Jump to content
SAU Community

Recommended Posts

have a ceffy and i want more torque...

i have heard of people putting in a N/A rb25 completely standard with a turbo bolted on and making big numbers and minimal lag... also being able to run it off of a rb20det computer

i was also considering - if i was to go this route to use turbo pistons and an aftermarket metal head gasket to lower compression. the n/a has no oil squirters which could be a problem (so i've been told) but also been told that can get away without them and its not a major issue...

does the N/A 25 have to be NON - VCT to be able to utilise the rb20det computer still?

OR

go the rb25det route - i already have a rb25det gearbox installed so going for engine/box package doesnt make much sense unless its cheap and i sell the spare box seperately...

i'd also have to change the loom/computer - is there anything else i'd have to change?

-------

mods included to be bolted up are - hks2530 / hks fcd / ebc / fmic / pump... currently i am making 236rwkw @1.2 out of the rb20det so i'm not after more power really, just more down low torque...

thanks.

BTW - i know i could just rebuild my own motor to 2.3etc... but i may decide to do that aswell over a slow period of time.

Link to comment
https://www.sau.com.au/forums/topic/108241-upgrade-na-rb25-or-rb25det/
Share on other sites

Hey mate.

Yeah I think it would have to be a non VCT one to be run by the R32 ecu, or you'd have to lock the cam in one position (adjustable cam gears?).

If you use the factory R32 sensors on the new motor, i cant see why it would have a problem running with the factory ecu.

Im looking at doing the same swap into my GTS4 and it just seems like a lot less hassle than rebuilding or making an RB30/22/24

Or when your talking about putting in headgaskets and such you have to pull the head off. So why not go the rb25 combo for the R32 using an RB25det bottom end with the N/A RB25 head off the late R32's. This Gives you An rb25 but you can use your standard loom, computer (remapped of course) and all your auxillaries (manifolds etc,etc.) will bolt straight up. That is the basic idea to my understanding and if you love your car enough, give the motor a freshen up while its appart to give you 200,000kms solid service instead of ?unknown Kms before you have issues.

May be some one who has actually done this combo could offer a more accurate account of what is required

But it would seem that this would be much more appealing than a full engine, loom and computer conversion

Only an my oppinion to give you some alternatives :O

Edited by ellie

hmmm very interesting

well its going into a cefiro... and the current computer actually says c33 on it - so i'm guessing laurel computer :S

just seems not many ppl have done it yet... all your opinions / alternatives are welcome as i would just love to get some more torque out of this car...

possibly - i might be able to purchase a rb24 tomei motor - but it needs a rebuild/freshen up... would this be a good option? as then all i would need to do is remap the comp and everything else would be exactly the same...

also add cams / h.gasket aswell into that...

good plan ellie but the cost to source the 25 na head and then a 25 turbo bottom end would out way the postives I think you would only go that way if you already had some of the parts.

24's already running a remaped ecu Im sure it would be sold with the engine then you've just gotta check to make sure it's still suitable with any extra mods you do.

Valid point 1400r but to stroke the RB20 is also a massive cost if done correctly even if you're in the industry. Add on top of that the dismal flow the RB20 head has compared to an RB25 so even with extensive head work and CA18 valves (1mm larger) you could only expect close to 85% of the flow of a standard RB25. add to that again the price you would pay even at mates rates for the head work = $1000+. So yes getting the RB25 together may cost you extra up front but with a light freshen up being cheap as chips compared to borring the block, all balancing, grinding clearance on cranks and big doolar head work to get a decent result worth the time and effort, I feel in the long run you'd be better off going an RB25 or as has been suggested every time this subject has come up for around the same cost build an RB30DET weapon that any one would be affraid to line up against.

Of course these are only my opinion and should be seen as such :O

In the end you should see if someone would take you for a spin in there car that has not just what you want but what you can afford. So then it becomes a matter of what YOU want!

Edited by ellie

I know personally, dispite the cost, i'd love to have a crack at an RB24 just to have something a little different and from 1400rs' account of how it drives it sounds like a barrel of fun!!!

See if I lived in adeliade, I'd be hitting 1400r up for a ride in a heart beat to experience the motor and see if it's what i really want.

well i'm not really interested in 'lining people up'... so maybe the rb30det wouldnt suit...

i have driven the white ceffy 2.4 that ryan is talking about and its nuts... so much torque down low... but still rev happy... this looks like it is going to be the winner...

Not my primary objective either as i couldn't give a rats ass what my car runs down the 1/4 mile but being interseted in performance cars and being willing to take on an engine build i would assume that you wouldn't mind beating the guy next door. I'm not a cruiser or a street racer but it sure is satisfying when a V8 pulls up and lets a snide comment slip your way (JAP CRAP!) and you absolutely obliterate him. That was all i was implying by my comment, that with an RB30det you could knock most anything flat that came before you for what by many accounts is a cheaper and more rewarding build

As i said in the post above, i would love an RB24 and wish you all the best !

On a side note: This subject comes up a lot so maybe you could document your build and any problems along the way which would give people a much more definitive idea at what is involved and things to look out for. Even if you don't i'd love to see how it turns out so post up some results etc.

P.S. 1400r: have got your set up posted somewhere or could you post it here cause i'd would most appreciate it

Edited by ellie

Yo my 32's setups in my sig

the 24 ceffy is works car it was fairly stock apart from remap when it came into the country has had cooler and turbo put on

but excess boost (1.5 bar) has reduced the comp in cylinder 6 so its coming out for a rering

so either Im buying the whole car will a rering (if mine sells) or Huddy can buy just the motor

ps Huddy's ceffy is a track bitch so no V8 traffic lights grand prix

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

    • Hi, is the HKS  Tower Bar still available ? negotiable ? 🤔
    • From there, it is really just test and assemble. Plug the adapter cables from the unit into the back of the screen, then the other side to the car harness. Don't forget all the other plugs too! Run the cables behind the unit and screw it back into place (4 screws) and you should now have 3 cables to run from the top screen to the android unit. I ran them along the DS of the other AV units in the gap between their backets and the console, and used some corrugated tubing on the sharp edges of the bracket so the wires were safe. Plug the centre console and lower screen in temporarily and turn the car to ACC, the AV should fire up as normal. Hold the back button for 3 sec and Android should appear on the top screen. You need to set the input to Aux for audio (more on that later). I put the unit under the AC duct in the centre console, with the wifi antenna on top of the AC duct near the shifter, the bluetooth antenna on the AC duct under the centre console The GPS unit on top of the DS to AC duct; they all seem to work OK there are are out of the way. Neat cable routing is a pain. For the drive recorder I mounted it near the rear view mirror and run the cable in the headlining, across the a pillar and then down the inside of the a pillar seal to the DS lower dash. From there it goes across and to one USB input for the unit. The second USB input is attached to the ECUtec OBD dongle and the 3rd goes to the USB bulkhead connected I added in the centre console. This is how the centre console looks "tidied" up Note I didn't install the provided speaker, didn't use the 2.5mm IPod in line or the piggyback loom for the Ipod or change any DIP switches; they seem to only be required if you need to use the Ipod input rather than the AUX input. That's it, install done, I'll follow up with a separate post on how the unit works, but in summary it retains all factory functions and inputs (so I still use my phone to the car for calls), reverse still works like factory etc.
    • Place the new daughterboard in the case and mount it using the 3 small black rivets provided, and reconnect the 3 factory ribbon cables to the new board Then, use the 3 piggyback cables from the daughterboard into the factory board on top (there are stand offs in the case to keep them apart. and remember to reconnect the antenna and rear cover fan wires. 1 screw to hold the motherboard in place. Before closing the case, make a hole in the sticker covering a hole in the case and run the cable for the android unit into the plug there. The video forgot this step, so did I, so will you probably. Then redo the 4 screws on back, 2 each top and bottom, 3 each side and put the 2 brackets back on.....all ready to go and not that tricky really.      
    • Onto the android unit. You need to remove the top screen because there is a daughterboard to put inside the case. Each side vent pops out from clips; start at the bottom and carefully remove upwards (use a trim remover tool to avoid breaking anything). Then the lower screen and controls come out, 4 screws, a couple of clips (including 3 flimsy ones at the top) and 3 plugs on the rear. Then the upper screen, 4 screws and a bunch of plugs and she is out. From there, remove the mounting brackets (2 screws each), 4 screws on the rear, 2 screws top and bottom and 3 screws holding in the small plates on each side. When you remove the back cover (tight fit), watch out for the power cable for the fan, I removed it so I could put the back aside. The mainboard is held in by 1 screw in the middle, 1 aerial at the top and 3 ribbon cables. If you've ever done any laptop stuff the ribbon cables are OK to work with, just pop up the retainer and they slide out. If you are not familiar just grab a 12 year old from an iphone factory, they will know how it works The case should now look like this:
    • Switching the console was tricky. First there were 6 screws to remove, and also the little adapter loom and its screws had to come out. Also don't forget to remove the 2 screws holding the central locking receiver. Then there are 4 clips on either side....these were very tight in this case and needed careful persuading with a long flat screw driver....some force required but not enough to break them...this was probably the fiddliest part of the whole job. In my case I needed both the wiring loom and the central locking receiver module to swap across to the new one. That was it for the console, so "assembly is the reverse of disassembly"
×
×
  • Create New...