dogfish246

I just got AC Delco Professional Platinum plugs that are warenteed for 50000 miles. I am about to put them in but I read that the platinum pucks can melt off and get in the engine. Is this true? Anyone have personal experience with these plugs? This kinda got me nervous but I dont know what to believe...

Thanks

RichS

The pucks do fall off. I've had a few cars that had those plugs and everyone had missing pucks. Even low mileage ones had a few missing.

dogfish246

THANKS!!!! Im bringing them back to pepboys then... Ill go with NGK then...

H P Bushrod

Now you're talking! NGK TR55's or Autolite 606's are the way to go.

dogfish246

Yea, I wanted to stay American/Stock but I dont want little metallic pucks flying around in my cylinders!!!

96GS#007

FWIW, I've used AC Delco RapidFire plugs for years, including my current 383.

RollaMo-LT4

Just think of all those millions of GM cars on the road using the AC Delco plugs without any issues.

This is another case where there have been some reported cases of issues on the internet.
And now the part has a "bad reputation".
But yet, there are far more without issues.

tlong

They are stock replacements and work fine. All AC Delco ignition components make a happy LT1.

1996man

Just wanted to clarify:
I know the OEM ACDelco Platinum 41-943 spark plugs have the reputation for the pucks falling off

However, I dont know if those are the same as the rapid fire plugs.

Looks like AC-Delco part#14 is a platinum Rapidfire plug that is equivalent to the stock 41-943. Do these have the same problem with the puck falling off?

Nathan Plemons

And while you're at it think of the millions of drivers who wouldn't know a spark plug from a lug nut.

Why would anybody knowingly pay more money for a product that has been proven over and over and over to be inferior? Sure there are people who don't know any better but that doesn't make it a good idea.

mtnmanut

E-3enough said

Nathan Plemons

I use NGK for everything that I can.

I use NGK TR55's in the Vette, no platinum, irridium, etc. Reason being that I really don't mind having a plug that only lasts 30,000 miles. $1.99 each and available anywhere. Sounds like a winner to me. Another very good plug is the AC Delco R44LTS. It's a good cheap and reliable plug. Last time I changed plugs I pulled out a set of the R44's. They had been in the car for ~35,000 miles. Considering that the center electrode was rounded completely and the ground strap had a cup carved out of it, resulting in a gap of .080, I couldn't complain any. They would have lasted even longer had I not been running an MSD box. I put NGK's back in. It's generally a matter of what I can find when I need them.

My car has long tube headers which means that spark plugs aren't a HUGE deal. They're a little bit of a pain, but it doesn't make me want to cuss at the car too much.

Now if my car was stone stock I might consider a platinum or irridium plug. Even then though I would not consider the AC Delco platinums because of the puck issue. I have never seen a set of Delco Platinums pulled out of a vehicle, regardless of mileage, that didn't have at least one missing puck per set. Why pay 4x the price for something that is going to turn into a regular plug in about 10,000 miles or less anyway?

Klondike

Hadn't used the Delco's but had some Bosch that came apart at the ceramic insulator. I've never had that happen before on any car! Went with the NGK TR55's and hope I never have to go in there again. Most difficult car I've ever had to change plugs and wires on.

dogfish246

I ended up returning the AC Delcos and I now have platinum NGKs that are going to be installed over spring break!