Original blog: Studley's Bloggerydoodaah
[b]Weeehooo !
The barrels are within spec, 0.05 out max. Good news as it means I don't have to go down the rebore road.[b]Had a 10 min chat with an enthusiastic engineer and he made some interesting comments regarding measuring twin pot barrels and also about oil consumption.[b]He's worked on quite a few Harley twin pots and he's convinced that the bore measurements can change once they are fitted and torqued up, in particular the diameter at the lower part of the liner which is unsupported. Up to 0.3mm has been noticed.[b]He also recommended using a special runnin-in oil for the first 60-80 miles after fitting new rings. He's gonna let me have some as he's got 200 gallons of it 
[b]Apparently the oil is designed such that whilst it lubricates it also allows the rings to grab the bores as it were, resulting in a better seal of rings to barrels.Pickin' 'em up on Monday !
[b]Weeehooo !
The barrels are within spec, 0.05 out max. Good news as it means I don't have to go down the rebore road.[b]Had a 10 min chat with an enthusiastic engineer and he made some interesting comments regarding measuring twin pot barrels and also about oil consumption.[b]He's worked on quite a few Harley twin pots and he's convinced that the bore measurements can change once they are fitted and torqued up, in particular the diameter at the lower part of the liner which is unsupported. Up to 0.3mm has been noticed.[b]He also recommended using a special runnin-in oil for the first 60-80 miles after fitting new rings. He's gonna let me have some as he's got 200 gallons of it [b]Apparently the oil is designed such that whilst it lubricates it also allows the rings to grab the bores as it were, resulting in a better seal of rings to barrels.Pickin' 'em up on Monday !