Jump to content
SAU Community

RB25/30 Neo clearance in 25GT-T

NiHaoMiaoMiao

By NiHaoMiaoMiao,
in Engines & Forced Induction

 Share

Recommended Posts

NiHaoMiaoMiao Contributor

NiHaoMiaoMiao

Posted
Posted

Hey all,

I have spent the last 2 days trawling the forums for information relating to bonnet clearances or mods required for clearance in a GTT.

A lot of people had issues in R32's that required spacing the chassis and/or modifying the the bonnet brace.

Has anyone had experience with a stock GTT bonnet? I watched and read John's RB25/30 build and he had to mod his bonnet but it was an aftermarket one.

   Any information would be a god send! 

Ps. I will be trying to retain the factory manifold for ultimate low end torque. I am also using a return flow cooler so no piping over the top of the radiator fan area.

Cheers!

Daniel

Link to comment
Share on other sites
  • 4 months later...
NiHaoMiaoMiao Contributor

NiHaoMiaoMiao

Posted
  • Author
Posted
On 1/8/2021 at 1:12 PM, Binarydata said:

Hi, sorry can't help, but was wondering if you had a done the swap yet? I've getting ready and haven't seen much in the way of this. 

Hey mate, not yet. Build had a few delays but should be together soon! Got the bottom end assembled. Will update here for future reference 👍

Cheers!

Daniel

Link to comment
Share on other sites
NiHaoMiaoMiao Contributor

NiHaoMiaoMiao

Posted
  • Author
Posted
On 1/12/2021 at 8:38 PM, Binarydata said:

What are you doing for the bottom end? Are you going to use the Neo head? I've got a NEO turbo head and waiting to get a bottom end for it. Not sure if i want to go factory 30 for forged

running standard crank, forged internals (cp pistons, spool rods, acl bearings).

0.5mm bore and hone to suit pistons and the usual things to do while apart such as linish crank, grub screw crank etc.

the stock rb30 bottom end will take a beating if its in decent condition. i just went with forged as i was already there and will go for bigger power later down the track.

Link to comment
Share on other sites
R32GTS-t RB25DET Apprentice

R32GTS-t RB25DET

Posted
Posted

in my experience, throw a forward facing plenum on it - removes the excessive height of the crossover intake pipe.
cut the engine mounts (the metal ones attached to the block) down by about 15mm, still clears the crossmember (check it anyway) and lowers the engine enough that the turbo/cam gear timing cover wont hit the bonnet.

Link to comment
Share on other sites
  • 1 month later...
NiHaoMiaoMiao Contributor

NiHaoMiaoMiao

Posted
  • Author
Posted

Hey everyone,

Just as an update for future reference, it will foul the stock bonnet, definitely touching the cam gear cover and possibly the front corner of the intake plenum. Will look into it more and update here.

@robbo_rb180  Would I need to extend the steering column/intermediate shaft to be able to space that far down? and would there be drivability issues such as vibrations etc. from the change of geometry?

@R32GTS-t RB25DET I have fathomed that option but $1500+ for a Greddy, then cutting holes into the body for the cooler piping gives me shudders lol. Also want to retain the low-end torque that the stock plenum provides.

Would anyone have any experience of it fitting with just the resizing of the engine mount holes only and some trimming of the bonnet brace? specifically for an r34?

Thanks in advance! 

Link to comment
Share on other sites
robbo_rb180 Grand Master

robbo_rb180

Posted
Posted

no issues but we have installed a aluminium spacer to replace the rubber bush.
Plazmaman plenum is the best way to retain drivability down low https://plazmaman.com/product/rb25-r33-inlet-plenum/
can also use rb30/vl engine mounts or any 40mm thick ones (cortina are ones work)

Link to comment
Share on other sites
  • 1 month later...
NiHaoMiaoMiao Contributor

NiHaoMiaoMiao

Posted
  • Author
Posted (edited)

Thanks for the advice @robbo_rb180.

I ended up cutting the metal brackets for the engine mounts and dropped the motor 7.5mm cold side and 6.5mm hot side. The washers on the bolts restricted how much further down I could cut without fouling them when refitting.

So far so good... just the TCS module on the throttle body touching the middle brace.

I have two options here,

1. Cut out the fouling point of the brace.

2. Run a R33 throttle body.

From reading some ancient posts on here, they are pretty much the same throttle body minus the TCS module. Of course I would be re-using the R34 TPS.

Just wanted to see if anyone has had any issues with fitting a 33 throttle body on a 34 or just yolo and go agricultural on the bracing?

Cheers,

Daniel

Edited by NiHaoMiaoMiao
Link to comment
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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Dose Pipe Sutututu
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By Dose Pipe Sutututu · Posted

      100% this, no point delivering a steam oven when the client just wanted a toaster 
    • MBS206
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By MBS206 · Posted

      The best part of my setup is, we only have two sites. Our head office where I'd put every thing has plenty of internet capacity. We're on a 200/200 dedicated fibre. Even better, there's only like 6 people in the office at most, and the other office has 2 people in it (likely 3 soon). The majority of our work is in a custom piece of software, as it is part of the backend of the system we provide to customers. For our arrangement, on prem would be wayyyyy easier, and a VPN tunnel site to site is easy for me to manage. Scaled at many many sites, or quite a few hundred employees it's starts getting a bit different for all people outside the head office. However, everything in the cloud becomes worse for the people who operated previously at the site that held the servers, as now they're at the mercy of their internet, and not GBPS internal network (f**k the idiots who hook a desktop PC up on WiFi or permanently sit at a desk using a laptop and don't go remotely with it).   It really does come down to the business needs and structure as to what is best. For us, 365 is mainly being moved to for office apps, moving email from Google to Exchange, and setting up "Active directory". Otherwise we have a ticketing system with support that runs on our own cloud system, or the sales process sits in a CRM we pay for. My biggest push back for having most of the shit turned off and saying no when people want new shiney things is "that won't meet our security requirements, or efficiency gains, so all you're requesting is money spend to open us up to security issues, or to make our staff less efficient" Which is funny when one of our core values is "To do more, with less"
    • Dose Pipe Sutututu
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By Dose Pipe Sutututu · Posted

      Think of it as a fancy iFrame with the auth passed through to PowerBI as you're already authenticated logged into Teams   I'm the complete opposite, I hate everything on Prem, it's slow as shit, you need VPNs to get anything happening, then when you want on-prem DBs to talk to say PowerBI you need to install/setup data gateways to essentially VPN back into your SQL instance. I suppose from my perspective, on-prem sucks, but from an infrastructure perspective, your environment is somewhat air gapped to the web via your firewall(s), etc.   The curse of knowledge, the more you know the more you suffer. Farken philosophical shit.
    • Luke808
      R34 Gt-t Clutch Install Guide

      By Luke808 · Posted

      Would you mind uploading the pics again in your steps?  It’s not showing up. 
    • ggub
      Haltech Iat Vs. Oem Iat Rb26 ?

      By ggub · Posted

      Wherever you ask them to. I had one added to the crossover pipe near the BOV as well as the hot and cold sides of the intercooler piping to provide greatest flexibility in measuring temperatures post-turbo. I have the IAT installed in one, and bungs in the other two.  
×
×
  • Create New...