Join Date: Sep 2006
Location: Austin, Texas, USA
If you actually do get it apart, I think you'll find that the bore in the cylinder is trashed. I had a problem with my original rear cylinder on my '85. A new master cylinder cost double what the rebuild kit cost, but it was worth it since the original was pitted and would not have resealed with just a kit.
'17 R1200RS, 2 yrs. 27,000 mi.
'16 R1200RS, 18 mo. 28,000 mi. (gone)
'03 R1100S Boxer Cup Replika 6/200
'85 K100/1100RS, 34 yrs. 326,000 mi.
'05 R1200ST, 8 yrs. 57,400 mi.-3rd deer killed it.
'11 R1200RT, 2 yrs. 30,000 mi. (gone)
'99 R1100S, 2 yrs. 15,000 mi. (gone)
'96 Ducati 900SS/SP, 12 yrs. (gone)
500,000+ BMW miles