http://video.google.com/videoplay?do...ient=firefox-a

?

 

its not that they dont, it more of simple parts are a pain in the a$$ and the performance parts cost so much. as long as you have the pockets but find me an sr with just bolt-ons that can put down more hp and tq than a RB25?

 

Thats a pretty nice one, I still don't think it can do better than a SR20det given the same treatments

 

It doesn't take much to make a 240 quick, with just an SR20 and some bolt ons, you can make a pretty ferocious street fighter. Engine response and efficiency really shines.
Either way, nice conversion and swap. I have always been a fan of the Silvia conversions.

 

agreed i think the sr motor is probably a better way to go for most people out there but pure performance its not close. if you put up an rb25 with the same mods as a sr20 it wont be close but the sr is cheaper in all ways, easier to maintain, and keeps the 240 more balanced. sr should be the route most people take but rb is amazing!!! plus you cant beat the sound lol

 

+1 on the 240sx love. I have a 95 SE w/ S14 SR20DET, but the thing likes to spin rod bearings =) One day.. it will be alive again!!

nice build!

 

thanks and gl on ur 240!!! i dont know how much of a project this will be cuz im thinking of painting it and maybe trying to get an evo!!!

 

Let me get this straight, you are claiming that the inline 6 cylinder, SKYLINE, RB25 series motor, which can easily handle more than 500hp on STOCK INTERNALS has equal (or less) potential for power and torque than a 4 cylinder, SR20 series motor.

Plenty of RB25's???.........................

I'll give you this, a properly built SR20DET will take down a stock RB25.

Yes, the aftermarket support for the RB25 is not that great, there just aren't that many of the RB25's out there, except in Columbia SC, I guess. That doesn't mean the engine can't be built to produce major power, it just means that it will cost more.

That's the point here, we're not talking about "the same treatment" were are talking about how far it can go, how much hp and tq can the engine be made to produce. The RB25 can be built to produce more hp and tq than the SR20, hence it has more potential.

 

^word lol no one is saying the sr20 sucks and like i said before i think most people would and are going SR for the reason stated but we are talking about potential and i have a hard time seeing a SR out perform an RB(25 at that). i tried searching and the highest hp sr i could find was 600 but im not saying thats the best but im just saying i can find videos and dyno sheets all day long on rb motors with over 800+.

 

We have a turbo kit for the SR20det that recently put down 420 at 18psi on a bone stock SR, it's a fun a car to drive. The RB25 is an awesome power plant, I would rock the RB25 over the SR20. I think the V8 swap in the 240sx is the best choice =)

 

lol yeah those v8 motors are crazy is 240 or even an fd but i just hate the sound when your not at WOT. sounds like a rattle can. also 420 hp on bone stock is crazy. how is the head holding up?

 

so far so good!

 

Nope, never said the RB25 has less potential for power/torque. What I said was the SR20det have more potential, meaning it is more PRACTICAL for the average enthusiast. Don't put words in my mouth playa.

No $hit sherlock.
Trust me, between here and Charlotte, I know plenty of RB25 swaps and NONE of them have showed me any positive results. Of course any engine can be a formidable foe if you throw enough funds and knowledge into it but lets get real here, money is an issue and you can get more bang for your buck with an SR20det & its supporting mods, hands down.

Theres no replacement for displacement so I guess any motor bigger than a 4 banger has more potential than what all the Evos are doing today with their 2.0s right?
What good is potential if it can not be reached by the average car enthusiast? The SR20 has more accessibility, daily drive-ability, and it is more tuner friendly. That is why the SR20det has more potential.
I'm not arguing the fact that RB25s can make great power because it can. I'm just saying the SR20 has more tuning potential. All in all, the RB25 is not a bad swap, just not the route I would have gone. Just my .02 though.

 

I surf for parts all day, and yeah, parts come by easier and cheaper for a SR20 than RB. But given enough funds, I'll go with a RB26/25 over s13/s14 SR20 anyday.

 

The majority of imports here in Australia are Skylines and Silva's of every type (R32-R34 and s13-s15) RB20, RB25, RB26, CA18 and SR20. (Including some of the NA variants too). They are everywhere. To give you some idea of the numbers here. I am the only person where I live that owns an EVO. All other turbo Jap cars are Skylines and Silvia's, in mass numbers!

Now a stock block SR20 and stock block RB25 can handle almost identical power levels before they pop!

So neither is really better. It's all down to your personal taste and how much $$$ you want to spend.