njdaewoo
10+ Year Contributor
- 167
- 1
- Oct 19, 2009
-
Piscataway,
New_Jersey
I just replaced my knock sensor because of my previous knock issues. I still have engine knock! My internals are all stock etc for my comp cams stage 2s. Is it possible that my stock valves are floating causing the engine knock in the 4000rpm range and higher? I have the BR8ES spark plugs and Im only running 20-21 lbs of boost on 93 octane. My timing is set at 8* in the 4000 rpm range (if i go any higher the knocking starts and about 2-4 degrees are pulled) The highest im able to take the timing in the 5-7k rpm range is about 9*. My A/F ratio is 11.3 and adding fuel or subtracting fuel has no effect on the knock. Im about out of ideas to try anyone have anything new to combat engine knock? BTW, the air temps in Sept. is about 77degrees... thanks for any coments...