i have to disagree.Flashmn said:You wont really get more power from upping the timing, you might get knock though.
Dont lecture me about a F head, theres nothing in them that I dont know.i added 5 degrees timing and felt a marked increase in low end power. the F head design is very knock resistant as well, the combustion chamber is very compact and actualy most of it resides in the dish of the piston
yea i know what the sparkles are :lol: i need to do a compression test, but its not running poorly so i dont think i did any serious damage. its the last time i let anyone else fuss with my car at school, thats for sure!Flashmn said:those small sparkles of aluminium are from your pistons, if you have sparkles on your plugs, you're already suffered engine damage.
I had my car going pig rich, to the point it almost stalled when you pressed the gas, yet my plugs where whitish with a brownish tinge.
and you havent fiddled with it any? likely culprits are...jon_570 said:my motor as it is now..a 4afe..knocks if i use 87 octane gas..i use 89 as of now and it doesnt do it unless its bogged down..
havent fiddled with it none..the spark plugs are the ones that came with it stock..i have tried seafoam..trice..the first time ALOT of smoke and the second tims just a lil..so it cant be THAT dirty...Bitter said:and you havent fiddled with it any? likely culprits are...
incorrect plugs (too hot)
carbon deposits in the combustion chamber, they heat up and stay hot creating 2ndary ignition sources which can cause knock.
check/change all your plugs and try a topend cleaner.
it depends where you fill up at, Mazda was having a hell of a time with their 2.5 V6 getting clogged up with carbon, eventually they and other makers went onto certify ONLY certain gasoline brands as "Top Tier" fuels, which means they have the correct amounts of additives as needed by the automakers. typically 7-11, walmart, flying J, and grocery store gas stations fuels do not have these additives and do not meet the 'Top Tier' specs for fuel quality.Flashmn said:Modern gasolines have cleaners in them and they dont make carbon deposits. thats more/less a thing of the past.