MEGAsquirt A place to collectively sort out this megasquirt gizmo

What a mess, and by mess I mean fun

Old 05-24-2007, 01:17 PM
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Smile What a mess, and by mess I mean fun

Finally finished my EBC and KnocksenseMS wiring.

I'm waiting to hear from innovative about the status of my LC-1, and want to wait for it to come back before I bolt it all back up (I'm rewiring it)

but anyways here's how mine looks right now.

mess of wires:




knocksense unit:




LED (lights with knock events):




Boost solenoid:

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Old 05-24-2007, 01:21 PM
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wow, you really worked hard to use the stock harness. I just made my own for the engine harness and kept the instrument and power harness intact. I like the knocksense LED
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Old 05-24-2007, 01:23 PM
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it looks worse than it is, it's a typical boomslang, however it's all mashed together in one spot to fit under the protective cover....
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Old 05-24-2007, 01:31 PM
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can you go a little bit more in depth about this knocksense. What sensor did you use and where did you place it?

My GTX motor came with a knock sensor and a control box (probably just a filter) and I'm curious if I can use those or if I have to use something that has an existing tested calibration.

EDIT: Nevermind, I found the website, but I do still like to know where you connected the sensor.
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Old 05-24-2007, 01:41 PM
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on the motor mount like this....



I've acutally only just removed the bolt and put a stud in place...gotta finish that bit up later.
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Old 05-24-2007, 01:44 PM
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Hey man I have the same kind of mess. Especially with that switch box of mine. I have the connectors and all of that to build a patch harness which I will be doing as well so I don't have to tap into the stock one anymore. I hate tearing up the stock harness.
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Old 05-24-2007, 02:01 PM
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I have a couple of empty bolt holes on my motor so I guess I will just screw it on to one of those.

What is that gray stuff? JB weld?
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Old 05-24-2007, 02:05 PM
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you did NOT jb weld your knock sensor to your block.
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Old 05-24-2007, 02:05 PM
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it appears to be....

on mounting:
Originally Posted by m2cupcar
I recommend mounting the knock sensor near or at the FM stock location at the motor mount boss. Most recommendations are below crank centerline and away from the font of the engine (pulleys/bearing noise). I've hand mine mounted in four different locations and the noise was definitely worst at the front and top part of the engine. It's now in a motor mount boss and provides good feedback.
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Old 05-24-2007, 02:06 PM
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Originally Posted by y8s
you did NOT jb weld your knock sensor to your block.


no, last time i checked I didn't have right hand drive...
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Old 05-24-2007, 02:16 PM
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Originally Posted by Braineack
no, last time i checked I didn't have right hand drive...
or a green car?
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Old 05-24-2007, 02:26 PM
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hey what do I know, maybe the steering shaft goes around the engine in the NA.

so scott, dont jb weld it.
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Old 05-24-2007, 02:31 PM
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Originally Posted by y8s
hey what do I know, maybe the steering shaft goes around the engine in the NA.

so scott, dont jb weld it.
but why it looks so stable
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Old 05-24-2007, 03:09 PM
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im not, scred in stud, then torque a nut down on the flange....then the sensor, then the second nut, and one lock nut for good measure. I suspect the JB Weld might filter out some noise/knock and get bad readings...
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Old 05-24-2007, 03:55 PM
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Originally Posted by Braineack
im not, scred in stud, then torque a nut down on the flange....then the sensor, then the second nut, and one lock nut for good measure. I suspect the JB Weld might filter out some noise/knock and get bad readings...
well more importantly it's ugly!
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Old 05-24-2007, 05:04 PM
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btw - FM sells their special knock sensor stud individually for the bosch type sensors.
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Old 05-24-2007, 05:11 PM
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yeah I have one here in front of me, and it literally is just a bolt with an allen head and a big *** nut. The bosch sensor is caputured between the big *** nut and the allen head.
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Old 05-24-2007, 05:16 PM
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I gotta get on my wiring...that **** scares the hell out of me though :(

However, I did get my clutch done without knowing what I was doing, and I've done a LOT of research into megasquirt...so maybe this wont be as bad as I think.
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Old 05-24-2007, 06:43 PM
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Originally Posted by y8s
well more importantly it's ugly!
And who the chuff apart from me is going to see it? (granted a few people as I've photo'd and and posted it on a forum but you get my point)

Anyway I've not JBwelded it to the block, I've used JBweld to attach a bolt onto the block and the knock sensor is sitting on that bolts thread and torqued down with a nut and washer at both ends.

I don't see how the JBweld will filter anything out considering how hard it becomes once it's cured.

Some people need to get in the DIY spirit considering they're all using a DIY ECU
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Old 05-24-2007, 06:49 PM
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Originally Posted by magnamx-5
but why it looks so stable
Like you'd know, have you actualy built any of your ECU or did you get someone else to do it for you?

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