Originally Posted By Cab_Burge
I know of another guy in SO CA that worked in a knock lab also, he lead me to use the projected tip spark plugs in iron headed B and RB motors as well as all of the Mopar hemi motors for drag racing and street use work
Same information, different conclusions confused work
I had low compression(true 8.5 to 1) pump gas 350 Chevy boat motor that pinged, knocked, on regular pump gas with a Champion J12Y and quit knocking with a Champion J11Y work
I worked in service stations a long time ago before they became gas stations only and I have seen many stock motors that needed the spark plugs heat range changed for the driver work
Around town only grandma drive differently than there hot rodder grand kids did shruggy
Colder is always safer than a tiny bit to hot when it comes to gasoline and different driving conditions and fuel used work


I agree colder is always safer when balanced against the negative of too cold. Can you explain more on the "same information, different conclusions"? Are you indicated that your source also felt projected tip were more prone to detonation but had some other benefit that outweighed it? Or that the standard plug was more prone?

I guess it comes down to a balance of many factors, like most things. I am still not sure what type of plug to get, but at least they are not too expensive in the grand scheme!