Joined: 16 Oct 2007
Posts: 16
Location: OC California
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Okay every one we have a chance to compare 2 Subaru turbos that are;
1. Stock location bolt on turbo.
2. Will also allow for the continued use of the top mount intercooler.
3. The production of over 400 horse power is easily attainable.
4. BALL BEARING
5. QUICK spool on the 2.5 block
Lets start out with a look at the each turbo and the bits that come with each one.
First off the ATP Garrett GT Ball Bearing GT3071R turbo.
This Turbo apparently includes alot more bits then the Blouch. Such as
1. Oil Banjo fitting
2. Steel braided oil feed line
3. Oil return line with clamps
4.Inlet adapter from 3" to 2.75" to keep using the OEM size inlet or
aftermarket one removing the worry of having to buy a new 3"
5.Water line fittings and washers
6.New charge line to the TMIC with boost line nipple fitting (-1 for ATP)
Now lets look at the Blouch dominator 3.0R turbo.
This Turbo includes a little less bits the the ATP turbo.
1. OEM replacements gaskets
2. Steel braided oil feed line
3. 2 stickers
4. Boost control fitting already on the compressor housing of the turbo ( +1 for Blouch)
Now lets take a look at the turbos side buy side from all the angles and we'll let you see the differences.
On the left we have the ATP GT3071R and right Blouch dominator 3.0R turbo
The ATP has a polished compressor housing, the wastegate actuator is higher and the
line port is facing up.
The Blouch has a noticeably bigger inlet port the water lines are stock in respect. The compressor
housing it self is bigger as well, along with boasting a boost charge nipple.
In this top veiw we can see a glimpse of the differences in the hot side of each in side
and that the ATP has stud bolts with washers and brass nuts.... while the Blouch has none.
looking under the turbos we can see the uppipe flange and the sizes in the ports are different.
At this time the ATP port seems close to a stock size ( unported ) while the Blouch is ported.
Also notice that the ATP GT3071R compressor housing is easier to rotate if needed while the Blouch
will require a C-Clip pliers to remove the big C-clip to rotate it to make it have the best fitment with
a TMIC
This shot we see the ATP GT3071R seems to be close to stock VF39, VF43 port size
Here the Blouch is certainly ported and opened up a bit. You can also see that the Blouch seems to have
a flange plate welded to the hot side to allow the garret housing to mate up ( interesting to find out what Blouch
is using for a hot side )
A back shot of each back side we can see that the ATP GT3071R is bigger then the Blouch even though the
internal porting is probly very close the ATP GT3071R seems to have a longer internal run possibly allowing more
velocity creating a better spool. The Blouch seems a little shorter of a run in side which might not hurt it but the housing is smaller
Just another top view
Close up top view of the ATP GT3071R
Close up top view of the Blouch
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