liv2ride
New member
Hello fellow owners/enthusiasts.
Yesterday I conducted the 12k mile service. When checking valve clearance I noted that all valves loosened since the 6k mile service, though some appeared to loosen quite a bit. Below you will find the comparison.
6k Miles
LEFT INTAKE
Upper: .18
Lower: .18
LEFT EXHAUST
Upper: .35
Lower: .35
RIGHT INTAKE
Upper: .20
Lower: .20
RIGHT EXHAUST
Upper: .36
Lower: .36
12k Miles
LEFT INTAKE
Upper: .24
Lower: .22
LEFT EXHAUST
Upper: .39
Lower: .41
RIGHT INTAKE
Upper: .22
Lower: .21
RIGHT EXHAUST
Upper: .38
Lower: .39
Although only two are out of spec on the loose side I will adjust all, with larger shims, to bring more toward center of range.
This being my first BMW I am looking for input on whether this appears normal. How much impact would engine temp have on these measurements? I ask because the 6k was conducted in a closed garage where the 12k was conducted in a car port where there was a steady breeze and cooler temp ~10 degrees Fahrenheit, cooler.
Thanks in advance.
Scot
Yesterday I conducted the 12k mile service. When checking valve clearance I noted that all valves loosened since the 6k mile service, though some appeared to loosen quite a bit. Below you will find the comparison.
6k Miles
LEFT INTAKE
Upper: .18
Lower: .18
LEFT EXHAUST
Upper: .35
Lower: .35
RIGHT INTAKE
Upper: .20
Lower: .20
RIGHT EXHAUST
Upper: .36
Lower: .36
12k Miles
LEFT INTAKE
Upper: .24
Lower: .22
LEFT EXHAUST
Upper: .39
Lower: .41
RIGHT INTAKE
Upper: .22
Lower: .21
RIGHT EXHAUST
Upper: .38
Lower: .39
Although only two are out of spec on the loose side I will adjust all, with larger shims, to bring more toward center of range.
This being my first BMW I am looking for input on whether this appears normal. How much impact would engine temp have on these measurements? I ask because the 6k was conducted in a closed garage where the 12k was conducted in a car port where there was a steady breeze and cooler temp ~10 degrees Fahrenheit, cooler.
Thanks in advance.
Scot
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