Compression Readings and Repost
Posted: Fri Feb 19, 2010 8:48 am
Reposting on this site as there is more traffic.
OK - My compression readings are 110-120-114-115-117-113. Truck was warmed up prior to testing. I know a kid and his Dad rebuilt this motor a number of years ago, it runs well, purrs like a kitten when it warms up but before I drop it into my frame off, what should I worry about or do before that exercise? I bought it primarily for the winch and got the motor as a bonus.
I've been concerned as when running the truck, it seems to cut out when reaching higher RPM's so perhaps the governor need's adjustment. It does not have the ETW1 on it. I have one those to rebuild. The plugs all appear to be rather sooty but not wet and it's been converted to 12V.
Charles Talbert's response:
Readings are fairly typical, there is life left in it for sure. Ideally should be no more than 5# variation from one to another, but still ok. What do you mean by cut-out? It could be an electrical issue, for instance loose distributor shaft bushings or distributor shaft cam letting the shaft bounce around a bit. What type of governor does it have? The original would have been part of the carburetor. Many that have had carbs changed to something other than the ETW1 have no governor at all.
__________________
www.mseriesrebuild.com
Charles Talbert
OK - My compression readings are 110-120-114-115-117-113. Truck was warmed up prior to testing. I know a kid and his Dad rebuilt this motor a number of years ago, it runs well, purrs like a kitten when it warms up but before I drop it into my frame off, what should I worry about or do before that exercise? I bought it primarily for the winch and got the motor as a bonus.
I've been concerned as when running the truck, it seems to cut out when reaching higher RPM's so perhaps the governor need's adjustment. It does not have the ETW1 on it. I have one those to rebuild. The plugs all appear to be rather sooty but not wet and it's been converted to 12V.
Charles Talbert's response:
Readings are fairly typical, there is life left in it for sure. Ideally should be no more than 5# variation from one to another, but still ok. What do you mean by cut-out? It could be an electrical issue, for instance loose distributor shaft bushings or distributor shaft cam letting the shaft bounce around a bit. What type of governor does it have? The original would have been part of the carburetor. Many that have had carbs changed to something other than the ETW1 have no governor at all.
__________________
www.mseriesrebuild.com
Charles Talbert