crankcase ventilation
Road Master
Joined: Aug 2013
Posts: 837
Likes: 8
From: Wyoming
Over time, with the crankcase venting into the air cleaner and throttle body, you have sticky build up which reduces air flow. No, I have not measured the difference between a clean a/c and tb versus ones that are fouled up, but I've seen some pretty gunked up (that's a technical term) a/c and tbs.
Grand HDF Member
Joined: Oct 2012
Posts: 3,757
Likes: 195
From: Boise, ID
I would think you would get better performance, if nothing else like was mentioned earlier, just clean. Did I miss you posting what you did with your horn? Tossed it in the parts bin?
I have the DK set up (love it by the way) and have noticed a little blow by on my bike. Usually right after getting the bike serviced. I noticed once the oil level gets a little lower that stops. You might play with your oil level a bit and see if that helps. Maybe put some sort of filter in there to stop smelling oil? Maybe a piece of washable filter media?
I have the DK set up (love it by the way) and have noticed a little blow by on my bike. Usually right after getting the bike serviced. I noticed once the oil level gets a little lower that stops. You might play with your oil level a bit and see if that helps. Maybe put some sort of filter in there to stop smelling oil? Maybe a piece of washable filter media?
Last edited by BigDogIdaho; Dec 8, 2014 at 08:53 AM.
Thread Starter
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Advanced
Joined: Oct 2014
Posts: 85
Likes: 0
From: Oceanside, CA
parts:
- Catch can from Amazon, by HDM performance (or something like that, its a go-kart company) about 20$
- Rubber plumbing seal, comes in a square from Lowes
- Electrical conduit hangar, i think 1.5 inch also from Lowes
- 1/4" fuel line from auto parts store
- two 1/4" brass barbed fuel line connectors, basically just a straight fitting to connect two hoses
- 1/4" brass barbed t-fitting
- a drill to drill the stock air cleaner backplate
where's the horn mounted now?. excellent engineering!, ill admit that it will eliminate the oil being routed through the combustion chamber to be burned off. your piston tops will probably be cleaner as will the throttle body. but there will be "0" horsepower/throttle response increases/changes from this mod. im not raining on what you did, it is great work at concealing the can, equal to a factory component!.
I would think you would get better performance, if nothing else like was mentioned earlier, just clean. Did I miss you posting what you did with your horn? Tossed it in the parts bin?
I have the DK set up (love it by the way) and have noticed a little blow by on my bike. Usually right after getting the bike serviced. I noticed once the oil level gets a little lower that stops. You might play with your oil level a bit and see if that helps. Maybe put some sort of filter in there to stop smelling oil? Maybe a piece of washable filter media?
I have the DK set up (love it by the way) and have noticed a little blow by on my bike. Usually right after getting the bike serviced. I noticed once the oil level gets a little lower that stops. You might play with your oil level a bit and see if that helps. Maybe put some sort of filter in there to stop smelling oil? Maybe a piece of washable filter media?
Grand HDF Member
Joined: Oct 2012
Posts: 3,757
Likes: 195
From: Boise, ID
I just got rid of the horn, never used it. The only downfall is that there is very little room to play with. I don't want to move the can down too much more because than it will show outside of the cow bell. I'll look around, maybe a sponge-like filter element might work.
That's what I was thinking of. Something like a small sponge. If you can pull it out and clean it, should be good.
Wonder if you can make a catch can....looks like it might be doable with some PVC pipe and a fitting or 2.
Road Master
Joined: Aug 2013
Posts: 837
Likes: 8
From: Wyoming
Did you read the thread? A catch can is exactly what this thread is about. fxdc_9613 fashioned an external breather system that empties into a catch can!!!
Grand HDF Member
Joined: Oct 2012
Posts: 3,757
Likes: 195
From: Boise, ID
parts:
- Catch can from Amazon, by HDM performance (or something like that, its a go-kart company) about 20$
Oh you are right....he MADE a catch can that he purchased from Amazon ???
Road Master
Joined: Jul 2013
Posts: 946
Likes: 29
From: my house
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