Greetings:
I am coming up to my first valve clearance check. I have the workshop manual in PDF format, but I can't interpret the clearance info. It reads exactly as follows:
Intakes 0,71...15,65 in
(0,05...0,10 mm)
Exhausts 3,56...4,27 in
(0,25...0,30 mm)
I spoke with the BMW dealership here, and he said the metric values are
.05, .10, .25, and .30 mm. That MAY be, but I am puzzled as to the inch values, as they don't appear to convert correctly. How does the 0,71 value relate to the 0,05 value, for example? Also note the 15,65 figure is higher than the 4,27, but the corresponding metric values are in reverse magnitude order. I would appreciate help trying to decipher this information.
Also, are there telltale performance signs or sounds that indicate clearances are out? Another thread had a comment stating valves weren't being checked because they weren't noisy.
Marc
I am coming up to my first valve clearance check. I have the workshop manual in PDF format, but I can't interpret the clearance info. It reads exactly as follows:
Intakes 0,71...15,65 in
(0,05...0,10 mm)
Exhausts 3,56...4,27 in
(0,25...0,30 mm)
I spoke with the BMW dealership here, and he said the metric values are
.05, .10, .25, and .30 mm. That MAY be, but I am puzzled as to the inch values, as they don't appear to convert correctly. How does the 0,71 value relate to the 0,05 value, for example? Also note the 15,65 figure is higher than the 4,27, but the corresponding metric values are in reverse magnitude order. I would appreciate help trying to decipher this information.
Also, are there telltale performance signs or sounds that indicate clearances are out? Another thread had a comment stating valves weren't being checked because they weren't noisy.
Marc