hey i am noob, lookin to do a RB26dett swap into a 240sx..should i go single turbo or keep the stock twins? I was told to use a rb26 motor from a r33 rather than the rb26 from the r32 due to some upgraded parts (oil pump, etc..) But the only motor i see from the r33 is the rb25?? I am sorry for all the questions but i want to make this right..and i know theres some guys on here that know these swaps inside out. And know what works and what doesnt.. My goal is to have around 500whp..
The RB30 is using an RB30 block which i belive was only made in aussi land, then using an RB25 or RB26 head, which is basically Godzilla on steroids. but, blocks are hard to find, hard to get, expensive to get, lots of work, most people dont know much about it, and yea more reasons why i didnt include a section about it. I have never seen an RB30 240sx.
Maybe someone can clarify the best way to make a street legal sr20..maybe a place with a nice package that comes with what you need to make it street legal.
You cannot make any SR20 motorswap Street legal.You can make them pass emissions, but they cannot be made legal, at least not by any practical means. Since the sr20det was never sold in any car in the US, it is not DOT approved or passed any US test and standards.
Do know if I can use a 240sx transmission and a RB26DETT engine? I want to know before i buy the engine and the car.
1. No you cant use any 240/silvia/200sx tranny with an RB26.
2. You need an RB25 tranny (or modification to the transmission tunnel).
3. If you didnt know 1 and 2, i highly suggest you know ALOT more before you buy a 26.
2jz 240s are sweet, pricey and alot of work though.
I think most people actaully prefer the S13 SR's. They dont have to deal with the variable valve timing. and its less of a pain as far as electronics and whatnot goes. the blocks area basically the same and can hold the same amount of power.
actually no, the S15's 6-speed is a weaker tranny than the 5-speeds. which really isnt what you want when your slamming into gears constantly on a road course with 400+whp and big sticky tires and harsh clutch. but then again, thats nothing an pretty new HKS tranny cant solve.
i just wanted to ad that the ka is worth doing for one everyone anymore is doing the sr20 swap thats the whole reason i stayed away from hondas cause everyone and there dog has one thats fast so with saying im quoting. Turbo KA24s can make very reliable power with little effort and some know how. This isn't going to be for the novice 240sx enthusiast unless you buy a bolt-on kit and take it somewhere.
Parts for a KA24 DIY Kit
Turbo Manifold (matched to your turbos flange)
Turbo, of course
Custom downpipe or possibly sr20 downpipes
Custom hot and cold pipes
Intercooler
BOV
Wastegate(unless your turbo is internally gated)
Upgraded Fuel pump
Upgraded Injectors
Some type of Fuel Controller
EGT Gauge (recommended)
WIDEBAND o2 (recommended)
New Clutch (recommended)
So there you have the basic parts you need to boost your KA. The biggest downside in my opinion is the lack of boost the KA can take in its stock form, but if your just looking for some fun 7psi on a SR20 t25 will make more than enough "fun" for you. There are a few comapnies that make BOLT ON kits for our cars (Edit: I dont even think Boost designs is still in busness. There was so many issues involving them, incomplete parts, shit aprts, poor designs, scams etc...). GREDDY makes a bolt-on kit for OBII or s14 KA24DE so that is an option for you s14 KA owners out there. NOW, if you want to go big power on your KA you have some options but all require a rebuild of the bottom end with some forged internals and a headgasket upgrade. Some of the SR parts are also with KA-T's. There are alot of companies that make good parts for your KA and all that info is just 1 search on GOOGLE away but ill help you get started.
KA24DE-Turbo
Stock block...22psi...
12.6@122mph
357whp/331wtq at 15psi http://www.ka-t.org/cory.htm
just wanted to reply to your 7psi post these KA's will push alot more than people think alot of people think that if it isnt jdm motor theres no power now mind im not saying that anyone here is that way but there out there but all in all its the people who try these new things out that make it for the rest of us trying to figure out what to do with our cars the sad thing is i think my 240 is fast as hell already , i have 4-2-1 obx header , 55,000 mile motor stage 1 clutch ,cai i love it and figure im going to get my self in trouble in this car lol be true to your selves f what everyone else thinks
jaystyled: With the RB26 your doing to need an RB25 tranny. a clip will come in the GTR AWD tranny but its best to get a clip. along with a tranny your going to need a upgraded fuel pump. the rail will just be the RB26 rail for fuel. If your not familar with general mechanics and electronics i suggest you aquire some of those skills befor doing a swap.
Silvia Freak:Yes, 91sr = redtop 99sr = kouki model blacktop (newer)
KA24DE-Turbo
Stock block...22psi...
12.6@122mph
357whp/331wtq at 15psi http://www.ka-t.org/cory.htm
just wanted to reply to your 7psi post these KA's will push alot more than people think alot of people think that if it isnt jdm motor theres no power now mind im not saying that anyone here is that way but there out there but all in all its the people who try these new things out that make it for the rest of us trying to figure out what to do with our cars the sad thing is i think my 240 is fast as hell already , i have 4-2-1 obx header , 55,000 mile motor stage 1 clutch ,cai i love it and figure im going to get my self in trouble in this car lol be true to your selves f what everyone else thinks
Okay. I understand that there are people who run much more than 7psi of boost on stock KA motors. The factors that your not taking into consideration are the condition of most KAs out there and RELIABILITY.
The average KA your going to find in a 240sx is going to have miles and have taking a beating over its years of use. The average motor is not going to handle alot of boost for a prolonged period of time. The research I have done over the years has lead me to conclude the 6-10psi is a fairly safe amount if you want reliability.
Im going to bet you that the owner of your 22psi stock KA has absloutely no interest in reliability whereas the majority of us can not pop an engine and think nothing of it.
Well said, any KA motor should be comprssion tested and inspected before boost. compression numbers should be within spec (not sure of the number off the top of my head but they should be 150+ at least. check FSM for exact specs) A good KA can take boost no problem with proper care and TUNING, but dont expect to be able to run 20+ psi, few people have accomplished such a task and i do not recomend pushing the limits beyond 10psi if your worried about anykind of engine failure. Also realize that usually engine failure due to boost/detination will result in a pretty hole in your block and some funky monkey connecting rods rendering the entire motor useless.
I will update this thread hopfully over the the weekend with a new format and new pics.
Well said, any KA motor should be comprssion tested and inspected before boost. compression numbers should be within spec (not sure of the number off the top of my head but they should be 150+ at least. check FSM for exact specs)
Im a FSM whore lately
MAX is 179 psi
MIN is 151psi
MAX Deviation between cylinders is 14psi
$4,300? your talking out of your ass. I just got my swap for 3,100 with an out of box.
well, that all depends on where he went to get it done and where they got the motorset/clip, also what part of the country he lives in I would imagine shipping to the east coast probly costs more then shipping to the west coast
This might be a stupid question but what about a RB25DET NEO Straight 6 R34 Skyline motor swap? would it be the same installation as a RB25DET, would the aftermarket performance parts be interchangable?
Ok my 1991 240sx is a five speed. I bought it as a shell and ive noticed that the rb20's alone are relatively cheap. so heres what ive gathered off of this site..and i have a few noob questions. will the rb 20 bolt into my stock KA 5sp? do i HAVE to have an r32 X-member...and the USDM auto matic transmission bracket will support the rb 5speed should i need to change right? and also lol. It comes with a sohc engine but it had the dohc. he pulled the sohc out of another car but will it work? to get it started so i can at least have a dd for a while? just wandering. sorry for the questions. ive read this forum till my eyes blead. lol i need some answers. ALSO does anyone KNOW FOR A FACT were i might be able to get either the s-15 front lip conversion or MAYBE and r-34 one? r-34 for look B E A utiful...if it even fits but either way please let me know THANKS>...and btw GREAT thred
Gen III/IV GM V8s are becoming popular swaps. Hinson Supercars is making kits to swap these V8s into any 240. I've also seen VG30DEs and VG30DETTs swapped into the 240s, that is what I'm here for. A VG30DE swap.
Hey, I read most of this tread. But still I have a little question... If I want to make a sr20det swap into a 240sx, do I need any parts from the stock Ka motor? The point of this is, if I dont need Ka parts I can buy a cheaper 240sx with a gay Ka motor but can still run, and then swap. But if I need parts, I would buy a 240sx with a good condition Ka in it, so the parts I need with the Sr will be better condition.
I know the best thing would be to buy a 240sx already Sr' swaped, but well I want to know the other option...
Also I will buy a 240sx and want to make it a project car. I am only 17 yo and newbie to car universe etc... What I should look at the most when I will buy the car? (Considering I want to make it a project car) By exemple, the frame of the car, etc...
Thanks alot and for the rest of my questions, I will try to look out on the forum, I know there is alot of infos in here...
I'm incredibally fresh to the world of 240sx's but I'm looking at buying a 95 se.
The downside is it's automatic and not turbo, which means, obviously engine swap.
So far I'm good, but what he's been saying is I want a redtop s13. From everything
I've read it only makes sense to put an s14 in because the dates match, 95-98.
Would it be possible, or even make sense to put an s13 in, as they seem to be
less expensive? Then again, Fast is Fun.
I'm incredibally fresh to the world of 240sx's but I'm looking at buying a 95 se.
The downside is it's automatic and not turbo, which means, obviously engine swap.
So far I'm good, but what he's been saying is I want a redtop s13. From everything
I've read it only makes sense to put an s14 in because the dates match, 95-98.
Would it be possible, or even make sense to put an s13 in, as they seem to be
less expensive? Then again, Fast is Fun.
wait, what... i think you might be tossing out random name drops, not having done very much research at all into what you're going to be trying to do.
the motor you'll find in the 240sx is a KA24E (89-90: single slamming) and a KA24DE(91+ iirc: DOHC)
and just because your KA is not a turbo stock, you can always turbo it and then do a Auto to standard tranny swap, which isn't all that hard if you have any experience at all with how that stuff works.
s13 is just a reference to a 89-94 240
and s14 being 95-98
KA-T > SrNoDsiplacmentDET, imo
just takes a little more know how, and time to get it built up right
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