Subiesport Magazine - June/July 2008 - (Page 66)

AVO 420 TURBO INSTALL slightly modified to clear the smog-pump tubing on the back of the head. Also note that these turbos will work with the new 2008 Impreza as it shares the same intercooler and turbo setup as the Legacy GT. Our results with this turbo are a bit mixed. While this turbo does make good power, it falls a bit short of expectations, especially when compared with Mitsubishi turbos of similar size, namely the TD05 18G. Secondly, we found spool to be an issue. Since the AVO 420 uses a larger hot side with a smaller compressor, it takes a while for the turbo to come up to boost. We did not hit peak boost until 4,000rpm. “The car is a blast to drive. The only problem is with the power being so far up the tach, I usually run out of road before I really get into it,” said Subiesport publisher Ryan Douthit. “I think it’s a turbo that is best suited for track applications and may do better with higher octane fuels than what we can find on the corner here in the United States.” While the AVO may not rock the house in the power or spool department, it makes up for this somewhat in ease of installation and longevity. AVO claims that, thanks to its larger turbine housing, Garrett ball-bearing center sections and superior grade of construction materials, this turbo will outlive our car, or at least live as long as we own the car. This is important when considering that some journal-bearing turbos may live very short lives indeed of around 30,000 miles or less, depending on how hard you push your turbo. To have our AVO 420 installed, we turned to IPD/Rallitek in Portland, Ore. To see a short video of this installation complete with helpful installation hints, go to www.subiesport.com. 1. To get to the turbo the intercooler must ﬁrst be unbolted. Undo the hose clamps at the throttle body, unbolt the mounting bracket and then unbolt the intercooler from the turbo and then pull it free. 2. With the intercooler removed you now have easy access to the turbo. Unbolt the oil feed line (top bolt with red mark underneath the turbo outlet) and undo the downpipe. 3. You will have to get underneath the car to remove the downpipe and drain ﬂuids. First, remove the splash tray. 4. Unbolt the downpipe. The Perrin pipe has two sections making it easier to remove. You will also have to unbolt the lower turbo studs from underneath the car. 5. If you want to be clean and enviromentally friendly, drain your coolant as you will have to remove the coolant lines from the turbo. 6. Use a pair of pliers to undo these spring clips which clamp the coolant lines onto the turbo. 7. Unbolt the other side of the oil feed line. Since the line is rigid, it helps to completely remove it to ease turbo removal. 8. Unbolt the turbo from the uppipe. Heat and corrosion can bake the studs to the nuts, make sure you can apply the proper amount of leverage. 9. Make sure you have a place to keep your hardware. This colander is a great way to keep you bolts from going astray. 66 JULY 2008 http://www.subiesport.com

Table of Contents Feed for the Digital Edition of Subiesport Magazine - June/July 2008

Subiesport Magazine - June/July 2008 Contents Editor Letters Readers’ Rides Subaru News Fresh Squeezed Hell's Legacy Under the Radar Project GT Rebuild New Engine AVO 420 Turbo Perrin Intercooler Rally Like a Rockstar Rally Jordan Adventure WRC Rally Argentina WRC Rally Jordan WRC Rally d’Italia Sardegna Where to buy Subiesport WRC2008 Debut Rally America: Olympus Ad Directory Rally America: Oregon Trail Spotted!

Subiesport Magazine - June/July 2008

For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.