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I recently purchased an 1984 FXRT with a pulled cylinder stud. In addition I purchases a 1990 EVO motor to replace the 1984 motor. I swapped out the motors and was running the oil lines and started to discover some issues I can't seem to find a good answer on.
Please see below diagram of oil line routing on the early model 1984 FXRT.
There are two oil lines that go into the primary. One is a "T'ed" off line from the oil pump going up the the oil vent tube. The other is routed to the engine case separate from the engine case breather vent. . The issue I am running into is the 1990 EVO motor does not have that oil line attachment on the engine case as the original motor cases had.
I have done some reading about isolating the primary. I believe I could do this rather easy but reviews on the longevity of the fix are mixed. If I did do this and needed the vent the primary how would you do this. In addition since I have a dry clutch in there if I fill the oil just to the bottom of the clutch basket will it be okay or will my clutch go bad.
The other question I had was if I wanted to keep the oil system that is in place. Instead of running the line back to the engine cases could I run the line and "T" it off to an existing oil line? Perhaps the feed line from the oil pump into the oil filter?
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1984 FXRT Primary Oil Line Question
