Jump to content
SAU Community

Recommended Posts

Hi Everyone. :action-smiley-069:

Just wondering if their is any interest for Custom Aluminium rear diffusers for r34 GTRs.

I've gone through the whole process as im sure many of you have.

I have looked everywhere yahoo auction on SAU and can find any OEM rear Diffusers they're either to expensive 2k+ or they have been scooped up by a lucky member that was first in line.

So ive decided to make my own Rear diffuser out of aluminium. The Material thickness will be 2.5mm thick and the plastic fins will also re-made and replaced as alunium units.

The whole unit will be laser cut and hopefully be the same weight as the OEM one. Ive done away with the centre scoop as the wing provides enough down force and im hoping to achieve better air flow under the vehicle.

Ill be posting pics in a few days of the final Result :no:

Ross

Link to comment
https://www.sau.com.au/forums/topic/398748-gtr-34-rear-diffusers/
Share on other sites

The first Concept one will obviously be alot more expensive because of the labour involved and all the CAD design but the Suppliers have Quoted around the $900.00 mark new including fins.Terry the Diffuser on my Gtr is cracked and that why i would like to get rid of it the plasic fins and Discolouring of the Carbon fibre Clear Coat isn't esthetically pleasing to me. Think brushed aluminium Would Suit!

Im keen to see your results for this. I created an autocad drawing a couple of months ago to do just this, after seeing what was done on the powertune GTRB28 car.

I took a little inspration from the ARC ones as well to make it a little more racey looking. Should be interesting to see what yours turns out like.

Sorry to hijack the thread....

I received my new diffuser on Friday - pics below, cost me in total $2,100.00. The item itself was $1,200.00 and customs crap / GST etc was $881.00!!! Took just over 6 weeks from order to pickup. Dealing with shipping companies was a major pain in the ass!

http://www.ioffer.co...board-202858506

stone_carbon_3.jpg

stone_carbon_4.jpg

stone_carbon_5.jpg

stone_carbon_6.jpg

stone_carbon_7.jpg

Edited by 32godzilla

Anthony - fit was spot on, to the millimetre. I think it's a little thinner than the OEM one though, I'll check it against someone elses when we catch up next. But overall very happy.

Greatly appreciated mate.

Ps your car looks great, mnp is the color I wanted ha

Anthony - fit was spot on, to the millimetre. I think it's a little thinner than the OEM one though, I'll check it against someone elses when we catch up next. But overall very happy.

Looks exactly the same as on my 1st R34 GTR

Yes the C/F is a fraction thinner - but not at all flimsy.

Peter of Bodyformaero had the diff bracket made up for me, because the kit didn't include that.

  • 2 weeks later...

Making a front to back verson for gtt in carbon with quick release fasteners around parts that need serviced and jack points

and kevlar in strike points in front and rear so they wont crack , tested with ballpeen hammer not even a spiderweb on the clear

And of course vents for things that need it

and some other carbon kevlar goodness

Just saying

  • 1 month later...

Different subframe on the gtt, so they apparently don't fit straight up. I'm not sure what modifications would need to be done to fit.

Mine is currently off my car if you want to check

Edited by wedge_r34gtr

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

    • Harness is for a s1 Rb25det, and it is engine and lower harness.  the old harness had broken off plugs and was in very rough condition/exposed wires and splices etc. it is not able to be put back on the car, I could visually inspect to see if they had rewired any pins on the ecu plug. The fuel pump definitly isn’t turning off it’s an external pump and very loud you can hear it. Will look at the other harness tonight, am also going to pull the fuel rail and watch the injectors spray, will update here with what I find. Pretty sure at this point it has to be something to do with injectors because car will fire up on starting fluid and cas is clicking the Injectors. Fuel pressure is steady 43psi 
    • Check the injectors flow evenly, and are actually flowing what you and the ECU think they should be flowing. If it's starting up on starter fluid, you have a fuel issue. Is it possible under cranking your fuel pump is turning off?   The harness you replaced, is that the whole engine harness? Do yourself a test, and drop the old harness on and plug it into the Z32 ECU. It's possible they've wired things different. From memory S1 to S2 is different in RB25 and you may have a wrong loom
    • I haven’t pulled the injectors to watch them spray yet but they are clicking from the cas and all of the spark plugs are wet with fuel. I’ve thought the cylinders were being flooded from the beginning and was hoping fuel pressure would fix it. Tonight I am going to pull the rail and watch the injectors spray. Don’t know how to test/diagnose if the plugs are firing in correct sequence but that should be a timing thing and as far as timing goes my car still has the half moon for the cas can only install it 1 way. And my mechanical timing is 100% correct I posted photos above. Confirmed with the balancer on and off. 
    • I checked spark on all cylinders and they all visually have spark with the plug pulled and grounded, but plug 1 is the only one that fouled. This was a running swap that blew up and was rebuilt by a machine shop, put a new wiring specialties harness and did all gaskets, studs, and bolts while it was out.  compression is 135-150 across all cylinders. Aside from that from my understanding with the z32 ecu and maf the car should start regardless. The wiring for TPS and the dual 02 sensor/ dual knock sensor stuff shouldn’t actually stop the car from starting or even running well, (just slightly rich)  they just give fault codes. Car supposedly is supposed to start as long as you have z32 afm and ecu with the nistune base map and that’s info coming from a well known and trusted tuner who does a lot with SR/RB (Rsenthalpy). After more trouble shooting today where I’m at right now is that the cas is sending signal to the injectors they click while spinning the rotor, Fuel pressure is now set at 43psi, all cylinders have good compression and all of the plugs looked great (just wet with fuel) except for cylinder 1 which was very black (cylinder 1 has 150psi compression). all of the coils generate spark if pulled out and grounded out on the head. On the fuel pump car just pops into the exhaust. On starting fluid car will fire off. Hard to tell if all cylinders are firing off but definitley a couple. sounds like all of them but it’s only for 3-5 seconds hard to tell. 
×
×
  • Create New...