PlainSmart From , joined Dec 1969, posts, RR: Posted (7 years 11 months 2 weeks 15 hours ago) and read 1479 times:
Anyone know the difference between massive vs. fine wire spark plugs? I know the fine wire will last commonly until TBO, but are there performance differences.
Buzz From United States of America, joined Nov 1999, 697 posts, RR: 24 Reply 1, posted (7 years 11 months 2 weeks 5 hours ago) and read 1401 times:
Hi PlainSmart, Buzz here. Well, the fine wire plugs tend to foul less: i'm thinking of 65-100 hp engines on an Aeronca Champ that were made to run on 80 octane avgas... 100LL has 4 times more TEL than what is required.
I didn't see much of a difference on that airplane, we had some fine wire plugs and decided to try 'em.
Normally we see a little bit of "junk" (combustion deposits) deep down in the sparkplugs. But it doesn't cause enough fouling to make a bad mag drop during run -up.
We use massive electrode plugs on the DC-3 i play with, they're about 1/3rd the price of fine wire plugs. It makes a difference when you need 28 sparkplugs per engine.
g'nite
Buzz Fuselsausage: Line Mechanic by night, DC-3 Crew Chief by choice, taildragger pilot for fun
Sponsor Message: 
From , joined Dec 1969, posts, 
Sponsor Message: 
Printer friendly format
