Hi,
In researching various sparkplug information posts/searches in here.
I see that that NGK plugs are recommended.
(With crush washers removed. Is the reason for removing them to get a better oil seal ?)

I will go with these recommendations on my next plug change.

But in the meantime? I have new sparkplug tube 'rubber seals' and perfectly good AC-Delco "R45XLS" plugs (that do cross reference to NGK plug #2635, per "Car-Quest")

So, until I do a plug change? are the AC-Delco's OK ?
If so, should I discard the crushwashers on them ?

Thanks in advance !

_________________
~Spider
1963 Dodge D200 w/225
______________________
"The three great essentials to achieving anything worthwhile are; first, hard work, second, stick-to-it-iveness and third,
common sense."
- -- Thomas Edison

See this post. The metal ring washers are not used on '63-'74 heads. It's to do with electrode positioning and spark plug running temperature, not oil sealing. The ACs will be fine until it's time to change to new plugs; the NGK ZFR5Ns will work a little better.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks Dan !

_________________
~Spider
1963 Dodge D200 w/225
______________________
"The three great essentials to achieving anything worthwhile are; first, hard work, second, stick-to-it-iveness and third,
common sense."
- -- Thomas Edison