Plumbing question
+ Reply to Thread
Results 1 to 8 of 8

Thread:
Plumbing question

  1. #1
    Senior Member
    Join Date
    May 2014
    Posts
    191

    Default Plumbing question

    I'm wondering if I'm correct in my thoughts on Plumbing my jet boat. I'm going to run a line from the pump to the pressure relief valve and from that valve up to a tee fitting and into the water pump ports. Two lines out of the thermostat housing, one dumps overboard one has a valve on it to control water out. Is this correct or am I missing something? The line coming from the thermostat housing with the valve on it will be going to my header control valve. And yes I've looked at plenty of pictures and diagrams on this.

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member Hass828's Avatar
    Join Date
    Dec 2007
    Location
    okie, lake Texoma
    Posts
    6,275

    Default

    Quote Originally Posted by f-bomber View Post
    I'm wondering if I'm correct in my thoughts on Plumbing my jet boat. I'm going to run a line from the pump to the pressure relief valve and from that valve up to a tee fitting and into the water pump ports. Two lines out of the thermostat housing, one dumps overboard one has a valve on it to control water out. Is this correct or am I missing something? The line coming from the thermostat housing with the valve on it will be going to my header control valve. And yes I've looked at plenty of pictures and diagrams on this.
    Lots of ways to do it. I personally prefer to have the control valve right after the pressure bypass valve, not on the water outlet of the block. This way if a chunk of crap where to stop it up-- it cant over pressure your block.
    "if we keep doing it the same way we always do..we will always get the same results"
    H8-2-W8
    [email protected] first pass

  4. #3
    Senior Member
    Join Date
    May 2014
    Posts
    191

    Default

    Thanks, I was thinking that originally but read somewhere you want to control water out not in. Maybe mistaken, controlling water in makes more sense to me.

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member ol guy's Avatar
    Join Date
    Mar 2008
    Location
    Lake Elsinore Ca
    Posts
    3,811

    Default

    Quote Originally Posted by f-bomber View Post
    Thanks, I was thinking that originally but read somewhere you want to control water out not in. Maybe mistaken, controlling water in makes more sense to me.
    It probably was a post I put up awhile ago. the main reason I regulate water out and not in is for air-pockets and hot spots in the block. If you fill the block and heads then regulate the exit water you can get the engine as hot or cold as you want. Most engines start moving and making power at 160 degrees and above. Most engines are wearing cylinder walls and piston rings at LOWER temps. Ask the builder about it! M

  7. #5
    Senior Member
    Join Date
    May 2014
    Posts
    191

    Default

    Wouldn't regulating the water out be the same as what a thermostat does?

  8. #6
    Senior Member ol guy's Avatar
    Join Date
    Mar 2008
    Location
    Lake Elsinore Ca
    Posts
    3,811

    Default

    That entirely depends on how you plumb it. If you come out of the pump into the engine(water pump inlets) then thru the block and heads then out the intake thru a thermostat you have #1 filled the block entirely. #2 regulated the EXIT water. That was my whole point. If you opt to run a thermostat make sure to run a warm enough * stat. But again ask your'e builder.

  9. #7
    Senior Member
    Join Date
    May 2014
    Posts
    191

    Default

    I wasn't planning on running a stat, thought controlling the water out would do the same thing? Do most guys run a thermostat?

  10. #8
    Senior Member ol guy's Avatar
    Join Date
    Mar 2008
    Location
    Lake Elsinore Ca
    Posts
    3,811

    Default

    Quote Originally Posted by f-bomber View Post
    I wasn't planning on running a stat, thought controlling the water out would do the same thing? Do most guys run a thermostat?
    I will not speak for others. I do not have not or ever have ran a thermostat. I always ran pump pressure to and thru the engine and then regulate or jet the exit to get the engine to a proper temp. M

+ 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