Banks Twin Turbo Issue...Please Help!
+ Reply to Thread
Results 1 to 7 of 7

Thread:
Banks Twin Turbo Issue...Please Help!

  1. #1
    Senior Member n8dawg's Avatar
    Join Date
    Jan 2008
    Location
    Santa Paula
    Posts
    1,185

    Default Banks Twin Turbo Issue...Please Help!

    My turbos used to not go pass 7lbs. of boost now after making a hard pass the motor sounds different and the boost goes past 10lbs.! I let off quick and babied it back to the trailer. One of my hoses (the one that connects the carb. to the turbo) is very soft and a little crimped. There is no wierd smoke coming out or anything, just sounds a little off.
    Any ideas??
    Thanks in advance from a new turbo owner.
    Nate

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    149 BGJ-Willis Power 540 willis's Avatar
    Join Date
    Feb 2008
    Location
    Gardena, CA
    Posts
    529

    Default

    Hey,

    To find all the problems with the combustion chambers and rings, heads, valve seats, do a Leakdown and go from there.

    The leakdown technician will advise you what is in disrepair.

    Jet Boat Performance
    (805) 466-4719Fax:

    8410 # M El Camino Real
    Atascadero, CA 93422
    Email:



    Willis
    Last edited by willis; 07-29-2008 at 12:43 PM.

  4. #3
    Some guy obnoxious001's Avatar
    Join Date
    Dec 2007
    Posts
    3,571

    Default

    Quote Originally Posted by n8dawg View Post
    after making a hard pass the motor sounds different and the boost goes past 10lbs
    What do you mean by "sounds different"? How are the gauges when you run hard? What type of gas are you running? Feel free to PM if you want, I worked for Banks when those kits were popular (late 70's)

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member n8dawg's Avatar
    Join Date
    Jan 2008
    Location
    Santa Paula
    Posts
    1,185

    Default

    Quote Originally Posted by obnoxious001 View Post
    What do you mean by "sounds different"? How are the gauges when you run hard? What type of gas are you running? Feel free to PM if you want, I worked for Banks when those kits were popular (late 70's)
    Haven't had time to dig into it but it sounds like its running with some loose spark plugs,wires or something.
    Where can I get replacement hoses for this thing all the way around?

  7. #5
    Senior Member n8dawg's Avatar
    Join Date
    Jan 2008
    Location
    Santa Paula
    Posts
    1,185

    Default

    Quote Originally Posted by obnoxious001 View Post
    What do you mean by "sounds different"? How are the gauges when you run hard? What type of gas are you running? Feel free to PM if you want, I worked for Banks when those kits were popular (late 70's)
    All the gauges check out. Oil: 60-80. Temp: 110-120*.
    Running 91 octane. Never seen the boost go past 7lbs untill now. What could have changed to make that possible? A hose maybe?

  8. #6
    Senior Member TwinTurbo540's Avatar
    Join Date
    Jan 2008
    Location
    spokane, WA
    Posts
    1,164

    Default

    Are the turbo's internaly wastegated? You could have one of the gates geting stuck closed slightly more than usual wich would cause an increase of boost.

    Travis

  9. #7
    Banned
    Join Date
    Dec 2007
    Location
    In a house, on a street, in a city, in Arizona.
    Posts
    4,599

    Default

    I had that same thing happen to my Schiada with a blower. Turns out that I had broken a rocker. Check the valvetrain for starters as a drop in 1/8th of your cylinders will definately show an increase in boost, not to mention cause a "change in sound."

    Quote Originally Posted by n8dawg View Post
    Haven't had time to dig into it but it sounds like its running with some loose spark plugs,wires or something.
    So it sounds like it's got a dead hole or two??? check your valvetrain.

    Leakdown after that.

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95