Gt30Iw Fitting Hardware , Whats Good/bad/ugly ?

[discopotato03]

GT30 time now so I need a bell mouthed dump/front and inlet pipe to connect the 4"/100mm inlet to the Z32 in the std airbox position - and retain the std recirc and breather plumbing . Black rubber/silicon joiners too if possible .

I rang Liverpool Exhausts and they have nothing off the shelf and would need car to fit , difficult since this dryer isn't fitted yet .

It sounds like Mick or Scott may be able to make these pipes up provided they have jigs to do it because you can't have my daily driven car .

I just need functional stuff that's neat and inconspicuous if possible so the changeover is quick and painless . Not going to argue over dollars because the stuff you turn out looks pretty good .

For the record the dryer is a GT3076R with the GT30 IW five bolt outlet side like an XR6 has only in 0.82AR . Externally identical to Mickos GTX3071R in every way .

If you can help me out please reply or PM , thanks in advance cheers Adrian .

Edited November 1, 2013 by discopotato03

[wolverine]

MTQ are worth a try since I am pretty sure Mick picked up his one from there.

[scotty nm35]

I have a Jig if you need an intake, can't help with the dump, unless the car is here.

[discopotato03]

Mick and Scotty have PMs .

I've looked into T3 spacer plates and most are 10mm though some are 20mm . To cover all bases is the thicker one needed when using larger compressor housings ie the 0.70 T04S ?

Cheers A .

[scotty nm35]

Or two thinner ones and 3 gaskets, or simply weld a few 10mm flanges together.

[GTScotT]

Doesn't it need to move roughly 12mm? Whats the go here?

Disco we better see a full write up on the differences once you're done

[scotty nm35]

The GTX35 I fitted to a 33gtst stock manifold used a 25-30mm spacer, but it was external gate. Not sure the actuator would fit on an internal gate version.

[discopotato03]

Seems I can't buy off the shelf a dump/front for my R33 . The only dump I know of for the IW GT30 housing is GCGs one though I prefer a bell mouth one .

What results have people had with the GCG dump ?

Cheers A .

[scotty nm35]

Why would you want an off the shelf setup anyway? Custom fabricated stainless is the go for best fitment and powerz.

[iruvyouskyrine]

GT30XX IWG need to be spaced out 15-16mm from memory. This sits the compressor off the exhaust housing and gives the most amount of room for the actuator.

[scotty nm35]

I had a good look at a certain white 34 getting a GTX3076 fitted at Edge Motorworks yesterday. There was plenty of room for a 30mm spacer, but the 20mm one looked to work perfectly.

[steve200b]

Mine fitted well with a 10mm spacer. The dump was only 45min work to finish

[discopotato03]

T3 spacers are available in 10 13 16 and 20mm thicknesses , 20 is what I'll try to make sure a T04S housing clears if I ever had to use one ie HTA76 etc .

Sonic or GCG seem to have everything except a bell mouthed GT30IW dump pipe so that will have to be made up to suit .

I know people sometimes go big in the tube size but I reckon 3" should be good enough for 300-330 wheel wasps .

I'm going to use the existing coolant and oil fittings from the GTRS kit .

I'm keen to see how the mid trim GT30R goes , once you make the jump to T3 flanged GT30 based turbos it opens up all sorts of possibilities you don't get with GT28 based ones . This is not to say that GTRSs are useless on RB25s and they are a very easy upgrade on a standard engine/car . Not the tool of choice if you want to double the engines output but lots better than the standard ceramic Hitachi turbo .

Anyway someone here , checkbuzz I think , claims his 0.82 52T GT3076R boosts pretty much like his GTRS did but made more power everywhere . That was on an unopened 33 25 from memory and burning PULP .

If Scotty can tune up maybe 320 and have it drive as well or better than it does now I'll be real happy .

Cheers A .

[wolverine]

Checkbuzz either had an issue with the setup or is looking at a dyno sheet. The GT-RS is much more responsive than a GT30 based turbo but doesn't go close to have the legs...as you would expect from looking at the turbine.

[discopotato03]

Yeah looking at them the GT30 hot side is considerably larger . I wouldn't have thought the 52T cold side would make a huge difference spool wise over a 56T but time will tell the difference between it and the GTRS .

Today I bought the manifold and dump studs/nuts and most of the gaskets and copper washers . GCG doesn't have the 20mm spacer available ATM though they stock their GT30IW dump pipe . Its separate dump tube could be larger and formed to a more useful shape at the turbo outlet flange . I looked at pics of XR6T dump pipes and lots of those are made the same way .

A .

[Lithium]

Looking forward to seeing how it goes, and how you find it. There is no way it is going to have the low down punch of the GT-RS - however it should be quite liveable, considering a 56T is. Just a different kind of beast, and one which is much nicer suited to the engine it is on.

[discopotato03]

Most people seem to think that GTRSs are a 250+ KW PULP turbo and I think the E70 allows me to keep the boost and timing up which made 271 at the rollers .

To make more and have the engine a bit more free spinning means more turbine and housing so GT30 hot side is the way to do it . Lith we know that the GT37 compressors are good but later designs are creeping ahead . The 52T GT37 wheel in theory pumps right about what I want which is in between what the available GTX ones do . Arguably a HTA GT30 may do better all round but I own this turbo so why not use it . When tuned and I get to fiddle with the low load numbers I can draw my line in the sand and know if its just right - for me .

Will post up as it happens , cheers A .

[Lithium]

250kw+ PULP is pretty ambitious really - as you can probably tell by "only" making 271kw using E70 etc.

Agreed, HTA would be the way to go if you were in that position but having a 52trim there and knowing you won't be looking for insane power means there is no justification in a big change - any ETA for this?

[too_much_boost]

I have a 30mm T3 spacer if you were interested. I didn't end up needing it. GCG bent me over for $70 for it from memory

[discopotato03]

I prefer a single 20mm T3 spacer if anyone knows of any in Sydney , GCG Sonic and Liverpool can't supply ATM .

The studs I have are 41mm so around 20 the limit allowing for the turbo flange and nuts .

Does anyone have a 20mm T3 spacer they can sell me , prefer one 20 to two 10s .

Timeline probably a week after I have all the bits .

A .