Confusing Breather Setup
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Stage I
Joined: May 2018
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From: CA
Confusing Breather Setup
Hello, I attached some photos of the breather setup on a fxsts I recently bought and I'm not sure what the silver cans on each side are for or who made them...I did also have some oily buildup behind the carb backplate and around the breather bolts.
Last edited by flomofo@hotmail.com; May 31, 2018 at 12:06 AM. Reason: Narrative
Elite HDF Member
Joined: Oct 2005
Posts: 3,872
Likes: 83
From: Canton, Michigan
Interesting setup. The cans are either small filters or checkvalves. The oily buildup behind the backing plate is normal, due to how The MoCo designed the whole thing to seal to the heads. You've got an aftermarket carb bracket on there, it may have a pair of o-rings where it mounts to the heads. Check to see if it does. You could add a couple fiber washers to help seal it if not. If the cans are restrictive or clogged, it could also be contributing to excess oil leakage.
Last edited by Hackd; May 31, 2018 at 03:23 AM.
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,626
Likes: 3,389
From: Cental, MI
And, If used in addition to Umbrella Valves... they Inhibit free Breathing... something we avoid at all cost in my little world, almost as bad as Inhibiting return Oil!!!
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Mr. Cro
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