Jump to content
SAU Community

Recommended Posts

I was planning to put a huge carbon GT-wing (as well as hood) on the back of a R34 GTR like this one from Jetspeed:

aero34.jpg

Mainly for cosmetic reasons as I think the JGTC look >>> tame stock spoiler (I know many people may not agree with me - this is just my taste).

Is it true it is defectable due to impairing rear vision?? Also heard of things like defected due to sharp edges eg., the sharp metal alloy ones and defected due to no replacement for the independent braking light on the spoiler itself (not an issue on the GTR).

Any advice would be greatly appreciated. Don't want to spend $$$ on a spoiler to have it go to waste.

Cheers

Link to comment
https://www.sau.com.au/forums/topic/216459-gt-wings-defectable/
Share on other sites

Not sure on vision impairment but I am sure I read somewhere about a wing protruding from the width of the car could be. E.g if the sides of it are further out than the guards. Not sure if that was in Oz though.

yeah pretty sure they are defectable.

Vicroads didnt allow me to register the car with the wing (came from japan with the wing)

Had to even remove the gt brackets off the bootlid as they can cause harm to someone rolling over my car?

Although i dont think the person flying over my car will be concerned about 2 small gt brackets lol

Technically all alloy bull bars are illegal on toyota's etc for the same reason. Factory plastic bumpers on modern cars are a little more forgiving than solid alloy or steel. Yet i've never seen a 4wd defected because it had an aftermarket bull bar on it.

If its not OEM its technically not legal to fit it unless you get an engineer to over-rule it. Yes that means everything from exhaust systems to brake rotors. Even if its ADR approved, if its not OEM factory fitted (or a factory optional) equipment its not legal unless approved by an engineer.

ADR just makes it easier to get the engineering approvals done.

Edited by Vspec R33

Oh ok cool. Are GT wings easy to replace back and forth with the stock spoiler? As in just removing some screws? If it is, I might get it.

Seriously, I never thought about people rolling over my car and getting sliced up by the wing, and with a soft carbon wing I don't think it would do any more damage than the stock spoiler. I can't imagine how rolling people would fare over the spikes of the roof-mounted vortex generators on the Evo 9 then :blush:

cf_fins_mr.jpg

Oh ok cool. Are GT wings easy to replace back and forth with the stock spoiler? As in just removing some screws? If it is, I might get it.

gt wings are connected onto brackets on the boot lid. Held on by a couple of screws.

Problem with gt wings are that you will need to create 12~ holes in the bootlid..

dscn4018mediumxk6.jpg

Right, I see about the mounting brackets.

Does that mean if you want to go back from a GT wing to normal spoiler you will have extra holes left in your boot?

haha ofcourse, 12 nice holes in the bootlid, not to mention the other 3 from the original spoiler.

Only option would be to replace bootlid, as the holes are too close to each other to weld. Will warp the bootlid.

Ive got a spare bootlid sitting in the garage waiting to be painted :thumbsup:

The other option you have is to add something like the night-pager extention to the standard wing. This will raise the height of the stock wing and give it a slightly more subtle GT look but not cause any issues as far as defects go. I have one and I think its tops. You can get them from Nengun but the link to them can be found here:

http://www.night-pager.com/parts/parts_etc/page_r34wing.html

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

    • 12+ months passed so they have no obligation to do a warranty claim. It leaked from the rear circuit. Front circuit was fine, but I tried many times to bench-bleed and in-car bleed (wasted 1L of Penrite racing brake fluid) to no avail. Threw my old BM50 or whatever the standard R32 GT-R BMC is, brakes went back to normal. So from my very limited anecdotal experience, I cannot recommend HFM, even though a lot of their products looks good. Just my experience (I have a genuine Nissan BM57 in a box waiting to be installed now).
    • How dare you sell your unreliable Skyline and buy a reliable, Toyota/Yamaha car with a strong gearbox, torsen LSD and Toyota reliability. At least you won't need to worry about oil pumps, big catch can, oil restrictors, blowing off power steering belts, sheering off 3rd gear, failing ABS relays/pumps, etc.
    • Hope you aren't too sore after that one, might take a day or 2 to notice yet and I guess it is a loooooong drive home. On the bright side, tube frame front end is a thing at superlap, right?
    • https://www.facebook.com/share/p/18rmVb1SKB/ 
    • The chart of front pressure to rear pressure (with one being on the x axis and the other being on the y axis) is not a straight line on a typical proportioning valve. At lower pressures there is a straight line with one slope, and at higher pressures that changes to a lower slope. That creates a bend in the line at that pressure, called the knee point. If you do not change the proportionng as the pressure gets higher, you will suffer excessive pressure (at one end of the car or the other, depending on which way you look at the proportioning action) and then get lockups at that end. The HFM BM57, from my memory of previous discussions, is based on the BM57 from a different car (to a Skyline), with a different requirement for the location of the knee point and the distribution of pressure front to rear, and so is not a good choice for an upgrade on a Skyline. Here's a couple of links to some old posts, one from here, one from elsewhere. A lot of it pertains to adjustable prop valves, but the idea is the same. There are plenty of discussions on here about this issue from al the many years of people wanting a cheap/accessible option. https://grassrootsmotorsports.com/forum/grm/learn-me-brake-proportioning-valves/236880/page1/ https://grassrootsmotorsports.com/forum/grm/learn-me-brake-proportioning-valves/236880/page1/  
×
×
  • Create New...