breaking hydraulic dampeners like crazy

[turbokcar]

this is the third time its happened.. every time i start boosting the motor... i know my af's are good i just installed an air fuel gauge... its like clockwork.. first the #4 cyclinder intake valve, then the number 3 a couple days later, then after a month of driving fine #2 goes... im starting to believe the pieces are tempered from being overheated and now are brittle... ? ive just been replacing them with dampeners from another head.. so maybe this time ill replace all the remaining ones...

this happen to anyone else?

Paul

[1985ShlbyChrger]

you mean lifters? Our cars don't have hydraulic dampeners. I would just replace all the hydraulic lifters at one time ot eliminate failure opportunities.

[allmotor]

could be caused by valve float, or sticky valve guides. I had this same problem on my race engines when the valve springs got week. I started to replace all the springs mid season and never had a failure again

btw, they are lash adjusters not lifters, lifters ride directly on the cam