Search the Community
Showing results for tags '409ccs'.
Found 1 result
-
Okay.. as most know I just finished the overhaul of my front forks including the installation of Progressives ( man, are they worth it !!) . I had a question about the fork oil and from what I was told there was 2 ways to determine the "amount" of oil. First was the amount of 409cc's or 13 1/2 oz. The second, was 5 1/2 -inches from the top. The 5 1/2 inches was what most threads stated and what the instructions stated. That is what I installed the oil to. It was way more than 409cc's. Now, yesterday we installed Progressives in my friend's 83. We measured and installed 409cc's in each tube. They were not even, even close to even. So we pumped the lowers and then remeasured and the levels were even but not to 5 1/2 inches, more like 6 1/2+ inches below the top. Now, we read the manual, the threads, the Progressive instructions, and all though they all state to "pump the lowers to extract the old fluid, none state to pump the air out to measure the new fluid. It was obvious that when we installed his oil, air bubbles must have affected the 5 1/2 inch reading and leveled it out after pumping the air out. None of the info we could read, stated what the level from the top should be once they are "pumped" For example, if you just wanted to check you levels of existing oil, to what level should the oil be at from the top ?? It seems that there should be a level statement as to before pumping and after. I had the same issue of non level measurements when I poured in my oil before pumping the lowers. It probably took about 15 + oz to level mine out to 5 1/2 inches below. We left his at 6 1/2 inches below with the original 409cc's. So what am I missing here ?