BMC filter

[speed750]

(Cykill @ Dec. 11 2006,17:09)

(Shibumi @ Dec. 08 2006,19:40) Not correct. Race filter has half as many layers so flows more, but filters just as well as standard- only difference is you have to clean it at half the interval of the standard. Rule of thumb, change your oil, clean your filter.

+1

stick with the race IMHO

I don't see how you can agree with this statement. Did you read the post from "Professor"? Common sense tells me that if you have a filter with "8 micron" holes in it , then you place 5 more layers with the same 8 micron holes, unless they are lined up perfectly you will trap particles smaller than 8 microns. Not to mention if the media is oil coated, then the more media you have with oil on it, the more chances you have to grab the dust.

I would love to be sitting in a pub with you guys talking this over with some beers.

 

[Shibumi]

(speed750 @ Dec. 11 2006,22:59) I would love to be sitting in a pub with you guys talking this over with some beers.

Ah yes, a good lively debate over a foaming brew is still thr best form of mental exercize.

Not to ruin it, but the website states that it flows more, blocks same level of particulates, but needs said particulates cleaned out more frequently.

Cliff notes debate since we're sans brew.

 

[speed750]

Can't believe everything you read.

 

[Professor]

(Shibumi @ Dec. 11 2006,23:06) Ah yes, a good lively debate over a foaming brew is still thr best form of mental exercize.

Not to ruin it, but the website states that it flows more, blocks same level of particulates, but needs said particulates cleaned out more frequently.

Cliff notes debate since we're sans brew.  

I'll go for the beer

Can you post a link to that. I can't find it on BMCs website.

 

[GPW]

You guys don't want to see the high flow foam filter I made, sprayed with K&N oil to help grab dust particles...

Guess I may have a particles issue too......a dyno proven 6hp w/ mapping on three test bikes, is worth it.  

A few of my filters were used by Land Speed race teams in 2006. I have sold about 85 of them. Making them for one bike right now but may expand to other models in 2007.

 

[TurboSN95]

Who has the best prices on the BMC filters?

 

[Professor]

(GPW @ Dec. 12 2006,06:47) You guys don't want to see the high flow foam filter I made, sprayed with K&N oil to help grab dust particles...

Guess I may have a particles issue too......a dyno proven 6hp w/ mapping on three test bikes, is worth it.  

A few of my filters were used by Land Speed race teams in 2006. I have sold about 85 of them. Making them for one bike right now but may expand to other models in 2007.

I'm all for the horsepower increase….very much so in a race application. Even using them the street is fine by me as long as the consumer is aware of possible wear issues they might have. A detailed oil analysis will reveal what is actually going on in the engine but I would suspect much higher silicone and an increase in wear metals numbers. This would be inline with many experiments in other types of engines and filters.
For someone that rides 500 miles a year on perfect days, there would be less impact than someone that puts 20,000 + miles on a vehicle. I used to keep up with this subject as running 500-800 HP injected alcohol engines on the dirt put a strain on air filter systems. I realize this is not that extreme of an application, but several tests in different venues have had similar results (though less severe results).


Again as long as the end user is aware of the consequences, great!


Greg,

Can you clarify 6hp with mapping? That is a pretty impressive 3-5% increase.
Bike mapped and tuned with a new stock filter vs the same bike mapped and tuned with your foam filter?

When you get your dyno running you might compare running your filter oiled with A foam filter oil designed for polyurethane foam. (Uni, Amsoil, Silkolene). If it will perform along the same numbers as the K&N oil, it should provide a bit better filtration. It might not be worth it if there is a HP loss, however.

I think I’m going to drag race without a filter next year and avoid following another bike down the return road. (mapped for it of course) It is easy enough to stick the filter back in and I’ll be running a different map on the street anyhow.

 

[GPW]

(Professor @ Dec. 12 2006,07:01)

(GPW @ Dec. 12 2006,06:47) You guys don't want to see the high flow foam filter I made, sprayed with K&N oil to help grab dust particles...

Guess I may have a particles issue too......a dyno proven 6hp w/ mapping on three test bikes, is worth it.  

A few of my filters were used by Land Speed race teams in 2006. I have sold about 85 of them. Making them for one bike right now but may expand to other models in 2007.

I'm all for the horsepower increase….very much so in a race application. Even using them the street is fine by me as long as the consumer is aware of possible wear issues they might have. A detailed oil analysis will reveal what is actually going on in the engine but I would suspect much higher silicone and an increase in wear metals numbers. This would be inline with many experiments in other types of engines and filters.
For someone that rides 500 miles a year on perfect days, there would be less impact than someone that puts 20,000 + miles on a vehicle. I used to keep up with this subject as running 500-800 HP injected alcohol engines on the dirt put a strain on air filter systems. I realize this is not that extreme of an application, but several tests in different venues have had similar results (though less severe results).


Again as long as the end user is aware of the consequences, great!


Greg,

Can you clarify 6hp with mapping? That is a pretty impressive 3-5% increase.
Bike mapped and tuned with a new stock filter vs the same bike mapped and tuned with your foam filter?

When you get your dyno running you might compare running your filter oiled with A foam filter oil designed for polyurethane foam. (Uni, Amsoil, Silkolene). If it will perform along the same numbers as the K&N oil, it should provide a bit better filtration. It might not be worth it if there is a HP loss, however.    

I think I’m going to drag race without a filter next year and avoid following another bike down the return road. (mapped for it of course)  It is easy enough to stick the filter back in and I’ll be running a different map on the street anyhow.

We saw (4-6) over the OEM filter with mapping and pipe. With the foam filter it was clear the map required more fuel, especially up top. Same dyno (3) seperate bikes. On a forth test the results showed (2) HP and (4) foot pounds of torque. We ruled out that test because the numbers were too far off. I just ordered another foam filter spray...I think it was Amsoil, not sure. The K&N spray is a little runny on the foam so it has to be lightly applied in coats. Getting ready to play with the Busa filter and will see what happens on the dyno. I will also retest everything above on my dyno and report back in a few weeks as the last dyno was a Land and Sea Dyno with some issues. We will do loads of testing to come up with formula's that work for each application street/strip/road race...

 

[TurboSN95]

Anyone know if you can clean a BMC filter with a K&N cleaning kit? Or do you need to get the BMC cleaning kit?

 

[frisbee]

(GPW @ Dec. 12 2006,04:47) You guys don't want to see the high flow foam filter I made, sprayed with K&N oil to help grab dust particles...

Guess I may have a particles issue too......a dyno proven 6hp w/ mapping on three test bikes, is worth it.  

A few of my filters were used by Land Speed race teams in 2006. I have sold about 85 of them. Making them for one bike right now but may expand to other models in 2007.

I have a BMC in my bike and have always had a K&N before on my 02. They both worked great . I am interested in your filter GPW.

 

[HiYaBruceA]

I installed the BMC race filter last weekend on my '04 and it has made a very noticeable improvement in acceleration as well as a throatier exhaust note. I run Brock's street megaphone with his airbox mod, PAIR blockoff kit and PCIII. I had it dyno'ed and custom mapped before buying the BMC and it showed 156HP at the rear wheel. I don't know what it is with the BMC but it is definitely a mean bike made meaner.

HOWEVER, BMC recommends cleaning the race filter every 25.000 km. That's only 15.5 miles, unless the '.' in Italo/Euro terminology really means ',' then cleaning is required every 15,500 miles. I don't know. Anyone have an answer on this?