rb20 vs sr20

[billclinton]

Both of these swaps costs about just as much as eachother.

Which engine will produce more horsepower with basic modifications

Front Mount intercooler
3" from turbo back exhaust
Cone filter
Boost controller/turbo timer


I want to spend no more then 6k on my car. Im going to keep the apperance stock. Im looking for a 89-90 coupe with a bad engine, i find them all the time in tow yards so no problem there. I can get it for about 300$, i bought a few cars from this place and he said he would give me a call once he gets one in (their common)

Going to get Tein Coil overs, 300ZX lsd and front breaks.

[SHO411]

I'd go with the RB20 than the SR, but most everyone will disagree with me. But for 6K, why not get an RB25????? it's just about the same.

[R.W.240]

Im going with the SR just because There will be more US support.

[SHIFT_KA24DE]

true... it'll be easier to find parts for the sr. But, if you got 6k... get a decent ka24de and add the letter T to it. it'll do wonders.

[billclinton]

after i've had 3 timing chains go, 1 in a stanza, 1 in a 240sx and one in an altima. Im never going back to the KA24DE. I was talking about 6k total. Thats in engine and engine mods and suspension and breaks. The RB25 and instalation will take up most of that 6k and not leave much else left. If i buy an rb20 I will have money to mod that and do suspension and breaks and still have money left over.

[GB Phoenix77]

HP might be close... maybe SR might have a very slight advantage. The RB20's stock turbo runs out at about 290. But tourque will be better with the RB.. overall powerband will be better on the RB.

RB sounds better!!

RB20 is the best value of the RB line.

[billclinton]

yeh i think im gonna go rb20, the swap wont be any harder then swapping an sr20

[SHO411]

Actually, they said the hassle of swapping an RB20 wasn't worth it, cuz it is just as difficult as an RB25 swap. I agree the RB25 will be costly, but, I'd say then, get an SR (can't believe I said that), it makes more sense, it will be cheaper to install, and the parts are more ubundant of all the JDM engines. Ppl don't go RB20 cuz most say it ain't worth the trouble, and I agree. An besides, with the SR, you get better weight distribution, and it is lighter, and you still have the same displacement as the RB20.

[billclinton]

RB25 and RB20 are both just as easy to install. RB26 is the hard one. RB20 is cheaper then the sr20 and i beleive it to be a better engine, unless someone proves me wrong.

[billclinton]

i realy dont understand why more people dont do RB20 swaps. I asked someone who had done one at a car show (RB25 S14) and he said it was very straightfoward and he had to get his mounts custom fabbed and did his wiring himself. He told me Rb20 would be just as easy, and even easier in an S13. SR20 costs to much for what it is.

[sRscooby]

i thought the rb20det is pretty straightforward so long as you get a front clip, you can use the mounts from that and such

http://www.nissaninfiniticlub.com/zerothread?id=75506

very good info on the swap

[alkemyst]

Originally Posted by billclinton

after i've had 3 timing chains go, 1 in a stanza, 1 in a 240sx and one in an altima. Im never going back to the KA24DE. I was talking about 6k total. Thats in engine and engine mods and suspension and breaks. The RB25 and instalation will take up most of that 6k and not leave much else left. If i buy an rb20 I will have money to mod that and do suspension and breaks and still have money left over.

If you lost three timing chains (I am reading this as you ignored the noise until they broke) just turn your keys in. It's akin to driving 30,000 miles and not knowing you had to check the oil.

[alkemyst]

Originally Posted by billclinton

i realy dont understand why more people dont do RB20 swaps. I asked someone who had done one at a car show (RB25 S14) and he said it was very straightfoward and he had to get his mounts custom fabbed and did his wiring himself. He told me Rb20 would be just as easy, and even easier in an S13. SR20 costs to much for what it is.

SR20 bolts in...the RB needs special mounts. RB will have more smoothness, the SR more support.

IMHO if you are doing RB do 25 or 26 (converted to single turbo). Great fit and performance....even in Japan, the serious racers make the DETT a DET.

My only hold back from doing a RB25/6DET is the fact they are not legal in the US anywhere. It's a great looking engine in a S14 though.

I am doing a 250-350 KAT.

[GB Phoenix77]

Not to argue with anyone, but....

Just had an RB20 swap done. (I will admit that I didn't do the labor myself, so the info that I will share is what I was told by the mechanics and is reflected in the costs passed on to me)

The RB20 IS easier to install than the RB25. You can use the stock RB crossmember for the 20. You don't need to buy special mounts. You also don't need to cut the hood. Plus with the 20 you can use the stock driveshaft. The 25 requires a new driveshaft. Both need custom downpipe.

The RB20 is as close to bolt in as an RB can get.

The SR is still a little easier though. It is straight bolt in.

Personally, I like to be a little different... Lots of SR's out there.. the RB gets the wow factor. Plus the sound of the RB makes it all worth while.

My two cents...

[lucki17]

sr20det = blown, eazy to fix, lots of support in u.s. rb20det = not blown, lot less suport,good luck working on it. ka-t = not blown, easy to fix, good after market, just right for daily driver.

so between the sr and the rb i say.......rb because its inline six sounds pretty, it wont blow as easy as the sr(from what ive heard and seen they do that alot, a few shops around here have stopped doing the swaps because of that), but with 3k you can make your k.a. stand for kick ass. just a suggestion.