The new unhinged Hemi valve,lol

[Wild one]

Just kidding this is what a stock late model Hemi valve can look like after a valve spring breaks.

 

[04fxdwgi]

Was the MDS being used? A new head gasket and some heavier oil and she'll last another 100k.

 

[Wild one]

Was the MDS being used? A new head gasket and some heavier oil and she'll last another 100k.

That i don't know,but by the looks of the valve it probably happened at idle or just off idle,otherwise i think there'd be more damage

 

[HemiLonestar]

Little heat and some effort, good as new

 

[EriikK]

Yeah I had a valve spring break too. I assumed it was a rare failure, is that not so? My intake valve didn't look nearly that bad and the piston was OK.
I did all the repair work myself but the machine shop bill was substantial -- 16 valve springs, 8 valves, plus machining. And cam and lifters and all the other stuff
I did while I was in there. If it now lasts a long time it was worth it... but it was a big job for sure.

 

[GeauxinUp]

Gorilla glue should fill in that pitted piston pretty well...send it

 

[Wild one]

Yeah I had a valve spring break too. I assumed it was a rare failure, is that not so? My intake valve didn't look nearly that bad and the piston was OK.
I did all the repair work myself but the machine shop bill was substantial -- 16 valve springs, 8 valves, plus machining. And cam and lifters and all the other stuff
I did while I was in there. If it now lasts a long time it was worth it... but it was a big job for sure.

The odd one does break.They're a mass produced product,that is subject to wear.
A valve spring will suffer metal fatigue ,especially if you run the engine hard,and the oil temps run in the higher ranges.
Years ago i stumbled across a test on valve springs,and there was a noticable differance in the life expectancy of a valve spring when the oil temps were at 190 compared to 220.A valve spring creates it's own internal heat when it's being worked,and the only thing cooling it is oil