Jump to content
SAU Community

Hitting Boost Slower Than Normal

Black Widow

By Black Widow,
in Engines & Forced Induction

 Share

Recommended Posts

BNR32t Proficient

BNR32t

Posted
Posted (edited)

small leak in your boost line...

waste gate might not be closeing totaly.

i dont really know but they sould like possibilitys

Edit: might be low on compression

Edited by BNR32t
abu Grand Master

abu

Posted
Posted (edited)
ah goodie. so i'd be better off getting it checked out and having a compression test done?

Check for any obvious leaks firstly, that will be the easiest thing (Intercooler piping, gaskets as well).

Make sure all the VAC lines are plugged in where they should be :w00t:

Compression test you can do your self also, with a compression tester ($50). There is a write up somewhere on the forum on how to do it, and most of the testers have instructions on the back.

Good luck!

Edited by abu
Black Widow Veteran

Black Widow

Posted
  • Author
Posted
Check for any obvious leaks firstly, that will be the easiest thing (Intercooler piping, gaskets as well).

Make sure all the VAC lines are plugged in where they should be :w00t:

Compression test you can do your self also, with a compression tester ($50). There is a write up somewhere on the forum on how to do it, and most of the testers have instructions on the back.

Good luck!

i know there's a hose thats not connected but i dnt know what its for. but its always been there and hasn't affected the boost

R338OY Veteran

R338OY

Posted
Posted

Similar story with me (you'll be able to see my post 'Leaking boost charge')

I can't find any leaks but the boost isn't coming on like it used to. I'm not sure what it is, whether it's the turbo (wastegate), intercooler (highly doubt it), exhaust (doubt it too).

What would a mechanic check for if he was at this stage?

After a compression test, would he take apart the exhaust to look for evidence?

Would he take apart the wastegate?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Steal01
      Torana Lx Gtr Hatch, Lots Of Pictures

      By Steal01 · Posted

      It’s going to be a beast!
    • soviet_merlin
      Stagea Front CV Axle Question

      By soviet_merlin · Posted

      Man, different parts but the same numbers is terrible @dbm7! And it doesn't help that most online shops don't list the part numbers at all. They just give a list of compatible models...
    • MBS206
      R32 GTST - 600KW+ RB28/CD009 Build

      By MBS206 · Posted

      Slow when hot could also be because its getting more dynamic compression, OR things are getting a bit tighter once it is all expanded. If it were an earthing issue, typically I'd expect you to have it have issues all the time. Unless it's really a combination of both things. Where the higher compression, and things being a bit tighter, is giving that bit of extra load and you do need a slight clean up on the cables/connections.
    • dbm7
      Stagea Front CV Axle Question

      By dbm7 · Posted

      Yeah, this is one of the most annoying things about nissan part numbers... I've got an unrelated example... Image is of the AT output shaft ~ they have the same part#, but clearly the shaft on the left is beefier design to that on the right ...the difference (essentially) is the 'lighter' shaft on the right, is for engines up to RB25DE (this includes RB20 variants) : the shaft on the left is for RB25/26DET(T)....are they interchangeable? Yes...but obviously one shaft is going to be stronger than the other...and, the lighter shaft is around USD115, but the heavier shaft closer to USD150...same part#... ...epc-data usually tells a tale ~ the amayama listing for 39100-23U60 has a note "Longest side is between 60 and 105 cm" ; no such info is there for 39100-23U70 ...and given the great disparity in price between the 2 parts, it makes me at least curious (to the point of caution) where the 'extra money' went? ...ie; these 2 parts have a cost difference that (to myself at least) isn't explained by 'plastic boot'...ie; with amayama there's AUD700 price difference ...plastic versus rubber?...I'm not seeing it like that...and 60cm ~ 105cm...??...that's a huge disparity....something hinky going on here... I'd try searching by VIN, not model... /2cents
    • Duncan
      Stagea Front CV Axle Question

      By Duncan · Posted

      I don't know for sure, but I'd expect them all to be interchangeable given the diff end and hub end don't move/change between any C34 series. Often Nissan will change part numbers and the aftermarket follows those year ranges; but the original part number change doesn't mean other parts won't fit. The change could be a change in material, internal parts or even just supplier. For example, all the RB gearbox to engine bolts are no longer available and there is a new part number instead. The only change is they went from cadmium plated bolts to zinc plated due to the issues manufacturing with Cadmium. They look different but work the same.
×
×
  • Create New...