Anyone doing the breather bypass on your M8?
#311
01-09-2019, 03:08 PM
Road Captain
#312
01-09-2019, 04:29 PM
Banned
It is mainly water vapor that comes out when the engine is cold. As the engine warms up and cooks off the moisture in the crankcase the resulting vapor is almost nonexistent. When the engine sits overnight there are seldom any droplets that hit the floor and if there is it is water which evaporates. Seldom do I find a droplet of oil on the floor. In other words people think it is more of a problem that it turns out to be. One thing that probably helps in my situation is that I intentionally routed the hose that carries the vapor as close to the engine block as I could. My thinking was if the hose is very warm it is going to encourage a free flow all the way to the exit. I believe that has proven to be true and no the engine block does not get so hot as to even come close to melting the hose. The rear exhaust comes about 2" from the hose and there are no ill effects from its close proximity.
Last edited by Long time rider; 01-09-2019 at 04:35 PM.
#313
01-09-2019, 04:46 PM
Pressure pushing matter out of the crank case is minimal. It isn’t shooting it. Think stove top espresso pot.
I f pressure was intense, we be adding lube every ten miles.
But again. Oil for the most
part is denser than water and so it sits in the hose in a suspended state till the engine is turned off. Most of it will drain back or sit there holding a level. Not coming out of the filter. Try it (;
#314
01-09-2019, 04:52 PM
Seasoned HDF Member
we’re talking about liquid, right? If it found a way out. It will find a way back in.
Pressure pushing matter out of the crank case is minimal. It isn’t shooting it. Think stove top espresso pot.
I f pressure was intense, we be adding lube every ten miles.
But again. Oil for the most
part is denser than water and so it sits in the hose in a suspended state till the engine is turned off. Most of it will drain back or sit there holding a level. Not coming out of the filter. Try it (;
Maybe others will have better luck.
Last edited by lp; 01-09-2019 at 05:00 PM.
#315
01-09-2019, 05:21 PM
This is an alternative for not running it downward.
I once used a home made bypass that sat level with the intake and despite of my agressive throttleling, I would only notice a few drops during each ride. No puddles as some might think.
Elevating it will only result in even less. Add a long enough hose and I highly doubt any would come out. And, there is a filter at the end too.
I once used a home made bypass that sat level with the intake and despite of my agressive throttleling, I would only notice a few drops during each ride. No puddles as some might think.
Elevating it will only result in even less. Add a long enough hose and I highly doubt any would come out. And, there is a filter at the end too.
#316
01-10-2019, 12:41 PM
You are correct, you won't see it unless you scope it or pull the heads, believe me I know from experience on my last 103 build that the **** that comes through the breather hoses and into the intake can and will cause build up to the point of causing pinging. Some engines are worse than others, but they all suck that stuff back into the intake and burn on to the top of HOT pistons and cause carbon build-up unless you re route it !!
#318
01-11-2019, 09:12 AM
Road Captain
You are correct, you won't see it unless you scope it or pull the heads, believe me I know from experience on my last 103 build that the **** that comes through the breather hoses and into the intake can and will cause build up to the point of causing pinging. Some engines are worse than others, but they all suck that stuff back into the intake and burn on to the top of HOT pistons and cause carbon build-up unless you re route it !!
Also dont ever buy a Two Stroke
#319
01-11-2019, 09:20 AM
Seasoned HDF Member
Could never happen!The carbon from the minescule amount of vapor and oil produced by the breather is irrelevant in the combustion cycle.Almost all of the carbon you see comes from the high volume fuel and cylinder oil burn.It amazes me that some people on these forums always know far better than the experts who build the bikes for 115 years! .... Just get the OEM extended breather pipe upgrade,plug them in and forget about fiddling with something that aint broke!
Also dont ever buy a Two Stroke
Also dont ever buy a Two Stroke
#320
01-11-2019, 09:39 AM
Could never happen!The carbon from the minescule amount of vapor and oil produced by the breather is irrelevant in the combustion cycle.Almost all of the carbon you see comes from the high volume fuel and cylinder oil burn.It amazes me that some people on these forums always know far better than the experts who build the bikes for 115 years! .... Just get the OEM extended breather pipe upgrade,plug them in and forget about fiddling with something that aint broke!
Also dont ever buy a Two Stroke
Also dont ever buy a Two Stroke
The following 2 users liked this post by Softy 103:
Sam D. (01-12-2019),
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