Spark Plugs -- Massive or Fine Wire

[daytonabch04]

I’m at oil change now and was just told 4x fine wire spark plugs were cracked at the base. My annual was only 30-40 hours ago and somehow missed. Of course they don’t carry fine wire plugs on hand so he recommended switched either 6 or all 12 to massive spark plugs. I chose to switch all 12 instead running 6 and 6 of each. I run mostly ROP so hopefully I won’t see too many issues over the short term. 

[alextstone]

I’m at oil change now and was just told 4x fine wire spark plugs were cracked at the base. My annual was only 30-40 hours ago and somehow missed. Of course they don’t carry fine wire plugs on hand so he recommended switched either 6 or all 12 to massive spark plugs. I chose to switch all 12 instead running 6 and 6 of each. I run mostly ROP so hopefully I won’t see too many issues over the short term. 

What brand were the fine wires?

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[LANCECASPER]

4 hours ago, daytonabch04 said:

I’m at oil change now and was just told 4x fine wire spark plugs were cracked at the base. My annual was only 30-40 hours ago and somehow missed. Of course they don’t carry fine wire plugs on hand so he recommended switched either 6 or all 12 to massive spark plugs. I chose to switch all 12 instead running 6 and 6 of each. I run mostly ROP so hopefully I won’t see too many issues over the short term. 

My Bravo runs much smoother on fine wire plugs. The cracks would have happened on fine or massive if over-torqued.

[daytonabch04]

On 11/20/2020 at 6:26 PM, alextstone said:

What brand were the fine wires?

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Champion

[Danb]

Lance my Bravo also runs great on tempest fine wires also, I had Champion fine wires for 120 hours of which 4 of 12 failed switched to tempest with perfection 

[Seth]

I haven't read anything - but wanted to quickly chime in.

If running ROP, it doesn't matter. 

If running LOP, fine wire tempest made such a difference over massive champions for me in an IO550A.

So much so that I'm amazed by it. I could run LOP but could "feel" it ever so slightly with the champions. With the tempest, there is no way to tell I'm running LOP from the feel. It runs just fine. Significant fuel savings for just a few knots slower and a cleaner running engine with no negative vibration.

 

-Seth

[Cruiser]

Are Tempest Fine Wire plugs approved for the IO-550G engine ? 

[carusoam]

9 hours ago, Cruiser said:

Are Tempest Fine Wire plugs approved for the IO-550G engine ? 

Let’s see if @StevenL757 is around (fine wire question)

Best regards,

-a-

[StevenL757]

9 hours ago, Cruiser said:

Are Tempest Fine Wire plugs approved for the IO-550G engine ? 

Yes

You need Tempest part# URHB32S