reaction to rb25 into rx7

[mikey8108]

just wondering everyones opinion of puting a rb25 into a fc i just picked up and making it to compete in road racing, and just to have fun in.

[Nick240sx]

..............rotary...............to non rotary..................what?

wait would an rb even fit in an fc??

[Joe]

it would be a really tight squeeze i dont think the engine bay is long enough

look into a LS1 rx7. those things are ****ing MONSTERS.

ive thought about selling my rb to do a ls1 in the s14 several times...

[NightKids2]

The LS1 is the way to go. For the money Ive put into my swap I could have built an FC that gets 30 mpg and is faster than a Corvette. And have money left over.

[USMCgetsome]

man if you could stick the rb25 into an fc i'd even help out with the project. I love that idea. The fc was my 1st car. Had descent power but not as powerfull as an fd. I have known people that have done the ls1 swap and man that thing pulls and leaves people like they are standing. Seems like a great idea but lots of work. I like the vision. The COSMOS 20B engine is probably the way to go though.

[TheOne]

you'd have to find out if it'll fit, the 13b and the LS1 are quite shorter than the RB.

i'd get a LS1 and slap it in there, or in a 240sx:).

[krayton]

dooooooo it.

if your up for the challenge, i think you could make it happen.

..cut a lil firewall...

but i recall that FD with the 2jz, but not sure if the FDs have more room

but as everyone is saying, +1 to ls1 in all chasis

[mugengsr]

why ??? slap an ls1 into an rx-7 or even a 240sx thats just moraly wrong !! lol .. why not just give in and buy a firebird or some other POS if you want the ls1

[kamikazi]

i think it could be done, he** i havnt seen that done yet i mean everyone has seen the cosmos and the ls1 put in them lets see something diff.

[lucky7]

why ??? slap an ls1 into an rx-7 or even a 240sx thats just moraly wrong !! lol .. why not just give in and buy a firebird or some other POS if you want the ls1

SLO_240sx on this site. havnt seen him post in a while. anyhow, he had a RB25 S13 with like 7k miles on the motor. he only had it up and running a few months.. he sold it. this is what he's in the middle of now.

[blk90s13]

SLO_240sx on this site. havnt seen him post in a while. anyhow, he had a RB25 S13 with like 7k miles on the motor. he only had it up and running a few months.. he sold it. this is what he's in the middle of now.

thats what i want in my S14 but i want a carb 350 SCREW FI

[Joe]

LOL you say that now.

ls1 > carburetor.

[BoostFab]

check out this LS1 over at drifting.com:

drift session ....niiiiice... ///click here for video///

http://www.drifting.com/forums...pp=15

[wawazat8402]

Have you looked into what classes you would be able to compete in? I assume if you are building a car to compete in you would want to compete in NASA or SCCA. A swap can really limit which classes you are allowed into. As far as a swap, I agree with most of the others on here. The LS1 swap is a beast if you dont want to mess with the hassle of the rotary. However, IMO, as much as I love the sound of an I6, nothing sounds like a modified rotary.

[NISMO_RB25]

i have a FC TII and a S13/RB25DET. It would be some serious work just do to the size of the RB transmission. The FC transmission is pretty small and you would either need to sit the engine really low or cut out the tunnel and rebuild it. I think the engine would probably fit but it is going to sit so far forward that you will lose some of the handling .

If I blow the FC up I will probably go the SR route instead. Cheap, lots of aftermarket support, will fit far back in the engine bay. I know "SR" is a four letter word in the RB section, but I have seen the SR in a FC and it fits great and gives you plenty of room.

Good luck with your project.

One final thought. An N/A ported 3 rotor will get you almost 300hp and will be very reliable.

[240sxHitman]

it could possibly work, if seen a 2jz Rx7

[ka-t_2_be]

I don't know Mike.... are you willing to do some custom work??? I say do it. It would be much easier than the other idea. And this would be a better all around car than the other idea as well. Ill help.

[mikey8108]

sweet i love the support everyone saying they would help! but yeah i like doing costom work exept for the time it takes but my reasons for the project is right now i have a civic hatch with a h22a swap i know you guys probly dont like hondas but its a fun car big engine+small car = also i just picked up the rx7 from some guys field. i have a buddy who is going to japan next week and going to bring me back a rb25 front clip for 1800 so pretty good price. at first i wanted to be crazy and put the rb in the civic hatch and make it rear wheel drive. think of the reaction you would get in that thing but i got the rx7 and i know it would be alot eisier to put the rb in that. thats why iam were iam now with wanting to put it in the rx7. i like stuff that is different and dont mind cutting things up to make it fit. what kind of times do you think a rb25 rx7 would run at the 1/4 mile? also good point about the class regulations in road racing what class would that put me into wait better yet any one have a link for that stuff. how much could some one pick up a ls1 and t56 for or a ls1 with a five speed?

[wawazat8402]

http://www.nasaracing.net

http://www.scca.org

[TheOne]

why ??? slap an ls1 into an rx-7 or even a 240sx thats just moraly wrong !! lol .. why not just give in and buy a firebird or some other POS if you want the ls1

because first the LS1 would be a LOT more reliable than the RB25 or the rotary, 2nd you can get over 400rwhp n/a, 3rd you can get better gas mileage with it than either other(esp the rotary). 4th its been done on either so it wouldn't be so hard to do, 5th the LS1 + T-56 weights less than an RB25 + trans, need i say more?, there's a huge aftermarket for it too, oh and it'd be better in a 240sx/fc than in firebirds and camaros and the others because.........weight.

anywayz yer the 1 with the $$ Mike, do what you want:)

[Joe]

why ??? slap an ls1 into an rx-7 or even a 240sx thats just moraly wrong !! lol .. why not just give in and buy a firebird or some other POS if you want the ls1

please, morally wrong...ITS JUST A ****ING CAR

people like you would be the reason i would do a LS1 240sx. just to piss off..

if you cant see the point of a LS1 240sx you are blind.

[krayton]

please, morally wrong...ITS JUST A ****ING CAR

people like you would be the reason i would do a LS1 240sx. just to piss off..

if you cant see the point of a LS1 240sx you are blind.

no your blind!

next youll be wanting to swap a 4age into your car.

[Joe]

bro im gonna ban you from this forum

KAT = fail

[themadscientist]

anything is possible with enough money and skill. I love the gurus who seem to attribute some moral code to machines. Seriously, get a life.

[Nick240sx]

DOooooooooooooooooooo iiiiiiiiiiiiiiiiiiiiiittttttttttttt

[mugengsr]

ls1 you say 400hp ....

i say rb26 with 15lbs 450 -500 hp : )

anyways to each their own .. im not a fan of chev 350s i have worked with them for years and i dont like them ... i like the high rev and absolute sex sound of an rb : ) my fave of all engines i have worked with and easy to get gobs of power out of ...

[Nick240sx]

ls1 400 WITHOUT a turbonow take the longevity of your rb25 on 15lbs versus your 400 without boost, you should also take practicallity here

[mugengsr]

the rb engines are some of the most reliable engines when it comes to boosted engines .. so longevity is not really an issue

[Joe]

bull**** it isnt an issue

high horsepower reliability is ALWAYS an issue on any car, even with the best tune you can you can blow up very quickly in the wrong situation.

and yea that 400 hp on a ls1 is N/A wich is still a very conservative build (heads, cam, um. thats it. actually build the engine and it gets even more)

and while a RB sounds good, it will NEVER match the sound of a lopey idle and blower on a small block.

[wawazat8402]

and while a RB sounds good, it will NEVER match the sound of a lopey idle and blower on a small block.

I concur.