Not an easy question to answer. Compression readings are greatly impacted by your gauge, altitude, air density etc.
I have seen many places where the compression on a KTM 65 should be at least 135PSI. I live at 7,000 feet, I purchased a cheap Harbor Freight compression gauge. I tested compression on 2 new KTM 65s and 2 Cobra 50s. The KTMs read between 88 and 95 PSI, the Cobras read between 60 and 65 psi. All the bikes run great and have plenty of power.
I know my gauge reads low, I also had to use an adapter to fit the gauge on the cylinder head. From what I understand the adaptor also adversely impacts readings.
I think the best bet calls for measuring compression when the engine is new, record the PSI, date temperature, elevation and gauge used as a benchmark. Check the compression again at intervals, when compression drops by more than 10% from the benchmark consider a rebuild. When compression drops by more than 20% rebuild is imminent.
No compression means time for a rebuild.
A KTM 65 SX should typically have a compression ratio of around 12:1 to 14:1. In terms of actual compression pressure, it can range from 120 to 150 psi when tested with a compression gauge. Maintaining proper compression is crucial for optimal performance, so ensure that the engine is in good condition and that the piston and rings are not worn. Regular maintenance and checks are recommended to keep the compression within this range.
65cc
what oil is used in a ktm 65
Fork oil level for a 2002 KTM 65 SX is 210 cc or 7.1 OZ per leg
no
my sons 05 ktm 65 sx has 5
220 ml
no it does not
According to the 08 KTM Tech Bulletin, .3L of Motorex Top Speed 4T 15W50
KTM 65 SX uses .5 L of Motorex Top Speed $T 15W50
the ktm 65 sx goes 60mph and its faster then the other 65s