would anyone be interested in a knock sensor setup?
 

k, a couple local DSM guys have been giving me ---- about that "Honda guys" have no knock sensing (or datalogging) to tune our cars properly... so i was talkin to a guy at my work thats going to school for some computer ---- and he said he would look into if i got him a knock sensor to ---- with...well he has been talking to some people (at school and elsewhere) and is really getting exited about making them cuz he thinks he has it figured out and people seem to want them... he was talking about making them with LED's and/or sound/buzzers that would go off when knock is senced...

so if and when he starts to make these would you guys be interested in getting one?? this is NOT A GROUP BUY nor am i selling them (....yet), just seeing if there would be interest in them. feedback would also be nice, like what you would like to see or for it to do (so far it will just warn that there is knock NOT adjust for it)...

Re:would anyone be interested in a knock sensor setup?
 

yea what is it with dsm guys and knock sensors (the ones near me say the same thing)...id be interested, maybe it could show the amount/severity of knock?

Re:would anyone be interested in a knock sensor setup?
 

what i got him started on was: A/F guage style 5 LED setup or something and like a peizo siren when the knock is to a certian point...he said it wouldnt be a problem, but im not sure what he is setting up, i will talk to him tomarrow some more.

btw its sounding like this will be in the $100 range, give or take a couple bucks (depending on the price of the sensor its self most likely)...

Re:would anyone be interested in a knock sensor setup?
 

Education time:

1: What is a knock sensor(i assume from the name that it senses some kind of knocking)?

2: I wouldn't be able to hear the knocking, hence the need for a sensor. What kind of damage is happening because of the knock?

3: Don't obd1 cars have them already?

-Colten <-- Thirsts for knowledge

Re:would anyone be interested in a knock sensor setup?
 

1) knock = pinging = detination.....need anyother explination?

2) if you can hear the knock its pretty bad....and possibly too late...

3) yes, but they are not used in the way that will show you knock...infact some dont read above certin RPMs... also the knock sensor i have is off a 89-92 JDM B16A OBD0...

Re:would anyone be interested in a knock sensor setup?
 

does he realize he would have to vary the alarm point by rpm? otherwise it is mostly useless. The knock threshold goes up with rpm. If he can do this, I'd be interested. I just posted about this on pgmfi yesterday!

http://www.pgmfi.org/phorum/read.php?f=39&i=565&t=565

Re:would anyone be interested in a knock sensor setup?
 

thanks for the info

Re:would anyone be interested in a knock sensor setup?
 

I too would be interested if he can make this work.

Re:would anyone be interested in a knock sensor setup?
 

if he figured that out AND i can use my stock sensor (Y8) i'd get one.

Re:would anyone be interested in a knock sensor setup?
 

well as soon as he figures this ---- out beta testing will be done on my vehicle...also the knock sensor i provided was a Honda B16A unit...so it shouldnt be a problem to use the Y8 unit...

Re:would anyone be interested in a knock sensor setup?
 

Detecting detenation when it already has occured is a bit self defeating, your engine may already be fucked by the time the sensor goes off. Better to predict detenation, by detecting the margin between ignition and piston position. How you might ask, well that is my next pet project. Besides a knock sensor is just a glorified microphone, if there is demand for one I can make it and sell it for 50 bucks probally.

Re:would anyone be interested in a knock sensor setup?
 

Okay, I own a DSM.. and the people giving you ---- obviously don't know much about how the DSM knocks work or how the ecu interpets it.

First of all, the knock routine in the DSM ecu is realllllyyy gay and almost as useless as Hondas expect that its TOO sensitive to environmental situations. Obviously they left out the part about phantom knock too... an ugly phenomenon on a lot of DSM's.

I watch my EGT's more than I watch knock. I'll know something is going dreadfully wrong a hell of a lot sooner if I see temps creeping into the 1500+ range ... and if the knock count shoots up, the damage is most likely done.

anyway thats my opinion on it... I wouldnt go out of my way to cobble a knock sensor on your civic.

Re: would anyone be interested in a knock sensor setup?
 

We are doing the same thing.
Custom ECU with knocksensor input to back off timing when knock is detected.
Just a knock sensor buzzer isnt so cool. Unless you can back off the timing really fast.

Anyways main reason for posting.
Anybody know a cheap source for knock sensors.
Our junk yards dont have em.
Im off to search on digi key. Maybe pick it up with the map sensor we need.

Re: would anyone be interested in a knock sensor setup?
 

Who makes the Honda knock sensor? Maybe call them up and find out who distributes for them...

Might be in the PGMFI Wiki...

Re: would anyone be interested in a knock sensor setup?
 

definitely interested, ive been interested in wiring one up that i could wire into my user input on my zeitronix controller and just figure out how to read the voltages, if you could boil that up for me id dig it. O0

Re: would anyone be interested in a knock sensor setup?
 

Probably the most useful information in this post.