Wrapper

[Bitter]

Originally Posted by jon_570

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..

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.