Jump to content
SAU Community

Recommended Posts

Hey guys I might be doing a Neo Rb25 conversion into my s13 as my mate has a half cut of a r34. TOkyo toys can do the conversion. Now how is the potential of a Neo rb25? Like I heard its hard to tune as most tuners(here in qld) dont know how to tune them for more power. Any r34 owners here have problems with getting more power?

Link to comment
https://www.sau.com.au/forums/topic/19584-neo-rb25-conversion/
Share on other sites

Are we talking RB25DET Neo or RB25DE Neo here? I haven't heard anything about either being hard to tune. As far as I know they're basically the same as the R33 engines.

I reckon an RB25DE would be a nice cheap upgrade for a Q's Silvia or even a K's CA18DET. Have you checked out how it will affect the weight balance?

Mase - Hehe nah dude its completely legal. Its been done heaps of times. Some of my friends have rb20's and rb25s in their silvia's/180s. The rb25 ones go REALLY HARD. They are awesome. Just that none have seen a NEo rb25 in a s13.

MIC33R - This is a Neo Rb25det. Well I knew a mate who has a r34 and he spent like 10 grand with upgrades and to only get maginal gains. This was done at sub zero too, so it was at a pretty reputable place. BUt yeah he says that just the tuners here in QLD dont have much experience in tuning the NeO engine. But I think NSW it might not be the case as there is probably a more wider range and experienced tuners there.

Doesnt it have improved VVT as well, ie greater range?

Just about any turbo motor will improve from stock if you stick to the age old formula, ie, exhaust, intake filter, management, boost. After that it goes on, cams, cam gears, porting, bigger turbo etc - usual stuff. This is of course not taking into account weaknesses in any support systems (fuel system, clutch, etc)

HPI have run a series of articles on an R34 GTt (RB25DET Neo), and have extracted much better power using exactly this process. At last count I think it was putting down approx 230-240 odd rwkw with a highflow, and now they are doing injectors, turbo, manifold, head gasket, mild port - aiming for around 300 ish.

I am not aware of any major differences between the R33 and R34 engine at the basic block/head design level

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

    • Mixing things up - installed some leather recaros to match the leather seat covered rear seats. Interior looks pretty schmick now except for some slight wear on the steering wheel which I will monitor and address if it becomes worse or actually noticeable!  
    • Didnt realise RB's had more then 1 head.
    • I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
×
×
  • Create New...