Aussieveedubbers · Non-VW Engine Conversions

EJ 22 Powered Manx - Video

https://forums.aussieveedubbers.com/threads/40884/ej-22-powered-manx-video

Brad ·

EJ22 Manx Fires up !!

Here is the EJ 22 Manx that we finished a while back ..

MikeM ·

Got any video of it driving down the street :thumb

helbus ·

Our kombi is gonna sound mean like that I hope

Brad ·

that video is with a cat and a hotdog only

helbus ·

It is still gonna sound meaner than a VW 1800 🙂

pete wood ·

😎
um, is that legal?

MikeM ·

um, is that legal?
yeah, why wouldn't it be?

3 x 750kg = 2250cc

pete wood ·

Actually, I meant the noise of the exhaust. I know the EJ22s are legal.

Baldy67 ·

sounds great brad

Jak Rizzo ·

Does sound awesome.
Mine seems half that noise & I only just passed the sound test. Was allowed 96db & I got 93.3db.
Is it different in QLD Brad?
regards
Jak

Alex Holzl ·

i got "96"!! how funny... 😎

Jak Rizzo ·

Alex Holzl wrote:i got "96"!! how funny... 😎
U are funny Alex!

MikeM ·

Jak Rizzo wrote:Mine seems half that noise & I only just passed the sound test. Was allowed 96db & I got 93.3db.
Is it different in QLD Brad?
regards
Jak
The difference between 93.3 and 96 is actually quite significant. Db is measured on an exponential scale.

In simple terms (the rule of 6)

+6dB = double the original value = 200%

- 6dB = half the original value = 50 % etc.

So 96 Db would be about 1.4 times as loud and 93.3Db(roughly). So Jak you car would only be 70% of the volume of a 96db Car (again roughly)

That's my intelligent post for the day 😀

Jak Rizzo ·

Thats really interesting Mike, but we made mine hit 96db by rasing the rev limit, & I can tell u now, it was nothing like that buggy.
At the end of the day, it sounds great!
regards
Jak

MikeM ·

Jak Rizzo wrote:Thats really interesting Mike
Are you pulling the piss outta me? :duh

Baja Wes ·

this is off-track somewhat so I won't go into it, but 6dB is a doubling of the sound pressure level.

However doubling the sound power level is only an increase of 3dB.

But what matters is apparent loadness to a human, and I think that double the volume to the ear is more like a 10dB increase.

That's why even though a 200W speaker has twice the power of a 100W speaker, and therefore is a 3dB increase (double the power), it does not sound twice as loud to the ear.

Jak Rizzo ·

MikeM wrote:
Jak Rizzo wrote:Thats really interesting Mike
Are you pulling the piss outta me? :duh
No, I found it interesting, hence i wrote, "thats really interesting".
Theres no "feeling" in this typing thing is there?
regards
Jak

76camper ·

DAMN that sounds good, record it taking off from stop if its manual!