Question about the older diesel's
My question about the older diesel's is mainly the 5.9 dodge and the ford 7.3, these are a lot louder than the newer diesel. Is there anyway to make them quieter without hurting performance. I mean th...
Forum Discussion
Ivylog wrote:The inter cooler has nothing to do with the sound. The difference is that the earlier engines had single shot injectors, the later motors went to split shot injectors. The inter cooler was added so power levels could be increased , the larger high pressure oil pump was necc to support the higher hp and the split shots which take more oil to run
A pre 99 7.3 is louder than 99 and later because they do not have a inter cooler. Guess you could add one to the older ones and up the HP. Recently asked a guy with 39 years with Ford if The newest PSD,s were any good and he said NO... Not that I wanted to get rid of my 02 7.3 PSD.
