I know what TDC is, and I know what BTDC and ATDC is. What is UDC?
I used the search and found that IGN is the 4* advanced or BTDC and that UDC is 0* TDC, but what does UDC stand for?
And then it looks like there is a mark that says "in OP1" whatdoes that mark on the damper mean?
I used the search and found that IGN is the 4* advanced or BTDC and that UDC is 0* TDC, but what does UDC stand for?
And then it looks like there is a mark that says "in OP1" whatdoes that mark on the damper mean?
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