Spark plug washer ring

[6t6slodart]

Is the general concensus that you should take off the spacer ring that comes on the plugs when new before install, or leave it on? I've heard both ways! Thanks!

 

[khryslerkid]

It's not a spacer ring, it's a gasket. Leave it on!

If you have heads with taypered plugs there isn't a gasket. The plug hole in the head has a taper to match the plug. You won't get a plug with a gasket/ring to go all the way in.

Heads that take the plug with the ring on it has a flat seat in the plug hole.

These are the 452 passenger car heads. Plugs with a ring or crush gasket. See the recess...

This head takes the taypered plug without a gasket/ring.

 

[Fran Blacker]

Leave them on as KK said except Hemis.

 

[moes]

I would keep them on the spark plug. Those metal rings are the crush gaskets, so it creates a seal between the spark plug and head and if you don't use them you will end up with more thread stress.

 

[69a100]

Leave them on as KK said except Hemis.

And /6's with the drool tube heads!

 

[toolmanmike]

Leave them on as KK said except Hemis.

And some slant 6's

 

[6t6slodart]

Thank you guys, appreciate the feed! It's unanimous!

 

[khryslerkid]

Thank you guys, appreciate the feed! It's unanimous!

...unless you have a Hemi or a slanted six with the tubes.

(You never stated what you were working on)

 

[6t6slodart]

The engine is a '68 383 !