putting an rb26 motor in a 93 240sx

is puting a rb26 motor hard to put in or just like a sr20 i want a motor i can have more potential out of and i need some advice

I know it's alot harder, but I'm not sure what the full process is.

Alot of money, Alot of time, and a hell of alot of know how

yes its difficult..do your research...duh

it is far from "just like an sr20"

If I had to take a wild guess and make up some numbers on the possible engine choices actually done on american 240s it'd be something like:


SR20 > KA-T > CA18 > RB25 > some other random motor > RB26.

sounds about right.

You can get plenty of power out of the KA or SR.

you need an rb25det transmission, custom driveshaft, the actual rb26dett, crossmember to fit it, mounts, harness, plumbing etc... its a bitch

If I had to take a wild guess and make up some numbers on the possible engine choices actually done on american 240s it'd be something like:


SR20 > KA-T > CA18 > RB25 > some other random motor > RB26.

sounds about right.


i would say sr20, ka-t, rb25, (ca and v8 are a tie), some other random engine, then rb26. rb25 is definantly alot more common now a days.


To the thread starter:

1) Just because your asking this question you are already in over your head.

2) The fact that you said is it the same as putting in an sr20, lets us further know you are in over your head

3) I hope you have ATLEAST 10 grand to spend on a STOCK 2.6 liter 250 hp engine.....then you said you want more potential lol. First experience even 400hp in a S chassis before you try and go for what 1 thousand(i dont see why you need more potential)?? the sr can get up to 5-600 for about what you would be spending for a stock 26. The 26 is a pointless swap except for the "i have money and my engine isnt played out yet factor"

4) An rb25 is about 5-6 grand and will be alot more easy to install and has the same potential.....and you know your going to make the 26 single turbo anyways.

5) The sr20 will be more than enough most likely for you.

6) The rb will have more potential but you dont have the money to even reach that potential.

7) if your a rich SOB, then go to a shop tell them i want an rb26 in this car and 1000hp and prove us all wrong.

8) until then the closest to driving a 1000 hp rb26 is in the gran turismo series spinning in your PS2.

and if you even ask about the AWD......

research first.

www.mckinneymotorsports.com
www.jspec.com

i second all of that ^^^

Stallowned!!!!

Its kinda like this, if you have the money to successfully swap aRB26 into a Fourty and put down lets say, around 450hp, then why in the fuck are driving a Fourty in the first place? For that money you oughta be looking at some other cars with more punch out of the box.

RB25 and RB26 don't have the same potential, the RB26 is like 310hp stock if you take out the governers and a 600hp SR will be more then a stock RB26.

so whats a good motor that can build a 450+hp and torque cause im going to build one from scratch like buy the body and build the engine piece by piece right now i have a gen 1 lightning with 450+hp thinking about trading for a 240sx if someone would but im not sure on gettign rid of my baby give me some info on some engines and money for these 240sx cause i really want to build one thanks

KA turbo

www.ka-t.org

lightnings are pieces (no offense) all there good for is towing stuff (and not that good at that either) i raced 2 of them at my local track, and one had a 10lb pulley on the S/C, and he beat me by .01 of a second (i was sleeping at the light, otherwise i would have had him) at this time my car didnt have the kaaz, or some of my other newer mods.

yes there is a 700+ hp lightning around here...thats off the spray mind you. And he got pwnd by a 400rwhp mr-2. There too big and bulky. Not saying they cant be fast as fuck, but you have to get your priorities straight. If you can afford both well then keep the truck. It sounds like you like it alot.

what i ment by the same potential of the 25-26 is that for a street tune 7-800 hp is a ok amount to reach with either. Not saying he was going to make an all out tube chassis drag car.....

26 swaps are fun, we just finsihed one at our shop, twin HKS 2530's, Twin Z32 Maf's, Monster FMIC, using a modified 26 tranny, into a stripped S13, it's a beast. 26's are big motors, and a very tight fit, especially if you want to retain the twins, and even more of a pain if you have upgraded turbos, the downpipe is no fun. The 26 with the modded 26 tranny is a tighter fit than using the 25 tranny, so I don't reccomend it unless you can't find a 25 tranny. Other than that, it's just like any other swap, just depends on how much you want to put into it, and what you want.

http://ga240sx.com/forums/viewtopic.php?t=891

Theres the link to alot of the pics from our install, not completely finished, still needs a little tidying up.

E

how much power do you think its making?

how did you get the AWD RB26 tranny to work in the 240? Or is that the 'modified' part?

hey probably has a custom driveshaft and a welded or removed front diff

The Front output was cut off the tranny, and weldded, and a custom driveshaft was needed. Haven't gotten to the dyno yet, but we're hoping for 500.

E

Nice work driftjunke, BTW Welcome to AF

-Matt

Its cool that you used the rb26 transmission but I was woundering what the preformance benefits are of it? I mean I thought that it was just too much work to be worth it. Could someone enlighten me on the differences between the rb25 and rb26 transmissions? thanx.

5-speed vs 6-speed.....

the rb26 one is a getrag i dunno bout the rb25 one

From our understanding the 26 is the same as the 25, just bulkier. I would use a 25 tranny, the 26 isn't worth the trouble, and its a tight fit.

E

GT-R tranny is only 6-speed in the R34.