| Author | Message | ||
     Chris_mackay |
Here's my solution to high cost catch cans. They're available at WalMart and probably any other type of store that sells tanning supplies.   Just follow the instructions on the can and when it's empty, drill a 7/16 hole in the top, tap it with a 1/4" pipe tap and screw in a fitting. I drilled a few 1/16" holes around the top to vent it also. It's a pretty sturdy aluminum can! Total cost of the can and fitting was under $15.00. | ||
| Newfie_buell |
Guess what my project for today is???? I have to go to the Evil Empire (Walmart) later today for a filter and oil so I may just pick up one of those. | ||
| Sandblast |
That looks pretty cool. But I have been told that you never, once the spooge/oil leaves the heads, want it to go up-hill. It will create pools in your routing which can restrict flow which is very bad. You might want to reconsider the way you routed your hoses. | ||
| Aaomy |
chris,, arnt you a machinist, havent i noticed some of your work,, hear is a teaser of the one i made last night ,, crack one of these babies out, besides you could probably make it a lot nicer,, i dont even have cnc or nice programs to do your cool 3d previews in..   | ||
| Aaomy |
ps,, those al cans,, if you want to take the time, sand them down and polish them, they will shine up just like a mirror, | ||
| Chris_mackay |
If that were a street bike and I was going to put a lot of miles on it I guess I'd look for a better route. But where it is fit under the tail section just right and didn't interfere with anything. And if you envision the bike in a corner it's not very far uphill. Yeah, I know I could spend a bunch of time and come up with a really cool one. But I'd rather spend the time on parts that make it go. | ||
| Paint_shaker |
And I thought a small gatorade bottle tucked in the frame and held in place by the vent hose was budget....  | ||
| Cataract2 |
So, what's the purpose of those cans? | ||
| Newfie_buell |
To catch the crap and spooge that is normally vented back through the carb and air box. | ||
| Rek |
I've been rooting around in the KV looking for catch-can set-ups for my S3. There are a few interesting ideas, unfortunatley everyones seems to assume that we all know where the splooge originates and only show their final can mounting positions and hose routing. For us left-brain folks who need pictures to learn, where does the gunk come from? Rob | ||
| Sandblast |
It comes from the two holes in the very top of your motor, located on each side of your carb (or throttle body). I'll go find a picture. | ||
| Sandblast |
 Ok, see the mount that holds the Carb? The two big bolts holding that SHOULD be hollow banjo bolts, with hoses coming from them, routed downhill, into a catch can or a breather filter if you dont mind a mess. | ||
| Rek |
A-ha, So where does your splooge go? (if this pic is your bike) And how does it coat the inside of my breadbox if there are bolts in the holes? Guess I should get off my fat azz and go outside and look? (edit) nevermind the breadbox question, since I've re-read the above post I now follow. Rob (Message edited by rek on May 01, 2005) | ||
| Bluzm2 |
Rek, The above bike has the XB rocker covers in place. The crankcase now vents thru the top of the covers. The stock breather bolts can now be blocked off with solid bolts. | ||
| Djkaplan |
My $5 catch can. I hollowed out a huge fuel filter and drilled a hole in the top and bottom for a small K&N filter and a drain. The yellow thingie is a plastic pot scrubber I used as a filter media for the spooge. The drain is a vacuum fitting I glued on.  Here it is intstalled on the left side of my 2k M2. I used lots of zip ties so it looks factory(!).  It fits really good with the sidecover on.  Here's how I routed the breather lines coming out of the heads. They merge and run down all the way to the catch can.  The whole set-up works well enough. I spent more on beer than I did on parts. I plan on installing pcv valves in the rocker covers to clean up the routing and eliminate the part where the hoses merge. (Message edited by djkaplan on May 02, 2005) | ||
| Chris_mackay |
Nice job getting it out of the way! | ||
| Taxman |
is this needed on the XB's with the fuel injection? or just on carb bikes? why wasn't this included in factory setup? | ||
| Wyckedflesh |
The factory setup has the tubes routed into the air cleaner system. With the aftermarket aircleaner systems the routings are up to the owner. With the poor position of the tuber style breathers a catchcan is a good idea, the XB's have a higher mounting of the breather that keeps their exposure to oil down to a minimum so it comes down to more of a preference issue on whether you feel you need a catch can or not. Some have found evidence of oil in the airbox once past break in and others like myself haven't. Once I was past break in, I haven't seen a drop in the airbox. Note that I also don't use a K&N or other oil type air filter which can spread a coating of oil by nature around the airbox. | ||
| M1combat |
The factory setup is EPA compliant. The EPA prefers that you route the oil and blow by back through the engine to burn just a tad bit more of it before it comes out the exhaust. This will gunk up you throttle body, intake manifold and the intake ports... It also robs power. | ||
| Djkaplan |
On XB's (as on tubers with carbs and injection), the engine's crankcase vapors are vented back into the intake stream, so yes, you could do this to an XB. The crankcase vapors (consisting of blow-by and water/oil mist) are kept in a closed loop purely for EPA emission considerations. | ||
| Mikej |
"The factory setup is EPA compliant." The factory setup also drips oil out of the airbox or air filter assembly on those high-flow days. And I hardly think the EPA would prefer dripping oil in a stock setup versus non-dripping oil in a non-stock setup. But then they are an arm of the government. I'll eventually be going to an XB rocker cover setup and then vent into a catch can. | ||
| Outrider |
"The factory setup is EPA compliant." True...but only because it recycles the byproducts back into the engine and out the exhaust were it doesn't have the effect on the atmosphere that a vented catch can does. Figure out how to do a closed loop catch can, sans vent, and you should be EPA compliant as well. Ahhh...That is as long as the manufacturer has it tested and listed as an OEM component. In thinking that through, routing the spent air back into the intake shouldn't be as detrimental as the spooge in the catch can. However, venting the catch can into the exhaust header between the O2 sensor and the muffler might just do the trick via incineration. Hey, I am just a dreamer, not an engineer. Does anyone think this could work? | ||
| Djkaplan |
Routing the crankcase gas to the exhaust is feasible, but you'd have to vent it to a low pressure area in the system (not in the primary) and install a one way valve to make sure it didn't push spent gas back into the engine. Old drag cars use to do this trick by locating the one way valve past the header collectors where exhaust gas would speed up. At full throttle, a slight vacuum is created, enough to vent the engine. At anything less than full throttle, no vacuum is created, though, hence the one way valve. Now days, most drag race tuners hook up a small, engine driven air-pump to suck crankcase gas out. | ||
| Djkaplan |
I love seeing the creativity everyone uses for solving the catch can deal. Kudos to everyone who made their own! | ||
| Mr_grumpy |
Jam Pot Spoogerator. I ran the pipes into a Y piece between the heads then into one of those individual sized jam pots then back out of the jam pot thru an in-line fuel filter back to the air cleaner. seems to be working so far, will post a pic when poss. | ||
| M1combat |
You're trying to keep the burnt air from re-entering the system as well. This is where you lose power. Burnt air won't burn again... | ||
| Wyckedflesh |
You're trying to keep the burnt air from re-entering the system as well. This is where you lose power. Burnt air won't burn again... It is routed not for the "burnt" fumes, but for any unburnt that may have gone past the rings. A properly running engine should have so little of either as to not make any kind of difference, let alone any kind of noticeable difference. If your running an XB and have a regular problem with noticeable oil in the airbox, you might just want to do a leakdown test. | ||
| Chris_mackay |
Hey! Scroll to the top of this thread! No engineering! It catches oil that the motor doesn't want and I empty it when it's full. No degree necessary! No engineering skills! Just born from plain old necessity! Or maybe it should have a water jacket to make it go faster? | ||
| Aaomy |
djkaplan, cool,, like the yellow filter media,, scary how minds work,, mine has tubes that vent the air in the bottom and make it travel up threw, "chrome boy", stainless steel pan scrubbers,, was going to use 0000 steel wool but didnt want the condensation from the motor to make it rust,, gotta love kitchen utensils in the the bike!! | ||
| Kelly |
I made my catch can out of PVC,brass fittings, a breather filter and JB weld. It was cheap. I painted it black and I typically have to empty it once or twice a year. I dont understand why you'd pay out the ••• for a Jaz catch can when you can make one for $10. | ||
| Koz5150 |
My Jaz can was only $30 something. It mounts up great under the tail section of my M2. I am very happy with it. |
