Spark plug question Iridium? Platinum?
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
I just run regular copper NGK plugs in my vettes. The only thing I use a fancier plug in is my 4x4 blazer since they are a pain to change.
Race Director
Joined: Mar 2006
Posts: 14,112
Likes: 28
From: Florida
I don't know what shape your engine is in, but if you are seeing deposits then the engine is either in poor shape or your heat range may be a little too cold to burn them off.
Check this, although using e10 makes it a little more difficult.
http://www.boschautoparts.com/Techni...kPlugFaces.pdf
Here is some more info on plugs
http://www.globaldenso.com/en/produc...log_eu_gbr.pdf
Frankly an engine doesn't care about the spark as long as it lites the mixture adequately. You can can use fancy plugs in an old carb engine or cheapo's in a new fi engine. It's really just a personal/economic choice.
I once lit the mixture with my finger tip accidentally bumping over an engine and it really hurt.
Check this, although using e10 makes it a little more difficult.
http://www.boschautoparts.com/Techni...kPlugFaces.pdf
Here is some more info on plugs
http://www.globaldenso.com/en/produc...log_eu_gbr.pdf
Frankly an engine doesn't care about the spark as long as it lites the mixture adequately. You can can use fancy plugs in an old carb engine or cheapo's in a new fi engine. It's really just a personal/economic choice.
I once lit the mixture with my finger tip accidentally bumping over an engine and it really hurt.
Melting Slicks
Joined: Feb 2006
Posts: 3,428
Likes: 5
From: Japan
Thanks for everyone’s input.
I was not really looking for power gains. Although longer life would be a nice thing.
I was more concerned about keeping the plug clean and not fouled. I mentioned this was a original short block (never rebuilt) so I do get a little build up on the plugs over time.
I have seen demos (plug manufactures) that clams a stronger spark, less prone to foul or build up.
So I am asking the forum members for their advise about the platinum or Iridium plugs from that perspective.
Thanks John
I was not really looking for power gains. Although longer life would be a nice thing.
I was more concerned about keeping the plug clean and not fouled. I mentioned this was a original short block (never rebuilt) so I do get a little build up on the plugs over time.
I have seen demos (plug manufactures) that clams a stronger spark, less prone to foul or build up.
So I am asking the forum members for their advise about the platinum or Iridium plugs from that perspective.
Thanks John
