A motor. They didn't get turbos till the R33 chassis.
ah yah i read the info wrong, what was the N/A engine rated at? and where did the rb20 come into play with the r32 and cefiro?

User avatar
nismofly
Posts: 12505
Joined: Sat Sep 04, 2004 3:16 pm
Car: 89 Nissan 240SX Hatch

Post

o wait i got it the rb20det was the engine for the turbo r32 gts

i hope i got it right now...still researching rb's.

RMiller
Posts: 872
Joined: Wed Dec 24, 2003 8:50 am
Car: BBQing

Post

Any motor can get you to 11's with 15k. The a/c isn't anything that can't be made to work. All you do is keep the 240sx a/c compressor attached to the lines, then make a bracket that places it so the pulley lines up correctly. If you can't do it it'll probably cost you a hundred bucks or more to have a shop do it.

sr20det gets my vote, however. a/c from 91+ bolts up. A turbo upgrade and the usual stuff would be easy stuff. Just check the compression first. Then bolt on NEW stuff, tell an ecu tuner what you have and slap the chip in and it'll work out nicely. New stuff is good. Especially new motors.

Actually, if you haven't dealt with engine stuff before, I recommend swapping in a stock sr to get it running properly, then upgrading.

Trefer84
Posts: 8
Joined: Tue Nov 30, 2004 1:32 am
Car: 1990 Ford Taurus SHO & 1989 Honda Accord Lx-i

Post

I have done some research and have had a very hard time finding a 240sx black/black that is in good condition. I bought a 1993 Honda Prelude Si 4ws that has the jdm h22a1 swap(200hp 161tq) already installed with nothing else added for $6500 dollars. I might buy a 240sx in the future, but this car is 0-60 in 6.6 seconds stock and is in perfect condition. Only real draw back is the car is front wheel drive.

NiSmo240luvR
Posts: 219
Joined: Thu Nov 13, 2003 6:47 am

Post

Trefer84 wrote:I have done some research and have had a very hard time finding a 240sx black/black that is in good condition. I bought a 1993 Honda Prelude Si 4ws that has the jdm h22a1 swap(200hp 161tq) already installed with nothing else added for $6500 dollars. I might buy a 240sx in the future, but this car is 0-60 in 6.6 seconds stock and is in perfect condition. Only real draw back is the car is front wheel drive.
not to bad, but for what u were looking for, that sucks....

also, i thought the whole 280hp thing was because in japan their used to be a law where the maximum hp was 280? i remember reading that about skylines somewhere...and they also mentioned that power upgrades were so easy you could kick the muffler and gain 10hp....haha awesome....

User avatar
nismofly
Posts: 12505
Joined: Sat Sep 04, 2004 3:16 pm
Car: 89 Nissan 240SX Hatch

Post

actually it was 280ps, which is 276hp, but ya thats the right idea.


Return to “240SX Technical Forum”