New old stock spark plugs,use them?

[Gary H NC]

I have 12 Champion UL77V spark plugs that were sealed in the individual single packages.I know they are very old by the looks of the package and the plugs have a brown stripe around them that i have not seen in years.
I was going to put them in the engine and noticed they all show slight signs of corrosion around the base of the ceramic.
I hate to throw away unused parts but thought i would get some opinions.
Junk them or use them?

 

[5150abf]

Re: New old stock spark plugs,use them?

Doesn't seem like it could hurt anything.
If they don't work you aren't out anything except a little time.
I would use them.

 

[tashasdaddy]

Re: New old stock spark plugs,use them?

if rusted badly it could crack the ceramic insulation, causing then to arc. but try them.

 

[Benny1963]

Re: New old stock spark plugs,use them?

hi gary iran and old new set for awhile but whent to the ql77jc4 and now have a better idle .i believe the ulllv are surface gap not sure but the old new set ran fine for me i got some from napa that closed .
bennyb ps gary is your 175 a crossflow if it is pm me i need to know what you wot timeing sticker on you motor say or whats running good for you
you may have the big bore though.
thanks may pm you
bennyb

 

[Gary H NC]

Re: New old stock spark plugs,use them?

Thanks! No rust just a little white looking stuff around the base of the ceramic.I'll throw a set in and give them a test run next weekend.
I bought all 12 for 6 bucks so if they are bad its not like i'm out much.
I didn't know if they could corrode inside and cause extra resistance.
Still have to do my test run after the carb rebuilds and new coils and wires.
Man i'm ready to go fishing! It was 75 here yesterday and we had company so the boat had to stay home this weekend.
Calling for mid 60's next weekend so i'm loading up the gear next Saturday.

 

[Gary H NC]

Re: New old stock spark plugs,use them?

PM'd you Benny B...

 

[kenmyfam]

Re: New old stock spark plugs,use them?

Most likely be O.K.....but make sure you have a "known good " spare set with you.

 

[Gary H NC]

Re: New old stock spark plugs,use them?

Good idea Ken,That and a plug wrench..
Its hard to find the UL77V plugs around here,everyone crosses them over to a series 831 plug...thats what Napa told me anyway.831 is a QL76V i believe.Not sure what the difference is in them.

 

[ezeke]

Re: New old stock spark plugs,use them?

I think the Champion 831 is the UL77V. Should be on the end tab. The BRP part number is 0384771.

 

[kenmyfam]

Re: New old stock spark plugs,use them?

Good idea Ken,That and a plug wrench..
Its hard to find the UL77V plugs around here,everyone crosses them over to a series 831 plug...thats what Napa told me anyway.831 is a QL76V i believe.Not sure what the difference is in them.

Yes, I assumed on the plug wrench !!! as I never go out without 2 of them. 1 to change plugs with and an old but functional spare one for when I drop the first one and watch it sink !!!!

 

[Gary H NC]

Re: New old stock spark plugs,use them?

Thanks for the part number Ezeke.I looked on Champions site and the 831 does cross to the 77V.

Ken,yes i have watched my wrenches sink before...not fun