Does anyone know of an Fj running a GT3071R or 3076 with internal wastegate?
I'm looking to buy one and run up to 18psi with it.
Was wondering if there would be any dramas or limitations with using the int gate.
Trying to do a budget build and the external gates arent cheap with additional manifold costs etc aswell...
Any info appreciated.
Billy.

i would be looking at this turbo also, any suggestions? as will not be ready to put external gate or get custom manifold yet.
Cheers nick

The GT3071R-WG is not much chop on anything . The cropped GT30 turbine is ok in HKS's own housings , which are GT30 housing based , but a nortorious flop in bored out GT28 turbine housings . The 3071R-WG cartridge is basically what HKS calls GT2835 ie cropped GT30 turbine with 71MM GT35 compressor .
The other problem is the T28 flange on the "WG" version because it has that GT28 turbine housing . FJ's need a T3 flange .

Garrett is comming to the rescue with a T3 flanged GT30 integral gate turbine housing in .82AR ratio . Its release has been pushed back to July I'm told . This housing on the real GT3071R or the real GT30R (numerous bad variations of both) or the HKS GT3037 in 52 comp trim would be good on the std exhaust manifold . Bolt on options that work .

Thanks for the reply.
As the fj wont be using the std exhaust the T25 flange will not be an issue as the manifold has to be custom made anyhow.
Just wondered essentially if i could save $500 or so by getting a GT30 with an internal wastegate.
May hang out for this new GT30 T3 turbo but if not, what is the 'proper' part numbers or best models of GT3071R and GT3076R to use with an external gate and .85 turbine housings?
Thanks again for the reply DISCO.

p.s. is ebay as good as anywhere to buy these turbos or is GCG etc better price, etc...

Garrett GT30 turbine housings are only available in .63 , .82 and 1.06 AR ratio non gated . I think the wastegated one will be a .82AR .

If they say .64 or .86 they are GT28 housings .

I would only use the T25 flange if I wanted to use the GT28RS (GT2860RS) . The std exhaust manifold is not as bad as many think but needs integral waste gate turbine housing .

typo: should be .82

the gt3071 is on the garrett website saying with a T3 flange and a 4 bolt exit pattern - is this yet to be released and just teasing us?

It is available overseas , don't know if Garrett Australia bring them in but others can . If you find the right one in the catalog it tells you that they only sell it as a cartridge to which you add optional compressor housing and turbine housing kits . ATP Turbo (US) sell it as a complete unit as no doubt GCG could as well . Its cartridge number is 700177-5023 , If it says anything else its not the right one and won't work properly like the correct one does .

The cropped turbine version , WG type or HKS's 2835's only work properly in GT30 based turbine housings which Garrett don't manufacture for this turbine . This is why HKS had to get their own made for their GT2835 series turbos . In any case the Garrett marketed "WG" version only offers the 71mm or GT35 compressor in 56 trim where HKS offers 48 , 52 and 56 trim versions of the GT2835 . Turbos get laggier as the compressor trim increases - typically Garrett only offer the largest trim and laggiest version in the propper and "WG" versions though the real one suffers less because it uses the slightly larger full sized GT30 turbine .

Notice how the pretty blue tag on HKS turbos says "Power and Response" , this is because they try to address the turbine/housing issues and optomise the compressor/trim so that they make torque in the feel good part of the engines speed range . They also try not to get high turbine inlet pressure so that their turbos can work in higher pressure ratio (boost) ranges without killing your engine . You can achieve it as well by looking into the wheel and trim sizes and using only the best combinations . Turbos like the GT28RS and GT3071R are good combos and others can be "doctored" if you deal with the right people . If you buy new your are paying for one turbo not two and while a little more expensive than an off the shelf Garrett , generally cheaper than a High Kost Spec turbo .

Many people fall into the trap of trying to save money by grabbing a GT30 with an inbuilt wastegate.
There is no such thing as a genuine GT30 wastegated turbine housing. If you see any such thing advertised they are cropped GT28's or machined out old style T3 housings. All genuine GT30 turbine housings required an external wastegate.
If you buy one of these be prepared for a turbo that just doesnt respond as it should.

This thread has some false information.
Both Precision Turbo and ATP Turbo in the US cast propper GT30 internally wastegated housings in a range of sizes.

Yes the above post is correct. I should have been more specific in my post regarding GT30 internal wastgates.
I was referring to genuine Garrett turbine housings. These are the ones that you often find that are machined out T3's or GT28 types.

I should chime in because I think I made the comment .

Firstly Yes ATM Garrett (who design and assemble all their GT BB turbos and cartridges) only offer T3 flanged GT30 and GT35 turbine housings non gated . The XR6T's GT3540R uses a turbine housing to Fords spec but not of Garrett manufacture .

Garrett has been promising integrally gated GT30 and GT35 turbine housings for a couple of years and latest news is available late July 06 .

There is actually a couple of good performance T3 flanged GT30 turbine housings both from HKS . They are intended for their GT3037 Pro S which uses the identical cartridge to Garretts GT30R/GT3076R turbo number 700382-12 cartridge no 700177-0007 or -5007 . They are available in .68 or .87AR ratio but require HKS's unique dump pipe or a similar copy . Not cheap but you could virtually bet that they perform better than any Garrett housing of similar AR because they are a dedicated high performance petrol item not a generic diesel design . The waste gate flat valve and exhaust vent path are very different to any Garrett integral housing .

If interested contact GCG , Brett used to keep some of HKS's turbine housing range and may have or be able to get these ones .

ATP have one on offer thats very similar to what the Americans call their 5 bolt T3 housing . The waste gate flap plate is pretty restrictive so not my no 1 choise . I've not seen PTE's (Precisions) housing so cannot say .