looigi
New member
A compression test won't give you a Yes/No answer to the question of a rebuild. It is only one (and in my opinion not a very good) indicator.
If the engine is running well, isn't a pig to start, doesn't blow smoke, and has good oil pressure and power then leave it alone.
Oil pressure at idle when the engine is hot will tell you if the bottom end (crank, con rod, cam bearings etc) needs attention.
A leak down test is a much better test of the top end than a compression test is. You need a leak down tester and a source of compressed air for this, but it will tell you what component (rings, valves etc) is leaking.
Once you have all the data in front of you, you can make the call on overhaul or repair.
Unless you want to do it anyway of course, haha.
Chris
If the engine is running well, isn't a pig to start, doesn't blow smoke, and has good oil pressure and power then leave it alone.
Oil pressure at idle when the engine is hot will tell you if the bottom end (crank, con rod, cam bearings etc) needs attention.
A leak down test is a much better test of the top end than a compression test is. You need a leak down tester and a source of compressed air for this, but it will tell you what component (rings, valves etc) is leaking.
Once you have all the data in front of you, you can make the call on overhaul or repair.
Unless you want to do it anyway of course, haha.
Chris