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| Posted: 26 Dec 2007 16:13 | [?] |
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Registered User Currently Offline Join Date: Feb 2007 |
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| Exactly, some people have a catch can installed to collect the oil.....I didnt use one because the oil drip is very minimal almost non-existent. The filter is because when the bike spits the oil it also sucks air back in....the filter insures that no debris from the outside air is being pulled back into the motor. | |
| Posted: 14 Mar 2008 06:21 | [?] |
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Registered User Currently Offline Join Date: Mar 2008 |
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| Stylie, if you're worried about your a/f ratio being affected, don't be. Everytime you ride your bike for a few minutes at easy load (flat ground, 2000-4000rpm steady) the ECU is in its closed-loop mode and reevaluates the mixture. Any changes in atmospheric temperature/pressure, or something like the lack of CO2 from a crank case breather is accounted for by an adjustable 'multiplier' called the AFV - adaptive fuel value, which will try to return the mixure to stoichiometric (chemically balanced). | |
| Posted: 20 Mar 2008 00:43 Last Edited By: LeFox | [?] |
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Registered User Currently Offline Join Date: Oct 2007 |
Posts: 15 Reputation: Unranked [?] User Rank: Second Lieutenant
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Thanks to all for the great ideas for the mod, If nothing else I will enjoy not wiping the oil out of the airbox. Here is what I used. Air breather from Drag Specialties, 2 rubber stoppers inserted from the underside to plug the holes, fuel hose 5/8" O.D. 3/8" I.D., 2 T's, schraeder valve, and zip ties at the connections. I chose to route to the back although I liked the mounting by the oil cooler. To start I removed the hose from the rear cylinder and saved it for the end with the valve due to the nice curve it already had. Then I cut about 4" off the front cyl hose and recycled that for the rear cylinder. Then new hose to just behind the rear sub-frame to hide the filter. Left about 2" hose at the end for oil collection.
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| Posted: 26 Apr 2008 05:43 | [?] |
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Registered User Join Date: Sep 2007 |
Posts: 58 Reputation: 2 [?] User Rank: First Lieutenant 
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| That's pretty much what I did, and I didn't do the overflow can either. I figure if it collects enough oil to require it, I'll just go get a new filter - they're only about $5.00 or so from Autozone. | |
| Posted: 26 May 2008 03:14 | [?] |
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Registered User Currently Offline Join Date: May 2008 |
Posts: 45 Reputation: Unranked [?] User Rank: Second Lieutenant
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LOVE THE MOD JUST DID IT TODAY ON MY NEW ULY. BUT I DO AGREE WITH ZOMBIEBUELER. I RAN MINE PRETTY MUCH JUST LIKE HE DID BUT I RAN LINE OFF T DOWN BY THE AIR CHIN DRILLED SMALL HOLE IN IT ZIPP TIED IT AND INSTALLED SM. BRASS FITTING WITH A CAP. THAT WAY I CAN DRAIN IT EVERY GREAT ONCE AND A WHILE.  HAVE PICS BUT TO LG. TO POST WORKING ON SIZE
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| Posted: 26 May 2008 03:42 Last Edited By: LeFox | [?] |
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Registered User Currently Offline Join Date: May 2008 |
Posts: 45 Reputation: Unranked [?] User Rank: Second Lieutenant
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HERE ARE SOME PICS. SINCE PHOTOS I HAVE SHORTENED DRIP LINE SO IT IS NOT NEARLY AS NOTICEABLE. IF U RUN LINE LIKE THIS TAKE LINE OFF FRONT CYL. AND MOVE TO BACK AND CUT ABOUT 3.5" PCE. FOR FRONT CYL. AND IT WILL LINE UP T ALMOST PERFECTLY
edit: picture layout |
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| Posted: 04 Jun 2008 04:16 | [?] |
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Registered User Join Date: May 2008 |
Posts: 350 Reputation: 7 [?] User Rank: Lieutenant Colonel 
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| I just did this mod and it made a big difference! Everyone should do this. Its cheap, easy, and makes the bike run sooo much better! | |
| Posted: 05 Jun 2008 04:34 | [?] |
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Registered User Currently Offline Join Date: May 2008 |
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| I agree. It makes a big difference and really smooths out the idle-3k range. | |
| Posted: 06 Jun 2008 04:22 | [?] |
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Registered User Currently Offline Join Date: May 2008 |
Posts: 137 Reputation: 5 [?] User Rank: Captain 
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| The filter is to let air in as oil drains and sits on the second T above the drain/catch hose. I just did this today and I love how my bike feels at low RPM's. | |
| Posted: 06 Jun 2008 04:26 | [?] |
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Registered User Currently Offline Join Date: May 2008 |
Posts: 137 Reputation: 5 [?] User Rank: Captain
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| I just answer a question of the last page like a dummy, sorry. But I am very happy with the mod. | |
| Posted: 10 Jun 2008 21:14 | [?] |
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Registered User Currently Offline Join Date: Jun 2008 |
Posts: 204 Reputation: 3 [?] User Rank: Major 
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i might try this, but im not a very good do it yourselfer... so im scared
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| Posted: 10 Jun 2008 22:17 | [?] |
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Registered User Currently Offline Join Date: Feb 2007 |
Posts: 990 Reputation: 8 [?] User Rank: Lieutenant General
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Quote:
might try this, but im not a very good do it yourselfer... so im scared Once you remove the airbox cover so you can see the airfilter, you'll see how easy it really is. It just sounds tougher when its all written down. ** BTW there were 4 pages of installation directions that came with my exhaust. I read it and said Holy Sh**. Then I grabbed my tools, a beer, and tossed the instructions in the garbage. No Problems
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| Posted: 14 Jun 2008 22:45 | [?] |
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Registered User Currently Offline Join Date: Aug 2007 |
Posts: 170 Reputation: 2 [?] User Rank: Captain
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just got done doing the mod and it freaking starts HAILING OUTSIDE!!!!
So I will take it out for a spin once its done and report back if it help with the backfire/popping sound. |
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| Posted: 15 Jun 2008 04:34 Last Edited By: Phrogg | [?] |
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Registered User Currently Offline Join Date: Aug 2007 |
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Just wondering is this going to hurt the gas mileage at all? I know when it when to be recycled, it might have had some unburnt fuel. So I was just wondering if it was going to hurt it at all.
PS: it is a whole lot smoother....nice! |
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| Posted: 15 Jun 2008 10:32 | [?] |
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Moderator Currently Offline Join Date: Jun 2007 |
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any change is gas mileage should be minor...but power does have its price 
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| Posted: 15 Jun 2008 21:13 | [?] |
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Registered User Currently Offline Join Date: Apr 2008 |
Posts: 36 Reputation: 2 [?] User Rank: Second Lieutenant
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Ditto on the hose mod. Noticed a slight improvement at 1st gear parking lot speeds. Now I will be machining a catch can and powder coating it graphite to match the frame. Here is a quick sketch.
The vent will be at a 22.5 degree angle to allow the oil to flow down into the can. |
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| Posted: 17 Jun 2008 20:36 Last Edited By: zoedogg1 | [?] |
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Registered User Currently Offline Join Date: Mar 2008 |
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Im kinda thinking that eventually crap will drip from that filter. I have a catch can that the goop goes into and at the top af the catch can off to the side is the breather. It is just spliced into two directions this way (top photos) and both work as a drain. That defeats the purpose of the filter as a breather. Also, the drainage may become a small problem since gas, water and sluggy oil come out and onto your bike and rear wheel as you ride.
With a catch can you basically save it, and drain it every few tanks or so. No mess this way. There is a decent amount also that is caught at times..but it does differ. |
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| Posted: 17 Jun 2008 20:47 | [?] |
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Registered User Currently Offline Join Date: Mar 2008 |
Posts: 180 Reputation: 13 [?] User Rank: Captain
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| Oh! Before I forget, the plugs up top in the bottom of the air box. If they arent gluded in real good you may want to switch and install them from the bottom. If one rattles loose or something and somehow ends up in the Stack, your gonna be REAL unhappy. It draws air pretty hard and could suck one out. I've seen this happen to 3 different guys. | |
| Posted: 11 Jul 2008 22:17 | [?] |
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Registered User Currently Offline Join Date: Apr 2008 |
Posts: 707 Reputation: 32 [?] User Rank: Major General 
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| hey if worried about oil buildup, just purchase an in-line filter, then when it pull air back in to hose it will be filtered, and when it doesn't the oil can drain out because it is a two way filter... | |
| Posted: 13 Jul 2008 22:20 | [?] |
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Registered User Currently Offline Join Date: Apr 2008 |
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Just finished mine Very easy to do. I used a 3/8 barb to 1/2 threaded end and capped it with a 1/2 threaded PVC end cap for a small reservoir and ran it under the seat.
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| Posted: 14 Jul 2008 00:51 | [?] |
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Registered User Currently Offline Join Date: Oct 2007 |
Posts: 75 Reputation: 2 [?] User Rank: First Lieutenant
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just did the mod......WOW, cleaned up my stumble. except i only used one tee and ran the hose back to and followed the line running to the rear master cylinder behind the right footpeg. very happy!
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| Posted: 14 Jul 2008 03:58 | [?] |
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Registered User Currently Offline Join Date: Jul 2008 |
Posts: 143 Reputation: 5 [?] User Rank: Captain
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If your engine is running right you won't get any noticable change in AF mixture. The hoses your guys are rerouting have a suck and blow not just blow. The reason the oil moves out is because of the viscocity. Oil has surface tension, thats why you can't wipe it off. So what happens is it works its way out the tubes but not back in as much so it starts to get that film and then drips. As your engine starts to wear and you start getting blowby on your piston rings you will get an overpressure in your crankcase and it will start to just blow. When you start to get to much blow thats when it's time to re-ring your pistons. I have the same mod on my sportster. I eventually had oil EVERYWHERE. So I just tore it apart and bored out my cycliner and put in new pistons and rings.
As for the filter, if you have a catch-can then you need the filter or it will just spit oil out. If you don't have the catch-can then it will just drip down and onto the ground. If you want a technical name you can call it "vent to atmosphere" It sounds pretty good that way. |
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| Posted: 14 Jul 2008 04:01 | [?] |
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Registered User Currently Offline Join Date: Jul 2008 |
Posts: 143 Reputation: 5 [?] User Rank: Captain
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| So after typing out this great explanation, I realized this was all covered, I would have known that if I knew there was a second page. Haha oops. | |
| Posted: 14 Jul 2008 20:22 | [?] |
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Registered User Currently Offline Join Date: Apr 2008 |
Posts: 707 Reputation: 32 [?] User Rank: Major General
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I did this over my lunch break and I've only put like 20-30 miles on it since, but I must say ME LIKEY! Runs soooo much smoother from idle to 2500rpm, really makes going through the gate (speed limit 15 with like a million speed bumps) a lot easier. It used to be murder, the worst part of my ride to work, now it's gravy.
Oh and for all of those that were wondering, in theory your motorcycle mpg shouldn't be effected adversely because you are not stuffing more fuel in there now than you were before, if anything you will be getting more Oxygen in with your fuel so that it should burn better. Hence, maybe mpg's go up? Maybe someone could do a before and after study and post it on here for us? |
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| Posted: 14 Jul 2008 22:36 | [?] |
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Registered User Currently Offline Join Date: Apr 2008 |
Posts: 707 Reputation: 32 [?] User Rank: Major General
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This is where I put my filter...
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| Posted: 15 Jul 2008 15:04 | [?] |
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Registered User Currently Offline Join Date: Feb 2007 |
Posts: 990 Reputation: 8 [?] User Rank: Lieutenant General
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Quote:
if anything you will be getting more Oxygen in with your fuel so that it should burn better. Thats the idea behind it But...because you arent re-burning/recycling the gasses it's being wasted and dumped out of the bike, so that could mean worse gas mileage. Then again, I bought my bike for fun, I could care less about mileage.
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| Posted: 15 Jul 2008 15:58 Last Edited By: LeFox | [?] |
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Moderator Currently Offline Join Date: Jun 2007 |
Posts: 2500 Reputation: 18 [?] User Rank: Five-Star General
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Quoting FIDOSOL
Oh and for all of those that were wondering, in theory your motorcycle mpg shouldn't be effected adversely because you are not stuffing more fuel in there now than you were before, if anything you will be getting more Oxygen in with your fuel so that it should burn better. Hence, maybe mpg's go up? Maybe someone could do a before and after study and post it on here for us? actually... 
to explain the concept. original routing re-uses already burned gasses, which still have some unburned particles into the mixture and route them back to the inlet to burn again, thus actually burning the mixture twice. this causes less unburned particles to be released into the air, which is better for the environment. in this mixture, there are of course also exhaust fumes which don't burn that good and which prevents your engine from running optimal, especially at low rpm when there's not enough fresh air getting mixed with the already burnt mixture. so, by re-routing this, you are no longer pushing fumes back into the engine, but filling it with a fresh air/fuel mixture, making your engine run smoother and healthier. but, although minimal, this does affect the environment. and, since you are no longer re-burning that air/fume/unburned particle mixture, you will be adding more fresh air/fuel mixture. Which will give you some minor changes in your gas/mileage. 
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| Posted: 15 Jul 2008 22:23 | [?] |
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Registered User Currently Offline Join Date: Apr 2008 |
Posts: 707 Reputation: 32 [?] User Rank: Major General
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| Hey, one point nobody can argue, I now have a wicked neat looking filter on my bike! | |
| Posted: 15 Jul 2008 22:58 | [?] |
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Moderator Currently Offline Join Date: Jun 2007 |
Posts: 2500 Reputation: 18 [?] User Rank: Five-Star General
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Quoting FIDOSOL
Hey, one point nobody can argue, I now have a wicked neat looking filter on my bike!
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| Posted: 24 Jul 2008 16:57 Last Edited By: Roccodart440 | [?] |
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Registered User Currently Offline Join Date: Jun 2008 |
Posts: 44 Reputation: Unranked [?] User Rank: Second Lieutenant
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Is there any issue now that there is nothing pulling positive crankcase pressure?
A PCV valve on a car for instance is very detrimental to remove. In race application we run vacume pumps off the motor and run to a canister to get even more vacum on the crankcase, albeit we don't recycle those gases in that application but we do it because a vacum pump makes more HP and also replaces the funtion of the PCV valve. |
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