RB20DET VS SR20DET

[imposible drift]

I've been reading about RB20DET and SR20DET .
I always see the discussion about the KA-T and SR
But which of these two engines is better

[Pantaro]

ive actually been debating between the rb and ca motor myself

[Sil240]

Have you tried SEARCHING? ??

There are literally hundreds of these exact post in the RB forum alone.

They have tons of good information.
Check the stickies

[Seanzyyy]

Have you tried SEARCHING? ??

There are literally hundreds of these exact post in the RB forum alone.

They have tons of good information.
Check the stickies

true statement.

if you're planning on doing one of these swaps and cant decide,
go with an sr20 over the rb20.
rb25>sr20>rb20 in the 1k-2k price range.

[l0nestar]

true statement.

if you're planning on doing one of these swaps and cant decide,
go with an sr20 over the rb20.
rb25>sr20>rb20 in the 1k-2k price range.

I can not comprehend why someone would go with an RB20 other than purely from a fiscal reason.

Personal experience says KA-T. (But I enjoy low-end torque over high-rev HP)

[Pantaro]

i think the rb20 choice is mostly because of price

[s13drifter88]

i prefer the ca18 but between the 2 id rather have the rb20. iron block vs allum, will accept the big bada** unbreakable rb25 trans, no rockers to jump off nand discombobulate the head, and they sound soooooooooooooooo good.

[l0nestar]

You can easily swap in an SR20 in a weekend.
Or possibly a long Sat if you have everything you need there and a buddy or two.

[s13drifter88]

GDimension did it in 6 hours (sr20). extend the maf and O2 plug, swap bthe dash plugs, re-use the trans and starter harnesses. if theres 3 ppl, itll take NO time. 2 people pull ka and install ca (or sr) while one guy wires. by the time the ka comes out the other guy should be finished with the harness. while u and a buddy install the new motor tell him to install ur walbro and tie up the loose ends... DONE. Enjoy 1.8L of pist off under dog. my recomendations for the ca tho, atleast swap for a red top sr t25. clock the intake housing from 12 o'clock to 1 o'clock so itll clear the manifold, stock oil and water lines are compatible no problem. they make good power with the red top t25.

[danielmcn]

sr20= overated
rb20= underated

that the diff they make about the same power from the factory, the rb is stronger but the sr has more state side aftermarket support. rbs are more unique and thats the main reason I got my rb20det( that and I hate sr20s and there just cheaper). I would have gotten the ca over the sr if not for the rb being the same price as the ca.

[Cjmartz2k]

Swapping in an RB for the cool factor of it being an RB = ghey. Even if it was a show only car and nobody cared about performance vs. cost (or performance at all for that matter), you still aren't getting very much "wow" factor since it's a weak d!ck little RB20. I'm all about how a car goes. Nobody is going to give you a BJ because you have an RB20 under the hood (as opposed to an SR). RB20's are heavy. They have very little after market support in the states. They are harder to get over 400rwhp than a SR20. Probably some more stuff I can't think of. Drifters swap SR20's into R32 GTSt's over here btw. I've also seen plenty of SR's that have never had the head off making 400+rwhp over here. Not so much with RB20's. The one good thing RB20's have going for them is the are damn tuff to break. You can beat the snot out of them.

If I was doing an S-chassis swap in the states, it would be either an LS motor, RB25/26, or SR.



Geez, I always said I would never post in one of these threads.

[Pantaro]

yea i agree with you there danielmcn,if i got an rb20 it would be for the same reasons,besides from my experiance ppl who buy rb20's arn't looking to build a 1,000 hp engine.if your going for all out power you buy the rb25.rb20s just have a nice price tag for what they offer.and as far as aftermarket support goes,yes certain things will be a pain to replace but if you got the money there are also plenty of things that can be custom made for your application.bottom line is if you have the money you can make anything fast,anyone can buy some pre-made part and have it put on their ride,true performance is doing research and having what you need fabricated to suit your goals

[danielmcn]

"cool factor" who said anything about that? I was saying unique, there are too many kids with a sr running around thinking that is the best motor nissan ever made. I would love to see a 400rwhp stock internal sr dd in the states, and I dont mean one that was put on a dyno and had the boost cranked up just to see a number. You may see them over there, but you know that they have more and cheaper parts over they then here. I do see alot of 300-350hp setups(on stock internals that is). look at this one http://www.youtube.com/watch?v=WSReVuIqnOQ and it has alot of stuff bolted to it. Now look at this rb240sx http://www.youtube.com/watch?v=-9GswiaGa_M yeah it has cams and head studs, but he also will gain something if he put a damn exhaust on it too so you get the idea. If I had the money to get the sr I would have gone rb25, but I didnt so I got the next best swap.
when it is all said and done if peak power is what your after then get a big block v8 and build the snot out of that.

[danielmcn]

.bottom line is if you have the money you can make anything fast,anyone can buy some pre-made part and have it put on their ride,true performance is doing research and having what you need fabricated to suit your goals

So true

[s13drifter88]

aww come on guys, whats wrong with an sr20. i thot we all loved our timing chain clatter, poping off rockers, cavitating water pumps, and lets not forget my personal favorite... airating oil sumps. friends car: rb20 with a 3076 (not sure psi), 550s, nistune and n62 maf = 402hp 336wtq, me a while ago: ca18 with red top t25 @ 10psi, n60 maf, safc1, muffler shop 3" exhaust ($60) 248whp 227wtq, friend with sr: t28, 440s, nistune, hks exhaust cam, tube manifold, 65mm throttle body, n62 maf, full tanabe exhaust 271whp 257wtq @ 16psi. sounds like a lot of work and money for just a "piss-on" 271whp

[Yellow4g63]

Now look at this rb240sx http://www.youtube.com/watch?v=-9GswiaGa_M yeah it has cams and head studs, but he also will gain something if he put a damn exhaust on it too so you get the idea. If I had the money to get the sr I would have gone rb25, but I didnt so I got the next best swap.
when it is all said and done if peak power is what your after then get a big block v8 and build the snot out of that.

LoL my car has a exhaust system on it. It didn't meet up with my old down pipe so that's why it's loud in that vid. Anyway 20-25-26-30 it won't matter if you don't have money to fix it up. If ur looking for big power just build a RB30 because 3.0 can never lose.

[s13drifter88]

id rather spend the money with the aches and pains of custom work on a ca or an rb coz atleast something will happen. sr's just seem like my ex... spent money on her and she was still a b*tch. atleast my ca's nice to me when i spend money on it lol

[s13drifter88]

be a badazz, rips racing rb33 stroker with a big single. ive never seen an sr carry the front wheels

[Pantaro]

sr's were never meant to be a performance engine end of story! but hell anything that becomes popular companies will market s*** for it,twilight is complete garbage as a movie but if enough ppl spend money on it a cash cow is born.

[Yellow4g63]

sr's were never meant to be a performance engine end of story! but hell anything that becomes popular companies will market s*** for it,twilight is complete garbage as a movie but if enough ppl spend money on it a cash cow is born.

wtf are you talking about? It came from the factory turbocharged it was meant for performance. I would love to do a SR with a VVL head.

[s13drifter88]

my 87 toyota 4x4 truck came from the factory turbocharged, 22-rte. it wasnt performance.

[Pantaro]

just cause it has a turbo means nothing,everyone knows that the ca18 was killed to save money and the sr was born.which proves it was built better.hence more expensive.

[s13drifter88]

yeah no sh*t. if u want balls out power build as ls2 and set it in there. no replacement for displacement. hard to beat a good small block

[Pantaro]

true story bigger it is,easier it is

[s13drifter88]

the ca cost a fortune to build for lower line sports car. being it wasnt the flag ship of nissan like the skyline was cost had to be cut to keep the price of the 180sx, 200sx, silvia to keep it in a lower price market. here came the sr, the cheap alternative. yeah it made 205hp, it was in the market to compete with the 4g63 and the 3sgte... all which are turbocharged 2 liter platforms. in all seriousness, the 4g63 is a better motor and im by NO MEANS a dsm fan. but really, people build power out of those like they do 2j's. if u really want a badass nissan 2.0, pick up an fj20. wide bore spacing, bore over stoke, iron block. people with s12's love that motor and the ca. wonder why u dont see more sr's in them

[Yellow4g63]

my 87 toyota 4x4 truck came from the factory turbocharged, 22-rte. it wasnt performance.

Didn't know your truck was setup to be a sports car and not a truck?????.

[s13drifter88]

thats exactly my point. thank you for making it but do u understand it?

[s13drifter88]

ok look, im not exactly trying to bag on the sr, i just see there being other options to making power other than the sr20 and there are various reasons as to why i feel the way i do. for anyone that has an sr20 im not trying to insult u and please dont take anything i say as offensive, even if i am being a d!ck and say something that may sound oriented to u i didnt mean to. im only expressing my opinions and views and why i have made the motor selection that i chose for my car. long live the s chassis, God bless the S13

[Pantaro]

yea im not a fan of dsm's either but i have seen up close and personal a 2g talon putting down almost 900 hp they are bad a** no question.

[imposible drift]

Theres just one thing
Silvia vs Skyline
I don't know much of this
but what I can say is
Skyline Best auto made in the whole world so
Skyline wins means RB20DET wins no matter what
lol