Latest Shouts In The Shoutbox -- View The Shoutbox · Rules
  


  Reply to this topicStart New TopicStart New Poll

 Outboard Motor Spark Plugs Thread
NorthportTroller
 Posted: Jan 14 2012, 12:11 PM
Quote
Administrator
Full Name: Paw-Paw
16529 Posts
Joined 29-April 11
Location: Southeast PA
Rep: 156 pts
Awards: 6

Status: Offline


What is the difference between a std plug and a suppressor plug? http://i1220.photobucket.com/albums/dd448/NorthportTroller/Smileys/think.gif

Standard Plug: NGK BP8H-N-10

Suppressor Plug: NGK BPZ9H-N-10


user posted image
PM
bobkyle2
 Posted: Jan 14 2012, 12:24 PM
Quote
BAMF Co-Admin
Full Name: Kyle's my name bish
5751 Posts
Joined 17-May 11
Location: New Haven Il
Rep: 141 pts
Awards: 6

Status: Offline


Most resistor spark plugs use a "monolithic" resistor, generally made of graphite and glass materials, to filter the electrical voltage as it passes through the center electrode. This "filter" reduces RFI to an acceptable level. Although this type of resistor develops from 1000 to 5000 ohms of resistance, there is no significant loss of voltage to affect ignitability at the electrodes in modern automotive ignition systems.

However, outboard marine engines utilizing a CDI system have a much lower voltage output, which would be compromised by a standard resistor plug. Therefore, an inductive resistor is used. In this method, a coiled nickel wire is inserted into the center stem, and held in place by a spring.

This coil basically acts as an electromagnet, inducing a magnetic field around the center stem, creating a natural "field" resistor, and reduces RFI to acceptable levels. This method creates only 40 ohms of physical resistance, compared to the 1000 to 5000 ohms of resistance in "monolithic" resistor plugs.

While NGK Inductive Resistor Spark Plugs cost more than standard resistor plugs, they provide major benefits in late-model marine outboard applications.


PM
bobkyle2
 Posted: Jan 14 2012, 12:25 PM
Quote
BAMF Co-Admin
Full Name: Kyle's my name bish
5751 Posts
Joined 17-May 11
Location: New Haven Il
Rep: 141 pts
Awards: 6

Status: Offline




PM
NorthportTroller
 Posted: Jan 14 2012, 12:31 PM
Quote
Administrator
Full Name: Paw-Paw
16529 Posts
Joined 29-April 11
Location: Southeast PA
Rep: 156 pts
Awards: 6

Status: Offline


So which is best to use?


user posted image
PM
bobkyle2
 Posted: Jan 14 2012, 01:01 PM
Quote
BAMF Co-Admin
Full Name: Kyle's my name bish
5751 Posts
Joined 17-May 11
Location: New Haven Il
Rep: 141 pts
Awards: 6

Status: Offline


Hell i dont know.... I just copy and pasted that chit http://i1220.photobucket.com/albums/dd448/NorthportTroller/Smileys/laugh.gif


What plug does it call for?


PM
NorthportTroller
 Posted: Jan 14 2012, 01:50 PM
Quote
Administrator
Full Name: Paw-Paw
16529 Posts
Joined 29-April 11
Location: Southeast PA
Rep: 156 pts
Awards: 6

Status: Offline


QUOTE (bobkyle2 @ Jan 14 2012, 01:01 PM)
Hell i dont know.... I just copy and pasted that chit http://i1220.photobucket.com/albums/dd448/NorthportTroller/Smileys/laugh.gif


What plug does it call for?

It has both of those listed on the engine label.


user posted image
PM
0 User(s) are reading this topic (0 Guests and 0 Anonymous Users)
0 Members:

Topic Options Reply to this topicFast ReplyStart New TopicStart New Poll