Jump to content
LegacyGT.com

compsurge

Mega Users
 View Profile  See their activity

  • Posts

    2,526

  • Joined

 Content Type 

Posts posted by compsurge

    3D Printing Development Thread

    in Fourth Generation Legacy (2005 - 2009)

    Posted · Edited by compsurge

    Just wanted to throw my hat in. I have a DaVinci printer that prints ABS and I can run it through an acetone steam bath to make it smooth if people want parts like that :) I'll just need the STL file(s) you want printed and than I can provide a cost estimate. And if you can provide your zip code I can give a shipping estimate as well.

     

    Did you hack yours to open source or build the Arduino cartridge EEPROM reset rig (so you can buy any filament and reload the cartridge)yet?

     

    Also, if anyone is interested in selling their 3D print service... http://www.makexyz.com

    GrimmSpeed 08+ WRX/LGT Top Mount Intercooler - Any Interest?

    in Turbo Powertrains (2.0GT, 2.5GT, 2.5XT)

    Posted · Edited by compsurge

    The results are very promising. The temperature of both runs (OEM and GS) pre IC were nearly identical, which is a good indication that the output is comparable. The test indicates that it has a much higher heat flux than the OEM intercooler. The test indicates that the airflow over the core is very good. The OEM IC brings the temperature down after peak boost, but nowhere near as well as the GS.

     

    The test also showed that the intercooler was heat soaking post-run at a rate consistent with stock at the post-IC temp, but is in fact increasing pre-IC, likely due to the aluminum end tank. The fact that it is still decreasing the temp over stock is a sign that the design is working very well. It also appears the splitter design is working well.

     

    I would be interested to see the test repeated the test on a 100 degree day. It would also be advantageous to have throttle position (so we know when the run starts) and pre/post IC pressure data for measuring the pressure drop as well.

     

    Based on this data set it looks very promising.

     

     

    I have a few questions about that testing.

     

    The ambient temps were between 20-22 degrees and the GS TMIC is essentially a giant piece of aluminum.

     

    How much of this efficiency in the test can be attributed to that giant cold piece of aluminum?

     

    What happens after two minutes of testing? Or even, thirty minutes of more "typical" driving?

     

     

    Heat transfer will be a function of the material, temperature difference (ambient vs. intercooler inlet to exit air), and mass flow (air movement). In this case, the outside temperature will greatly affect a run due to the greater air density (more mass) and lower temperature (higher temperature difference). As the ambient temperature increases, we may see very different results due to the GS unit having more mass. You are absolutely correct to question this.

    Resurrect Subie Wan Kenobi

    in Engine Rebuild Threads (Engines Only)

    Posted

    RTFM for putting the RTV. It's crystal clear. Sometimes I have to wonder if these shops even read the manual.

     

    Manuals and checklists are for those who want to do it right the first time.

     

     

    As for that motor, you likely had cracked ringlands on 2 & 4. It's possible that you had a major pre-detonation event when the turbo failed, but I would be willing to bet you had a lot of knock recorded in the tables and the car drove around jerky even with the turbo working.

     

    I'd throw it all out and spend time building up a new shortblock with your heads inspected and/or rebuilt.

×
×
  • Create New...

Important Information

Terms of Use

  I accept