NC supercharger storys and lies

Discussion regarding Turbocharged and supercharged MX-5s

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Re: NC supercharger storys and lies

Postby mx5racing » Mon Oct 01, 2012 10:11 am

deanb90 wrote:free!?

IM240 test is 100% free of charge at the RMS (RTA) Emissions testing station at Botany or Penrith.

Unlike a full ADR emissions test the IM240 is completed at normal operating temperature and other parts of the full ADR, such as evaporative emissions, are not checked. We have previously completed full ADR 37/00 and 37/01 tests and they are expensive and time consuming. The ADR79/00 and 79/01 tests are even more expensive only few facilities are capable to completing the test. These include Ford Australia where we had one done, VIPAC (formally the EPA Victoria site at Altona where we had another one done….). Orbital in WA does a few 79 and 79/01 tests however unless you have deep pockets it is not financially viable. We had the Mitsubishi Evo 7 and 8 test done there back in 2005/6. Toyota used to do them to however I understand they no longer offer this service to the general public.

Most States and Territories of Australia accept the IM240 test as part of an engineering sign off to ensure cars remains legal for the road. The major exception to this is VIC where Vic Roads and the VIC EPA would require a full ADR test (at considerable cost).

The second issue regards the brakes… The RMS (RTA) has a requirement that once you have a 20% increase over stock you need to do a full brake test on the car. This is a regulated standard overseen by the Dept. of Infrastructure -

http://www.infrastructure.gov.au/roads/ ... 011_v3.pdf

According to the NVDS the NC develops 118 kW at the flywheel. We know a STD one has 91 kW at the wheels. Based on the dyno reports, the SC NC develops in excess of 140+ kW at the wheels with some quoting 160kw plus. As you can see the increase is substantially in excess of the 20% allowed over stock.

Our engineer and I were hoping we could avoid this by supplying "alternate evidence" based on a similar car. I detailed the Mazda 3 MPS, which weighs 30% more, has brakes marginally bigger than the NC and has 70% more power. Unfortunately despite our submission the RTA advised they wouldn’t accept this and a full test was required. Basically this now means we need to do an abridged brake test to ARD31 which is basically a whole heap of stops from 100 km/h.

The NC MX5 will comfortably meet these requirements and we will have this completed in the next few weeks.


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