Jump to content
SAU Community

Recommended Posts

  • Replies 90
  • Created
  • Last Reply

Top Posters In This Topic

My Budget RB20DET-

 

Imported with HKS Super Dragger exhaust and K&N Big Mother air pod

Added TurboSmart boost controller - $250, dynoed @ 150rwkw

Added Dump Pipe - $300

Added Cold Air Induction - Free

Added RB25 Turbo - $350

Added Front-Mount - $500 (inc pipes, see http://www.skylinesaustralia.com/forums/sh...ead.php?t=47918)

Added additional Cold Air Induction - $50

 

Next I want to remap the ECU and then it's time to Dyno it again. Hopeing to be around 200rwkw for around $1K. Then that's it with RB20DET, move on before blowing the budget.

I don't think you can achieve a real 200rwkw with the small stock injectors, from the dyno i have experience with, the stock injectors will max out 180rwkw and by then the mixtures will be fairly lean at that.

My Rb20 with RB25 turbo, pod and 3" turbo back exhaust did only 130 rwkw with stock boost and everything else and 11.3 A/F ratio.

My RB20 did 150rwkw with 3" cat back exhaust, pod and turbo smart boost controller on the UAS dyno. What Dyno where you running it on? I've now got a FMIC, 3" dump pipe, CAI and an RB25 turbo, hasnt been dyno'ed with the latest mods yet however.

my 2c...which aint much :)

 

buy a rb30 bottom end from wreckers (mine cost $100 ;))

buy an rb25de head (mine cost $750)

do a std bottom end rebuild of the rb30 using same pistons, just hone, new rings and bearings ($850?)

 

bolt on head to block, drill tap tensioner, $30 timing belt, 2x rb30 tensioners ($80 ea)

 

how much so far?...using rb20 sump, manifolds, turbo (i am to start :)) water pump, rb20 oil pump....no costs here.

 

redrill engine mounts to lower engine, plug in rb20 sensors, mod front pipe.

 

done...turn key and watch the rb30 rumble for under 2k.

 

But as they say...the spending never stops once it starts....i wish i had kept to the plan above and watch people grin :)

 

Seriously though i had the same drama as you. Rb20 blew, and went the rb31. Never look back now :)

The rebuild costs your mentioning, is that doing it yourself? Would there be the need for any boring or machining?

don't think you can achieve a real 200rwkw with the small stock injectors, from the dyno i have experience with, the stock injectors will max out 180rwkw and by then the mixtures will be fairly lean at that

Na stock injectors are good for 200-220rwkw. my 32 makes 190rwkw with stock injectors, pump, reg etc no worries.

I didn't think you could put the rb20 head onto the rb30 bottom end? Is what your saying just a miss type? Or can it really be done?

Using my Rb20 head would be a lot more easy, then looking for an rb25 head if I went that way with a motor build up.

Shoot about 10 years ago using an RB20 cylinder head on RB30's was common. It is a prick of a job, welding, redrilling machining etc. But the result was better than a SOHC cylinder head. Wouldn't even think of doing it now with RB25 cylinder head's being so common and RB26 top ends being almost affordable. :P

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Pressure when IDLING, is meant to be 51PSi... So that amperage value needs to go up a fair chunk... I'd personally be factoring for more like 12amp at least on those runs, and at that point you need to hope the already there wiring doesn't drop you a volt or two, as that's a lot of fuel pressure flow drop off from 13.5 to 12V! Taking idle pressure of 51psi, means the pump will be drawing a MINIMUM of 9amps all the time based on your reading of the graph (3bar base, then allowing an extra 0.5bar for boost = roughly 51psi)
    • Hi all,  I am in the market for an R200 longnose diff out of a Z31 300ZX, or S12 RSX, DR30 skyline, or similar, in a 3.9 ratio.  Preferably a late model one with the M12 crownwheel bolts.  The only easy to find advert for one of these was my ad back in 2007 when I sold it on this forum.  I sold the diff as I had sold the car it goes to, but as it turns out, after 18 years I got the car back late last year, so now I'm looking for the diff !  If anyone knows where to find a longnose R200 LSD with the M12 crownwheel bolts, drop me a line at [email protected] - Bonus paid if soomeone comes up with the original diff (stranger things have happened !).  Cheers   Ben D    
    • Hi everyone, I used to post here a bit from 2004-2013, when I owned various Nissans, in particular my S12 RSX gazelle, which was sold in 2007.  As luck would have it, after an 18 year hiatus, the car found its way back to me last year, and over the past 11 months I have had the pleasure of restoring it with my kids.  One thing that I am after in particular is a 3.9 ratio R200 LSD for it.  I actually sold the one out of the car here back in 2007 , and it would be incredible if I could track down who I sold it to, so I can see how they have progressed over the years (and to be honest, to see whether I can get the diff back !).  Anyways, hi all and let me know "where are the R200 Longnose diffs all at these days ?  Cheers Ben D  
    • Arms will be the same as the G35 or 350Z, but as above, there was a change in the lower control arm where it connects to the ball joint.  That said, you can remove the ball joint cone from your old ball joints and fit them to the new ball joints.  To be honest, I didn't think the ball joints themselves were different. The main ball joint is a bit awkward to replace, you really need to remove the steering knuckle to press out the old one.  Some people have used tools to remove it in place, but it just seemed too hard to get to. If you are going to press out/in that ball joint, then you may as well just replace the bushings in the LCA and the compression rod.  You can buy the compression rod bushing from Nissan, but the LCA bushes, you will need to go aftermarket. Much cheaper than buying the whole arm.
    • Ha, well, it's been.... a bit of a journey. Things have taken much longer than I'd hoped. I'll probably put up a thread at some stage. Hopefully soon. The car's not done any kms since my update in June though, put it that way.
×
×
  • Create New...