Well, I have a turbo'd KA in an S13 and my plans were to rebuild the motor this summer and re-do the fuel system and intercooler piping. However, im now starting to think about selling my whole KA motor *turbo, fuel injectors, i/c, etc etc etc* and swapping in an RB25. Thoughts?
Oh, and while my car is sitting in the garage, im trying to score an old subaru brat ( ) for a winter car

 

Hmmm...if i were u id tune the KA to its optimum and just stik with it to be differnt.

 

I say if ya got the cash, have fun!

 

So are you saying that a Turbo KA is more rare than an rb25 swap? Ive never seen an RB25 swap before. Plus, isnt there more potential in an RB?

 

Well there is more potential in any of the RBs, its just that a lot more people are doing the Rb25 and RB20 swaps...well not a lot but yea haha. If i didnt buy my clip all ready i would have a S14 and a turboed KA...but yea. Do wut u want i guess a silvia is a silvia

 

I'm thinking about the RB20 because it would be an easier swap and it would be a lot cheaper. You have any idea how much I could sell my eng/turbo setup/tranny for? Id sell all the add-ons i have. ACT II Clutch, fidenza flywheel, t3 turbo, intercooler and piping, nismo 370cc inj., sard fpr, nissan upgraded timing chain, downpipe, intake filter, all the piping needed, turbo manifold, 8mm wires. Everything but the clutch and flywheel have 10k on it. the clutch and flywheel have 3k. the block and tranny have 60k.

 

yea thats the reason im goin for the RB20...thats y i have one lol. But its not that easy finding parts for it! it sux...if u dont know the right people then u will have a even harder time finding parts for it, in the long run its worth it kus its a skyline motor

 

tru dat (he's throwin up a gang sign ) Do you think asking 3000 for my motor and tranny and bolt ons is too much? Im just curious, i wouldnt do this little sale for a while.

 

whoa i think 3k is a lil to much..id say 1800-2400

 

hmm..well alright. Is the RB20 real responsive to mods and all? I already would have a fuel pump, JWT ECU and exhaust for it. You think $1000 could get me up to par with where my KA is right now? Or maybe the RB20 is faster than the KA-t as is?

 

wuts the HP on ur KA currently, the RB series is really responsive on the mods that u put on it, Ive heard with the BLitz nur spec exahust u get about a 20+ hp gain, cant really confirm that but thats wut ive heard. The RB20 comes with 220ish HP stock..if u up the boost and put on a few bolt on parts u will be close to 300hp if u tune it right or maybe even over 300.

 

wow. Thats insane. What kind of torque do they make? I wouldnt think they'd make too much due to the small everything. pistons, rods, etc etc etc. Is the 220 at the flywheel or at the wheels? What kind of boost can they handle stock? I'd probably run around at 15psi with intake, full exhaust and injectors. 300rwhp?

 

OK, well i belive thats at the fly wheel...not 100% sure but thats wut it usually is. The stock torque is i belive 205, but ive heard that its a very torquey engine. The stock turbo can handle 13PSI daily driving, 15 and it will blow on u. Im ganna run it at 12 or 11 psi once i get it the swap done and get used to the car. It will be VERY easy to hit 300whp. Im lookin to hit 350whp, cant wait.

 

i wouldnt think the rb20 would be torquey. Small pistons, small rods, etc etc. The reason why the KA puts out lots of torque is because the internals are rather large. I might go RB25, custom motor/tranny mounts from UH are only a few hundred dollars. It would be a little more money, but very worth it. I dunno, ill make my mind up by november.

 

i gatta get sum engine/tranny mounts for my RB20 so it will be closer to the firewall and sit a lil lower ganna be a few hundred to0..