Jump to content
SAU Community

Recommended Posts

Yes, Discopotato, you are right. Later I thought my comment didn't read well.

I asked whether the GT30 housing came as an unmachined or semi-finished blank that required finishing before fitting up. If that were the case (and doesn't seem to be), then the possibility could exist.

How then, does Garrett get the 56.5mm wheel mated up to the internally gated housing that they call a GT30 that is evidently very different to the externally gated GT3076 with its 60mm wheel? I say "evidently very different" because of their vastly differing flow/efficiency maps and the obvious different method of turbine speed control.

Do they both fall within the UHP family, and where is the information about that and NSIII?

Hopefully I will get it soon...

BTW I am going to kick off a thread about interpreting turbine maps just to keep the brain ticking over.

cheers

The GT30 and GT28 exhaust housings are very different internally both being based around their native turbine major diameters ie 60 and 54mm . They modified or cropped the 60mm to the maximum size that would fit in an overboared GT28 housing and came up with 56.6mm . The Hub is too big and heavy for the shortened blades and the blade form is not the best in shortened form . The GT28 nozzle form was designed for GT28 turbines and so not optimised for the diametre of the hybrid . Turbine efficiency suffers and shows up as lag .

  • 4 weeks later...

Great result quincy777, and right on target.

Couple of things I would like comment on if possible:

what sort of flange adaptor did you fabricate, and how did the turbo - suspension tower clearance work out?

what did you do for a suitable dump pipe

what is the boost threshold point (ie when does it go from vacuum to pressure)

how quickly does it build boost (once on boost)? Looking for comment about whether the power is controllable

cheers

Dale

Nice results for the 3071. When do you get full boost? Is it internally gated? Like the 3071-WG on atpturbo.com?

I get a bar of boost by 4rpm, internally gated and on standard manifold. Bought it from horsepower in a box. Lot's of fiddling and adapting with flanges, lines and crap but seems a great option..

I am planning to run one of these once I put some money aside (currently doing some serious body work!). From what Ive read around the place the GT3071R has almost the same spec front wheel/housing as the HKS GT2835ProS turbo. The main difference with the current breed of GT3071R is that theyre very common with a T25 Int Gate rear housing. Its been discussed around the place that getting the GT3071 with a 90 trim exhaust wheel and a HKS T3 .73 a/r exh housing is the way to go, as Garrett only offer a .6x and a .8x size in T3.

Housings are only USD$300 from HKS direct.

JK

  • 1 month later...

I've been thinking of putting a Garrett GT3071R on my RB20, do the RB20 manifold take T3 then?

Is this the turbo you lot are talking about? http://www.atpturbo.com/Merchant2/merchant...tegory_Code=GRT

was going to order it with 3in outlet ect.

But didn't know what you guys would surgest for A/R, i think i got the undertstanding that .82 is the one to go for?

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

    • By popular demand.. it was a coil. Got my hands on 1 new OEM coil, replaced with the one that made the less noise difference when I unplugged it while the car was running and started the car up. No stutter and the engine light was gone. I guess I’ll buy the other 5 they have lol
    • No, code 21 is very straightforward. It can only be the things described in that diagnostic flow. In fact it has no way of knowing that the spark plug resistance is out of spec.
    • Hi, SteveL Thank you very much for your reply, you seem to be the only person on the net who has come up with a definitive answer for which I am grateful. The "Leak" was more by way of wet bubbles when the pedal was depressed hard by a buddy while trying to gey a decent pedal when bleeding the system having fitted the rebuilt BM50 back in the car, which now makes perfect sense. A bit of a shame having just rebuilt my BM50, I did not touch the proportioning valve side of things, the BM50 was leaking from the primary piston seal and fluid was running down the the Brake booster hence the need to rebuild, I had never noticed any fluid leaking from that hole previously it only started when I refitted it to the car. The brake lines in the photo are "Kunifer" which is a Copper/Nickel alloy brake pipe, but are only the ones I use to bench bleed Master cylinders, they are perfectly legal to use on vehicles here in the UK, however the lines on the car are PVF coated steel. Thanks again for clearing this up for me, a purchase of a new BMC appears to be on the cards, I have been looking at various options in case my BM50 was not repairable and have looked at the HFM BM57 which I understand is manufactured in Australia.  
    • Well the install is officially done. Filled with fluid and bled it today, but didn't get a chance to take it on a test drive. I'll throw some final pics of the lines and whatnot but you can definitely install a DMAX rack in an R33 with pretty minor mods. I think the only other thing I had to do that isn't documented here is grind a bit of the larger banjo fitting to get it to clear since the banjos are grouped much tighter on the DMAX rack. Also the dust boots from a R33 do not fit either fyi, so if you end up doing this install for whatever reason you'll need to grab those too. One caveat with buying the S15 dust boots however is that the clamps are too small to fit on the R33 inner tie rod since they're much thicker so keep the old clamps around. The boots also twist a bit when adjusting toe but it's not a big deal. No issues or leaks so far, steering feels good and it looks like there's a bit more lock now than I had before. Getting an alignment on Saturday so I'll see how it feels then but seems like it'll be good to go       
×
×
  • Create New...