Jump to content
SAU Community

Recommended Posts

has anybody done this conversion with the rb25det head? if so i need help with it wat is needed for the prep of the block for it to go on and run properly and with the vct how will that work on the 30 block? if any body can help it would be greatly appreciated....thankx in advance please pm me or email me at [email protected]

Have done a couple of these now. There are a couple of places you can run the vct from but I think, ultimately the turbo oil feed will work best.

fark talk about bringing up an old thread, i read back now and go, oh my did i say that? :)

P.S mine's still not running yet :)

lol can't say I noticed, I just posted ;)

hmmm really need to set aside an afternoon one day just to read the conversion thread...might actually learn something....

i reckon the ops feed is better...shorter length of line to run and it doesnt have to cross the front of the motor.....but it probably doesnt matter.

It is a good place to take it but I have had the problem of bleed off causing the oil pressure light to come on at idle...even though the pressure was fine.

Well I'm in the process of building a new engine for my R33. Now the engine that's going into it is an rb30 bottom end with an rb25na head. I'm after a high power engine, round the 500rwkw mark.

What RPM and boost levels are you thinking of reaching???

What RPM and boost levels are you thinking of reaching???

it'll prolly need around the 2bar for that type of power. i've changed cars to a gtr and hence doing the 26/30 conversion. limiter will be set around the ~8000rpm mark

After being a 'no so' proud owner of a VL commodore. I can say this much from what I've seen on Justcommodore's forum. The RB30 doesn't like going much past 6500 RPM. I could only advise getting a new crank, stronger ends/mains and somehow reinforce the bottom end, I don't know the exact term, but I know Mine's tuned RB26dett strengthened the bottom end of the RB26, if you want the RB30 to go past 6 1/2k, then somehow your going to have to do something similar...

big $$$$'s from what I can gather....

After being a 'no so' proud owner of a VL commodore. I can say this much from what I've seen on Justcommodore's forum. The RB30 doesn't like going much past 6500 RPM. I could only advise getting a new crank, stronger ends/mains and somehow reinforce the bottom end, I don't know the exact term, but I know Mine's tuned RB26dett strengthened the bottom end of the RB26, if you want the RB30 to go past 6 1/2k, then somehow your going to have to do something similar...

big $$$$'s from what I can gather....

dont worry dude it's all sorted :D

i'd just get an r33 rb26 and build that. The 26 will be able to get up to 500kw and probably cause you a lot less headaches along the way.

At least then you can have oil squirters as well which are pretty important if you want help maintain reliability in a high power setup.

when pushing the power you want out of a custom 26/30 engine the most important thing you need is someone who has already done it an got big reliable power.

they would know about the problems that can arise in these engines at big power numbers.

good luck

i'd just get an r33 rb26 and build that. The 26 will be able to get up to 500kw and probably cause you a lot less headaches along the way.

At least then you can have oil squirters as well which are pretty important if you want help maintain reliability in a high power setup.

when pushing the power you want out of a custom 26/30 engine the most important thing you need is someone who has already done it an got big reliable power.

they would know about the problems that can arise in these engines at big power numbers.

good luck

again, i've got everything sorted out :)

You dont happen to have squirtes fitted to your block do you? I want to but the machine shop wont do it as they say its too thin.

nope, too much dicking around, and ur not garuanteed it'll work! just ceramic coat the pistons :)

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

    • 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...