FAQ's External Breather Systems for Harley by DK Custom
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- Опубликовано: 3 окт 2024
- Frequently Asked Questions on DK Custom External Breather Systems for Harley Motorcycles. Which to get, How do they extend engine life, reduce maintenance costs, and produces power gains. All for little cost.
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If you race you know about this!
I’m so glad that so many Harley riders now are getting into performance and reliability!
external breathers have been used for decades on Harley's... nothing new about it
@@marvelharris9540 EPA forced Harley to internally vent. It's an old issue that's new again because so many riders don't do their own work anymore.
Best mod I've done to my bike..... And I started learning about it right here. Thanks guys no more blacked out tailpipes, no more trying to get the stuff off the top of the Pistons..... Better performance, but I also noticed extra mpg. It's a half mile a gallon better since the EBS. Have to love a better running bike
Right on! Glad you are getting your ride how you want it.
Thank you for the comment and your business.
👍😎👍
The picture of your Softail catch can is exactly how my system looks on my '04 Fat Boy.
Another shiny piece is all good !
Cool! Glad you're liking it! 👍
Wish I bought mine sooner. Have 14,500 miles on my Street Glide with blow by constantly getting on my engine and bags. When I changed to DKCustom EBS it didn’t fit my current filter system so I bought one of theirs too. Couldn’t be happier. You should’ve seen the oil that drained out of my old filter. Now the bike responds faster, no hesitation and feels like there’s more power.
DKCustom’s customer service is also top notch. I will be a return customer.
Thanks for the good report. We appreciate your business and are happy that you are enjoying your mods. 👍
Hey Natalie, I appreciate your professional and helpful attitude while answering my questions. I appreciate DK Customs for quality products and sharing knowledge through videos
I've passed your comment on to Natalie! Thank you! 👍
Great to hear you are enjoying the parts and are finding the videos useful/interesting.
@@DKCustomProducts 👍🤙✌️
Happy “other”/older catch can customer. But I did have that issue with oil coming out the top. Thanks for the shop towel tip.
I just went with a vented dipstick. Sounds crazy,but I'd swear my bike is happier and performs better than before. Thanks for the video
Vented dipsticks will reduce the amount of hot, oily, oxygen depleted air going into your intake, that is why it performs better.
There is still a disconcerting amount of that crap going into your combustions chambers, so when/if you do an External Breather System it will run even better...last longer too.
@@DKCustomProducts what do you suggest? 2018 ultra
I'm up for trying it
@@tomwhite2368 Which EBS kit is dependent on what air cleaner you are running. We have a chart at the link below, or if you'd rather, you can call or email 662-252-8828 or Support@DKCustomProducts.com and let us know what air cleaner you're running and we can let you know which EBS Kits will work.
www.dkcustomproducts.com/getting-the-right-external-breather-systems-ebs-for-your-bike.htm
@@DKCustomProducts ok thank you
I’m so glad I found you guys before I wasted my money on a stage 1 from someone else! I was going to buy a breather with no EBS, a fancy expensive tuner, and pipes all knowing I wasn’t going to get much if any performance gains! Instead I got the 587 breather, black anodized breather bolts, and the vied setup for the sportster with pipes soon to follow. But so far I’m extremely, EXTREMELY, pleased with the performance gains from just what I’ve installed so far! The breather, the EBS, and the vied, have made a very noticeable difference in the way my little 883 runs and sounds. I actually saved enough money in the difference between the vied and a tuner to pay for pipes! A tuner is $350-$500 the vied $139!!! I honestly don’t know why I haven’t got the pipes yet? I’m just enjoying the bike so much more I haven’t thought too much about it. Thank you DK!!
Man, thank you for the feedback. Good to hear you did not get sucked into the "spend $1000+ and not get much results" trap.
We appreciate your business, and are Glad you are enjoying your ride. 👍
I put on a DK breather and catch can system on my 96" running a torque cam and have had no issues. Prior to adding these I had to leave the oil level down about a half a quart or I got oil out of the air cleaner. Love it. Great product.
Thanks for thumbs up! Glad you're enjoying your Catch-Can EBS.
DKCustomProducts can you add a link to what he is using ? Thank you .....
@@hardtailsuicidaljockey6827 He's using one the the Catch-Can External Breather Systems seen at this link- www.dkcustomproducts.com/hose-catch-can-external-breather-systems-306.htm
So I wanted to coment on my first ride with this breather kit. I was supposed to ride the other day but had battery issues. I have a 17 Slim S and I installed the catch can version of this breather kit. I will leave a review on your site too Kevin. The black can with the black braided hose is very stealthy and just plain sick looking. My S is the black version. So today I got to go for a ride and I know butt dynos are only worth the opinion of the owner of said Butt. Lol ........But........... DAYUM!!!!!! She really pulls much harder and the rpms seem to climb faster too. It's even MORE torqy feeling. Lol Love it. Also I installed just this morning, the coil relocation kit. Install was easy and the directions were great. Pulling the stock coil bracket at the oil tank takes some patience and careful maneuvering but its not hard. Just follow the directions carefully. I am COMPLETELY satisfied with these two mods. The extra cooling to the rear cylinder is nice. Although I cant be sure what my engine temp was before; now its around 220* I believe I had seen 230* on a ride before but can not be sure. I'm going to log it a few rides to get an average. Love the look of seeing the back of the motor. Be mindful of routing the wiring and don't zip tie anything home until you fully check that everything is free from obstruction. I just Love the look of the coils new home. I also did the horn relocation kit too. That was super easy to install. Looks good where its mounted. Thank you DK for 3 awesome products.
Thank you for the great reviews. Really happy to hear you're enjoying. 👍
@@DKCustomProducts 😎👍
Very informative video!! Love it!! Thanks DK Custom Products!! Will be adding a breather to my bike soon!
Glad you enjoyed it. I believe you (& your bike) will enjoy the benefits of an EBS.
Very helpful thank you very much I'm just starting out with Harley's and my sportster is very customized so I have to learn all this quickly lol
Congrats on your first Harley! Sportys Rock! Always feel free to call or email us with any questions...and there is a lot of useful info on our RUclips channel and at this Report link- www.dkcustomproducts.com/reports.htm Support@DKCustomProducts.com 662-252-8828
Excellent service tips keep your videos coming I will be getting the catch can
Thank you for your kind words. Gonna keep doing them as we can. I think you'll like the Catch can.
Installed the basic discrete external breather kit on my 2017 CVO Ultra 114 M8. Easy to fit. Bit expensive for what you are getting but convenient in the package. Makes perfect sense for functionality and performance. The environment can afford it.
Glad you're enjoying. Yeah, we've been running EBS for decades and for years told our Customers to make their own....they asked us to make them into a kit and have them available. It probably is less expensive to get the kit when you factor in the time and gas running around to the different stores and getting the different parts. 👍
O2 it self does not burn but causes other this to burn in this case gasoline . It causes the gas to burn more efficiently and as said performance increases.
Great product !
Good point. Thank you.
I know, that you know, that oxygen itself does not burn, it promotes combustion. But we know what you mean.
PS, I installed the DK catch can system and found that when I wash my bike I need to empty the catch can afterwards. Alot of water gets in through the vents on top.
A small price to pay for a great and beneficial system and the can needs to be emptied regularly anyway.
Yes, very true what you said. Oxygen is not flammable, but it does intensify the combustion process and can cause fire to burn hotter and faster, which makes more power. Thanks!
Trick I use when washing the bike and the catch can is in a place where it catches a lot of water (I do the same thing with my Power Vision mounted on my bars), get a small ziplock bag & a rubber band. Put it over the catch can, closing up the opening on top with a rubber band.
Should i worry about watter getting in the vent holes of the catch can while washing or just sitting out in the rain ,will it fill up and that would make what ya dump out look milky , and give a false reading as to whats aucatly coming out of the breather tubes ? , looks nice though , thanx .
No reason to worry about water getting in the vent holes, it will not harm anything. However, it will take up space in the catch-can, making it so you will want to empty it more often...also, as you mention, it will take away from giving you a clear picture of what is coming out of the engine.
I normally install the catch-can where it is not in direct shot of rain hitting the top of it....like under the air cleaner, under a footboard, behind the cowbell horn, or near the dip stick. Then if I am going to wash the bike, at the same time I put a zip lock bag around my power vision I will also put one around the catch-can (if I have not removed the catch-can bottom to dump it as part of the cleaning process).
No catch cans for me. A little mist on the road won't hurt anything.
Yeah, lots of folks use a filter or just an open hose. Some like to see what is collected. Some spit so much they don't want it going on the road or the bike.
Is there a reason you don't reroute the breather output back to the oil tank?
If you will look at the photo's in the report listed below, or you can see one in the video at the 2:46 minute mark, we do not want that nasty mix contaminating the oil. Beside that primary reason, there is no performance benefit to doing so, and it would cost more. www.dkcustomproducts.com/overview-of-external-breather-systems-ebs.htm
The cooler the air, the more dense it is. Hence, cooler air gives you more of it per intake stroke.
Yep! That reason alone is enough to run an EBS.
So what about the vacuum created by the intake?
Pretty sure that theory of vacuum from the intake, sucking on those little hoses, going thru the heads, up thru the rocker covers, down thru the pushrod tubes and into the crank, is close to non-existent. Lots of folks talking about it...no one has published any data showing that it actually occurs.
Like anything else, suction from the intake will take the path of least resistance, and making it past the umbrella valves in the rocker boxes (which the whole purpose/design is to only allow flow one way....toward the intake and away from the crankcase) is just not going to happen. The path of least resistance will be thru the filter element.
What is shown to be true is that engines run stronger, cleaner, better MPG with External Breather Systems.
Can you show me a picture of the filter,and hoses you used on your tri glide?.
Thanks
😎🇺🇸✌
At the following link you will find what I am running on my 2019 Tri Glide - www.dkcustomproducts.com/premium-discrete-breather-system-twin-cam-touring-softail-dyna-dk-pr-dis-brt-tc.htm
Oxygen does not burn. It supports combustion. Triangle of fire. Fuel oxygen and ignition.
True that! More oxygen, the better the fuel burns, less oxygen worse the fuel burns. Everything else functioning well (fuel & ignition) the more oxygen in the air in the combustion chamber, the more power. 👍
What about smoke coming out of your breather system?
Water vapor or oil vapor coming out of your breather is normal. That is what it is there for. Any other "smoke" coming out is indicative of a problem with the piston rings not sealing well and gasses from the combustion chamber leaking past the rings into the bottom end of the engine (which is where the normal oil mist/vapor comes from).
Have 01 cvo 95 inch did cam tensioner and oil pump upgrade now blows dipstick out when get on it will this help? Have arlen ness air cleaner Have magnetti Marella fuel injection will it need to try to be tuned for this kit?
When adding an EBS you do Not need to retune.
Does the build up already on your valves/pistons tend to burn off over time after you install the ebs?
Yes, most of it will burn off over time, after an EBS is installed.
Can I use an external breathing filter system with the stock air cleaner and not having any tuning done to bike , it’s a stock 2016 rglide special
Yes, and it will run better, because you do not have oily, hot, oxygen depleted air being fed into the intake. NO tune change is needed. That said, with or without and EBS, your Twin Cam will run better with an optimized tune. Reference Report at this LINK- www.dkcustomproducts.com/overview-of-efi-optionsxied-piggy-back-flash-tuners-dyno-ov-efi-opt.htm
Which of your filter systems/breather would you recommend for a 2012 Seventy-Two? If you have just the breather bolts won't that bad oily exhaust just get sucked up by the air cleaner since they are located right next to each other?
I like the Premium Discrete with a filter or with a catch-can. It does get the oxygen depleted and hot air away from the air cleaner. The oil is caught by the filter internal to the breather bolts....and when moving down the road the air pretty much dilutes the hot oxygen depleted air. So they are all the same in how they add power and longevity, it just comes down to a matter of which look you like best. One note, if you have a spitter (a bike that puts out a lot of oil) they can overwhelm the small filters in the breather bolts and end up with some oil on the side of the bike. That won't happed with the hose & filter or hose and catch-can. www.dkcustomproducts.com/breather-systems-c21.htm
Hi DK, i m using xr1200 (2010), what EBS should i use?
Please send and email or text with photo's of your current air cleaner set up and we will let you know which EBS will fit. Support@DKCustomProducts.com or text 662-420-4891
Just for kicks I'm curious to know if would you recommend an ECM remap after installing an external breather on an EFI motor ?
That is completely unnecessary. 👍😎👍
@@DKCustomProducts Thanks man I appreciate that !!
@@mpista7182 you're welcome!
Hey guys ! Question regarding the external breathers. My father in law decided to sell me his Road king with his engine fully upgraded (above a stage IV) at this point. Bike, of course, was finely tuned on a dyno. I want to keep that bike for the longest time possible and wanted to put an external breather kit on it. Can that affect the tune or anything else in a certain manner ? I wouldn’t want to ruin all the money he invested in that bike
Adding an EBS will not hurt the bike, only help it. It does not require a new tune to be safe. Since there will be a higher concentration of oxygen, it might benefit (in terms of getting a little extra power) from tweaking the tune. However, it is likely that it will be imperceptible.
@@DKCustomProducts thank you ! I don’t feel like getting that bike on a dyno again tho. But you’re saying it should be fine either way?
@@NoXQc That is correct. Retuning is absolutely unnecessary when adding an EBS.
I have a stock 14 103 LTD. What are the service intervals on the catch can? Thanks
Every bike is different, even every 14 103 LTD., but generally every oil change is enough, and for many, every other oil change.
Periodic emptying of the Catch-Can is easy. Simply unscrew the can from the lid and dump it.
Cleaning of the foam and separators is not necessary, but easy to do if one wishes.
I have a 95' HD Road King . I have a S&S Super E Carb and S&S Cover Kit . What do u suggest in your breather product ?
Pretty much any of the External Breather Systems at the link below will fit. If it is a spitter, I suggest one of the hose and filter or hose and catch can kits. The breather bolts may be overwhelmed. They all work equally well, so it is just a matter of which look you like best. (you won't need a DIY kit)
www.dkcustomproducts.com/91-up-sportster-big-twin-evo-c75-68.htm
Hello DK. Thank you for this video. I have Slim S with the Screamin Eagle 110 ci. Will the breather bolt set up make a mess, in your opinion? I'm torn between the Bolt system and the black Catch Can optioned out. Thank you
Thanks, glad you enjoyed. There are some TC's that run the breather bolts and make no mess, however, most Twn Cams will spit too much oil for the Breather Bolts to be able to contain it all. No way to know which your's is without trying it. The safer way to go is with a Premium Discrete with the Catch-Can.
@@DKCustomProducts Good morning and thank you SOOOO much for getting back to me. I am on your site now putting together my order. I agree with you that its better do the CC breather set up. Especially as I am toying with doing a 117 kit. Again, thanks so much and God bless you & yours.
😇😎👍
@@manchild111 Thank you! We appreciate your business and believe you will be pleased with that EBS.
@@DKCustomProducts You're quite welcome. I also ordered the coil/horn relocation kit(s). I'm looking forward to installing it all. Thanks again.
Hello DK. I installed my breather kit last week. Here's a little quick story. I recently installed Kuryakyn Velociraptor a/c kit. I cleaned the oil residue out of the TB. I then road MAYBE .... 20 miles. Probably less. Life happens and I haven't rode in a week. In the middle of that, I installed your breather kit. The catch can version. (Directions were great and straight forward. Just take your time when cutting the hose. In my case I used the black braided hose to match my black '17 Slim S.) Remember 20 miles.... The amount of oil residue in my TB with just one ride was just plain disgusting. I did not know the epa made HD route the pcv through the TB.
is this a better way to go over a vented oil dipstick on a 2013 103 twin cam or the results the same for oil blow by into the throttle body and air cleaner?
Yes, it is less expensive and totally prevents any hot, oily, oxygen depleted air from going into the intake. The vented oil dipstick reduces it, but does not totally prevent it.
@@DKCustomProducts Would it be best to run both vented dip stick aswell the catch can? Thanks for all your info great channel!
@@snakeoil2182 The External Breather System vents the crank case pressure AND prevents any hot, oily, oxygen depleted air from going into you combustion chamber. So that is the only thing you should need. However, if you have a sumping issue and do not address it at its' root cause, the vented dipstick can help reduce the chance of sumping. The only other reasons to add a vented dipstick to an EBS are-
1. You have a highly built engine and want to get the absolute most power out of it...theoretically it will allow the crank to spin more freely
2. You have so much oil carryover (blow-by) that having both vents will give you two places for it to escape
Can the hoses be run up and over the valve covers on a twin cam?
Thanks
Yes, many folks route them that way. I have them routed that way on both my Twin Cam and on my M8. www.dkcustomproducts.com/all-twin-cam-engines-c76-191.htm
By installing that dk system hood it void my warranty
If you are talking about a Harley Factory warranty on a 2017 bike or newer, yes, any non Harley/EPA approved changes made to the engine will void powertrain warranty. Pre 2017 it does not. This is a big subject, but in 2017 Harley and the EPA colluded in an illegal agreement that violates the Magnuson Moss Consumer Protection Act. The way around it is to remove the EBS if you ever have to take the bike in for warranty work, or to get a real extended warranty that does not put illegal limitations on your warranty. The company we use for a "Real" warranty can be seen at this link- www.motorcycleagent.com/
Sounds like Harley don’t care about the consumers just the money
@@jameslaperouse3976 They are a publicly held company, and their first loyalty is to their shareholders to make money. With their new CEO that is even more the case...he is all about profitability.
Of course, for a company to be profitable, long term, they need to take care of their Customers.
Unfortunately the stock market does not seem to care about long term...much more short term profits is what they reward the most.
Hopefully HD will find a good middle ground.
Am shocked by the incompetance of most harley owners, the reason more do not have these kits is they are incapable of fitting a DIY kit. HD dealers don't fit them or advise on them, unless you know what your talking about you can't get a bike workshop to fit them either. The UK is mostly clueless except for the Buell ownership community as these products are an essential up grade. People dont know, dont want to know, will not accept that what harley makes is less than perfect.
Yes, the misinformation spread by dealerships is a big part of the new riders not knowing the real deal about their Harley's.
We do have a video that goes thru, step by step on how to install the DIY kits on OEM and other air cleaners...it can be seen at the link below.
ruclips.net/video/uAmPC_kglJk/видео.html
What is the part number for 2020 m8 softail low rider s
Thanks for watching! That system is pretty simple to vent externally assuming you are still running the Air cleaner that came on the bike originally. Either of the EBS found at this link would work for you www.dkcustomproducts.com/catalogsearch/result/?q=tc-brt The install would be very similar to what is explained in this video ruclips.net/video/5tTkzGol2G4/видео.html
My question is Why does Harley continue to build them like this? Why don't they reroute the exhaust themselves instead of making us doing it!
EPA & EU requirements.
Is there Any issues or restrictions to the motor/heads ability to breathe at there best when using one of your single catch cans Tee’d for 2 separate heads? So basically no advantage/disadvantage to having 1 can for both heads vs 2 cans 1 per each head. Hope I’m not complicating this ha. Thanks
There is no restriction in air flow using any of the DK External Breather Systems. The only reasons one would use two catch-cans is for looks or if the bike was a real spitter and one wanted to increase capacity. Here is a fun video demonstrating how much air flows thru the breathers- ruclips.net/video/Kio4DEuOpCU/видео.html
And here is a link to the actual numbers/CFM flowing- www.dkcustomproducts.com/breather-system-flow-testing-results-video.htm
Thanks for quick reply & info. I’ll order me up a catch can for my M8. DKCustomProducts
@@62willy1 Cool, we appreciate your business, and I believe you will be very happy with how well it works.
@@louis_costa That is an urban myth. You can see in the video linked in this response that the breathers work fine at an idle and at lower RPM. Also, if you look at how the breather system is designed, there is no need for any help to equalize the pressure in the crankcase via the breathers with a vacuum. Check out this video for a fun visual- ruclips.net/video/Kio4DEuOpCU/видео.html
DKCustomProducts
Have a S&S stealth system on a twin cam 103. So it looks like I need a DIY. Do I need to use different breather bolts & do I need to block off the existing breather holes in the backing plate ? Thank you
Is the wall moving? Or am I really that High? lol
Might be both! 😀
1st view and comment 👍
She's cute! Single?
Happily married with 4 kids.
@@DKCustomProducts Oh well. Never hurts to ask.
@@scotty2221 True that.
@@DKCustomProducts Just would like a gal that enjoys bikes. Never had any luck yet.... Just bites is all. They are all snowflakes where I live in the Midwest.