Jump to content
SAU Community

Recommended Posts

Hi there,

as my r34 25det neo spun a bearing last week, I am going to be building a 25/30.

I will be using the following parts in my build,

JE pistons 86.5mm

Spool RB30det rods

ACL race series bearings

Crank collar for oil pump drive

Nitto Headgasket

Supertech valves, guides, retainers, springs

Camtech 272' cams

Bosch 1000cc injectors

Garrett GT35r .82 rear

6Boost exhaust manifold

Slide Industries Intake plenum

I'm hoping for a reliable power output of around 500-550rwhp.

I am still searching for information on how people have disabled VCT, is it as simple as welding up the hole?

so if anyone has any information please share :)

Thanks

Corey

Link to comment
https://www.sau.com.au/forums/topic/429221-rb30det-build/
Share on other sites

  • 2 weeks later...

With the cams I'll be running I wont be able to run VCT anyway, as for the oil pump ill probably end up with a new standard rb25 pump with a billet gearset :)

thanks guys

Why not change the cams then, if you are only running a GT35R surely tomei type b 260s would be a good match and you can keep the VCT. I am looking into doing something similar. A few people on here seem to be getting great results from the HTA range of turbos in terms of better response and top end power compared to the standard garretts.

My RB25 Neo is running fine at the moment and I am looking at getting one of the HTA GT35Rs and putting that on and then later down the track building up an RB30 bottom end as the 35R might be a bit laggy on the standard 2.5, even being the HTA version. But from what I read the VCT is a good thing so just something to keep in mind, a lot of the guys in the RB30 conversion thread try to keep the VCT.

Link to comment
https://www.sau.com.au/forums/topic/429221-rb30det-build/#findComment-6961931
Share on other sites

That's exactly the same spec's as my motor

Accept mine has a standard bottom end & made 380kw at 17psi on 98octane.

keep in mind i had 3 broken ring lands at the time so loosing compression in those cylinders.

you should be able to crack way over 400kw easily.

Link to comment
https://www.sau.com.au/forums/topic/429221-rb30det-build/#findComment-6965323
Share on other sites

  • 2 weeks later...

okay guys, well I have received my block and head back from the machinist, I have restricted both oil feeds in the block to 1.5mm feeds, the head has been ported and had a service with the new valves, springs, retainers, and cams. the block was bored to 86.5mm and drilled and tapped for the extra tensioner as well as a crank collar fitted.

I'll add some pics in the next few days :)

Link to comment
https://www.sau.com.au/forums/topic/429221-rb30det-build/#findComment-6976704
Share on other sites

Hi there, it will be used as my daily with the occasional track events, as for engine builders I'm not exactly sure where your from, RIPS always seem to build some porn looking motors but I've gone with a local engine builder so I'm not really familiar with who else is out there, usually a machinist shop is a good place to ask or your local import specialist will have a good idea

Link to comment
https://www.sau.com.au/forums/topic/429221-rb30det-build/#findComment-6990751
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


  • Similar Content

  • Latest Posts

    • Yeah we keep on in the dailies, it is pretty poor how many animals get hit and the driver leaves without checking....have saved a couple of little ones over the years. Bit of a gruesome job though, pouches generally need to be cut open because they are so tight and often the joey doesn't realise mum is gone so they are still locked onto the teat. I checked the modules in front of the DS wheel where an oil cooler should go.... There is the radar unit - that can go for race use) One of the 2 HX water pumps, the silver cylinder. That needs to be kept but might be able to be relocated But the bad news, the big computer mounted vertically in front of the wheel (blocking any potential air exit) is the electric steering computer. That is required until/unless i do a hydraulic steering conversion, and in CAD based modern car design it is not like I can just pop a big unit like that somewhere else (plus the loom would be too short anywhere else too). So, the passenger side is OK to clear out (just use a smaller washer reservoir, potentially elsewhere), but the DS no beuno
    • Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
    • BTW I measured the jack I have, it is 70mm at the saddle but you only have about 700 until it returns to 150mm high at the cylinder so it is good but no magic bullet.
    • My experience with Rising Sun Exports Before agreeing to the sale I tried to do as much research as I could (obviously), his Facebook reviews are 98% and he goes Live at least once or twice a week. I contacted 2 people in the UK who had used him for their imports, both had positive feedback. His explanation and talk through of the import process was thorough, answering any query no matter how stupid it was. It felt as soon as the money was sent, communication dropped off. I asked for shipping updates every 2 weeks or so, not wanting to pester him, he never had any updates. I wasn't informed the car had been dropped off at the port, I only found out by his Facebook story. I asked for the photos taken at the port, knowing he would need some for insurance purposes. I received a few 5 second clips and that's it. When asked again, he said his staff had them. Weeks later I asked again, he tells me he doesn't have any, but does have 50 photos from the original advert. I never received them. I eventually got the documents sent via WhatsApp after I mentioned the port was requesting them. I purchased a CarVX report, to find out the vehicle is a Grade R with recorded accident damage, first recorded in 2017 when it was first auctioned. He never told me the grade, then again I didn't ask. His response was "Grade R means nothing, it wasn't chassis damage". Still, I would have liked to have been informed about it. Jon prides himself on being open and honest when it comes to inspecting cars, it's his main job doing so at the auctions for customers. When the vehicle arrived in the UK I noticed a few little cosmetic issues. It's a 21 year old car so it wasn't going to be mint condition. The side skirts are cracked on each corner and the sealant is failing. The front grill on the bonnet/hood isn't secured very well, mounting studs are missing. Both minor things, but again, it would have been nice to be told. During a Facebook Live walk around video of the vehicle, he mentioned it has a front Whiteline anti roll bar/sway bar. While on the inspection ramp, I noticed the stock item has been installed. When first questioned, his response was "the ARB? Switched? Since when, it never had them". Since sending video and photo evidence I've not received a response. I'm probably being over critical of the overall condition of an old car, but all I wanted was honesty (which he claims to have). I'm aware I wasn't his only customer, he's busy doing XYZ but other reviews praise him for great communication with regular updates and photos, I felt I didn't receive the same treatment. 
    • I was able to get some underside photos while the car was on the ramp The suspension is all Altezza/IS200/IS300 so getting part's will hopefully be less of a headache
×
×
  • Create New...