Changing Spark Plugs

[MRS]

When you replace plugs do you coat them with anti-seize or die-electric grease or nothing at all?

 

[bruceb58]

Re: Changing Spark Plugs

I use anti-sieze but there are going to be many on here that call it always-sieze.

 

[MRS]

Re: Changing Spark Plugs

I am asking because it seems like everything on boat motors has heli-coils in it and do not what anything binding up on my motor if I can help it. Thanks for the reply. I do on my car and truck motors use a touch of die-electric grease on the treads but they do not have heli-coils in them. Thanks again...

 

[bruceb58]

Re: Changing Spark Plugs

Name one thing that has a helicoil in it. None to my knowledge.

 

[MRS]

Re: Changing Spark Plugs

These are all factory not repairs all spark plug holes pivot housing assy. I cannot remember but I think the gimbal housing has them also. I just changed the heli-coils in the pivot housing and order them for crowley they are factory not repair.

 

[bruceb58]

Re: Changing Spark Plugs

I thought you said boat motors!

 

[MRS]

Re: Changing Spark Plugs

I think the spark plug holes are in the motor? any how thanks for the anti-seize help....

 

[PiratePast40]

Re: Changing Spark Plugs

MRS,
I have an old Volvo AQ130 and all of the flywheel housing bolt holes have helicoils. There are other areas on the block as well. The older Volvos may be what you're heard about.

I've been told that normal anti-seize has trace amounts of metals in it and should not be used below the waterline because of electrolysis. I was told there was a marine grade anti-seize available but that in reality, marine grease would be just fine. If that's wrong then someone please speak up.

 

[MRS]

Re: Changing Spark Plugs

Pirate, Thanks I think I will just use a little die-electric grease on the treads and then I should be good to go. It is a (190 Candia 4.3 Cobra) the motor still looks and runs excellent hardly any hours on it I just want to keep it this way Thanks again.............

 

[Maclin]

Re: Changing Spark Plugs

Dilectric grease resists electrical flow, should not be used on any grounding threaded connection in my opinion.

Using the recommended spark plug should provide the proper alloy for the threads to not react while screwed into the head and corrode under a dry connection. That coupled with removing and replacing yearly keeps everything replaceable with no potential for siezing.

I'm just sayin'.....

 

[Gary H NC]

Re: Changing Spark Plugs

Use nothing, any thing you would use restricts electrical flow. The plugs are made to be used as is.

Agree.....I have NEVER used anything on the plugs in I/O or outboard engines.
Never had a problem.

Get the AC MR43T plugs and your good to go....

 

[HT32BSX115]

Re: Changing Spark Plugs

I use anti-sieze but there are going to be many on here that call it always-sieze.

Yeah, me too....I use it on my aircraft engine, boat engine, cars, trucks, mowers, etc.......It has always prevented Seize(ing)
Don't use it on SS "plugs" that go into aluminum.

Cheers,

Rick

 

[MRS]

Re: Changing Spark Plugs

Thanks guys I am on my way out to change right now will not add a thing thanks for the advice.

 

[MRS]

Re: Changing Spark Plugs

Gary that is what I got manual said so thats what I got Thanks......(mr43T)