Jump to content
SAU Community

Recommended Posts

Are the tomei REAL 3 inch dumps? That´s the only one I could find where you can see the custom dump pipes...but it was before the GTX came in.

post-30656-0-40974600-1352450857_thumb.jpg

Series 1 are 72 mm internally.

Series 2 are 68 mm internally.

I have to measure again, I think I used 80mm pipes and bends, so 76mm inside diameter for each turbo until the cat converter, then 88.9x2mm to the back...as the cat is the biggest restriction anyways.

That´s why I used two catalic converters on the GTR, and after the middle box there´s a 114.3x2mm pipe towards backbox + end, as this was the biggest possible diameter between rear axle and LSD :D

post-30656-0-56654600-1352495512_thumb.jpg

Edited by AndyStuttgart

I can prove otherwise on my own car. do a bit of clearancing with a die grinder, wrap the dump pipe, done.

Give it 18months and then see.

I killed 2 silicone joiners on a low mount setup /w heat shielding over the course of 2 years simply due to radiant heat.

Sean has certainly done it right the first time. I'd never silicone in that area again.

  • 3 months later...

post-12712-0-67065700-1361540869_thumb.jpg

Spat a bolt out of the turbine housing on the rear turbo, so exhaust leak...

My fault as I only used bolts and washers to attatch the rear housings, as they don't come with attachment hardware.

Permanent fix this time with the correct half retainers from some other turbo's in the shed.

Next time I go on a dyno, I'll put up a sheet.

Yeah do everything myself at home including engine builds lol....

Yep twins are fun, 6th time ever on GTR's now....probably 4-5 times with engine in the car, stubby ratchet ringies are your friend :D

here are some pics of a local newcastle engine builder & his latest project.

gtx snails with a few other goodies...take note of the intake plenum & flux capacitor. absolutely awesome fabrication work!

post-8728-0-34142400-1361587334_thumb.jpg

post-8728-0-83025700-1361587341_thumb.jpg

here are some pics of a local newcastle engine builder & his latest project.

gtx snails with a few other goodies...take note of the intake plenum & flux capacitor. absolutely awesome fabrication work!

I can see one of the goodies from here... that sneaky Newcastle fella!

Had a play with a nice GTR with a set of the GTX's (modified -5 front covers) last week we ran out of spark (see dip) @ 460rwkw on E85 @ around 23psi definitely good turbo s even with the hybrid front cover..

post-34927-0-77521600-1361870606_thumb.jpg

Had a play with a nice GTR with a set of the GTX's (modified -5 front covers) last week we ran out of spark @ 460rwkw on E85 @ around 24psi definitely good turbo s even with the hybrid front cover..

What size wheels? 60, 63 or 67's?

Had a play with a nice GTR with a set of the GTX's (modified -5 front covers) last week we ran out of spark (see dip) @ 460rwkw on E85 @ around 23psi definitely good turbo s even with the hybrid front cover..

Yeah what size? And what sort of response?

Edit: see the graph now

Edited by jangles

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

    • Some of them keep working fine. 9 out of 10 of them end up causing an absolute misery bleeding the system and get thrown on the workshop floor in a tantrum and never thought about again because they were never really needed and just added crap to the car that we could have done without. Same-same with HICAS, A-LSD, and various other stupidities that over eager 10x engineers thought we had to have.
    • Not required but appreciated. Super Coppermix Twin even the non-competition model feels like the pedal is noticeably heavier than stock which was pretty well judged IMO. I'll be swapping in the Nismo operating cylinder soon to see how that feels.  Personally I haven't felt anything that justifies replacing the damping loop, at least compared to more modern stuff where the clutch delay valve is actually quite noticeable.
    • He made that comment in my thread - In my case the vents ARE to lower engine heat, when the car is not moving, which is the only scenario I have heat problems with the aircon on, sitting in traffic, on 40C+ days. I can't imagine a scenario that this NC needs any at this point in time. I do not know if it will actually make my cooling when the car is MOVING worse, and I sincerely hope that won't be the case. If it does, well, um, f**k.
    • Nice, thanks. Thats why I was asking, there'd been a fair bit of discussion in the E90 world about vents and where it makes sense to put one (ie, over the filters is not great as that is inline or slightly behind the struts and in higher pressure area). I struggle with air flow and pressures. It sill weirds me out that a radiator in the boot can work. 
    • Neither really Vents, when located in the right place, will lower the engine bay "pressure", as air has a path to escape, thus lowering the engine bay pressure, thus.....improving the efficiency on the coolant stack (read: IC, condenser, radiator) This is why the Blits vented bonnet on my 33 worked so well, the vent was in the front 1/3 of the bonnet, which put it right after the radiator  If the vents are to far back toward the windscreen, which is a high pressure zone, it can actually force air into the engine bay, causing higher pressure and effectively loosing efficiency on the cooling stack, like the fab of raising the rear of the bonnet, which does allow heat to escape, but only when the car isn't moving  There's heaps of cool "fluid dynamics" info out there, but, I'll attach a video of a 'Merican joint that focuses on "Miatas" as I found it when looking into vents for mine, they explain it way better than me  
×
×
  • Create New...