I own a 280z, I've had it for about half a year now and now that I have the money I'm ready to work on this project. I'm looking into removing the stock L28 and replace it with an RB25DET...I was about to order the motor, but I was asked if I wanted the series 1 or series 2; that's when I got stuck because I didn't know what I was gonna deal with. so I'm asking for any advice/help/recommendations on which motor or series I should go with.
the sooner as possible would be much appreciated. I'm trying to build this car under a time limit.
thanks.

 

Why not a vg33et swap?

 

This may not be his opinion, but for me it's because I love straight-six engines and the RB series seems like sticking more to the roots of the car for me.

I personally would pick the RB over the VG any day, not because of power or efficiency or how new it is. Just personal preference.

 

Roots of the car? unless he plans on sticking a carb'd l24 in his 280 there will be nothing "roots" about an RB swap, it might as well be like calling an lsx swap more to the roots.

 

I know it may seem ridiculous to you but it's just the way my brain works.

 

Good thing you guys are helping him find the answer...

franco... click (first Google result):
http://forums.nicoclub.com/whats-the...s-t185996.html

Comes down to personal choice, cost, and availability.

 

I'd go s2 that's just a better ignition system and I think more ppl do use the s2 so you might be able to find more help and info on it/the swap. I think there's a write up on how to wire the neo engine into an s30 on hybridz.

 

The short stroke of the RB series makes for that awesome purr they have

 

thanks for the actual help. Lol
yea, the series 2 has a better ignition system but so I read on other pages that the rb25 neo is not worth it and supposedly it has less hp than the series 1...i also read that the series 2 is just a hybrid and was built for "emissions and fuel efficieny" i hear different type of stories and I just dont know what to go with.


to the rest of you guys...I've always wanted to buy an RB engine, Nissan skyline's especially R34's has always been my dream car. >.<
im a big fan of inline 6's the torque they can put out is just amazing!! I wouldn't consider myself going with anything else, personally.

 

I can tell you from personal experience, an basic modded AWD r34 GTR feels like a 4 door 300zx with bolt ons. Awesome cars, but your not missing much. If you go RB, RB30 with the 26 head is the only way to go, there is no replacement for displacement and when turbo's are involved it's that much better. Also if you are stuck on an RB25 I would look for a NEO motor, biggest problem I see with most nissan motors from factory are low duration, mid lift cams.

Also torque is more camshaft, displacement and stroke more then cylinder configuration.

 

just a quick question how much does the rb25det swap cost cause i would love to get it done to my 280z after i graduate high school..

 

Eleventytwo dollars.

Pretty hard to give you an exact number as the cost of the motor, extra parts, and labor / time will vary.

Put that $ towards college.

 

Look like I agree with you on something!

I have researched the crap out of the rb30/rb25det engine build/swap and I am pretty sure that is going to be my future build.



Damned college.. I've gotta get a ton of loans because I'm going to Cal Poly for a Masters degree in Computer Engineering. Looks like my dream car will be postponed a bit.. but hopefully after college I'll have more than enough money for the build.




Also here's a useful PDF for the DOHC conversion of the RB30 block. I have more just not here at work.

http://rb30det.info/attachments/049_RB30_DOHC.pdf

 

people had said they wasted like 10-11k for the rb26dett swap so would it possibly be around the 5-7k range and wouldnt a l28et swap be better for the 350hp range???

my father told me he would buy me a 09 370z but id prefer keeping my 280z and im going to a community college first.

 

You sure have a generous father. And yes you could do an L28et swap. With some tasteful mods and upgrades that engine can reach 350whp with relative ease.

Again though the money really depends on how cheap you find the parts. Sometimes you can get lucky and score things for cheap.

 

only reason for his generosity is because my grades

would it be cheaper than doing the rb25det swap ?? and also im trying to shut all these haters up who drive hondas

 

MUCH.

Tell your dad to buy you a Cobra Mustang then.

 

Hmm might just do that swap instead more easier and cheaper im just aiming for 350hp for now

Wouldnt the l28e take EG,EK,CRX,etc out ??
And plus i still needa fix that fuel problem

 

you're grades? you just said more easier... lololololol

and if you buy the bolt in mounts and driveshaft you're looking at 5k I think plus 3ish k for the motor tranny and harness. Plus you'll need an intercooler and exhaust made up and if you cant wire it in yourself or do the manual labor there is more money to pay someone to do it.

 

I see what you did there..

I am assuming you mean L28et. And yes if it was putting out 350whp I would presume it could take out a stock or moderately upgraded civic.

 

Lmao yea my grades just messed up that sentence

Cant i just find a donor 280zx and take everything i need for the swap??

 

No i was talking about the stock L28e in my 280z

 

Probably depends on the honda and how good of condition your Z is in.

Your car - brand new - had 150hp and the 280's are known for being the lightest of all the s30's.

Most civics in from the early 2000's have like 105-120hp.

 

Yeah you could. That's definitely the easiest way to do it. Though since you're taking it out anyway I'd rebuild it and check everything while you're at it.

 

Stock hondas with D and B series engines..

My car is just had its engine rebuilt like 4 weeks ago and its just having a fuel problem where my car always chokes and hesitates whenever i step on the gad while in gear..

Most the hondas are like early 90's