Jump to content
SAU Community

new exhaust for N/A R33

doxximus

By doxximus,
in Engines & Forced Induction

 Share

Recommended Posts

doxximus Grand Master

doxximus

Posted
Posted

after getting my second epa notice i will be changing my exhaust after i get tested

what exhaust is good for an NA R33 that isnt as loud as a 2 1/2" with big bore but doesnt deplete power in the car

i realise that any exhaust mod will be loud but i want one thats not as loud

Link to comment
Share on other sites
doxximus Grand Master

doxximus

Posted
  • Author
Posted

haha that will seriously do nothing much for my situation

im going to be pujtting a standared muffler on it but afterwoulds i want something else that isnt as loud but still gives power

maybe one of those sausage things but not the ones that go on an angle coz i dun like them much

Link to comment
Share on other sites
Guest R32GTS25

Guest R32GTS25

Posted
Posted

I got my exhaust done again today, I used to have a 2 1/2" pipe with a bullet muffler, a resonator and a free-flowing rear muffler and it was FAR too loud. I got a set of extractors and a muffler in place of the bullet one which has quietened it down significantly, but I can't feel any loss in power (maybe cos of the extractors.) Apparently they put these mufflers on Falcons etc. to free up the flow but keep the noise down. I don't have a part number though, sorry. They just look like a small muffler, but the pipe inside is straight, and offset to one side. Hope you can make enough sense of this to help :P

Link to comment
Share on other sites
Nismodified Proficient

Nismodified

Posted
Posted

Hey guys, i new to this forum, and ive looked all over the net for info on mods and stuff for the RB25DE, but to no avail...:P

what power gains did you get from putting on the exausts you guys have?

Withing the next few months ill be embarking on some mods of my own, Gts25, and your experiences would help.:))

Link to comment
Share on other sites

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

    • TurboTapin
      CD009 RB Conversion

      By TurboTapin · Posted

      That's the most absurd thing I've ever heard. I would go cut bellhousing over that monstrosity of a flywheel all day, every day. It puts a lot more mass further from the last main bearing. I've had nothing but problems with Collins in the past and refuse to ever buy their products again. I would not trust anything they tell you. He's playing his salesman card.  I'm currently at 640whp on a mustang dyno (~770bhp) with the intentions of running E85 and a lot more power this upcoming spring. Cheers, 
    • GTSBoy
      PRP RB26 cast block + head prototype running

      By GTSBoy · Posted

      Nah, it's not the reduced knock margin. It is a direct mechanical effect of having to initiate the combustion earlier, while the piston is still rising, which starts to exert combustion pressure on the rising piston earlier, making the rest of the engine work harder to finish driving the piston up to TDC where the combustion pressure stops being a negative and starts being a positive. Your modern engine that only needs ~10° to make MBT doesn't waste the other 10 or so degrees of crank rotation. That's almost all of it. The difference in knock margin might go either way. Remember that modern engines to which you are currently comparing the long tractor engine (the RB) are now running super high compression, direct injection, tricky cam control and maybe even cylinder pressure sensors. You're not comparing apples with other fruit. It's apples and sea weed, or some other evolutionarily primitive vegetation. And remember, squish only really comes into play at the very end of the stroke. It certainly does good things, but it is not the biggest contributor to what's going on. It is quite possibly much less important in 4 valve head than 2 valvers also, because there is so much less squish available to a 4 valve anyway.
    • Dose Pipe Sutututu
      PRP RB26 cast block + head prototype running

      By Dose Pipe Sutututu · Posted

      Food for thought, a longer stroke motor would need less ignition timing vs. a shorter stroke motor requiring more ignition timing.
    • PranK
      Skid pans in/around Sydney?

      By PranK · Posted

      Thanks Duncan, HART is only 10 mins from me (I did my bike license there), it'd be awesome if it ran these types of things.  Sutton Road does look good and they take fewer cars than SMSP which is good.  Surely you have enough land to lay a few million tonnes of concrete and some sprinklers D? 
    • joshuaho96
      PRP RB26 cast block + head prototype running

      By joshuaho96 · Posted

      I thought an engine that needs more ignition timing to make power is going to result in less power due to reduced knock margin? More time for the combustion to propagate -> more time for it to heat up the rest of the mix to detonation.
×
×
  • Create New...