Originally Posted by WyrTwister
Originally Posted by OVERKILL
Originally Posted by KrisZ
Nothing wrong with pushrod engines. Like any engineering solutions, they have their advantages and disadvantages. OHC engines, although seen as modern, have a lot of disadvantages that keeps the pushrod engines employed to this day.
There's something to be said for the simplicity and reliability of pushrod mills. GM's success with the LSx family, and its compact nature, as well as Mopar's HEMI have proven it isn't obsolete yet. I couldn't imagine trying to turn a wrench on a comparable displacement OHC mill in my Jeep
My understanding is OHC is more advantageous in high revving engines . Typically , diesel engines are lower revving , where push rod system is fine .
Both my diesels are OHC, one of them, and the one that I bought in 2003 were DOHC