Jump to content
SAU Community

Engineering Question

12DFY

By 12DFY,
in Victoria

 Share

Recommended Posts

12DFY Collaborator

12DFY

Posted
Posted

Hey all, have done an R33 GTS Auto to RB25DET and manual gearbox, my question is with the brakes. I have to upgrade to GTST brakes, but to get it legally engineered do I need to go to the 5 stud bolt pattern or will the 4 stud suffice as long as calipers are changed?

Link to comment
https://www.sau.com.au/forums/topic/205121-engineering-question/
Share on other sites
R32Big_boy Veteran

R32Big_boy

Posted
Posted

Calipers cant be changed without hubs, the bolt holes don't match up i believe.

Also disks wont match the calipers width.

So you need hubs with 5 studs to fit those calipers. Its not the worlds hardest job, as long as you have a breaker bar of some description. ie gal pipe.

ylwgtr2 Grand Master

ylwgtr2

Posted
Posted

it is my understanding that if a certain engine was offered in the same body from the factory then you dont need an engineers report.... IE 6cyl->350 chev in a HT kingswood or say changing a deisel gemini to a 2l gasoline engine its not required....so i cant see the diff

CrispyFries Grand Master

CrispyFries

Posted
Posted

This is the reply I got from vicroads when asking about a ca18det into a ca18de silvia for my gf

Change of Engine

1. Replacement engine is identical to the original engine, or is an

option allowed by the manufacturer for the same model vehicle

The optional engine must be offered in Australia by the vehicle

manufacturer as an option for that vehicle (or certified variants). The

change of engine may be recorded by VicRoads provided that the

registered operator or a motor mechanic, or dealer in that make of

vehicle or an Automotive Engineer signs a declaration certifying the

engine is optional for the vehicle model, and that all modifications

made by the manufacturer for the same vehicle model with that optional

engine, have been completed.

But then as a silvia was never offered in australia so...

But sounds as though an engineer at least has to look at it

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Engineer will need the brakes done, about the stud pattern, you'd need to ask the engineer that

Being its an import - VicRoads will send you to an engineer 9 times outta 10 as they dont want to pass judgement on imports etc.

If it was a AUS car - piece of piss, but ye. Imports are a pain for that

12DFY Collaborator

12DFY

Posted
  • Author
Posted

Thanks guys, I believe the bolt patterns should line up for the calipers, will guess I will find out soon enough. The main reason I ask is that I really dont wamt to get new wheels as the ones on it are quite expensive. Im going to have a hell of a time here in Vic as I have just come from queensland, and compared to Victoria the modification rules are seeming to be very strict. Eg my inlet alone has PWR front mount FMIC, Pod Filter, modded plenum and aftermarket BOV. And the ECU, well I guess I will have trouble transfering rego etc.

How strict is a roadworthy on modification issues, are they concerned with mods or just the safety aspects alone (hence the safety cert)??

SABBAi Grand Master

SABBAi

Posted
Posted
the engine number prefix is the same....so i would simply fit the engine...then go to vic roads and have them sight the engine number....then thats it...obviously change the brakes for safety's sake...

This is how we got an N/A car registered with a turbo motor.

STATUS Grand Master

STATUS

Posted
Posted
Yeah I reckon so.

if he has insurance and wants to keep it he has no choice.

im the worlds biggest fan of moving plates and numbers around but somethings things need to be done corectley :/

ylwgtr2 Grand Master

ylwgtr2

Posted
Posted (edited)
if he has insurance and wants to keep it he has no choice.

im the worlds biggest fan of moving plates and numbers around but somethings things need to be done corectley :)

Who said anything about moving plates and numbers around?????Vic roads dont have anything to tell them a vehicle has forced induction.

An engine block is an engine block and the numbers say that its an RB25 so wheres the problem?

Edited by ylwgtr2

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

    • V35_Paul
      Rv37 400r questions

      By V35_Paul · Posted

      A locally delivered Infiniti have remote start installed but don't come with the remote start key. You need a new remote start key and they just need it programed. And this is different to making/programing a new key that just starts the car.  
    • Lithium
      Shoota's R33 GT-R RB30/26

      By Lithium · Posted

      Cheers, and cheers for sharing so much of the build and also sharing the glimpse of what turns out to bring a lot of us poor decision makers together haha.  I do recommend learning more about how to manage it, if not considering getting a  formal diagnosis.  The discussion with the psychiatrist I got my diagnosis through was quite eye opening, things I'd not even considered to be ADHD related and hadn't mentioned were things she asked about out of the blue and were common themes with people with my flavour of ADHD.   It's not a label for people who are hyperactive and ill-attentive, there's more to it than that and some of it can be much more challenging or damaging - though there are of course two sides to the thing, and a lot of the stuff we have to go through and work on to live with it make us effectively "better" at other things as well. Aside from the fact that there is some argument I could have a bit of ASD seasoning in there (came up during the diagnosis, and neurodiverse things seem to not stay as a cookie cut) I suspect you need to learn more about ADHD if you are puzzled about how hyperfocus could possibly apply.  I *do* personally use "superpower" with quotes deliberately, but it's 100% an ADHD thing due to the exact reason that lack of focus is also an ADHD thing... Loosely speaking the inattentive side of ADHD isn't the inability to focus, it's the inability to control where the focus goes.  Not being able to sleep because brain is more interested in thinking about a stupid thing I said to a girl I liked 30 years ago, not being able to focus on work because my brain is more keen on putting together the torque management strategy we're going to try out with a drag car next weekend, not being able to focus on a conversation with someone I WANT to listen to and respect because there is a flickering light in my peripheral vision.    If I could just stop work and build the torque management setup right there and then I'd not hear anything else until it was done.  
    • Shoota_77
      Shoota's R33 GT-R RB30/26

      By Shoota_77 · Posted

      Maybe you should do some more reading.  Google positive effects of ADHD and you'll get your answers.  One of my personal downsides of ADHD has been talking before I think.   Maybe you have it too?
    • GTSBoy
      Shoota's R33 GT-R RB30/26

      By GTSBoy · Posted

      Excuse me for butting in....but which part of ADHD can be considered a superpower? I would have though it far more likely that some ASD comorbidity is more likely to be contributing to an ability to hyperfocus on something. ADHD being aimed somewhat in the other direction. My shed looks like your shed. My whiteboard list of unfinished projects has entries going back 15 years. I know what you're talking about - I just struggle to connect ADHD to the results being discussed.
    • Shoota_77
      Shoota's R33 GT-R RB30/26

      By Shoota_77 · Posted

      Thanks for reaching out!  It's a blessing and a curse at the same time.  I'm undiagnosed but it doesn't take a rocket scientist to see it in me... I have more half started projects laying around my house, shed, garden, etc taking up space and money, destroying aesthetics than if I added up all of my mates projects together. But, ADHD gives me the ability to hyper focus on things that no mere mortal could even  comprehend.  A recent pool build is an example of that....  I dont know anyone else that would be dumb enough and focused enough to take on then complete something of that magnitude. I call ADHD a superpower but it can equally be completely destructive if not controlled and focusedon the right places. Addiction is a major concern to ADHD people and thankfully my addictions have been no worse than projects, XBOX, chocolate and being an arsehole! It's often hereditary and my 13 year old son is currently learning how to drive it at the moment. Keep lurking! If i can finally finish this bloody thing at some point it will be a win for all of us ADHD'ers! 🤪
×
×
  • Create New...