Home |
Search |
Today's Posts |
|
#1
posted to rec.boats,rec.boats.cruising,rec.boats.building
|
|||
|
|||
Detroit Diesel (DD671N) Questions
Wayne,
First Caveat: I've never worked on any Detroit Diesel engine (that I can remember) Wayne.B wrote: Is there any way to measure compression without removing injectors or other major components on DD671s? Don't know (shrug) Second question: Since the DD671 is a 2 cycle engine, I'm assuming there are no moving valves, just fixed intake and exhaust ports in the cylinder walls. There are exhaust valve/valves in each cylinder in a two-stroke turbo-diesel. See http://auto.howstuffworks.com/diesel-two-stroke1.htm Also see http://www.marineparts.com/partspages/DETROIT/DET12.HTM for a list of exhaust valve part numbers including for the 671. If so, I'm also assuming that any loss of compression would have to be from worn rings and/or cylinder bore. Also correct? See above. Loss of compression could be due to rings/cylinder, exhaust valve, etc. Good luck with it. Don W. |
#2
posted to rec.boats,rec.boats.cruising,rec.boats.building
|
|||
|
|||
Detroit Diesel (DD671N) Questions
On Tue, 24 Jan 2006 22:40:54 GMT, Don W
wrote: See above. Loss of compression could be due to rings/cylinder, exhaust valve, etc. Good luck with it. Things are not at a critical state since they are both running well, but the port side engine is taking a few seconds longer to cold start than it used to, so I'm assuming that something is mildly amiss. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Detroit Diesel (DD671N) Questions | General | |||
Detroit Diesel (DD671N) Questions | Boat Building | |||
Bleeding a diesel engine | Cruising | |||
mastic/sealer for diesel tanks | Boat Building | |||
DIESEL | Cruising |