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magn1t
Posts: 2760
Joined: Mon 04 Feb, 2008 1:15 pm
Location: Upsetting the ricers on youtube 1magnit

Re: Awesome youtube vids

Fri 22 Jan, 2016 4:29 pm

Try this one.

https://www.youtube.com/watch?v=Xl9Q83MSjVk

I know box will be interested.

Barry
quote from barryboys.
Yes, yes, yes, that might be so, but you're clearly missing the bigger picture.....
4 intercoolers!!!!!!!!
Beat that!!!!
 
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box
Posts: 2834
Joined: Sun 02 May, 2010 7:07 pm

Re: Awesome youtube vids

Fri 22 Jan, 2016 9:48 pm

Cool [like] So at 1:00 you've changed from square wave to sine wave which increases the output of the top sensor right? Why's that?
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magn1t
Posts: 2760
Joined: Mon 04 Feb, 2008 1:15 pm
Location: Upsetting the ricers on youtube 1magnit

Re: Awesome youtube vids

Sat 23 Jan, 2016 12:09 pm

It's just the signal generator which has a higher output level with a sine wave than a square wave....it's kitset from d*** Smith/ electronics Australia, K-7340.

The interesting thing driving it with a square wave is that when you break down a square wave into it's components, it's all the odd harmonics up to infinity at decreasing signal levels, all added up together (we learned all that stuff a school at 13 or 14).
So going backwards and doing a downwards sweep from 11KHz, the first resonance is at 3.7 to 3.8KHz, roughly 1/3 of 11.0 to 11.6
The next is 2.2 to 2.3KHz. 1/5 of the frequency, the next is 1/7 which is 1.6 ish KHz.
So , take a 1.6KHz square wave.........
The fundamental is 1.6KHz
The 3rd harmonic is 4.8 KHz.
The 5th harmonic is 8KHz
The 7th harmonic is 11.2 KHz.
It's the 7th harmonic of a 1.6KHz square wave which excites the sensor.


Switching to a sine wave though, none of those harmonic frequencies are present, so you only get a response with a square wave, which is what you get with a shockwave (knock) anyway, which is how they work in a real situation.
No correlation at all with bore size either........it's all bullshit.

Going through some Mitsubishi part numbers E1T15571 through to E1T15579, they're all knock sensors but different tuned frequencies from different engines.
E1T15576 is what comes on a 3.5 DOHC about 11.2KHz
E1T15579 comes on a GDI 3.5 Pajero...it's 7.5KHz.
The bores are the same size but the pistons are completely different.
But......it's the internet.

Barry
quote from barryboys.
Yes, yes, yes, that might be so, but you're clearly missing the bigger picture.....
4 intercoolers!!!!!!!!
Beat that!!!!
 
fastbikes76
Posts: 84
Joined: Mon 07 Oct, 2013 10:07 am
Location: Rainy U.K

Re: Awesome youtube vids

Sun 21 Aug, 2016 9:07 am

:? :?
1997 MK3 490hp/ 530ftlbs. Standard non turbo engine 11.84 @ 115mph and 11.87 @ 119mph. 3.7 seconds 0-60
CLICKY https://www.youtube.com/watch?v=b8kb8voxCNs
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magn1t
Posts: 2760
Joined: Mon 04 Feb, 2008 1:15 pm
Location: Upsetting the ricers on youtube 1magnit

Re: Awesome youtube vids

Sun 28 May, 2017 9:02 pm

Extreme tuners from Greece.
After severe piss taking on some Mitsubishi evo forums over a long period of time, they've just taken out the world record.
That's going to really piss a lot of people off.
It's even destroked to 1.8 litres.
So bigger isn't always better.

But it's still slower than NZs HD2 but that's RWD.

https://www.youtube.com/watch?v=83sKX8gN2vE
quote from barryboys.
Yes, yes, yes, that might be so, but you're clearly missing the bigger picture.....
4 intercoolers!!!!!!!!
Beat that!!!!
 
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Gazza
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Joined: Thu 14 Feb, 2008 9:31 am
Location: Adelaide
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Re: Awesome youtube vids

Mon 29 May, 2017 6:33 pm

Jeeeeesus that looked like a wild ride.  Looked like he was doing a slalom or something.
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au naturel.
 
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Scruffy
Posts: 341
Joined: Wed 06 Oct, 2010 1:41 am
Location: Whangarei

Re: Awesome youtube vids

Mon 29 May, 2017 10:15 pm

lol, the americans love to hate those guys
"GTO's have a turbo?!"
~Mag & Turbo
 
magn1t
Posts: 2760
Joined: Mon 04 Feb, 2008 1:15 pm
Location: Upsetting the ricers on youtube 1magnit

Re: Awesome youtube vids

Thu 14 Sep, 2017 6:40 pm

Busy day at work?

https://www.youtube.com/watch?v=n1yxMFuYwHE

The view from the captain's cabin.

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Turbo and intercooler
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quote from barryboys.
Yes, yes, yes, that might be so, but you're clearly missing the bigger picture.....
4 intercoolers!!!!!!!!
Beat that!!!!

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