MSD Knock sensor
#1
SORE MEMBER
![](https://www.offshoreonly.com/forums/images/icons/platinum_member_star.gif)
Thread Starter
Join Date: Apr 2004
Location: 29°50'49.74"N 95° 5'17.55"W.......TEXAS
Posts: 6,989
Likes: 0
Received 1 Like
on
1 Post
![Default](/forums/images/icons/icon1.gif)
Has anyone tried the msd knock sensor on a boat motor?
here is a link http://www.msdignition.com/tool_8.htm
having detonated a fresh engine with probably bad gas I was considering this.
here is a link http://www.msdignition.com/tool_8.htm
having detonated a fresh engine with probably bad gas I was considering this.
#2
Registered
Join Date: Nov 2004
Location: wolfeboro nh
Posts: 58
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
the msd when i looked at them wasnot set up for marine . i ended up getting some from Anson ,i got them thru gaffrig marine..did same thing with a melt down from a restricted fuel line fitting.. good luck
#3
Registered
Join Date: Sep 2001
Location: Houston, TX, USA
Posts: 2,287
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Got one in boat. Problem is you can not hear it between the exhaust noise & the wind noise. There is an adjustment for sensivity but I have never felt is was right. When I cruise at 3K the gauge is going wild saying detonation. When I am WOT it does not show detonation. When I am running hard it is hard to look at it. Has it saved me from tearing up a motor? Nope!
#4
Charter Member
![](https://www.offshoreonly.com/forums/images/icons/charter_member_star.gif)
Join Date: Oct 2000
Location: Central, Ohio USA
Posts: 1,074
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
I run them on both engines with gauges and idiot lights. I had to try several different senders before I found a set that would not go off above 5700 rpm. This was before I found out that the torque on them is important.
I had one go off at 4000 rpm when a lifter quit working.
I had one go off at 4000 rpm when a lifter quit working.
#5
SORE MEMBER
![](https://www.offshoreonly.com/forums/images/icons/platinum_member_star.gif)
Thread Starter
Join Date: Apr 2004
Location: 29°50'49.74"N 95° 5'17.55"W.......TEXAS
Posts: 6,989
Likes: 0
Received 1 Like
on
1 Post
![Default](/forums/images/icons/icon1.gif)
Originally Posted by rbtnt
I run them on both engines with gauges and idiot lights. I had to try several different senders before I found a set that would not go off above 5700 rpm. This was before I found out that the torque on them is important.
I had one go off at 4000 rpm when a lifter quit working.
I had one go off at 4000 rpm when a lifter quit working.
are you running the msd? if so do they have an external trigger for a pro-light. I found the unit that Livorsi sells (anson?) $600+. A little out of my budget. The MSD unit is about $170.00.
thanks guys.