600+hp

iTrader: (5)

1) Is the turbine housing of the old AMS 50 trim from PT the same size as the 30R Garrett GT of the same A/R ?

2) Will the current Garrett 5 bolt "Ford style" housing work with the first gen AMS turbo kit ?
http://www.treadstoneperformance.com...g+for+GT+Turbo

I currently have the old 50 trim AMS turbo kit and would like to swap turbo to an HTA 3076. I understand I can use my 50 trim turbine housing on the HTA, however I'd like to end up with about if not the same exact A/R ratio, i.e not loose a lot of the performance.

Any help will be much appreciated.

240Z TwinTurbo

iTrader: (25)

If you are asking if you can purchase the same type of housing then the answer is likely yes. If you need a 5-bolt housing I bet you can have it cut for the GT30r turbine wheel.

jid2

iTrader: (62)

You can use the turbine housing from your AMS 50 trim on the the HTA3076. Should be no problem.

600+hp

iTrader: (5)

Back when AMS offer the 50 trim, PT was still using Garrett casting for their housing. Now they said the're doing it in-house so they do not and cannot offer the old style Garrett based housing anymore.
The big question is, is the old 5 bolts housing from PT interchangeable with that of Garrett 5 bolts "Ford style" currently available.
At this point I could not find anybody selling the old style Garrett based 5 bolt PT housing.


I realized that but that is not my question. I wanted to know if they are of the same size for a given A/R so that if I use the .63 A/R 50 trim housing on the HTA 3076 I'll end up with an HTA 3076 with an A/R of .63.

To put it another way, are the turbine wheel of the 50 trim the same size as that of the 30r garrett ? That's what I should have asked in the first place.

240Z TwinTurbo

iTrader: (25)

The wheels are different assuming the 50-trim used a standard stage III turbine wheel. If you were running a 0.63 a/r and liked it you should probably stick with the same a/r for the GT30r turbine wheel. It will likely be the same turbine housing just cut for the larger wheel.

600+hp

iTrader: (5)

Info are hard to come by for the 50 trim but like you said the turbine is most likely a stage three wheel in which case the specs (of the current available stage 3) are,
65mm exducer
57mm inducer
Wheel diameter - unknown
For the Garrett 3076r they are
76mm exducer
57mm inducer
Wheel diameter of 60mm

Looks like there's quite a bit of difference, I'll probably have to hog out the 50 trim housing quite a bit to maintain the same A/R of .63

240Z TwinTurbo

iTrader: (25)

You need to source that housing cut for the GT30r turbine wheel from ATP Turbo. I see they have them in 0.63 a/r and 0.82 a/r for $249.

600+hp

iTrader: (5)

Thanks for all your help, looks like that's what I'm going to do. I think I'm going to stay with the .63 a/r