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All 1/4" with barbs on the fittings . Will not come loose. I show a pic of the holes I drilled in the air box the smaller is for a drain may not be needed but hay I was in there
, 1/2"hole for the 1/4" ID fuel line. Plugged the back of the paper filter were the stock line went in. All went well and $28 at Ace they had it all.3 ft of 1/4" fuel line 2 mini clamps 2 90* nipples 1 Tee all with barbs. Thanks Bill G.
These new breathers do not breath as much as the twin cam going by what I felt before the hose install at the breather bolts now it is all out the hose to atmosphere.
Looks Great..
Bill G
Hey hddocfl, what did you use for a catch can, didn't see any pics of that, I seen where you spent $28 at Ace hardware for parts, don't think they have any catch cans but maybe they do, just curious what you are using for a catch can. I do like this simple set up by the way.
All for now Trampas
Hey hddocfl, what did you use for a catch can, didn't see any pics of that, I seen where you spent $28 at Ace hardware for parts, don't think they have any catch cans but maybe they do, just curious what you are using for a catch can. I do like this simple set up by the way.
All for now Trampas
Trampas,
I got the feeling hddocfl left the line open ended from his rite up. Some guys choose to do that.
I had a fella on another forum tell me the catch can was unnecessary, I disagree. I don't like the line open ended myself.
My reason is the oily vapor can blow back and get on the bottom of your bike over time. This attracts crime and dust that then sticks to the underside of your bike.
The catch can filters the vapor through foam allowing the vapor to go out the top of it clean ( through the little holes around the top).
The oily water vapor sludge stays in the catch can. You just got to service it once in a while. Fast and easy to do.
Maybe hddocfl will chime in on weather he did or did not add a catch can or a filter.
On another note my set up with the catch can is working out great and working flawlessly.
Ride Safe My Friends,
Bill G
I ran it right to the atmosphere no catch can, I have done it this way for decades never had a problem the hose extends down low of the frame. Doc
Well after another 50 miles the oil has showed up at the end of the hose, just like all my other bikes have done, No oil showing on the frame and after sitting all night not a drop on the floor, My other rides would always leave a drop maybe with more miles this will happen. Thanks Doc
I like the catch can option but I had something happen these past couple of days that makes me a bit leery of the mod. The reason is that the large screw holding on the M8 air filter cover on happens to screw into a brass fitting that is imbedded in plastic in the middle of the stock Harley M8 air filter. I was attempting to examine my air filter to see how much oily blow-by was going into that area with 2200 miles on the clock of my 2017 and the darn brass fitting had stripped out of the plastic. I had to take it to Harley and they did what I think what I would have done which was to have one person pulling on the air cleaner housing and another unscrewing the bolt from the loose brass fitting. If I had done the mod that some are talking about in terms of punching a hole in to the bottom of the metal air filter housing, I am not sure how receptive the dealership would have been to performing the work under warranty where they subsequently ended up replacing the defective air filter and did not charge me for any labor to do the repair.
The hole in the bottom of the air box is drilled through plastic. The factory air box is plastic only the air box cover is metal. All the guys at my Dealer here in California includeing the owner thinks the mod I did is great.
A few of them are thinking of doing it to there own M8. The hole in the bottom of the air box is really no big deal and really no diffrent than a drain hole and causes no structural damage.
With that said, every dealer is diffrent. I don't think this mod would be an issue but I could be wrong.
I have had my AC cover off a lot with no issues. It makes me wonder if your AC cover bolt was overtightened or possibly cross threaded a little from the factory.
Ride Safe,
Bill G
"A breather assembly is mounted to each cylinder head to prevent buildup of pressure caused by the downward force of the pistons. Burning crankcase vapor eliminates the pollutants normally discharged from the crankcase...
In the breather assembly, the flow of air passes downward through the labyrinth where most of the oil is separated from the air. It then moves upward through the breather element (4) where the remaining oil is removed. Two small holes in the bottom of the breather housing allow the separated oil to drain back into the crankcase." Page 4-12 of the manual.
The main emphasis of the Crankcase Ventilation paragraphs are highlighting the vapor passing through the breather bolt. However, there seems to be some mechanism with the "two small holes" for some oil being scavenged back into the crankcase? My concerns remain that this whole system was likely engineered for optimal oiling as well as meeting emission standards and it is possible that altering the oil and oil vapor strategies may have some unintended consequences that only engineers could ferret out? The M8 engines have already had some past history of engine oiling problems that were most likely attributed to cobbled up manufacturing but that remains to be seen given the check engine oil lights that continue to be reported? I personally do not want to experiment with certain aspects of the engines performance that might contribute to unintended outcomes. Again, this is just one person's opinion and I didn't stay at a Holiday Inn Express last night or go to engineering school so cannot claim any expertise :xzqxz:.
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