knock sensor placement (strut bar install)
06-03-2002, 04:35 AM
#22
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QUOTE
Are there any pictures of how it should be repositioned...like big pictures so there is no confusion?
Here is a link from speedstate.com regarding the position of the knock sensor helper (lol).I would say, if there is any way you can mount it the same way it was then do that. In my opinion, if it didn't matter which position it was in, then they would all be different, or thrown on without regards to position. As you can see in the link they mounted it horizontally.
06-03-2002, 04:47 AM
#23
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pare_john:
It does not matter which direction you point it in.
hmmmm, didn't RANDOM just say it's got to point EXACTLY the same direction? I can imagine if there is some kind of floating point device inside of the unit it wouldn't work on it's side 'cuase it needs to be upright in order to properly operate. However, I have an SR FSTB from KingSafe and i still had to move the sensor sideways contrary to what someone else had posted earlier about SR STB's. I haven't noticed any problems with the engine from a sideways mount. But i wasn't exactly looking for it either. What kind of problems might occur? Hp losses?It does not matter which direction you point it in.
Rich.
06-03-2002, 04:57 AM
#24
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Here are what the sensors do.
Knock sensor - LOcated in block - Detects Knock it engine and then compensated=s by adjusting the timing to correct knock.
Acceleration sensor(knock sensor helper) - Lets the ecu know that the car is experiencing heavy vibration due to road conditions, thus, not letting the ecu confuse road vibration with engine knock.
There fore it does not matter which direction you place it in. What matters is that it stays on the shock tower. This way it can measure road vibration.
Just make sure that you place it on the shock tower.
I hope that this clears everything up.
And by the way, lets stop calling in the knock sensor. call it by the right name. Acceleration sensor.
Knock sensor - LOcated in block - Detects Knock it engine and then compensated=s by adjusting the timing to correct knock.
Acceleration sensor(knock sensor helper) - Lets the ecu know that the car is experiencing heavy vibration due to road conditions, thus, not letting the ecu confuse road vibration with engine knock.
There fore it does not matter which direction you place it in. What matters is that it stays on the shock tower. This way it can measure road vibration.
Just make sure that you place it on the shock tower.
I hope that this clears everything up.
QUOTE
hmmmm, didn't RANDOM just say it's got to point EXACTLY the same direction? I can imagine if there is some kind of floating point device inside of the unit it wouldn't work on it's side 'cuase it needs to be upright in order to properly operate.
Random is right on this point. The sensor does have to stay up right. But is does not matter which direction it points.And by the way, lets stop calling in the knock sensor. call it by the right name. Acceleration sensor.
06-03-2002, 05:26 AM
#26
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QUOTE
Rich:
Rich.
I was also able to get my knock sensor to fit with my SR FSTB. I will take pics tonight and post them tomorrow.QUOTE
pare_john:
It does not matter which direction you point it in.
hmmmm, didn't RANDOM just say it's got to point EXACTLY the same direction? I can imagine if there is some kind of floating point device inside of the unit it wouldn't work on it's side 'cuase it needs to be upright in order to properly operate. However, I have an SR FSTB from KingSafe and i still had to move the sensor sideways contrary to what someone else had posted earlier about SR STB's. I haven't noticed any problems with the engine from a sideways mount. But i wasn't exactly looking for it either. What kind of problems might occur? Hp losses?It does not matter which direction you point it in.
Rich.
But...it doesn't look like original post by TwistedH are the SR FSTB....so it really doesn't matter if it fit for us or not.
personally...even though it my not be the best idea, I would take a dremmel to the thing and cut out a notch for the sensor to fit normally. I'm not a big fan of changing sensor positions...just seems more like bad FSTB design to me.
06-03-2002, 06:22 AM
#27
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John Pare & everyone else.
I've done my testing on this, so I'm not talking out my ass, or stating theory here.
It is NOT an acceleration sensor, it is an INERTIA/acceleration sensor. it DOES matter which direction is it is pointed, and it DOES matter which direction it is orientated. (vertical or horizonal)
The inertia sensor is calibrated to work in the stock position, in the stock location. If you change the direction or orientation of the unit, you change the readings from it. it is designed to record "vertical" movment and forward back movment. If you mount it 90 degrees on it's side, it is recording LATERAL and forward back movement.
Try a little experiement. Remove the sensor and mount it vertically, horizontally, sizeways, or any other way you want. Then try a full throttle run down a bumpy road. Then return the sensor to it's proper orientaion, and then do the same full throttle run down the same strech of bumpy road. you will notice a HUGE difference in performance.
If you hook up your OBD-ii cable to record during both runs, you will notice that the timing is cut WAY BACK on the run with the sensor in an improper postion compared to the same run with the sensor in the stock position/orientation.
The reason is that the sensor does not record the road bumps, and the ECU assumes it is engine knock, and thus retards the timing.
I've done my testing on this, so I'm not talking out my ass, or stating theory here.
It is NOT an acceleration sensor, it is an INERTIA/acceleration sensor. it DOES matter which direction is it is pointed, and it DOES matter which direction it is orientated. (vertical or horizonal)
The inertia sensor is calibrated to work in the stock position, in the stock location. If you change the direction or orientation of the unit, you change the readings from it. it is designed to record "vertical" movment and forward back movment. If you mount it 90 degrees on it's side, it is recording LATERAL and forward back movement.
Try a little experiement. Remove the sensor and mount it vertically, horizontally, sizeways, or any other way you want. Then try a full throttle run down a bumpy road. Then return the sensor to it's proper orientaion, and then do the same full throttle run down the same strech of bumpy road. you will notice a HUGE difference in performance.
If you hook up your OBD-ii cable to record during both runs, you will notice that the timing is cut WAY BACK on the run with the sensor in an improper postion compared to the same run with the sensor in the stock position/orientation.
The reason is that the sensor does not record the road bumps, and the ECU assumes it is engine knock, and thus retards the timing.
06-03-2002, 06:23 AM
#28
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here's some pics of my strut bar and shock sensor.
Very slight modification, but I didn't reposition anything.
http://www.deckernet.net/tibby/tibby_pics/...frontsensor.jpg
http://www.deckernet.net/tibby/tibby_pics/...strut_front.jpg
And this is way before any of my mods wink
Very slight modification, but I didn't reposition anything.
http://www.deckernet.net/tibby/tibby_pics/...frontsensor.jpg
http://www.deckernet.net/tibby/tibby_pics/...strut_front.jpg
And this is way before any of my mods wink
06-03-2002, 08:17 AM
#30
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Vehicle: 2001 Hyundai Tiburon, 2004 Kia Sorento, 2010 Kia Soul
Decker, I noticed in the second pic that your lower resonator is still on the car. Did you take it off now?