RB20DET vs RB25DET vs RB26DETT FAQ

Discuss the RB20, RB25 and RB26 series engines.
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Cameron
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Re: (240sxrule)

Postby Cameron » Sun Mar 02, 2008 11:56 am

omg.. if you have to ask you will never find out. its that simple. Go play with SR's.


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Re: (240sxrule)

Postby nissans13240sx » Sun Mar 02, 2008 12:48 pm

240sxrule wrote:OK please tell me this what would be the best engine for a drifting 240sx

im thinking rb26 but most people say its to big and should be drag im not sure what i what to do though is get an rb26 with a 5 speed tranny

what is the better drifting engine of the rb series?
is a drifting engine?

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Re: (240sxrule)

Postby Kordyte » Mon Mar 10, 2008 10:05 am

You don't need RB26 power in a "drift" 240SX. You'll be fine with any engine, really, even the much-maligned KA24 and RB20 can pretty easily get the ideal-for-drift 350-400hp.

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (krayton)

Postby bluebird510 » Tue Mar 18, 2008 12:02 pm

sorry again non-related does anyone of you guys have a left over mech. speedo from your rb20 swap and can you sell it to me?

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (bluebird510)

Postby mmm240 » Tue Mar 18, 2008 12:11 pm

You know your in the wrong forum, but you post here anyway. Take my hand i'll walk you to the classifieds

zeromain?id=174

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Geppeto818
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Re: RB20DET vs RB25DET vs RB26DETT FAQ (mmm240)

Postby Geppeto818 » Tue Apr 08, 2008 3:10 pm

Does anyone know the weight difference between and RB20 and SR20?

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (Geppeto818)

Postby mmm240 » Tue Apr 08, 2008 8:04 pm

Geppeto818 wrote:Does anyone know the weight difference between and RB20 and SR20?
16000lbs

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archangel21
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Re: RB20DET vs RB25DET vs RB26DETT FAQ (gbaz77)

Postby archangel21 » Sun Jun 01, 2008 5:26 pm

ok i have a rb20det full swap but i have a j30 diff will that still work with the s13 drive shaft or will i need to get a stock s13 diff or jus a new drive shaft thanks for any insight on this delimma

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (ZenkiCam)

Postby skylinegtr20 » Tue Jun 03, 2008 7:06 pm

ZenkiCam wrote:
LOL fanboys...
I have a GTR. And I would just like to agree with the original post.... $$$$ $$$$ $$$$. Fully rebuilt my engine too a 2.7L with forged internals, head work IE. Cams cam gears etc... and added GT4088R, and GReddy manifold. Let me tell you.... $$$$$$$$ but will be well worth it when she is running!

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (skylinegtr20)

Postby mmm240 » Tue Jun 03, 2008 7:14 pm

skylinegtr20 wrote:
I have a GTR. And I would just like to agree with the original post.... $$$$ $$$$ $$$$. Fully rebuilt my engine too a 2.7L with forged internals, head work IE. Cams cam gears etc... and added GT4088R, and GReddy manifold. Let me tell you.... $$$$$$$$ but will be well worth it when she is running!
pics and video stat!

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Coolwhip
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Re: RB20DET vs RB25DET vs RB26DETT FAQ (archangel21)

Postby Coolwhip » Wed Jun 04, 2008 8:51 am

archangel21 wrote:ok i have a rb20det full swap but i have a j30 diff will that still work with the s13 drive shaft or will i need to get a stock s13 diff or jus a new drive shaft thanks for any insight on this delimma
stock driveshaft will be fine in your application.

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (mmm240)

Postby KakkoiiRacing » Mon Jun 16, 2008 9:29 pm

mmm240 wrote:
16000lbs

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (krayton)

Postby KakkoiiRacing » Mon Jun 16, 2008 9:40 pm

so, just as general info...you could stroke and bore an rb20 block to fit rb26 pistons and rods?what kind of result would this produce and what kinda head work would you need to look into??just checking the idea out because it's entertaining my tinuh wettle mind

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (KakkoiiRacing)

Postby Coolwhip » Mon Jul 14, 2008 4:17 pm

you stroke a RB20 using the RB26 crank. Custom pistons are in call for this setup.

You'll end up roughly a 2.4L RB. Depending on your piston bore is what gasket you'll use for the head as well if you need to enlarge the domes or whatever on the head.

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (Nameless EJ6) rb25 engine wiring

Postby mautoelect » Sat Jul 19, 2008 6:22 pm

Nameless EJ6 wrote:I'll chime in soon.

Excellent sticky!

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dragonian89
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Re: RB20DET vs RB25DET vs RB26DETT FAQ (Nameless EJ ... (mautoelect)

Postby dragonian89 » Mon Jul 21, 2008 4:26 pm

Back to the RB's. I'm torn between the RB25DET and the RB26DETT. I really want the 26 but i think that i might have to settle for the 25. Besides the upgradability of the 26, how much better is the 26?

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (dragonian89)

Postby mmm240 » Mon Jul 21, 2008 5:34 pm

Get yourself a neo RB25 and be happy

mautoelect
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Postby mautoelect » Mon Jul 28, 2008 1:55 pm

rb25 104 pindata

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (gbaz77)

Postby Fuel4Blood » Sat Aug 23, 2008 6:41 pm

nice information

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (Fuel4Blood)

Postby mentordrift » Tue Sep 02, 2008 3:18 pm

I've found that emissions are pretty simple here in Ohio for RB engines. A simple catco high flow catalytic and my rb25 passed with 98% efficiency. Just have to let the car warm up, is all.

and have a pre-obd2 car

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Re: Back on Topic (eh?)

Postby pawpaw18_00 » Thu Sep 04, 2008 5:19 pm

I dont want to burst your bubble but to truely bllueprint an engine would cost mad $$$$ and every engine would have to be hand assembled...not only does blue print mean bearing clearances but also balancing the rotating assembley, ring end gap, bore ID and taper, piston to wall, deck height, not to mention top ed components like valve spring install height, seat pressure, valve guide clearance, etc. Hands down no mass produced RB engine is truely blueprinted, they may have tight specs but not blueprinted...only RB engines that i know are blueprinted are the 400R...sorry eh...

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Re: Back on Topic (pawpaw18_00)

Postby xX RB Xx » Thu Sep 04, 2008 8:34 pm

anyone know if a ka tranny will bolt up to an rb20?

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Re: Back on Topic (xX RB Xx)

Postby Coolwhip » Fri Sep 05, 2008 5:15 am

xX RB Xx wrote:anyone know if a ka tranny will bolt up to an rb20?
it will not, gears are the same, housings are different.

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (krayton)

Postby namor01 » Thu Sep 11, 2008 4:07 pm

I've recently considered an rb25 or rb20 for my daily driver s13 (no drifting, maybe kicking out the wheels ocasionally but no drifting). so any real life experience opinions on my idea?rb20?rb25?

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (namor01)

Postby nismor240sx » Wed Sep 17, 2008 6:59 am

namor01 wrote:I've recently considered an rb25 or rb20 for my daily driver s13 (no drifting, maybe kicking out the wheels ocasionally but no drifting). so any real life experience opinions on my idea?rb20?rb25?
thank god, the guessin i have been looking for since i started to read all of these post. please some one answer this. I'm leaning more to the rb20 side because im going for a dd, and want to have the rb > the sr. and is it just me or is the rb25 enough for a s chassis? do u really need the rb26dett, unless ur going for drag.lol just my 2 cents. (Newbi Q ) i have also hear that the stock tranny on an rb20 is weak, but how? will it be ok for a dd w/ minor drift tendensies?

NICO

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (gbaz77)

Postby Mr.Nissan240sx96 » Wed Sep 17, 2008 9:16 am

dumb question, but here it goes anyways.

best websites to order the Rb's from?i guess what im asking is, what are good reliable websites where one can order one of these monsters.

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (nismor240sx)

Postby Coolwhip » Fri Sep 19, 2008 9:05 am

nismor240sx wrote:
thank god, the guessin i have been looking for since i started to read all of these post. please some one answer this. I'm leaning more to the rb20 side because im going for a dd, and want to have the rb > the sr. and is it just me or is the rb25 enough for a s chassis? do u really need the rb26dett, unless ur going for drag.lol just my 2 cents. (Newbi Q ) i have also hear that the stock tranny on an rb20 is weak, but how? will it be ok for a dd w/ minor drift tendensies?

NICO
RB20's are fun, and so are RB25's.

The RB20 tranny is noted to be "weaker" than a RB25 tranny. Not to mistaken as a weak transmission. 20 Trannys are more than capable to handle daily load and some thrashing. To consider, RB20 tranny = SR20 tranny strenght since they use the same internals.

What ever your budget can afford/ application you seek to use the motor for will determine which route to take.

Either way, you'll be happy with your purchase if wisely research your journey.

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (Coolwhip)

Postby nismor240sx » Sat Sep 20, 2008 3:08 am

Coolwhip wrote:
RB20's are fun, and so are RB25's.

The RB20 tranny is noted to be "weaker" than a RB25 tranny. Not to mistaken as a weak transmission. 20 Trannys are more than capable to handle daily load and some thrashing. To consider, RB20 tranny = SR20 tranny strenght since they use the same internals.

What ever your budget can afford/ application you seek to use the motor for will determine which route to take.

Either way, you'll be happy with your purchase if wisely research your journey.
thanks, i have another question, i have a megan 1 piece short shifter kit on my ka, i know that it will bolt up to a sr, but i saw a picture of a rb20 and i noticed it looks very similar, anybody know if it will bolt right up, i can always just wait till i purchase one, but i was just wandering?

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (nismor240sx)

Postby Coolwhip » Tue Sep 23, 2008 6:12 am

nismor240sx wrote:
thanks, i have another question, i have a megan 1 piece short shifter kit on my ka, i know that it will bolt up to a sr, but i saw a picture of a rb20 and i noticed it looks very similar, anybody know if it will bolt right up, i can always just wait till i purchase one, but i was just wandering?
Carl did a write up on installing iirc a KA or SR short shifter in his 20 box. search it up.

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Re: RB20DET vs RB25DET vs RB26DETT FAQ (krayton)

Postby frreakyskater168 » Thu Oct 02, 2008 3:10 pm

i dont care about the money, i still wanna put an rb26 in a 260z


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