Vented Dipstick
Thread Starter
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Stellar HDF Member
Joined: Aug 2011
Posts: 2,765
Likes: 1,802
From: Newnan, GA
Vented Dipstick
Hey Ya'll.
I was thinking of installing a breather by drilling a couple of hole into my air in take and attach a breather filter that would hang under the air filter.
I found a You tube video by one of our members here where he modified his M8 dipstick. I thought that was a good Idea and looked around the net a bit more and I found this Vented dipstick on Fuel Moto.
It is a bit expensive but it looks good and is seems well built.
I was thinking of installing a breather by drilling a couple of hole into my air in take and attach a breather filter that would hang under the air filter.
I found a You tube video by one of our members here where he modified his M8 dipstick. I thought that was a good Idea and looked around the net a bit more and I found this Vented dipstick on Fuel Moto.
It is a bit expensive but it looks good and is seems well built.
Popular Reply
Jan 29, 2022, 09:46 PM
Tourer
Joined: Jun 2021
Posts: 307
Likes: 506
From: Saskatchewan Canada
I'm an old mechanic. You can take or leave what I say. If you don't agree, I won't be offended.
Vehicles have been venting the crankcase into the intake for decades. Todays highest performance street legal cars do it. When you actually look at how much oil and crankcase gasses enter your combustion chamber on each intake stroke, it is an incredibly tiny amount. Cruising at 3500 RPM you have 1750 intake cycles per minute, per cylinder. Go on a two hour highway ride, that's 210,000 intake cycles per cylinder. 420,000 for a v-twin engine. How much oil and crankcase gasses entered the intake on that ride? The amount is so incredibly small it is unmeasurable without some pretty high tech equipment. This tiny amount of oil is completely combusted with no ill effect on your engine or your performance. The amount of crankcase gasses is the same. It's not enough to affect engine performance. The people who tell you that it is a problem are usually trying to sell you something. And those videos of a piston that has a lot of carbon in the top and tell you that it is from this tiny amount of oil entering your combustion chamber, are flat out lying to you. If you have enough oil entering your combustion chamber to cause a build up like that you have a bigger problem then an external vent is going to fix. If this truly were an issue vehicle manufacturers, especially manufacturers of high performance cars, would pulling their hair out finding an alternative.
Don't get me wrong, it's not going to hurt anything to vent your crankcase elsewhere, but it's not going to help anything either.
Vehicles have been venting the crankcase into the intake for decades. Todays highest performance street legal cars do it. When you actually look at how much oil and crankcase gasses enter your combustion chamber on each intake stroke, it is an incredibly tiny amount. Cruising at 3500 RPM you have 1750 intake cycles per minute, per cylinder. Go on a two hour highway ride, that's 210,000 intake cycles per cylinder. 420,000 for a v-twin engine. How much oil and crankcase gasses entered the intake on that ride? The amount is so incredibly small it is unmeasurable without some pretty high tech equipment. This tiny amount of oil is completely combusted with no ill effect on your engine or your performance. The amount of crankcase gasses is the same. It's not enough to affect engine performance. The people who tell you that it is a problem are usually trying to sell you something. And those videos of a piston that has a lot of carbon in the top and tell you that it is from this tiny amount of oil entering your combustion chamber, are flat out lying to you. If you have enough oil entering your combustion chamber to cause a build up like that you have a bigger problem then an external vent is going to fix. If this truly were an issue vehicle manufacturers, especially manufacturers of high performance cars, would pulling their hair out finding an alternative.
Don't get me wrong, it's not going to hurt anything to vent your crankcase elsewhere, but it's not going to help anything either.
Road Captain
Joined: Sep 2014
Posts: 718
Likes: 210
From: IL
A1 has a cheaper version of the vented dipstick.
DK customs have lots of vids on the benefits of having your breathers not go back into the intake. Watch the vids & decide for yourself I’d say.
Blockhead just released a vid about externally venting also.
DK customs have lots of vids on the benefits of having your breathers not go back into the intake. Watch the vids & decide for yourself I’d say.
Blockhead just released a vid about externally venting also.
Tourer
Joined: Jun 2021
Posts: 307
Likes: 506
From: Saskatchewan Canada
I'm an old mechanic. You can take or leave what I say. If you don't agree, I won't be offended.
Vehicles have been venting the crankcase into the intake for decades. Todays highest performance street legal cars do it. When you actually look at how much oil and crankcase gasses enter your combustion chamber on each intake stroke, it is an incredibly tiny amount. Cruising at 3500 RPM you have 1750 intake cycles per minute, per cylinder. Go on a two hour highway ride, that's 210,000 intake cycles per cylinder. 420,000 for a v-twin engine. How much oil and crankcase gasses entered the intake on that ride? The amount is so incredibly small it is unmeasurable without some pretty high tech equipment. This tiny amount of oil is completely combusted with no ill effect on your engine or your performance. The amount of crankcase gasses is the same. It's not enough to affect engine performance. The people who tell you that it is a problem are usually trying to sell you something. And those videos of a piston that has a lot of carbon in the top and tell you that it is from this tiny amount of oil entering your combustion chamber, are flat out lying to you. If you have enough oil entering your combustion chamber to cause a build up like that you have a bigger problem then an external vent is going to fix. If this truly were an issue vehicle manufacturers, especially manufacturers of high performance cars, would pulling their hair out finding an alternative.
Don't get me wrong, it's not going to hurt anything to vent your crankcase elsewhere, but it's not going to help anything either.
Vehicles have been venting the crankcase into the intake for decades. Todays highest performance street legal cars do it. When you actually look at how much oil and crankcase gasses enter your combustion chamber on each intake stroke, it is an incredibly tiny amount. Cruising at 3500 RPM you have 1750 intake cycles per minute, per cylinder. Go on a two hour highway ride, that's 210,000 intake cycles per cylinder. 420,000 for a v-twin engine. How much oil and crankcase gasses entered the intake on that ride? The amount is so incredibly small it is unmeasurable without some pretty high tech equipment. This tiny amount of oil is completely combusted with no ill effect on your engine or your performance. The amount of crankcase gasses is the same. It's not enough to affect engine performance. The people who tell you that it is a problem are usually trying to sell you something. And those videos of a piston that has a lot of carbon in the top and tell you that it is from this tiny amount of oil entering your combustion chamber, are flat out lying to you. If you have enough oil entering your combustion chamber to cause a build up like that you have a bigger problem then an external vent is going to fix. If this truly were an issue vehicle manufacturers, especially manufacturers of high performance cars, would pulling their hair out finding an alternative.
Don't get me wrong, it's not going to hurt anything to vent your crankcase elsewhere, but it's not going to help anything either.
Tourer
Joined: Jun 2021
Posts: 307
Likes: 506
From: Saskatchewan Canada
Sweet Jesus! I just looked at that Fuel Moto dipstick on Revzilla. $300 for a bloody dipstick, some tubing, a filter and a tiny catch can?
If you're going to do it listen to Msquad and go with the A1. Still too much money in my opinion but it's better than $300.
If you're going to do it listen to Msquad and go with the A1. Still too much money in my opinion but it's better than $300.
Thread Starter
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Stellar HDF Member
Joined: Aug 2011
Posts: 2,765
Likes: 1,802
From: Newnan, GA
Not to that level but the bottom of the filter is always wet when I inspect it. I was going to modify the Dipstick when I ran across the one in my OP.
Thread Starter
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Stellar HDF Member
Joined: Aug 2011
Posts: 2,765
Likes: 1,802
From: Newnan, GA
BTW what type 686 do you have. I have 6" SS 686 Plus I got back in the late 80's. It's one of my favorite revolvers.
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Tourer
Joined: Jun 2021
Posts: 307
Likes: 506
From: Saskatchewan Canada
The regular old 686 with the 6" barrel. I did swap the rubber/plastic grips with a nice set of wooden ones though.
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Grand HDF Member
Joined: Oct 2012
Posts: 3,758
Likes: 196
From: Boise, ID
Get the A1 unit. Much better price & manufactured by a solid company.
Before any Karen's get their panties in a bunch I'm not saying that Fuel Moto is or is not a solid company, just stating the A1 is in fact, solid.
Before any Karen's get their panties in a bunch I'm not saying that Fuel Moto is or is not a solid company, just stating the A1 is in fact, solid.
Oh my, all kinds of opinions.
Here are some facts:
More power with an External Breather System.
Vented dipsticks, vented oil tanks and transmission, all still feed hot, oily, oxygen depleted air into the intake. It is reduced, because some of it is going thru the other vent, but there is still some there.
Here are some photos of what did NOT go into the intake when using and EBS. (There are more at this LINK )
All of the above photos were how much accumulated in Under 5,000 miles.
99% of all who race, vent externally. They don't do this because someone is "selling" them something, they do it because they produce more power by Not putting Any oxygen depleted air from the crankcase into the intake.
Here is a video with more info on the subject:
Here are some facts:
More power with an External Breather System.
Vented dipsticks, vented oil tanks and transmission, all still feed hot, oily, oxygen depleted air into the intake. It is reduced, because some of it is going thru the other vent, but there is still some there.
Here are some photos of what did NOT go into the intake when using and EBS. (There are more at this LINK )
All of the above photos were how much accumulated in Under 5,000 miles.
99% of all who race, vent externally. They don't do this because someone is "selling" them something, they do it because they produce more power by Not putting Any oxygen depleted air from the crankcase into the intake.
Here is a video with more info on the subject:
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