hey gents ! after service for a new season - pulling the drive , cheking allignment, gimbal and bellows , engine and drive oil and plugs change ... i made yesterday my first ride and the boat runs great . ( 2006 sundancer 240 5.0 mpi b3 )
i take good care of the boat but do not "overbaby" ist so i change plugs only every other year and i struggle to believe in the mighty and expensive iridium plugs mercruiser calls for . ( tr55 ix )
i had ngk tr55 installed and i replaced with ngk tr55 ( non iridium) - the iridium would be tr55ix
last year the engine had with one year old plugs a very slight vibration at trolling speeds about 1600 rpm which i disregarded as "nature of the beast" , to my surprise with brand new plugs it runs now noticeable smoother . further , even when its very subjective and depends on load and conditions , i could swear it has a little better hole shot and with full water tank but little fuel and two person aboard i squeezed 64.3 kmh ( +40 mph ) at 4850 rpm out of her .
i never saw this numbers last year with very similar load ( it was more 62 kmh , 39 mph at 4700 ) - all gps speeds.
due to my understanding the best plug in this world at WOT cannot do more than ignite the mixture . how hard it bangs inside the cylinder is not plug dependant but my boat seems to very appreciate brand new plugs .
are the us v8 blocks indeed such plug sensitive and would be it worth buy the in europe very expensive iridium plugs for maybe even more better engine run ?
what is your experience in iridium / non iridium plugs , and do the v8 eat plugs ? ( my old ones were only about 90 hours / two years but there is like said some difference with brand new plugs )
thanks for sharing your experience with this !
i take good care of the boat but do not "overbaby" ist so i change plugs only every other year and i struggle to believe in the mighty and expensive iridium plugs mercruiser calls for . ( tr55 ix )
i had ngk tr55 installed and i replaced with ngk tr55 ( non iridium) - the iridium would be tr55ix
last year the engine had with one year old plugs a very slight vibration at trolling speeds about 1600 rpm which i disregarded as "nature of the beast" , to my surprise with brand new plugs it runs now noticeable smoother . further , even when its very subjective and depends on load and conditions , i could swear it has a little better hole shot and with full water tank but little fuel and two person aboard i squeezed 64.3 kmh ( +40 mph ) at 4850 rpm out of her .
i never saw this numbers last year with very similar load ( it was more 62 kmh , 39 mph at 4700 ) - all gps speeds.
due to my understanding the best plug in this world at WOT cannot do more than ignite the mixture . how hard it bangs inside the cylinder is not plug dependant but my boat seems to very appreciate brand new plugs .
are the us v8 blocks indeed such plug sensitive and would be it worth buy the in europe very expensive iridium plugs for maybe even more better engine run ?
what is your experience in iridium / non iridium plugs , and do the v8 eat plugs ? ( my old ones were only about 90 hours / two years but there is like said some difference with brand new plugs )
thanks for sharing your experience with this !