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Just for the record.....

$2400 isnt cheap.... considering there on special...

RPM Performance centre in adelaide do the Garrett GT30 600HP DBB with 1.06A/R for there NORMAL price of $2250.

Man i got my GT3540 1.06 for $1980...

BRAND NEW, still had Garrett factory stamping on comp cover.

http://www.rpmperformancecentre.com.au/Turbos.htm

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T3 Flange is what we want right ?? But need external gate on the manifold - means hacking existing manifiold or fabricating a new one - in which case the flange spec don't matter cause you wil be fabricating a new one anyhoo.

Sounds expensive.....

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You mean this one Jimbo ??

r33turbokit-s.jpg

That's not Merli's - I doub't Andrew would seperate :

This is the GT3040 that CGC sells - but in a package with standard (modified) manifold and external TIAL gate.

Pretty pricey - and I wouldn't use the standard manifold......

I'm a little concerened with lag - as I understand anything over about 600HP is getting up there in the lag stakes.

I suppose one could just keep the revs over 4000RPM - then no lag problem right ?

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B-man,

fyi, the two turbos which GCG list as "GSB8005A" & "GSB8006" are actually two totally different turbo cores as per Ray Hall's website. the specs are as follows;

i) GT30 (GSB8005A - 700177-0011) : Rated at 475hp

* A/R 0.70 comp housing

* 52 trim compressor wheel (TO4S - 2.17"/3.00")

* 50 lbs/min max. comp flow

* A/R 0.82 exhaust housing

* 90 trim exhaust wheel (2.11"/2.22")

ii) GT30 (GSB8006 - 700177-0014) : Rated at 600hp

* A/R 0.70 comp housing

* 64 trim compressor wheel (GT40 - 2.41"/3.22")

* 65 lbs/min max. comp flow

* A/R 1.06 exhaust housing

* 84 trim exhaust wheel (2.16"/2.36")

the 2nd unit would be what is considered the Garrett GT3040 as it uses the 64 trim compressor wheel from the GT40 family along with the A/R 1.06 exhaust housing to allow for great air/gas flow.

Any smaller exhaust housing would make it more streetable although max power would be limited due to exhaust flow restriction with the smaller housing.

cheers.

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No they don't, all Garrett GT30 turbos and higher are T3 exhaust flange.

The HKS GT3040 turbo uses a GT25 flange. Some HKS turbo come in T3, some with GT25, check it out here:

http://www.hksusa.com/categories/more.asp?id=1092

For those who care, this is the difference between HKS GT3040 and Garrett GT3040, HKS just Garrett parts mixed up in various combos, with proprietary housing designs:

HKS:

Rated at 500hp

* A/R 0.70 comp housing

* 50 trim compressor wheel (58mm/82mm)

* A/R 1.12 exhaust housing GT25 flange

* 84 trim exhaust wheel (60mm/55mm)

Garrett:

Rated at 550-600hp, depending on exhaust A/R

* A/R 0.7 comp housing

* 64 trim compressor wheel (61.3mm/82mm)

* A/R between 0.82-1.06 exhaust housing T3 flange

* 84 trim exhaust wheel (60mm/55mm)

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Originally posted by Freebaggin

For those who care, this is the difference between HKS GT3040 and Garrett GT3040, HKS just Garrett parts mixed up in various combos, with proprietary housing designs:

Check the number of blades and the actual design of the compressor/turbine. It's a bit more than just mix n' match from a Garrett spare parts bin.

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