Notices
Series I Major Horsepower Upgrades This is the place to discuss Super Chargers and Turbos, Nitrous, Porting, etc

Need help/lessons/advice for picking out a turbo

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 12-13-2010 | 01:58 AM
  #26  
paulmasoner's Avatar
Asshole for hire
iTrader: (1)
 
Joined: Jun 2006
Posts: 3,214
Likes: 3
From: Colfontaine, Belgium
I was doing that in 2/3 gear well before the WG opened...
Old 12-13-2010 | 03:04 AM
  #27  
auzoom's Avatar
Hmmmmmm.........
 
Joined: Mar 2005
Posts: 3,564
Likes: 6
From: Melbourne, Australia
Originally Posted by rotarenvy
the greddy is only a T25 so the housing is bigger than that. however I think AUZOOM is using a T3582 variant on a low mount manifold. from what he has posted it was probably repackaged by the people who installed the turbo for him.
I cant guarantee it but yes, my belief is that its the 3582. If someone can give me something to look for I will give it a go.

It fits, the issue is that its pretty close to the firewall so be prepared to put heat shield on the firewall to try and redirect some of the heat, or try and find a way to direct some air flow around there. Having said that, I guess the closer to the engine the more room but then you are bringing the heat to the engine.

Your RPM requirements are fine. Externally wastegate it if you can.

HTH

Andrew
Old 12-13-2010 | 03:21 AM
  #28  
MazdaManiac's Avatar
Banned
iTrader: (3)
 
Joined: Oct 2003
Posts: 16,386
Likes: 26
From: Under my car
The only turbine housing that will fit down there is the GT30/t28 frame.
That means you are limited to the GT3071/GT3076 - the latter only if you have a turbo builder that can fab the housings.
A GT35 turbine will not fit, regardless of what you do with the motor mount. Its diameter is larger than the available space.
I suppose you could replace the floor pan...
Old 02-16-2011 | 08:37 PM
  #29  
auzoom's Avatar
Hmmmmmm.........
 
Joined: Mar 2005
Posts: 3,564
Likes: 6
From: Melbourne, Australia
Originally Posted by MazdaManiac
A GT35 turbine will not fit, regardless of what you do with the motor mount. Its diameter is larger than the available space.
I suppose you could replace the floor pan...
From what I understand, the Compressor housing is replaced with one that gives more clearance but retains the same wheel.
Old 02-16-2011 | 11:17 PM
  #30  
MazdaManiac's Avatar
Banned
iTrader: (3)
 
Joined: Oct 2003
Posts: 16,386
Likes: 26
From: Under my car
Originally Posted by auzoom
From what I understand, the Compressor housing is replaced with one that gives more clearance but retains the same wheel.
The compressor and the turbine are two separate pieces of the turbo.
Old 02-17-2011 | 04:15 AM
  #31  
rotarenvy's Avatar
Registered
 
Joined: Feb 2004
Posts: 1,802
Likes: 10
From: QLD .au
so can you machine a GT30 turbine housing to accept the 68-84 gt35 wheel?
Old 02-17-2011 | 04:47 AM
  #32  
auzoom's Avatar
Hmmmmmm.........
 
Joined: Mar 2005
Posts: 3,564
Likes: 6
From: Melbourne, Australia
Originally Posted by MazdaManiac
The compressor and the turbine are two separate pieces of the turbo.
I understand that but am missing the point you are making. Is that its probably the turbine housing not the compressor housing that is being changed?

EDIT: Sorry I see what you are saying, the turbine diameter is to large to fit there. So my question is, whats there that makes you say that? And thats a question out of pure ignorance not being a Smart ****.

Last edited by auzoom; 02-17-2011 at 04:59 AM.
Old 02-17-2011 | 07:18 AM
  #33  
Dirt_Nasty's Avatar
Filth in a world of Clean
iTrader: (2)
 
Joined: Mar 2010
Posts: 517
Likes: 0
From: Somewhere in 3rd gear
subbed.
Old 02-17-2011 | 10:33 AM
  #34  
paulmasoner's Avatar
Asshole for hire
iTrader: (1)
 
Joined: Jun 2006
Posts: 3,214
Likes: 3
From: Colfontaine, Belgium
Originally Posted by auzoom
. So my question is, whats there that makes you say that?
it's been over 2 years since i've messed around down there with a turbo, but the floor pan is whats in the way. if you were to alter it, you would have more room, but not much
Old 02-18-2011 | 07:46 AM
  #35  
carbonRX8's Avatar
Thread Starter
U-Stink-But-I-♥-U
iTrader: (1)
 
Joined: Mar 2005
Posts: 2,004
Likes: 1
From: 12 o'clock on the Beltway.
Originally Posted by MazdaManiac
The only turbine housing that will fit down there is the GT30/t28 frame.
That means you are limited to the GT3071/GT3076 - the latter only if you have a turbo builder that can fab the housings.
A GT35 turbine will not fit, regardless of what you do with the motor mount. Its diameter is larger than the available space.
I suppose you could replace the floor pan...
That is not true. That turbine fits. On the turbo that I currently have in my possession (given that I paid for it. Generally, you receive what you pay for) it is the compressor (non-Garrett) that is tight. This is, of course, not using the greddy manifold.
Old 02-18-2011 | 05:46 PM
  #36  
rotarenvy's Avatar
Registered
 
Joined: Feb 2004
Posts: 1,802
Likes: 10
From: QLD .au
^ exactly. most people are trying to use the greddy manifold for simplicity.
Old 02-18-2011 | 11:45 PM
  #37  
MazdaManiac's Avatar
Banned
iTrader: (3)
 
Joined: Oct 2003
Posts: 16,386
Likes: 26
From: Under my car
Originally Posted by carbonRX8
On the turbo that I currently have in my possession ... it is the compressor (non-Garrett) that is tight. This is, of course, not using the greddy manifold.
Uh, yeah.

If you are fabbing a manifold from scratch, there are some "special sauce" versions of the 35r which can be cobbled together that will fit.
Old 02-19-2011 | 12:02 AM
  #38  
auzoom's Avatar
Hmmmmmm.........
 
Joined: Mar 2005
Posts: 3,564
Likes: 6
From: Melbourne, Australia
Originally Posted by MazdaManiac
Uh, yeah.

If you are fabbing a manifold from scratch, there are some "special sauce" versions of the 35r which can be cobbled together that will fit.
Rights so you are saying that the GT35 wont fit with the Greddy manifold? Well I have a custom manifold.

Last edited by auzoom; 02-19-2011 at 12:16 AM.
Old 02-19-2011 | 12:14 AM
  #39  
auzoom's Avatar
Hmmmmmm.........
 
Joined: Mar 2005
Posts: 3,564
Likes: 6
From: Melbourne, Australia
Originally Posted by paulmasoner
it's been over 2 years since i've messed around down there with a turbo, but the floor pan is whats in the way. if you were to alter it, you would have more room, but not much
My floor pan is intact, but it is extremely tight. To the point I have to install some heat shielding there.
Old 02-19-2011 | 01:53 AM
  #40  
rotarenvy's Avatar
Registered
 
Joined: Feb 2004
Posts: 1,802
Likes: 10
From: QLD .au
I'd like to see around 9psi boost around 3000rpm without sacrificing the top-end.

there are turbo suppliers that list the gt3071 compressor and t25 housings as packaging options for the GT3582.

if you stuff a gt3582 core into these small housings how will it affect the spool/flow potential?

can you compensate for the small turbine with a big waste gate to reduce back-pressure to improve the top end?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
tbiggybig
RX-8 Discussion
35
07-14-2022 07:14 PM
Hunterkelley24
Series I Engine Tuning Forum
14
06-14-2022 09:32 AM
fourwhls
RX-8's For Sale/Wanted
7
02-20-2019 06:16 PM
MolecularConcept
RX-8 Discussion
11
09-29-2015 10:21 PM
xAgyex
RX-8 Parts For Sale/Wanted
0
09-28-2015 09:54 AM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -5. The time now is 05:29 PM.