Spark-it-up

mikebc

Petty Officer 2nd Class
Joined
Apr 10, 2005
Messages
111
Looking for suggustions on the best spark plug, (brand and heat range,) for a '87 3.0 GM Merc I/O 19' ski boat. I mainly do mid throttle cruising and 10% pulling a skier. Also, any thoughts on the extended plugs? Thanks for your thoughts, and experiences!
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Spark-it-up

NGK plug number BR6FS is the Mercruiser recommended plug.
 

trog100

Senior Chief Petty Officer
Joined
Dec 1, 2004
Messages
751
Re: Spark-it-up

projected nose is the term NGK use for such things..<br /><br />i like em as u probably know.. he he..<br /><br />trog100
 
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