OUR VIDEOS GALLERY MEMBER SPONSORSHIP VENDOR SPONSORSHIP

User Tag List

Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Boost gauge install

  1. #1
    Expert SiberianPatrol's Avatar
    Join Date
    Jul 2015
    Location
    Siberia
    Posts
    379
    Thanks
    139
    Thanked 196 Times in 101 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Boost gauge install

    Had a guy install my boost gauge and I'm wondering if he tapped into the right place for a reading. He tapped a thread into the intake manifold just past the turbo. This seemed a bit odd but he was insistent that that was the best location to pick up the boost. I thought you simply picked it up from the vacuum line running from the injector pump to the turbo?

    Can someone clear this up for me? Did he do it right or do I need to tee into the vacuum hose? Here's the picture of what he did and the instructions for the gauge install.


  2. # ADS
    Circuit advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many

     

  3. #2
    Patrol God threedogs's Avatar
    Join Date
    Jun 2012
    Location
    Melb
    Posts
    31,636
    Thanks
    10,350
    Thanked 9,963 Times in 7,394 Posts
    Mentioned
    113 Post(s)
    Tagged
    2 Thread(s)
    Which engine do you have again??
    04 ST 3lt auto, not enough Mods to keep me happy, but getting there

  4. #3
    Expert SiberianPatrol's Avatar
    Join Date
    Jul 2015
    Location
    Siberia
    Posts
    379
    Thanks
    139
    Thanked 196 Times in 101 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Mine is the RD28Ti in a 99 GU.

  5. #4
    Patrol God threedogs's Avatar
    Join Date
    Jun 2012
    Location
    Melb
    Posts
    31,636
    Thanks
    10,350
    Thanked 9,963 Times in 7,394 Posts
    Mentioned
    113 Post(s)
    Tagged
    2 Thread(s)
    not familiar with that motor , but if its on the boost side why not.
    On my mighty ZD30 they drilled and tapped a hole under the ic.
    Im changing that to a plate that fits under the OE boost sensor
    neater imo
    Heat that tubing up in a cup of hot water , you'll be able to push it on further
    maybe even use small cable ties
    04 ST 3lt auto, not enough Mods to keep me happy, but getting there

  6. The Following User Says Thank You to threedogs For This Useful Post:

    SiberianPatrol (21st October 2015)

  7. #5
    Expert SiberianPatrol's Avatar
    Join Date
    Jul 2015
    Location
    Siberia
    Posts
    379
    Thanks
    139
    Thanked 196 Times in 101 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by threedogs View Post
    not familiar with that motor , but if its on the boost side why not.
    On my mighty ZD30 they drilled and tapped a hole under the ic.
    Im changing that to a plate that fits under the OE boost sensor
    neater imo
    Heat that tubing up in a cup of hot water , you'll be able to push it on further
    maybe even use small cable ties
    I'll be taking it for a drive today when he's done to see if it works right. If it doesn't, I'll cap off that hole and tee into the vacuum hose. Does you boost gauge register when you just rev the engine or do you have to be driving it under load to get an accurate reading?

  8. #6
    Expert SiberianPatrol's Avatar
    Join Date
    Jul 2015
    Location
    Siberia
    Posts
    379
    Thanks
    139
    Thanked 196 Times in 101 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Took it for a drive around the city and it sits around 5psi accelerating about 1/2 throttle. If I really punch it, it jumps to 9.5-10psi. Haven't taken it out on the highway yet because I need to replace my front hub seals. Does this seem like it's reading the right boost #s for the 2.8?


    1999 GU RD28Ti turbo diesel; manual transmission; 33" Khumo mudders; ... more mods on the way

  9. #7
    Expert
    Join Date
    Jan 2011
    Location
    SHELLHARBOUR
    Posts
    259
    Thanks
    32
    Thanked 51 Times in 42 Posts
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)
    Sounds right
    Light load should be around 3 to 5 psi full load and say over 2,000 rpm then 8 to 10 psi
    so looks good
    regards
    Joe
    2010-DX Patrol Dual Cab Chassis, Front LOKKA, 3500kg GVM, 4.8 front brakes! (now stops like it should!), 4.625 Diffs (now drives like it should) 35"Mud tires, 3"exhaust, Rear air bags

  10. The Following User Says Thank You to JoeG For This Useful Post:

    SiberianPatrol (21st October 2015)

  11. #8
    Expert SiberianPatrol's Avatar
    Join Date
    Jul 2015
    Location
    Siberia
    Posts
    379
    Thanks
    139
    Thanked 196 Times in 101 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by JoeG View Post
    Sounds right
    Light load should be around 3 to 5 psi full load and say over 2,000 rpm then 8 to 10 psi
    so looks good
    regards
    Joe
    Thanks, Joe. Since everything is mechanical on the 2.8, am I correct in assuming that there isn't any way to increase the boost since it is vacuum controlled and not controlled by the ECU?


    1999 GU RD28Ti turbo diesel; manual transmission; 33" Khumo mudders; ... more mods on the way

  12. #9
    Expert
    Join Date
    Jan 2011
    Location
    SHELLHARBOUR
    Posts
    259
    Thanks
    32
    Thanked 51 Times in 42 Posts
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)
    Ther is no way to increase the light load boost as that is a function of exhaust gas flow.
    However the boost at full load and higher gas flows can be controlled by a variable restrictor.
    typicaly a Daws valve and needle valve.
    do a search on this and think about it.
    Regards
    Joe
    2010-DX Patrol Dual Cab Chassis, Front LOKKA, 3500kg GVM, 4.8 front brakes! (now stops like it should!), 4.625 Diffs (now drives like it should) 35"Mud tires, 3"exhaust, Rear air bags

  13. The Following User Says Thank You to JoeG For This Useful Post:

    SiberianPatrol (22nd October 2015)

  14. #10
    Expert SiberianPatrol's Avatar
    Join Date
    Jul 2015
    Location
    Siberia
    Posts
    379
    Thanks
    139
    Thanked 196 Times in 101 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by JoeG View Post
    Ther is no way to increase the light load boost as that is a function of exhaust gas flow.
    However the boost at full load and higher gas flows can be controlled by a variable restrictor.
    typicaly a Daws valve and needle valve.
    do a search on this and think about it.
    Regards
    Joe
    Thanks again, Joe. I have a Dawes valve that I was going to install but it wasn't making much sense as to how it worked to increase boost. Need to do some more research. There's not much chance of boost spiking so I don't need to restrict the boost. Just didn't know if I could increase it by a couple of points.

Page 1 of 2 12 LastLast

Posting Permissions

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