Jump to content
SAU Community

Buses And Bovs

someonestolecc
 Share

Recommended Posts

someonestolecc Grand Master

someonestolecc

Posted
  • Author
Posted

For some of the people in this post who didn't get what I was saying-

- it's not a fault. all buses do it of certain make(s) do it.

- i didn't say it was necessarily a bov used for turbos. it is air escaping so it's "blowing off" in some form or another. personally i think it's the door/brake pneumatics.

- it hurt my ear and I want to sue the government (not serious) so what would i do? why isn't this noise pollution? (does anyone know if it's just accepted or 'enshrined' in law somewhere?)

Thanks :(

... ps.

Can anyone tell me where to get one of these bus BOV's? and is there an adaptor to fit them to my laser turbo?

SIK WLEH BROTEC comes to the rescue.. PM me for a good price.

FATGTS-R Experienced

FATGTS-R

Posted
Posted

You sure thats an exhaust brake?

Not saying your wrong but I drive trucks and have not seen one set up like that before. I have only ever seen the butterfly flap in the exhaust pipe and the Jake brakes which hold the valves shut for the engine braking. How does that one work.

In relation to to BOV noise, as mentioned its the pneumatic release from the air brakes and in a bus situation from the airbag suspension as well. Sometimes when there stopped on a slope you see a bus rocking forward and backwards as the airbags try to level themselves.

I look at the engine setups on our trucks all the time and I have no friggin idea whats going on. One engine has an internal wastegate along with an external gate as well that seems to vent back to the inlet manifold?

And on the inlet piping they have multiple pressure actuators that I have not a clue what they do, when they open/close and what for.

Freddy Kruger Mentor

Freddy Kruger

Posted
Posted

couldnt they suppress it something? it shouldnt need to be that loud...

it real bad in a loading bay, the truck reverses in and the brakes squeels a little before it stops, then PPPPSSSSSSHHHHH!!!!! and you nugget your pants :/

GTRgeoff Grand Master

GTRgeoff

Posted
Posted

Yep, that's an exhaust brake. A Jake brake uses oil pressure to the hydraulic lash adjusters which cracks the exhaust valve on the compression stroke preventing the compression ignition combustion (no spark plugs) from completing so it "brakes" the engine.

Don't be afraid big rig and bus noobs, the noises won't hurt you. :P

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Its can also be height adjustment

Thats air driven aswell (esentially air bags i think).

SOme super new buses can change ride height depending on passenger load.

They too can be noisy. Not as loud as the compressor veniting though

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

    • V35Newbie
      After market rear camber arm adjustment

      By V35Newbie · Posted

      I know I have to get a wheel alignment but until then I just need to bring the rear tyres in a bit they're wearing to the belt on the inside and brand new on the outside edge. I did shorten the arms a bit but got it wrong now after a few klms the Slip and VDC lights come on. I'd just like to get it to a point where I can drive for another week or two before getting an alignment. I've had to pay a lot of other stuff recently so doing it myself is my only option 
    • Duncan
      After market rear camber arm adjustment

      By Duncan · Posted

      You just need a wheel alignment after, so just set them to the same as current and drive to the shop. As there are 2 upper links it may also be worth adding adjustable upper front links at the same time; these reduce bump steer when you move the camber (note that setting those correctly takes a lot longer as you have to recheck the camber at each length of the toe arm, through a range of movement, so you could just ignore that unless the handling becomes unpredictable)
    • V35Newbie
      After market rear camber arm adjustment

      By V35Newbie · Posted

      I got adjustable after market rear camber arm to replace the stock one's because got sick of having to buy new rear tyres every few months. Can anyone please let me know what the best adjustment length would be. I don't have the old ones anymore to get measurements. I'm guessing the stock measurement minus a few mm would do it. Please any help on replacing them would be fantastic I've watched the YouTube clips but no-one talks about how long to set the camber arm to.
    • GTSBoy
      Unpeeling the Orange

      By GTSBoy · Posted

      Heh. I copied the link to the video direct, instead of the thread I mentioned. But the video is the main value content anyway. Otherwise, yes, in Europe, surely you'd be expected to buy local. Being whichever flavour of Michelin, Continental or Pirelli suits your usage model.
    • Kinkstaah
      Unpeeling the Orange

      By Kinkstaah · Posted

      Continental have consistently beaten the absolute shit out of every other performance tyre in Wet/Damp/Cold conditions and give up a little bit of time (half a second at most) in the dry. Almost like it's engineered for German conditions or something. I'd def give those a try.
×
×
  • Create New...