Don't do an RB. If you do anything do an SR. It will cost you alot of money to get your RB where you want it to be, I know where you and Jeff want to be with your cars and its going to cost ALOT of money.
If you do choose RB's you know where I live and you know I know more about them than pretty much everyone on this site.
No Homo.
This is not exactly true. The RB can be made to make decent power pretty easy and parts are fairly easy to come by as well. The SR in my opinion is a very inferior motor to the RB25 which can be had for a little less than the SR motor set. By the time you add the drive shaft and mounts and install you are looking at a car that is 40BHp more torque and is faster for around the same price as a SR swap. We put a RB in to our Sileighty which is from Japan and it pulled harder and it is faster stock than a friends S-14 with a FMIC Boost controller exhaust BOV and a few other minor upgrades the 180 will pull on that car all day long. and the only aftermarket part on the motor is a HKS SSQV. The SR swap is the fanboy thing to do hell in our JDM car we are swaping out for diffrent motors.Originally Posted by MeanGreen
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you want my honest opinion..well..FUCK RB20/25/26...fuck SR's...
RB30 all the way...6G72 all the way...2JZGTE...all the way...
RB25 is a weak motor, its worse than the RB20..RB25 will never be what the Rb20 or 25 was...its a piece of shit...my bone stock RB 20 I had beat an RB25 car. Then my friend beat a RB26 power 240sx and him and I are just as fast as one another. My opinion...best bang for your buck is not an RB at all...
6G72 or 2JZ
No Homo.
Best bang for your buck is not an RB in most situations, but I wouldn't take any motor over my RB26. Yes 2JZ is cheaper, but thats the only advantage it has. And they don't have the powerband an RB26 has. A stock RB26 redlines over 1000 rpm higher, and can go quite higher with small amounts of work. Which is really nice when you slap a big single on it.
An RB25 is MUCH stronger than an RB20, and the RB26 is on another level. You may have outran an RB25, but that doesn't really mean anything. Hell, I outran a vette in a civic once.
I say RB25 if you're on a budget, or go all they way with the 26. You can easily put down 300+ with no issues on the stock 25 and without spending much money.
And if you are willing to crossbreed, don't bother with anything other than an LS1, its the only one worth crossbreeding IMO. Reliable 400+ HP and 25+ mpg. That is if you can get over the sound.
Oh, and an RB30 block is quite a bit taller than the other RB's and won't fit in a 240 unless don't mind running a hole on your hood or a big ole mullet hood scoop.
Last edited by RB26powered; 02-06-2007 at 01:58 AM.
You know how many times I have heard that before?..LOL..I can make an RB30 fit with no problems. Shit I helped make a VH45DETT with a 5 speed fit into a 300zx...it runs and drives today..and everyday...for the past 2 years....yes...we did have to cut the hood on that but everyone said it could not be done. The RB30 isnt but about an inch taller than the RB20 if the RB25DE head is used.Best bang for your buck is not an RB in most situations, but I wouldn't take any motor over my RB26. Yes 2JZ is cheaper, but thats the only advantage it has. And they don't have the powerband an RB26 has. A stock RB26 redlines over 1000 rpm higher, and can go quite higher with small amounts of work. Which is really nice when you slap a big single on it. On moch up, with a set of certian mounts all you have to do is trim a little off the hood reinforcement, thats it..other than that the RB30 looks like an everyday RB25.
An RB25 is MUCH stronger than an RB20, and the RB26 is on another level. You may have outran an RB25, but that doesn't really mean anything. Hell, I outran a vette in a civic once.
I say RB25 if you're on a budget, or go all they way with the 26. You can easily put down 300+ with no issues on the stock 25 and without spending much money.
And if you are willing to crossbreed, don't bother with anything other than an LS1, its the only one worth crossbreeding IMO. Reliable 400+ HP and 25+ mpg. That is if you can get over the sound.
Oh, and an RB30 block is quite a bit taller than the other RB's and won't fit in a 240 unless don't mind running a hole on your hood or a big ole mullet hood scoop.
Im not going to talk to much shit about it but I know if I put 5g's into 6g72 or an rb26...with the RB26 being in a 240sx chassis...the 6g72 will destroy the the RB26.
RB period in a 240sx is not smart...to do it right and get correct power you need ALOT of money..thing about..one KEY factor is its a front sump engine in the 240sx...you need a custom pan...thats 1200+/- right there. Mount kits, wiring, etc..etc..etc..SR is cheaper and its faster in a 240sx.
No Homo.
.
I believe thats exactly what I said, you'd have to cut the hood. And to be exact, the RB30 block is 44mm taller than the 25 or 26 block.
We can internet race all night long. Im sure thats possible, and so is the opposite. It depends on quite a bit. Parts for a 6G72 are typically more expensive and theres not really a big following for them. And you have to be joking about a 6G72 destroying an RB26 240. 1000 lbs less weight AND more power potential.Im not going to talk to much shit about it but I know if I put 5g's into 6g72 or an rb26...with the RB26 being in a 240sx chassis...the 6g72 will destroy the the RB26.
What does your 6g72 put down? I have less than $5k in my RB26 build.
See now I'm starting to think you don't know anything about RB's or swapping them in a 240. You're way off.RB period in a 240sx is not smart...to do it right and get correct power you need ALOT of money..thing about..one KEY factor is its a front sump engine in the 240sx...you need a custom pan...thats 1200+/- right there. Mount kits, wiring, etc..etc..etc..
1. Show me one person that spent $1200 on the oil pan. Mine cost $120 shipped BRAND NEW. And you only need that on the 26 swap.
2. To do it right and get "correct power" doesn't require any more than any other engine would, especially an SR. This is not the 90's, RB parts are not hard to get anymore.
3. Driveshaft and IC piping is the ONLY things you have to have custom. You can mount an RB in a 240 with STOCK parts.
4. Wiring is an issue with any swap
As I said before, RB is not always the best bang for the buck. Yes an RB25 swap is a little more than an SR, but it has more potential. Stock for stock the RB25 would kill the SR.SR is cheaper and its faster in a 240sx.
To say that an SR is faster in a 240 is just rediculous.Yes you can make one faster than a mild RB, but at the cost of reliability. The RB has more displacement, flows better, more valve area, has a MUCH stronger bottom end, more potential, etc. The only advantage the SR has is weight. The 26 is essentially Nissans race engine. It is capable of 400+ just by tweaking it in stock trim. Theres plenty of RB26's running around the US pushing 600+ on stock bottoms with ne issues. There was a GTR that dragged in aussie land that put down 1800 HP on the stock bottom. You may do 1/3 of that on a stock bottom SR.
Last edited by RB26powered; 02-06-2007 at 03:31 AM.
Non-N1 bottom end RB26 cant handle more than 550 and be reliable. RB20 bottom end cant handle more than 380 and be reliable. Rb25 is just a POS..I have yet to see one run for a solid year of what I put my old RB20 through..
I believe thats exactly what I said, you'd have to cut the hood. And to be exact, the RB30 block is 44mm taller than the 25 or 26 block.
Yes, right at 2 inchs...I can make it fit without cutting the hood.
We can internet race all night long. Im sure thats possible, and so is the opposite. It depends on quite a bit. Parts for a 6G72 are typically more expensive and theres not really a big following for them. And you have to be joking about a 6G72 destroying an RB26 240. 1000 lbs less weight AND more power potential.
What does your 6g72 put down? I have less than $5k in my RB26 build.
it puts down 320 stock, I turned the boost up to 14psi from 7psi. I put about 5k into it and I have 600~650 awhp. Its not about how heavy or light the cars are. Its how you get that power to the ground and keep it there. Just look at a Ferrari, some of them weigh 3800pounds but they sure as fuck will haul ass. Shit the Bently GT weighs about 4200 if I am not mistaken and its fast as fuck.
See now I'm starting to think you don't know anything about RB's or swapping them in a 240. You're way off.
Think what you want, I have been working on RB's for almost 5 years now. I worked on more RB cars than you have ever seen...worked on more Sr cars than you have ever seen. I DO NOT like RB's in 240sx I dont mind RB20's in 240sx because its not too much for the chassis although it does weigh alot and makes it nose heavy. Now...RB26 in a Skyline is fun because you have AWD..
1. Show me one person that spent $1200 on the oil pan. Mine cost $120 shipped BRAND NEW. And you only need that on the 26 swap.
Since when has a CUSTOM oil pan cost 120? maybe a stock pan...but not a custom pan which is what I am refering too.
2. To do it right and get "correct power" doesn't require any more than any other engine would, especially an SR. This is not the 90's, RB parts are not hard to get anymore.
get it right...
RB20 will require at least 3000 to get the right power reliably.
RB25 will be ok for a while but its a POS engine to begin with.
RB26 is a great motor, dont get me wrong, but in a 240sx it is TOO MUCH without AWD...my AWD would destroy your RB26 car on a track, I have raced RB's they are nose heavy and have oversteer like a mofo...you are either going to burn up your breaks or burn up your tires and your suspension is going to get a hell of a workout as long as you dont speed shift the transmission and blow a syncro.
3. Driveshaft and IC piping is the ONLY things you have to have custom. You can mount an RB in a 240 with STOCK parts.
You are wrong again. You can use a stock driveshaft on RB20. You can use stock intercooler piping on all of them. You NEED mounts or a crossmember. Down pipes for all of them.
4. Wiring is an issue with any swap
Not to me it isnt.
As I said before, RB is not always the best bang for the buck. Yes an RB25 swap is a little more than an SR, but it has more potential. Stock for stock the RB25 would kill the SR.
To say that an SR is faster in a 240 is just rediculous.Yes you can make one faster than a mild RB, but at the cost of reliability. The RB has more displacement, flows better, more valve area, has a MUCH stronger bottom end, more potential, etc. The only advantage the SR has is weight. The 26 is essentially Nissans race engine. It is capable of 400+ just by tweaking it in stock trim. Theres plenty of RB26's running around the US pushing 600+ on stock bottoms with ne issues. There was a GTR that dragged in aussie land that put down 1800 HP on the stock bottom. You may do 1/3 of that on a stock bottom SR.
Was it you who raced Ch@dbee with the RB26 powered 240sx and lost??
No Homo.
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