Double Knock sensors???
#1
Exhaust Leak Fixed
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: Tulsa, Oklahoma
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
Double Knock sensors???
ok so i just noticed that the rear rotor housing has a spot for a knock sensor.. so my quetion is could i run 2 knock sensors and just splice it in to the existing wire for knock sensor #1. i would like to do this because i have an extra knock sensor and for the added security since there is nothing to detect knock on the rear rotor.. and the rear rotor is the one that normally goes out. let me know what you think
#2
Trunk Ornament
iTrader: (11)
Knock sensors work on piezoelectric crystals. When hit, they will generate a tiny electric signal. Since the entire block is metal, any knock felt on the block will transmit the signal to the knock sensor regardless of location. And remember, sound travels faster through more dense materials. Yes, it is possible, but it won't do you any good.
#3
Sharp Claws
iTrader: (30)
the RX7 stock knock sensors have no gaurantee of saving the engine anyways, in fact they do next to nothing except retard your timing after your motor is already running on one rotor.
but after thinking about it, tying 2 together may generate a strong enough signal to actually fire up the knock box when an actual knock does occur... hmmm. the stock knock retard system was horrible and was way too slow to react when even moderate knocks did occur because the knock sensors were too unreliable and inaccurate.
but after thinking about it, tying 2 together may generate a strong enough signal to actually fire up the knock box when an actual knock does occur... hmmm. the stock knock retard system was horrible and was way too slow to react when even moderate knocks did occur because the knock sensors were too unreliable and inaccurate.
#4
Exhaust Leak Fixed
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: Tulsa, Oklahoma
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
so karack... in your opinion do you think that adding a second knock sensor "might" improve the knock signal to the factory knock system. and it "might" give me some added security. and it should not adversely effect my car in any way.
#5
Rotor Junkie
iTrader: (5)
It may, but it most likely will not. In either case, the work required to do this really is too much for something like that. You would have to rebuild your engine because only the rear housing has a threaded hole for the sensor, and then use a rear housing in place of the front one. So there's the cost of rebuilding the engine versus the chance that it's really not going to do anything anyway.
#6
Exhaust Leak Fixed
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: Tulsa, Oklahoma
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
actually there is already a threaded hole above the rear trailing plug for a knock sensor. it would be as easy as screwing one in to the empty hole and splicing it in
#7
Can Post Only in New Member Section
iTrader: (2)
Join Date: Jul 2004
Location: Calgary, Canada
Posts: 930
Likes: 0
Received 0 Likes
on
0 Posts
the knock box was engineered to detect the signal from only one knock sensor. so the idea of having a stronger knock is irrelevant. what i think would happen is that it's going to increase how often the knock box is going to retard the timing, 2 sensors = twice the chance of detecting a knock. this is of course if both sensors have the same sensitivity, and not one going off all the time before the other detects anything.
Trending Topics
#9
Exhaust Leak Fixed
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: Tulsa, Oklahoma
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
the knock box was engineered to detect the signal from only one knock sensor. so the idea of having a stronger knock is irrelevant. what i think would happen is that it's going to increase how often the knock box is going to retard the timing, 2 sensors = twice the chance of detecting a knock. this is of course if both sensors have the same sensitivity, and not one going off all the time before the other detects anything.
#11
Sharp Claws
iTrader: (30)
i have no idea if adding the second knock sensor will help or make the knock box too sensitive. referring to my original argument though, that the knock box is a very ignorant system and very crude. as far as i'm concerned it probably wouldn't save a motor regardless of however you try to tweak it to perform better.
#12
Can Post Only in New Member Section
iTrader: (2)
Join Date: Jul 2004
Location: Calgary, Canada
Posts: 930
Likes: 0
Received 0 Likes
on
0 Posts
a capable ECU with a good tune is a far better solution then a second knock sensor, even water meth has better results.
Thread
Thread Starter
Forum
Replies
Last Post
rgordon1979
3rd Generation Specific (1993-2002)
40
03-15-22 12:04 PM