K N FILTER / PRESSURE BRAKE LINES


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ARITHIAN
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K N FILTER / PRESSURE BRAKE LINES

Postby ARITHIAN » Thu Jun 25, 2009 5:42 am



GL1500

OK GUYS I WAS AT MY MECHANIC THIS AM DISCUSSING WHETHER I SHOULD PUT A K+N AIR FILTER ON MY GL1500.
HE TOLD ME NO NOT REALLY, IT WOULD HELP BUT WON'T GET 100% OUT OF FILTER AS YOU SHOULD ALSO CHANGE THE EXHAUST.
HE SAID RIGHT NOW THERE IS 1 PART OXYGEN AND 1 PART FUEL, CHANGING THE K+N FILTER WILL GIVE 2 PARTS OXYGEN AND 1 PART FUEL WHICH MAY BE FELT WHEN STOPPING THE BIKE ( A MINOR BANG OR SOMETHING FROM THE EXHAUST OR SLIGHT OVER-REV).
I WOULD LIKE SOMEONE'S OPINION ON THIS AS I HAVE NEVER READ THAT YOU SHOULD HAVE THE REQUIRED EXHAUST TO GO ALONG WITH THE K+N AIR FILTER FILTER

FURTHERMORE I DISCUSSED WHETHER I SHOULD PUT HIGH PRESSURE BRAKE LINES (TAKE OUT THE RUBBER ONCE AND PUT METAL HOSE ALUMINUM). HE SAID WE WOULD HAVE AN INCREASE IN BRAKEAGE BUT IT WOULD ALTER THE BIKES BRAKE HANDLING, MAY NOT BE TOO SAFE.

I HAVE HAD MANY BIKES IN MY PAST AND AT PRESENT I ALSO HAVE THE APRILIA CAPORNORD 1000 CC WHICH OF COURSE I HAVE MADE ALL THESE MINOR MODIFICATIONS. I HAVE HAD NO PROBLEMS ON THE OTHER BIKES AND WAS SURPRISED TO HEAR THIS FROM THE GOLDWINGS MECHANIC. HE MAY BE RIGHT OR MAYBE HE JUST DOES NT WANT TO WORK OR MAKE MONEY WHO KNOWS....

APPRECIATE ANY INFO FROM ALL

CHEERS
ARIS



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Re: K N FILTER / PRESSURE BRAKE LINES

Postby WingAdmin » Thu Jun 25, 2009 1:32 pm

First off...I don't use or recommend K&N filters simply because I don't believe they provide adequate filtering for the incoming air, particularly in dusty or dirty environments. I'd rather spend my money buying an extra filter each year than have worn rings in my engine that need replacement.

As for adjusting the exhaust...I can't see how that has anything to do with the filter. The K&N filter may allow more free-flowing air, that's it. As for what your mechanic said about the fuel air mixture - that's just totally false.

The ideal fuel air mixture for a gasoline engine is 14.7 parts air to 1 part fuel. If the mixture was changed to double the amount of air to fuel, the engine wouldn't run. The mixture is adjusted in the carburetors, and ONLY in the carburetors. If the air filter is more restrictive, it acts like the throttle was closed slightly more than it is. Having a less restrictive air filter, such as a K&N, makes the engine run as if the throttle is opened slightly more than it is. Think of the throttle as a "restrictor" of air - the filter is just another restrictor. Neither of which have anything to do with the fuel/air mixture.

When using engine braking to slow down, the throttle is closed, and the cylinders have to pull against the resultant vacuum created by the restricted throttle. The K&N could POSSIBLY cause engine braking to be slightly less effective...but I would challenge anyone attempting to "feel" the difference. I can't think of any way it could cause the engine or exhaust to "bang."

NONE of this has anything to do with changing the exhaust - the exhaust has NOTHING to do with the reduced intake airflow restriction by the air filter. The exhaust just allows the exhaust out, and dulls the pressure pulses to quieten the sound.

Overall, it sounds like your mechanic a) has no idea what he's talking about, and b) wants to extract some dollars from your wallet.

As for what you call "high pressure" brake lines. They are actually stainless steel, not aluminum (aluminum stretches - and the point of the stainless lines is that they don't stretch, containing the brake fluid pressure better). They don't have any higher pressure than regular rubber lines - they just don't stretch (as much) as regular rubber lines, so it makes the brakes more accurate, "sharp" and reliable feeling. They are universally an excellent upgrade, and INCREASE safety overall. I put them on my GL1100 this past winter, and it's one of the best things I've ever done on my bike. Pretty well everyone who puts them on says the same thing. They are amazing!


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