240sxgod

Ok guys, here's the low down. Our shop is getting ready to build up a 91 coupe for street/strip duty to whip on some hondas. So i'm new to the board and I thought i'd get your opinions. This is what we got. 1991 240sx...KA24DE engine...5 speed trans...33,000 original miles. Mods we are thinking of adding include..

underdrive crank pulley
Hot Shot header
OBX shifter
ZEX nitrous kit.. May go with NOS
Cold Air Kit
custom 2 1/4" exhaust

Cams?? Not sure.

Let's hear your opinions!!!

240sxgod

The plan is to run in the 13's. chassis mods will include...
Extreme lighting
skinnies on the front
Hoosier Quick Time Pros 26x8.5x15
spool in rear

I'm with Stupid

I doubt you'll be whipping many hondas with just a few bolt-ons and nitrous.

240sxgod

....I live in Ohio!!!

I'm with Stupid

...no man's land...

NightXCZ77

RB25DET engine, few tiny mods....run 11's

Night
360-672-2415

2FortyessX

you doubt you will be able to get more than 40 horses over stock without the nitrous. do a swap if you are serious or turbo the ka

SR22 powered

"[RB25DET in a 240SX and damn proud of it. You'll know who's got Skyline power and who's got SR power when I'm passin ya!"


SR FUC*ING POWER.
I don’t think you have ever looked into Japanese JGTC lately, they are think about running SR powered GTR into JGTC 500. That’s JGTC 500, not 300 - 500. So let's see they are replacing RB26s for SRs and all you got is skyline engine not GTR engine.

Now, about your RB25 powered 240, read my users name.
I don’t think you will be able to keep up with me, unless your RB25 has real big T on it.

Don’t get me wrong, I am not trying to start something with you here, I just hate when people think Bigger is always better.

JR

leiferik1

yeah

NightXCZ77

Unless you have over 500 RWHP and 4.11's in the back, good luck in beating me when it comes to a drag race. I am not trying to start something here either, I'm just saying that the RB is faster than a SR. I do have a large turbo. Just got a Turbonetics 62-1 Ball Bearing....what a beauty.

Anyways, running a SR in a GTR has a few things to do with weight. The RB weighs more than the SR. In JGTC it's all about the weight and power you've got. The GTR is a damn heavy car. The RB26DETT is about 300-400 pounds heavier than the SR due to twin turbos, engine size, front differential assembly, and AWD transmission. To lessen the car 300-400 pounds is an excellent idea, especially when you have thousands upon thousands to put into a SR to make it run 500HP all day long. I am going to guess that the whole body of the GTR has also been hollowed out so there is basically nothing but the driver and a roll cage with a few gauges. Like I said, it's mostly about weight that they use the SR....hell, why not go CA and save an extra 50-80 pounds?

On the flip side, you take the RB engine - designed for a car about 1000 pounds heavier than the 240SX and you drop it into this car. Now, the RB25 is not near as much as a weight difference as the 26 which is one of the reasons that it is a preferred swap. You're looking about 100 pounds of difference with a SR over RB25, and you're looking at about 75 more stock ponies to push ya as well as stronger internals. While the SR is a good engine, I think that the RB25 is a better alternative if you want a good amount of power.

I have a SR powered 240 as well as a RB25 powered 240, so I know the difference between the two, but my bias still falls on the RB.

Night

SR22 powered

http://www.amkread.co.jp/Pages/Event...lJapan_top.htm

Look at the web site above and compare the SR 1/4 mile time to RB25 time. Also look at how many SR are running 10s and 11s and how many RB25 are doing the same. Then we will talk about weather SR is better at 1/4 mile or is it RB25. Not only drag, but also SR is choice of racers when it comes to road racing, drifting, and JGTC.

Yes you are write, they are thinking about replacing RBs with SR because of fact that SRs are much lighter. But there has to another good reason for it, otherwise why would they give up the all mighty GTR AWD system. Think about it.

I don’t think I am pushing 500 RWHP but I am very close and I am sure neither are you, at least not with that T62-1 turbine, you might be able to do it with T68-1.

If RB25 is such a good engine then how come there are only handful of products available for it.

I am sure you like your RB25 better than your SR20, but see you’ve got SR20 not 22. There very big difference my friend.

One more thing, I would love to see you car run 11s.

JR

kaos

Just to let you know he will be running 11s. But back to the topic at hand. You really want be beating on many Honda's with that. I have a SI right now that is pretty much stock that would either beat you or give you a run for your money. Just so you know I do not consider it fast. Highway the stock 240 is faster by a lot but come down to the 1/4 you need more work than that. But I would assume you mean 1/4 because not too many people go with NOS or ZEX for highway speeds. Now you put a B18 or even a B16 into a hatch and your car won't come close to it.

Chad

NightXCZ77

They got rid of the almighty RB26 just for weight issues. The AWD tranny helps when cornering etc, but I've seen RWD Rx7's beat GT-R's in JGTC and they are rear. No matter which platform you go with, it's all driver.

I am running over 500 HP actually. The T62-1 supports 27 psi effectively and can boost an engine my size up to 600 hp without any problems. It is a great turbo. T68 is a bit too laggy for me.

By the way, I ran a 12.6 with intake, 2.5" downpipe, 2.5" exhaust, and plugs.

Since then I have done the following:

Equal length turbo manifold
62-1 Ball Bearing Turbo
3" exhaust
3" downpipe
3" test pipe
High Flow Fuel Rail
880 CC injectors
AVC-R
FMIC
Port and Polish head job
RB26 Forged Pistons
Shot peened rods
Knifed and balanced crank
Apexi Power FC
GTR Intake Manifold

It is very easy for me to break 11's.

Night

SR22 powered

Guy, No you have not seen FD3S beating GTR in JGTC, because FDs compete in 300 not 500. So there is no way 300 HP car can take on 500hp car in JGTC. And like I said they did not get rid of it they are thinking about it.

I have to say your car is nicely modified, its nice to know that someone is doing something different and I hope your are write about running 500whp. The reason I am so sure your are not running 500whp is because friend of mine runs they same turbo on his 2JZ and he dynod at 463 WHP @ 24 psi. His car is modified quite a bit as well.

I ran 12.4 @115 mph with HKS GT2540 turbo, that's a complete bolt on turbo and with stock internals. Since than I have changed everything. Give me your email address if you like to see what I have done to my engine.

I still like to see your car run 11s because, I think its not that easy. I am not all about drag TOP speed and road course is my sport.


JR

altima/240sx

cat fight