Finally did my breather bypass (pics included)
#301
05-23-2016 | 07:16 PM
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Joined: May 2015
Posts: 2,036
Likes: 278
From: mid Michigan
I had mine on the frame like Greg but it did get oil film on frame & primary. Now just have it hang down can see what's going on that way. Most the time there is nothing but like yesterday did a burn out & there was a drip. Colder days get milky snot or just water drips when in the 40°f
It's kinda hard to see on this side, had to get on the ground to take pic.
It's kinda hard to see on this side, had to get on the ground to take pic.
Last edited by xcbullet; 05-23-2016 at 07:22 PM.
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Stang951 (05-25-2016)
#302
05-25-2016 | 01:34 PM
Thats a good question
But Ill bet the threads are not NPT in the head.
Maybe some one knows for sure
I can look at my old bolts tonight when I get home
Re: Straight Thread Vs. Tapered Thread
I'm not sure if this is the info you are looking for but
a straight thread is the thread you would find on a bolt and nut.
a tapered thread is the thread you would find on water/gas pipe connections.
a tapered thread is a sealing thread.
a straight thread is an axial load bearing thread.
a straight thread does NOT seal by itself but needs a gasket or needs to be part of a tapered surface to seal. an AN/SAE fitting has a straight thread and the sealing surfaces are mating cones.
But Ill bet the threads are not NPT in the head.
Maybe some one knows for sure
I can look at my old bolts tonight when I get home
Re: Straight Thread Vs. Tapered Thread
I'm not sure if this is the info you are looking for but
a straight thread is the thread you would find on a bolt and nut.
a tapered thread is the thread you would find on water/gas pipe connections.
a tapered thread is a sealing thread.
a straight thread is an axial load bearing thread.
a straight thread does NOT seal by itself but needs a gasket or needs to be part of a tapered surface to seal. an AN/SAE fitting has a straight thread and the sealing surfaces are mating cones.
How far into the head does the breather bolt have to go?? does it have to bottom our or can it simply screw partially into the head?
In the meantime since I had to clean my air cleaner anyway and tested out some theories, I went ahead and blocked the holes in my FM backplate with pieces of hose and #10 bolts, washers and nylock nuts. Then I cut the stock breather tubes along with some silicon hose to route the breathers to air. I'll take pics later on.
#303
05-25-2016 | 01:47 PM
Extreme HDF Member
Joined: Nov 2007
Posts: 14,673
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From: East of the Sun, West of the Moon
#304
05-25-2016 | 02:08 PM
Thats what I was thinking..Not plugging the holes, thinking of using a bolt to FPT cap and then NPT to AN adapter. Hoping this idea works. In my head it is the cleanest so far...and I had a few different ideas, so far none of which were easy.
#305
05-25-2016 | 08:51 PM
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Joined: Sep 2011
Posts: 96
Likes: 16
From: Brunswick, OH
I just pulled my filter to check after 2000 miles and no oil and everything was still in place. I used to get a teaspoon or so of oil build up on the inside of the filter and there was nothing. This seems to be working great for me. Hope it works well in yours.
#306
05-25-2016 | 09:34 PM
Last edited by Stang951; 05-25-2016 at 09:45 PM.
#307
05-25-2016 | 10:24 PM
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Joined: Jan 2013
Posts: 2,743
Likes: 416
From: Vermont
#310
05-30-2016 | 02:50 PM
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Joined: Jul 2010
Posts: 282
Likes: 37
From: palm desert, CA
