Jump to content
SAU Community

no mechanical whirr...exhaust

streamer

By streamer,
in Engines & Forced Induction

 Share

Recommended Posts

streamer Rising Star

streamer

Posted
Posted

do any of you guys with the NA r33's...just like mine have ;loud exhausts but none of dat mechanical whirr?

whenever a skyline goes by, there's this mechanical whirr...whirrrrrr kinda sound but mine just has a boooooommmm kinda sound...doesnt sound like the gtst at all...

ne of ya'll got this problem?

thanks guys...n just wondering..=)

Link to comment
https://www.sau.com.au/forums/topic/21831-no-mechanical-whirrexhaust/
Share on other sites
NA_R33 Grand Master

NA_R33

Posted
Posted

im not exactly sure if this is what ur talking about but that mechanical noise i assume ur describing is the turbo spooling up. There are very few of us NA boys out there so id say everytime u see/hear a skyline it is most of the time a turbo.

Pva_Glue Grand Master

Pva_Glue

Posted
Posted

I not sure what you are talking about but...

here is a video clip of my R33 GTS-4 revving up at the light.

its Gun metal Grey with SDU (skylineDownUnder) sticker at the back... its abotu half way of the clip after R31 sleeper :(

I loved the sound of my sky.. pretty loud compared to Turbo cars cuz you know why... :D

enjoy guys and put some your clip if you have them.

NA R33 GTS-4 vidclip approx 3.3MB

cheers

Joey

NA_R33 Grand Master

NA_R33

Posted
Posted

i think there are some sort of pod filters available with a plastic cover over them that whistle as air is sucked through them if u want that kinda sound, though they look fairly restrictive to me, not sure what brand either.

nismoman18 Mentor

nismoman18

Posted
Posted

heres a few ideas ive heard, to get a nice exhaust note drill a hole through ur exhaust pipe before the muffler, get a bit of guutar string and tack weld it thourgh the pipe, voila u have a wonderful note! another one was to stick a PC fan before the muffler and ull get a turbo whistle lol, never tried it doubt i will! i was gonna try putting a whistle (from those vortex things) in the pod filter before the AFM, lame ;)

NS2500 Experienced

NS2500

Posted
Posted

I think what streamer was referring to is the difference between the noise of an NA exhaust and the noise of the turbo exhaust...

The NA has a mechanical "zing" sound to it, which I don't ever want to give up even if my exhaust is inefficient.

The turbo has a much lower quieter sound due to the greater flow/less restriction.

Pva_Glue Grand Master

Pva_Glue

Posted
Posted
Originally posted by NS2500

The turbo has a much lower quieter sound due to the greater flow/less restriction.

correction... its due to its length of the exhaust...:P

Longer pipe = Lower pitch (Bass)

short pipe = hight pitch

add- Longer pipe >(greater) restriction

cheers

Joe

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

    • GTSBoy
      R34 gtt rb25det neo timing belt kit

      By GTSBoy · Posted

      Just don't use ChatGPT or any other artificial stupidity for the equivalent of googling. Their demonstrated inability to discriminate reality from hallucination should be enough to make them totally untrusted. LLMs don't know anything and cannot think to even the smallest extent. They are just predictors of the next word, and that should never be confused with capability.
    • GTSBoy
      Another little story of weird shit happening

      By GTSBoy · Posted

      I think, given the usage model described in the OP, I'd never ever experience the wonders of the 400kW upgrade. What I really need is boost from 2000rpm and probably no more than 260-270rwkW. But I suspect that the highflow is not actually the turbo for that purpose, so I may in fact need to get a G25 or 30 or something right sized and very spooly. We shall see after it is tuned. I've had to back the boost and boost ramp off to stop the thing from pinging since the highflow went on, so I've been almost living the NA life for 9 months now! Injectors are recently in hand. AFM is in hand. Dyno is fixed. Just need to clear a queue of f**king Supras out of the way (and probably fit my new gearbox). So....some time this year? Lol.
    • GTSBoy
      braided lines for the turbos

      By GTSBoy · Posted

      For what I gather is a Sunday/summer car....braided is fine. You're not going to be left without a vehicle and you have plenty of time for inspection/maintenance. Oof. I wouldn't use them that way. They can probably handle the temperature** but the internal corrugations means that their flow characteristics are a bit shit. Lots of extra friction and pressure loss. Makes them flow like the next pipe size down. ** They are stainless, and the stainless can usually be at least something like 304L, which is pretty good at higher temperatures (unlike 316L, which I would use for a wrt/corrosive environment, but not a particularly hot environment). But the welding needs to be top notch. And even then, because you usually need at least one cone-seat end on them (because you can twist the hose and do up both ends at the same time unless one of them is a union) they can be prone to coming loose with heat cycles.
    • sunsetR33
      braided lines for the turbos

      By sunsetR33 · Posted

      I don't have the OEM oil feed lines though and the turbo-wraparound line is torn, only has water. My plan is to get replacements for these and just connect a braided line to there. And make sure it's leak free. Hoses like these are also sometimes used to connect external wastegates, so for an EGR I think you're good using them.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Alright I understand. The most likely case is probably gonna be that I just keep the OEM unit in the car as long as it works.
×
×
  • Create New...