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Author Topic:   New spark plugs for Optimax
JoeyP posted 04-21-2003 01:44 PM ET (US)   Profile for JoeyP   Send Email to JoeyP  
I understand there is a new replacement spark plug for the opti's. Its the NGK Iridium Platinum. Does anybody know what the new gap size is for the 200 opti's on these plugs?
DaddysGirl posted 04-21-2003 08:23 PM ET (US)     Profile for DaddysGirl  Send Email to DaddysGirl     
Should be the same gap as the original plugs. Were they $14 a piece like to orig plugs are?
Lars Simonsen posted 04-21-2003 10:02 PM ET (US)     Profile for Lars Simonsen  Send Email to Lars Simonsen     
I just got them for $10 a piece at Advance Auto. It's still an arm and a leg, but better that $14 a piece.
John from Madison CT posted 04-22-2003 07:22 AM ET (US)     Profile for John from Madison CT  Send Email to John from Madison CT     
My spark plugs for the Yamaha 250hp EFI are $1.39/each at Advanced Auto.
bsmotril posted 04-22-2003 10:23 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
But the Yamaha EFI does not run in a stratified charge lean burn mode like the optis do. When you look at the fuel cost savings over a season's time, it is easier to justify the $51.66 you save in spark plugs for a 6 cylinder motor. Those platinum plugs will last an easy 200 hrs in the 135 Opti's whereas a regular tip plug will last about 50.
JoeyP posted 04-22-2003 08:28 PM ET (US)     Profile for JoeyP  Send Email to JoeyP     
I checked price at dealer today it was $14.50 a plug for the new Iradium . The platinum plug was $28.99 a plug. That was insane. West Marine retails the platinum plug for $19.99 each.
John from Madison CT posted 04-22-2003 08:33 PM ET (US)     Profile for John from Madison CT  Send Email to John from Madison CT     
BSMotril: I get a solid 3-3.25 mpg in my 22' Whaler with the Yammie EFI. I have not heard better with those running Optimax's. In fact, if it is better, it sure can't be by much.

FWIW, I ran the same set of plugs after 200 hours last year, and the engine ran without a hiccup.


bsmotril posted 04-23-2003 09:45 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
What HP and prop pitch are you running?

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