Page 1 of 5 1 2 3 ... LastLast
Results 1 to 10 of 46
  1. #1
    Banned User
    Join Date
    Dec 2006
    Location
    Crest Hill, IL
    Posts
    9,512
    +1
    215

    More AIRFLOW, Riva IC...

    More AIRFLOW, Riva IC…

    Finally got my hands on a Riva IC to do some flow work, and the results were impressive.

    For the history on the flow work, and previous flow numbers, click on the links below…


    NORMAL FLOW
    BP = 4.0" in/water…
    27.2% LESS than the Piranha...
    71.2% LESS than OEM…


    MAXED OUT
    BP = 28.0" in/water...
    24.3% LESS while flowing 15.6% MORE compared to the Piranha…




    If you got any questions regarding the information I have posted, feel free to PM me...







    Flow Bench and how it works =
    http://greenhulk.net/forums/showthread.php?t=40111

    OEM IC
    http://greenhulk.net/forums/showthread.php?t=18850

    OEM Waterbox and Full Size Gutted
    http://greenhulk.net/forums/showthread.php?t=24191

    Piranha/Riva IC and XS IC
    http://greenhulk.net/forums/showthread.php?t=19138

    Rotax Racing IC
    http://greenhulk.net/forums/showthread.php?t=22162
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	flow_1207.jpg 
Views:	83 
Size:	55.6 KB 
ID:	48099  
    Last edited by Danny; 12-11-2007 at 11:12 AM.


  2. #2
    Banned User
    Join Date
    Jul 2007
    Posts
    287

    Your Opinion

    Danny which do u think is the best bang for the buck in your opinion you have flow numbers but someone with a budget and wanting to build which intercooler would u direct someone too buy

  3. #3
    Banned User
    Join Date
    Dec 2006
    Location
    Crest Hill, IL
    Posts
    9,512
    +1
    215
    Quote Originally Posted by caymanRXT View Post
    Danny which do u think is the best bang for the buck in your opinion you have flow numbers but someone with a budget and wanting to build which intercooler would u direct someone too buy

    The best kit form, matched with numbers, is the Riva...

    The best bang for the buck in kit form, is the Piranha...

    If you want to go SUPER budget, the XS is the one to choose...BUT you have to do all the work, from getting the IC itself from a source...to building a bracket and getting the pipes...to obtaining all the small items, such as water lines and IC block-off...but when done right, you get equivilant performance...

  4. #4
    Banned User
    Join Date
    Dec 2006
    Location
    Crest Hill, IL
    Posts
    9,512
    +1
    215
    Picture of unit on flowbench....
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	riva_flow.JPG 
Views:	111 
Size:	78.3 KB 
ID:	48105  

  5. #5
    Banned User
    Join Date
    Jul 2007
    Posts
    287
    Thanks

  6. #6
    mtrager's Avatar
    Join Date
    Jul 2006
    Location
    Orlando, Florida, United States
    Posts
    2,443
    +1
    2

    Thumbs up

    Great info Danny.

  7. #7
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
    +1
    2,524
    As always, great info Danny

    We must remember that it's not just rate of flow that makes a good intercooler, but also thermal efficiency. The ability to reduce the temperature of the incoming air is a huge factor in determining the overall power gain of the intercooler.

    This is why the best flowing intercooler isn't always the best choice as the air doesn't spend enough time in the intercooler to reduce the air temps.

    On the flip side, the Rotax Racing intercooler has the lowest ouput temps, but it's also very restrictive which hampers performance.

    Ideally, you want an intercooler that fits your application. This is why i use the Riva intercooler. It's properly sized for our application and delivers the best performance.

  8. #8
    Website may not be suitable for small children WOT's Avatar
    Join Date
    Mar 2007
    Location
    DFW
    Posts
    654
    Jerry, well stated.

    A couple of points worth mentioning:

    The easiest way to increase the heat tranfer effectiveness of a heat exchanger is to run convoluted fins or baffles or some means to introduce turbulence in the airlow so that it "touches" more of the fins inside the intercooler. It's more of a surface area thing than a time thing. But, the more fins, and pins, and fluted, twisted pieces of aluminum (or copper) that you put inside of an IC (to a point), the more restrictive it becomes.

    So, what you have here is a compromise.

    Now, with a turbo, you can up the boost to make up for the pressure loss and then go with a more restrictive IC that transfers out more heat, but hey that's for another discussion...

    Oh, and Danny - thanks for the data points. This is great stuff.

  9. #9
    Website may not be suitable for small children WOT's Avatar
    Join Date
    Mar 2007
    Location
    DFW
    Posts
    654
    Danny, I see that the units for back pressure (BP) are inches of water, but what are the units for airflow, cubic feet/second? lbm/sec? other?

    thanks,

  10. #10
    cbrich's Avatar
    Join Date
    Nov 2006
    Location
    Around Lake Travis
    Posts
    1,374
    +1
    1
    Am I interpreting the table right?

    The XS has the lowest restriction (1.2) at a constant flow (0.46), and also has the highest air flow (4.1) with the lowest restriction (9.5), Is this right.

    If this is right my next question would be thermal efficiency of each intercooler. Someone should test this out.

Page 1 of 5 1 2 3 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Riva IC install in a GTX SC...
    By Pale Rider in forum 4-Tec Performance
    Replies: 38
    Last Post: 09-08-2007, 08:12 PM
  2. More AIRFLOW work on IC's...
    By Danny in forum 4-Tec Performance
    Replies: 73
    Last Post: 02-21-2007, 10:59 PM
  3. Who wants to measure the RIVA IC?
    By Shibby1485 in forum 4-Tec Performance
    Replies: 20
    Last Post: 02-04-2006, 12:18 AM
  4. Anyone Run RR IC or Riva IC by itself?
    By Water4fire in forum 4-Tec Performance
    Replies: 7
    Last Post: 01-15-2006, 12:17 AM
  5. RR IC vs. Riva IC vs. ????
    By 1 FAST VE in forum 4-Tec Performance
    Replies: 38
    Last Post: 09-12-2005, 09:04 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •