At what volt level would you consider knock to be harmful.

I made a few runs from 1st thru 3rd at WOT and then did a data log. I looked at it and it seems knock volts stay under 1.75 the whole time except I get 2 knocks at 3.74 at about 5470 rpms in 2nd and 3rd.

Should I be concerned about this as this only happens twice during each of the runs?

Still learning this so feedback would be great. This is at 26 pds of boost on Alky.

Thanks,
Mike

 

Anything over two degrees of knock is generally considered to be cause for concern. And maybe even more so on an Alkied car. So, your 3.74* would make me wanna turn the boost down a tad or roll back the timing a bit above 5000 rpm and maybe try some colder plugs, if you are running 7 heatrange. Better safe than sorry. So you better tone down your Alky tune just a shade.

 

This should be relocated to the AEM forums.