OUR VIDEOS GALLERY MEMBER SPONSORSHIP VENDOR SPONSORSHIP

User Tag List

Page 1 of 4 123 ... LastLast
Results 1 to 10 of 31

Thread: General questions about GU's

  1. #1
    Advanced
    Join Date
    Aug 2020
    Location
    Brisbane
    Posts
    36
    Thanks
    0
    Thanked 15 Times in 10 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    General questions about GU's

    My son brought his first car today, 2001 GU with a replacement 2004 motor. Drove it about 300kms home and I was wondering about Boost and EGT's. The boost never got above 8, is this normal? On long uphill sections EGT was up around 500c, is this normal? EGT most of the time was 350-450c. The car has a catch Can fitted and did have Dawes Value which the previous owner removed as he thought it lowered the boost even further. He gave me the removed Dawes Value.

    Is removing and cleaning the intercooler a good place to start? I believe managing EGTs is an important part of engine life.

    Also is there a max upper limit you never want EGTs to exceed?

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

     

  3. #2
    Patrol God mudnut's Avatar
    Join Date
    Aug 2012
    Location
    SW Vic.
    Posts
    7,309
    Thanks
    9,851
    Thanked 4,943 Times in 2,947 Posts
    Mentioned
    76 Post(s)
    Tagged
    1 Thread(s)
    @mudski. This is right up your alley.

    If the intercooler is the original type (three piece construction) and is oily, then it is probably leaking, which will affect boost.

  4. The Following User Says Thank You to mudnut For This Useful Post:

    mudski (21st March 2021)

  5. #3
    Advanced
    Join Date
    Aug 2020
    Location
    Brisbane
    Posts
    36
    Thanks
    0
    Thanked 15 Times in 10 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by mudnut View Post
    @mudski. This is right up your alley.

    If the intercooler is the original type (three piece construction) and is oily, then it is probably leaking, which will affect boost.
    Ok, Thanks will check this out

  6. #4
    The master farter
    mudski's Avatar
    Join Date
    Apr 2012
    Location
    Eltham North
    Posts
    14,961
    Thanks
    8,073
    Thanked 10,391 Times in 6,050 Posts
    Mentioned
    419 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by stricky View Post
    My son brought his first car today, 2001 GU with a replacement 2004 motor. Drove it about 300kms home and I was wondering about Boost and EGT's. The boost never got above 8, is this normal? On long uphill sections EGT was up around 500c, is this normal? EGT most of the time was 350-450c. The car has a catch Can fitted and did have Dawes Value which the previous owner removed as he thought it lowered the boost even further. He gave me the removed Dawes Value.

    Is removing and cleaning the intercooler a good place to start? I believe managing EGTs is an important part of engine life.

    Also is there a max upper limit you never want EGTs to exceed?
    Quote Originally Posted by mudnut View Post
    @mudski. This is right up your alley.

    If the intercooler is the original type (three piece construction) and is oily, then it is probably leaking, which will affect boost.
    Yep. Replace the intercooler, It will be leaking, if your only seeing 8psi. Without the dawes the boost should be randomly spiking at over double that. The reason the Dawes was removed because there is a boost leak I would say.
    High EGTs is a result of the low boost pressure. With a sealed intake system, dawes fitted and even a needle valve to control the turbo spool up speed, you should see 16psi and having a slightly faster turbo spool up from using a needle valve will see your EGT's drop no doubt.

  7. The Following User Says Thank You to mudski For This Useful Post:

    mudnut (22nd March 2021)

  8. #5
    Advanced
    Join Date
    Aug 2020
    Location
    Brisbane
    Posts
    36
    Thanks
    0
    Thanked 15 Times in 10 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the info. I also noticed it has a K&N air filter, I have heard this could cause problems. What sort of problems does it cause and are they bad enough to look at replacing it.

  9. #6
    The master farter
    mudski's Avatar
    Join Date
    Apr 2012
    Location
    Eltham North
    Posts
    14,961
    Thanks
    8,073
    Thanked 10,391 Times in 6,050 Posts
    Mentioned
    419 Post(s)
    Tagged
    0 Thread(s)
    If not cleaned and re oiled properly you will have issues. If your concerned, just buy a standard paper filter.

  10. #7
    Advanced
    Join Date
    Aug 2020
    Location
    Brisbane
    Posts
    36
    Thanks
    0
    Thanked 15 Times in 10 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Another question, anyone recognise this, I need to know the brand to try and get a replacement LED indicator. Thanks

    Edit -Found out this is a Rockarmor and I have located the replacement indicator.
    Attached Images Attached Images
    Last edited by stricky; 22nd March 2021 at 05:50 PM.

  11. #8
    The master farter
    mudski's Avatar
    Join Date
    Apr 2012
    Location
    Eltham North
    Posts
    14,961
    Thanks
    8,073
    Thanked 10,391 Times in 6,050 Posts
    Mentioned
    419 Post(s)
    Tagged
    0 Thread(s)
    Looks like and early ARB bar. Maybe. Or TJM.

  12. #9
    Beginner
    Join Date
    Feb 2021
    Posts
    28
    Thanks
    0
    Thanked 19 Times in 14 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Doesnt take much oil from a k and n to contaminate the maf sensor. I found this out the hard way and got advised just run a stock one unless going aftermarket airbox etc there is no point

  13. #10
    Advanced
    Join Date
    Aug 2020
    Location
    Brisbane
    Posts
    36
    Thanks
    0
    Thanked 15 Times in 10 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by wagu89 View Post
    Doesnt take much oil from a k and n to contaminate the maf sensor. I found this out the hard way and got advised just run a stock one unless going aftermarket airbox etc there is no point
    By stock one do you mean the filter itself or the whole unit? Not sure if a different filter would work.

Page 1 of 4 123 ... 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
  •