Knock sensor, any other solution? standalone knock sensor log or visual? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-26-2007, 04:10 PM   #21
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Yup. The original KnockSense will drive an LED. $50, plus $25 for a sensor.
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Old 11-27-2007, 04:30 PM   #22
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hello
I am planning on getting the Knocksense unit. The guy asked me to supply the engine bore he said "Each unit is individually optimized to the engine bore so please supply the approximate bore size in millimeters" i have a 2001 miata and how can i find that out. He said that he might do a discount if more than 25 people are willing to buy. Anyone interested?
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Old 11-27-2007, 05:48 PM   #23
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The 1.8 Miata engines have a bore diameter of 83mm.

The 1.6 is 78mm, in case anybody was wondering.
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Old 11-27-2007, 06:56 PM   #24
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Originally Posted by musanovic View Post
hello
I am planning on getting the Knocksense unit. The guy asked me to supply the engine bore he said "Each unit is individually optimized to the engine bore so please supply the approximate bore size in millimeters" i have a 2001 miata and how can i find that out. He said that he might do a discount if more than 25 people are willing to buy. Anyone interested?
Just buy it straight up. You'll wait a lifetime for 25 people to pony up the money. I mean, you're not talking about big thick aluminum radiators for $160 for hecks sake.
The knocksense will work with your stock sensor. The bore doesn't really matter, you have to tune it yourself anyway.
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Old 11-27-2007, 07:16 PM   #25
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The bore doesn't really matter, you have to tune it yourself anyway.
There are two adjustments on the KS- frequency and sensitivity (gain).

Boris sets up the bandpass filter to match the calculated knock frequency of the block before he ships out the unit. Then it's up to the user to adjust the sensitivity once the device is installed.
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Old 11-27-2007, 07:39 PM   #26
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Good to know, thanks. Guess that's why it's a tuned circuit out of the box
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Old 11-28-2007, 07:13 PM   #27
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ordered one (knocksense) we'll see how it works out. it was 53 shipped. good deal.
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Old 11-28-2007, 10:02 PM   #28
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You'll wait a lifetime for 25 people to pony up the money. I mean, you're not talking about big thick aluminum radiators for $160 for hecks sake.
lol......sorry i had to, MUSANOVIC is a very good friend of mine
cjernigan, can i apply this to my sig please? i dont know why this makes me laugh so much, am i the only one that found it funny?
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Old 11-29-2007, 05:45 AM   #29
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I have bought older J&S unit with monitor.
Havnt had time for installation yet.

My plan is to measure monitor signal voltage
and adapt this to EMU for ign retard.

Before I will ask J&S guys which voltage range they use
for the LED monitior.


Falk
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Old 11-30-2007, 12:38 PM   #30
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FM is selling a J&S for $150 with wiring and sensor.

http://www.flyinmiata.com/dealoftheday/
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Old 11-30-2007, 03:45 PM   #31
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'Tis gone. I sure hope someone here bought it, as that was a great deal.
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Old 11-30-2007, 03:49 PM   #32
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'Tis gone. I sure hope someone here bought it, as that was a great deal.
A MS V2.2 is cheaper than that JS unit. Add a knocksense and you've got some serious engine managment. Not another bandaid.
It was a good deal though.
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Old 11-30-2007, 03:52 PM   #33
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A MS V2.2 is cheaper than that JS unit. Add a knocksense and you've got some serious engine managment.
Yeah, but for someone using an AFPR and not wanting to go full-ECU, it would have been nice. Hell, even I haven't manned up and taken the MS plunge. Yet...
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Old 11-30-2007, 04:02 PM   #34
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man up!!! lol
i havent even installed my MS yet and im wondering about knocksense
im gonna have to do that, once the motor is built that is, i see no use for it yet
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Old 11-30-2007, 04:32 PM   #35
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If someone knows the guy who bought the FM J&S,
I have the monitor for this unit and dont use it.

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Old 11-30-2007, 05:29 PM   #36
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oh? Is it the nice round monitor or the ugly square one? If it's the round one I might be interested.
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Old 11-30-2007, 06:15 PM   #37
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Do it Joe. We need someone to build circuits that do all kinds of crazy stuff in the community.
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Old 11-30-2007, 06:24 PM   #38
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Yeah, but for someone using an AFPR and not wanting to go full-ECU, it would have been nice. Hell, even I haven't manned up and taken the MS plunge. Yet...
Joe, you're one of the guys I consider a good source of knowledge; no way that I may end up running around with an MS hooked up (mind you one made by my guru Chad) before you do. You have to take the plunge so I can ask you dumb questions

Speaking of dumb questions: where do I hook up my Knocksense Chad?

Cheers,

Rafa
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Old 11-30-2007, 06:37 PM   #39
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You've got email Rafa.
I'm no guru, i just build them.
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Old 11-30-2007, 06:41 PM   #40
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You've got email Rafa.
I'm no guru, i just build them.
In my book you are. You've already proven than when it comes to Miatas one only has to ask you to get answers. BTW, where do I connect my Knocksense tomorrow?

Thanks
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