Jump to content
SAU Community

Epa And Zorsts

khunjeng

By khunjeng,
in Victoria

 Share

Recommended Posts

khunjeng Veteran

khunjeng

Posted
Posted

ok I got my notice and got tested:

Hi-Flow Cat, mid muffler + hot dog + HKS Super Dragger = 94dB

Reverted to a stock system (cat back) 87dB.. was quiet as...

So...it appears you would be close to the 90dB limit with a stock zorst + cannon...I assume most people have hi-flo cats etc

To assist others, what results has every1 else got on the test?

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/
Share on other sites
sloe-32 Collaborator

sloe-32

Posted
Posted

I also recieved an epa notice the other week for my exhaust. I was told by a tuner that if you buy about 10 metres of steel wool and jam down the exhaust, u'd surely pass. Then after that, just fang it on boost and inevitably, the steel wool should shoot out the back. I'd have to do this for the fact that i have an ECV welded where the diff sits, thus not being able to change exhaust systems easily. Has anyone tried this trick?

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2711096
Share on other sites
Jamezilla Grand Master

Jamezilla

Posted
Posted

From my run in with Office Steve Austin and his bionic hearing...

Fujitsubo Super TI cat back - and when I say 'cat', I mean a pipe shaped like a cat, and when I say shaped like, I mean it looked like a pipe. Standard front/dump.

99dB - wooh!

Put a GTSt stock system and cat on, was a delightful 88dB

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2711104
Share on other sites
700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted

3"cat ,1 foot resinator :w00t: ....mid muffler :wave: and hot dog :) 95dba.

Had to get a new muffler and swapped it for the hot dog then it was 90dba at 5300RPM(RB26).

The test is flawed because the Muffler joint that tested it with the new Muffler,(which dropped the size to 1.5 inch.)told me at 3800 RPM he had me at 97dba ;) .So much for the EPA really not knowing shit about imports.

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2711728
Share on other sites
khunjeng Veteran

khunjeng

Posted
  • Author
Posted

haha a few classics...

yeah so it seems my theory about stock zorst + cannon will probably be over..

which means...basically the whole world of import drivers are over - man I was looking at my stock on the car...looked so sad...was was quite overcome..

just wait for the new twin cannon system I just designed...should be on by the end of the week.

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2711741
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Just wondering, are you testing it at ~4000rpm?

well i doubt it, thats not where they are to be measured.

It all changed about... umm... 18 months or so ago :laugh:

RB20 is 4200 or 4300

RB25 is testing @ 4600 or 4800

RB26 is 5200

The RB26 figure is right, i've checked it. But the others im not sure about as i cant remember.

Been just over 12 months since i've been to the EPA, soon to go back though

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2712063
Share on other sites
mr_crust Experienced

mr_crust

Posted
Posted

mate of mine got done is his VP SS and racked up 129db , since then the car has been sold.

but the test must be done in an open area, the testing peice must be on a 45degree angle , 1metre away from the exhuast.

another close mate got done in his integra with a stock exhaust, all he had was a tip and they shoved the thing right infront of his exhaustand he went over the limit

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2712783
Share on other sites
700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted

The calculation is worked out on the RPM using the following method.

Power of car x(by) 3/4 =RPM of test.

I think by memory also.....no turbo rotary(RX) can pass the test because RPM of there test is like at 7000 :ninja:

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2713066
Share on other sites
700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted
come on guys it's so not hard to find the LEGISLATION on the internet.

speculation is hopeless.

http://epanote2.epa.vic.gov.au/EPA/Publica...;FILE/317.1.pdf

edit: nissan engines Page 63

My computer nearly crashed....please....don't open it :D .

If it is that long....it has no worth to me.... :D

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2713893
Share on other sites
khunjeng Veteran

khunjeng

Posted
  • Author
Posted

its 4800rpm for the RB25...you could have just asked...I got it tested 2 times this week...

twin system in the mix...I'm getting my V2.0 system tested by my mate just to see what it does with silencers and without..

Link to comment
https://www.sau.com.au/forums/topic/145112-epa-and-zorsts/#findComment-2715315
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


  • Latest Posts

    • DatsunBanana
      Rear subframe stay bracket bolt removal issues

      By DatsunBanana · Posted

      Drilled the rubber out on a slow speed and it didn't catch much at all. Probably only half a dozen holes was enough to shred the rubber and it dropped off easily leaving the inner sleeve behind. Will tackle that later
    • Shizu
      Returning after a long time!

      By Shizu · Posted

      I havent bought a manual cover for the dash yet and no cluster change, won't bother me too much, I just need to get that auto box gone, manual in! I miss my manual. 🤪. We started last weekend and managed to get the box out. Planning to start putting it in this weekend and then order a single piece tail. We were super careful to take time and not damage anything. It's my first time working under the car.  With my S15 mainly worked in the bay. This time, it was a headache because of three or four bolts only. They simply didnt want to leave thei homr and the one securing the tailshaft, another above the GB, and the one securing the lipstick was a shit. Mates mate, Davo caught fire 🤣, nearly opened his chest up with a grinder 🤦🏽‍♂️ and both mates nearly had a plate from the box land and slit their head open. Fun times. We all survived. Not the easiest working with limited access on jackstands. As I'm sure we can agree these are the memories which make us love our car. For all three of us, was an awesome weekend and Sunday 3.30am before tools down was a fantastic effort. I need to upload pics, but looks like it needs to be via Url now. We used to be able to just upload pics back in the day. It's been that long! 🤪 Im currently spraying rustoleum under body, not because it's rusted. It's super clean, but just so it's protected for the next 10 years. There was a few surface rust spots. Which pretty much wiped off with a 3M scourer.  Really impressed with how well the previous owner maintained it. Bank account went down so quick! Service, then GB - managed to get a spanking new 34 genuine box from Nissan. All the rest of the conversion parts from Kudos.  Went with a Nismo short shifter. New pedals and Exedy Clutch and FW. Ordered the Prp Rear Main Retainer kit which should arrive Friday and my first engine mod part just like I did with my S15 will be the Tomei Expreme Turbo Outlet. Already on order. It'll likely sleep next to me on a pillow during the coming months. 🥰 Last build was on my JET200GT profile and on SAU and Hardtuned I had documented the build. Planning to try to do that again. Brands feel scarce now. Wish we still had ARC and Apexi parts readily available. Exhaust - need some advice on this. I had an Apexi exhaust on the S15 and loved the tone. My mate had a HKS HP Silent on his 33 and suggested I go with that to avoid drone. I can't remember hearing an RB25DET running that so will likely need to wait for a meet or something to hear it.  Not after big power, just enjoy building it, and drivability with minimal negative attention.
    • Milkmun
      Hello fellow enthusiasts

      By Milkmun · Posted

      Have a chat with Ben at Moore Performance or Jesse at JS Performance.
    • DatsunBanana
      Rear subframe stay bracket bolt removal issues

      By DatsunBanana · Posted

      Thanks both. All good advice. Reminds me of drilling through stone wall for drainage pipe 😬 I'll let you know how I get on if I still have use of my hands afterwards 😅
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Finally got shipping number for the intake and throttle body, shipped by UPS, so "should" be in my hands sometime next week, fingers fracking crossed
×
×
  • Create New...