Jump to content
SAU Community

Recommended Posts

the time has come to realy think about my performance mods on my r32

i was going to stick with the RB20DET but i think it would be

much easyer to extract the power i whant from the RB25DET

so my questions are as follows.

do the rb25 gearbox mounts line up

do i just unplug the r32 ecu and plug in the r33 ecu

or do i have to rewire the whole car

and most importantly

do i have to go through reagency

mel i know you have the rb25 in your 32 so what can you tell me

what other pitfals may i come across

dose any one know any one who can help me with this project

i have herd of some one who ran the rb25 with the rb 20 ecu

but i dont think it ran verry well over heating and such

any help would be much apreciated :)

Link to comment
https://www.sau.com.au/forums/topic/36255-2532/
Share on other sites

  • Replies 72
  • Created
  • Last Reply

Top Posters In This Topic

Skidmark give me a buzz or pm, ill be able to help:) Ive got some stuff to get you started if thats what you want to do. hope this helps Matt Regency shouldnt be a problem if you have made sure all is done properly. Or just put the rb20 engine cover on the rb25 and not many people will be able to tell the differance

Link to comment
https://www.sau.com.au/forums/topic/36255-2532/#findComment-722817
Share on other sites

matt

i was reading a diferent thread about putting a rb25 in a r32gts4

they had trouble with the sump clearing the cross member

is this the same with the GTST

i have also had a couple of people tell me to leave the rb20 in it

because you can get more top end power out of the rb20

than you can get out of the rb25

what do you guys think do you think this is crap

i do because even if you did get that power out of the rb20

it would be unstreetable

input please :boobies2:

Link to comment
https://www.sau.com.au/forums/topic/36255-2532/#findComment-724153
Share on other sites

you can get more top end power out of the rb20

than you can get out of the rb25 .....

Did you ask them where/when/how? It would be interesting.

That extra 0.5L will give you a bit more torque off boost and bring a turbo onto boost a bit quicker. From what I have seen RB20 and 25 can make similar power (peak) with similar mods, just the RB20 needs a few more revs to do it. But you can never deny that cubes do make a difference, that would be like saying turbos dont make a difference or revs dont make a difference, of course they make a difference - everything else being equal.

The other side is, if you blow up an RB20, they are a very cheap engine to replace, and with a 2530 hanging off them.....killer. Alot less hassels, with registration (just inform regency of the engine swap), changeover cost, resale. You can buy a 2530 new with all the bits to fit it (bolts, adaptors, oil and water lines, etc), for 3K.

Link to comment
https://www.sau.com.au/forums/topic/36255-2532/#findComment-724421
Share on other sites

skidmark, dont know about the RB20 being stronger, it does have a lower CR, which helps it handle more boost. I am making over 300rwkw with an rb25, stock internals - its strong enough for me:)

If you have the dollars (around 4.5K) just buy a RIPS 3L engine, with sump already adapted. His GTS4 is running 10s with this engine, certainly scare a few GTRs:p

Link to comment
https://www.sau.com.au/forums/topic/36255-2532/#findComment-725383
Share on other sites

mate if u only want 250rwkws, then keep the rb20. The price to put a rb25 in ur car then get 250rwkws will prolly cost double to that of just slappin on a decent turbo onto the rb20.

theres a good chart going around which allows u to choose a turbo for a hp level. Being a rb20, u want a good turbo like hks that can spool up quicker then others. For 250rwkws, somethin like a 2835 would maybe be ideal.

Link to comment
https://www.sau.com.au/forums/topic/36255-2532/#findComment-725813
Share on other sites

unfortunalty the 2530 will puff short of 250rwkws. however as steve already mentioned, due to the rb20 having a lower CR, the engine wont mind some more boost over 1bar, and hks turbos are really efficeint still after 1 bar, so it may get really close thou.

The 2835 will get u over that mark, but it will be a lot more laggyier then the 2530, and being a rb20, u will feel it alot.

Perhaps speak to a few about a 2540, a bit laggier then the 2530, but should also be a trade off over the 2835. Otherwise choose a 2530, and do other mods that may help u get there, like adding toluene sometimes when u want to use all the power.

Link to comment
https://www.sau.com.au/forums/topic/36255-2532/#findComment-725870
Share on other sites

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



  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...