I agree...and I totally respect Taylors and Mattbacks view of this particular choice of motor...mainly because they have experience with the swap. But I have also read that by adding a decent suspension (which most would do anyhows)that the way the motor sits and looks or whatnot isnt a factor...as far as handling, I would agree with you as well Venom...but only because in theory, if the 100lbs was the biggest difference, I would also relocate the battery to the rear(for weight and room reasons)and I planned to added a CF hood with my setup anyhow(holy run on sentence batman) But why does it handle like shit...because of soley the weight...or because of using a stock suspension?. I do plan to keep my a/c which I know would make a huge difference as far as weight reduction to make up for the in-balance(sp). I also do not want a drift car, mainly a street driven drag car. There is a growign support for RB's as there was a while ago when nobody did the SR swap...know its the hottest thing since sliced bread and there's parts/support everywhere you look. As far as the replacement parts go Taylor, I would have to totally agree with you on that one..but on the same note, more places are starting to carry factory oem parts such as Phase2, After-Dark Tuning, and I've even read on NICO and Fresh Alloy, that soon the US dealers will be carring factory Nismo parts....but when, how much, and for what models I do not know. I would however try my best to replace all of the nessacary parts before the swap, as you should do with most imported motors, so I wouldnt have the majority of common problems associated with maintaing such a motor...IF I decided to go that route. Thanks everyone so far for their input, and keep um coming..I think this thread could help answer alot of questions for people.

 

alright first off.

this is mattback and i'm going to say.

IF you just mentioned after-dark tuning, then you need to completely drop the entire idea of thinking you know where and how easy it is to get parts for an RB motor. First off, phase 2 may say that they have it in stock, but many times it has to come from japan anyways. "In stock" just makes you press the 'order' button on the website, it doesn't necessarrily mean that it's there. I've gone through this a few times with them. No harm done, you just have to wait longer than expected. I ended up going elsewhere for my suspension parts because of it.
AFTERDARK ARE FRAUDS. There is a huge fraud and conspiracy associated with it.
NICO is not the place to be for intelligence regarding 240sx. There is no other way of saying that.
Thirdly, Taylor at XAT knows about phase 2, he knows about unstable hybrids, he knows about Mckinney, and you know what?? IT STILL TAKES 5 MONTHS TO GET A PART. Just because its typed on the internet that its "in stock" doesn't mean its true.


secondly, I guess youve never driven a 240sx with an sr in it, or even a stripped out to hell ka24de with a battery in the back (like taylors car).

but then again, what do you care, you want it for a drag car.

might as well convert it to solid rear axle as well :X

ever hear of the mckinney s13 with the rb in it that tried otu for D1GP drivers search? yeah. how about
UNDA UNDA UNDA UNDA UNDA SPIN



with the sr, you really can have your cake and eat it too, but if you want to do the rb, i say go for it. you'll just be upset when you have a 240sx that doesn't handle, and still gets beaten by like 5 or 6 SR's in the area, on stock blocks

 

All the info you need is here. Read the stickys

The RB25DET head flows way better than an RB20DET head. In fact the RB25 head flows the same as the RB26 head.

The budget skyline block to get (for the money) is an RB25 and you can always go on the differen't skyline forums and come across a used set of RB26DETT pistons crank & connecting rods. They all drop into the RB25 which then intern strokes it to an RB26 block. Now you basically have the same engine minus the quad throttle bodies. All the RB26 head items fit as well.

The RB25 block is NOT the same as the RB26. The RB26 is a differen't casting and is stronger. I doubt this will effect you unless you're shooting for a 1000HP or something.

Going out and buying a Supra does not even compare to a Nissan S14 setup. They're wayy heavier and even with adding weight to the rear of a 240SX it would still be lighter. Not to mention Toyota parts are more exspensive than Nissan.

I do think the RB setup will be more exspensive in the long run 6x parts compared to 4x. Esp for a rebuild.. Getting parts are not too bad but I have a friend in AU so things are much easier for me.


Off subject of what you're asking for:
If I were you I would stick with the KA and go turbo with a rebuilt block. It will be a lot less exspensive and it's 2.4 compared to 2.5.. Granted the 6x cylinders will spool the turbo faster but performance for the money. KA is plenty fine. I like how the torque numbers stay with the horsepower numbers or even excede the HP numbers. Unlike most SR's from what I've seen with 550HP and 410Ft Lbs. It does depend on your tuning skills but torque is what you feel and I need that.

"Mechanical balance. As long as the KA doesn't sit at 7,400rpm all day, there's not an issue. The displacement is enough that the engine doesn't need to rpm to make power so it's not much of an issue. For those who are worried, spend $1.5k to get a custom full counterweight crank and machine the block to clear the crank. That's the KA's weak spot." -'97 S14 SE Turbo

I have the Sport Compact issue May 02 Vol. 14 No. 05 where they weighed the SR20 and KA block.

SR: 490 lbs
KA: 493 lbs

Was this a mis-print?

Gold plated toilet with platinum fittings. I'll take it!

 

Yes, it was a missprint, and Tq and HP change with turbos and other factors, If you look at any SR dyno with stock turbo and blah blah blah bolt on's you usally looking at more tq than HP. Thanks have a nice day, if you want to jump the damn bandwangon and put shitty engines in your car by all means go ahead.

 

Matt, I appreciate your comments thus far...I mentioned After Dark because its just one of the companys that I've read about...other than that, I have said in a previous post that I am ONLY going off of what I'VE READ, not experience. I know the abundance of parts isnt nearly as high as the SR's, but on the same note, how abundent(sp)where SR parts when it was on the market starting off? No, I havent driven a SR powered 240, this is my first Nissan so I am trying to learn everything I can about them. I know companys claim to have parts in stock, and some dont...some come through, and some dont...but thats not a concern to me at this point. And as far as handling goes...how bad can it really be?. Im not saying Im stuck on it...I just wanted some honest, know-how opinions and suggestions, that are baised...so far I've gotten them and I appreciate it. As far as NICO is concerned, its just another board I came across that has some useful info on....having no intelligence for the 240sx...well...doesnt every board have a few of those Im was just looking for another source for info, thats all. I like the idea of the SR's, theres so many pro's that out weigh the con's...but how common is the bearing failing issues? Because of the support and local know how I would almost 100% go with the SR when it comes time doing my swap...but I like to try and gather as much info on the options for this chassis as I can, then go from there. I hope you (mattback)dont take anything I say personally, I know you wouldnt steer anyone the wrong way.

 

Ooookkk...wouldnt putting a SR be hoping on the bandwagon...as if it mattered or not?

Also, I have come across a few dyno graphs of RB25's making 430+whp on 9psi on a stock block...how bad can the motor be....not trying to drag this debate on, just looking for useful info. And matt this "Thirdly, Taylor at XAT knows about phase 2, he knows about unstable hybrids, he knows about Mckinney, and you know what??"...isnt really nessacary. I would never just order a part on the net because it "said" it was in stock...I've always called first..its just smart. Again..I never claimed to know from experience how any of these companys operate, just what I've read.

 

just to give you an "idea" of the weight differenc, its no where near 100lbs between SR and RB. lets do a test:

with an SR into an S13, the weigth balance of the car is almost 50/50 (with the KA, its 54%front. 46% rear and the SR is around 30-50lbs lighter)

the shipping weight on an SR is 440lbs; harness, ecu, fluids and all

the shipping weight on an RB? 720lbs

theres a little more there than CF hood and moving your battery. and since im probably one of the only ones to drvie one around here, let me tell you once again how much it SUCKS. when you have that much weight of front ti[pping the scales, it doesnt drive right. tire spin is VERY prevelant and just making normal turns in traffic is a real PITA. and THAT car was built on a non-HICAS RB25 using the MUCH smaller and lighter 71C transmission (SR style)

+100lbs for the bigger tranny.

go ahead and do it if you want, but i guarantee youll sell it or wreck it

 

See...now I have better understanding of what the weight difference can matter. I know it was 100+/- but didnt know how it would effect daily driving, other than some people who have the swaps saying it wasnt any different and some people saying its like having a passenger in your car all the time.

 

It's amazing how you say an RB powered 240 would spin. <Guessing the couple dozen people that have done it in America,Japan,Austalia,oh yeah lets not miss Europe(wow thats alot of stupid people).> I guess they didn't know it would spin.

And yes I want drag/daily driver. I don't care about Drifting. For infomations sake, why say things on the internet about how someone would get beat by 6 other sr's in the area? I really don't understand some people <If you drive an 11sec sr swapped 240 then there will have to be a race when finished.> But I Am not just planning on sitting an Rb in there, and going to the strip. I am going to do the suspension/slicks. Turbo upgrade to get me to my goal. And I like rubbing it in, so if you do, and you lose. I'll rub it in for the rest of Your time. I know we have the nissan gods on here and what they say goes, cause they've researched it all.Atleast with the sr crowd(I personally think if you want info on the RB's, they might not beable to accomadate you. Unless your ordereing a 6 month wait part.


But I am not trying to start trouble, I am just saying they might not be as knowledgeable as some people. That have done the rb swap multiple times in other countries. And yes I've grown up around nova dragsters and camaros I'd rather do something different.

 

I agree...as far as I KNOW, Taylor is the only one locally that has come out and said he has mastered the RB harness and completely the install...he also has driven it, and at first did say "the car has torque. LOTS of it. i downshift to 3rd to a red light, and when it turns green, i leave it in 3rd.. its like taking off in 2nd on a short geared car. the front end definately feels the weight though. but it hauls ass and the wastegate sounds fucking badass. im actually going to miss this car.

i drove and built skyline powered 240sx. "

But he also advises againt it because of handling issues which for daily driving is a major concern for me at least. Drifting...dont really care to much about it. Good information though.