Knock Sensor ?
01-25-2003, 07:27 AM
#1
Registered
Thread Starter
Join Date: Apr 2002
Location: St. Petersburg, FL
Posts: 103
Likes: 0
Received 0 Likes
on
0 Posts
Knock Sensor ?
Fellas,
I'm almost done building my 509 with 10:1 CR and iron heads. With that said, I'm thinking of adding a knock sensor, but am not familiar with what parts are required. I'm also going to use the Thunderbolt IV (V8-HP 20 deg. built in advance) and the Merc. distributior.
What parts are required and what else should I consider?
As always, thanks in advance!
I'm almost done building my 509 with 10:1 CR and iron heads. With that said, I'm thinking of adding a knock sensor, but am not familiar with what parts are required. I'm also going to use the Thunderbolt IV (V8-HP 20 deg. built in advance) and the Merc. distributior.
What parts are required and what else should I consider?
As always, thanks in advance!
01-25-2003, 10:25 AM
#2
Guest
Posts: n/a
ASD-6!
You need knock sensors with that 10:1 and iron heads unless you have GOOD gas.
Check out MSD. They have a knock sensor set up that is complete and adjustable for sensitivity. I haver used several with good results.
Especially at the biggining of your engine use, PAY ATTENTION TO THE KNOCK SENSOR!! AND THE PLUGS.
Great Boating
You need knock sensors with that 10:1 and iron heads unless you have GOOD gas.
Check out MSD. They have a knock sensor set up that is complete and adjustable for sensitivity. I haver used several with good results.
Especially at the biggining of your engine use, PAY ATTENTION TO THE KNOCK SENSOR!! AND THE PLUGS.
Great Boating
01-25-2003, 01:06 PM
#3
Registered
Thread Starter
Join Date: Apr 2002
Location: St. Petersburg, FL
Posts: 103
Likes: 0
Received 0 Likes
on
0 Posts
Thanks B-1500!
I agree. When you say good gas, are you referring to 93 octane?
I know I'm right on the borderline, but thats the way I operate. I plan to run a mixture of 93 and 100 octane, but that's never the case when buying gas on the water
May have to stash a 5 gallon "pill bottle" of the good stuff for those occasions.
Does one have to mount a sensor on each side of the block, or does one suffice?
I assume the unit you speak of warns you when a knock is sensed? That's fine by me, I'll just have to get the timing dialed in right.
During break in, which will be in the garage on a stand, I'll definetly run AV. gas or 100 Oct. race fuel. After she's in the boat, I'll have to rely on the knock sensor...
I agree. When you say good gas, are you referring to 93 octane?
I know I'm right on the borderline, but thats the way I operate. I plan to run a mixture of 93 and 100 octane, but that's never the case when buying gas on the water
May have to stash a 5 gallon "pill bottle" of the good stuff for those occasions. Does one have to mount a sensor on each side of the block, or does one suffice?
I assume the unit you speak of warns you when a knock is sensed? That's fine by me, I'll just have to get the timing dialed in right.
During break in, which will be in the garage on a stand, I'll definetly run AV. gas or 100 Oct. race fuel. After she's in the boat, I'll have to rely on the knock sensor...
01-25-2003, 01:32 PM
#4
Guest
Posts: n/a
ASD-6, you will have a problem with 10:1, iron heads and 93 unless you "detune" the engine. If you run less compression or aluminum heads, you might be safer. Most people with this combo run less timing. That's OK if it is an emergency, but less compression with good timing will make more hp than less timing with too much compression for your fuel. If you keep the octane up enough, the compression does help. Best Boating anyway 
01-25-2003, 11:09 PM
#6
Platinum Member
Platinum Member
John Pizzuto makes a good system.
Can't remember the website.
He's supposed to be coming out with his latest greatest marine box any month now.
Trying to remember what he calls his units.
Startguard, it seems...
Can't remember the website.
He's supposed to be coming out with his latest greatest marine box any month now.
Trying to remember what he calls his units.
Startguard, it seems...
