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just looked all over it and there is no numbers unfortunately :ermm:

so why dont these housings flow if they are supposedly bigger than the .63 but smaller than the .82 in theory wouldnt that be a good happy medium between power and response?????

Im lost :wacko:

Mick I went over this before you bought the turbo. ARR is a ratio. There is no meaningful way to compare a non-Garrett GT30 based turbine housing with a genuine Garrett housing.

It will probably top out earlier than a 0.63 if it is an AVO casting.

Hang on a minute I just found the post.

http://www.skylinesaustralia.com/forums/topic/375232-garrett-gtx3071r/page__view__findpost__p__5985575

Edited by wolverine

If you just ask the supplier to swap your housing for the garrett one and pay the additional you will be fine.

Honestly, we are pretty much telling you there is no point even trying that housing and seeing how it will go. You will just void its value.

The supplier wont take it back once its used and you will not be able to sell it.

I assume you got your turbo from MTQ, just call them and explain you have changed your mind about the rear housing and would like to exchange it as it is still new and unused. Im sure he will let you send the housing back undamaged and exchange it for the garrett .82 provided you pay the cost.

If your housing is worth $400 new, and the garrett $600, pay the additional $200 then pay to send it to him and send it back to you and your laughing. No more mucking about, just do it.

but will it still make good low down grunt with the .82 cos i dont wanna have to rev its tits off it to find some fun power?

Will the E85 help with boost response?

If you just ask the supplier to swap your housing for the garrett one and pay the additional you will be fine.

Honestly, we are pretty much telling you there is no point even trying that housing and seeing how it will go. You will just void its value.

The supplier wont take it back once its used and you will not be able to sell it.

I assume you got your turbo from MTQ, just call them and explain you have changed your mind about the rear housing and would like to exchange it as it is still new and unused. Im sure he will let you send the housing back undamaged and exchange it for the garrett .82 provided you pay the cost.

If your housing is worth $400 new, and the garrett $600, pay the additional $200 then pay to send it to him and send it back to you and your laughing. No more mucking about, just do it.

Mtq are in wetherill park which is nice and close but i bought this turbo through boostn imports so i wonder if i will still have to go through him again or whether mtq would let me deal direct??? plus id need it before next weekend hope its do-able!

Would this give me my happy medium in terms of response but eliminating the boost pressure issues i might have with this bad flowing Avo housing that i have plus make more power than it??

Appreciate some opinions :thumbsup:

you need to measure your turbine wheel to see if it has a 60mm turbine or a smaller cropped turbine. if its 60mm then go to mtq and buy a .82 garrett housing to suit a gt30 and sell/return your current housing.

with a .82 IW housing i'd expect to see 1bar of boost around 3800-4000rpm on a mild rb25

Yeah that sounds alright id be happy with that thats not too shabby at all from the .82! its stock other than all the usual bolt ons and it will be on E85 too

you need to measure your turbine wheel to see if it has a 60mm turbine or a smaller cropped turbine. if its 60mm then go to mtq and buy a .82 garrett housing to suit a gt30 and sell/return your current housing.

with a .82 IW housing i'd expect to see 1bar of boost around 3800-4000rpm on a mild rb25

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