| Author | Message | ||
     Johnny8462 |
I have the jardine pipe, race ecm, and k&n on my 05 xb12r. I was thinking about cut holes in the intake cover like some others have done in there post. I was wondering if i have to reroute the 2 breather tubes that are by the sensor or if i can just leave them alone? | ||
| Bishopjb1124 |
You can leave them were they are at, it will not affect anything. Jimmy | ||
| Ochoa0042 |
isnt it that: at higher speed there is a ram air effect for the closed air boxes, and that the ones that are cut open dont have it making them have neutral air in there? | ||
| 1_mike |
As Ochoa says...sorta - Why spend all the effort cutting all of these huge holes when the throttle body is only...what...49mm...? And as he states...there IS some truth to that statement. While the "ram air" effect isn't gonna return 45hp. or anything...it WIll help 'cooler air" to enter the T.B. An open air box is open to what...HOT air from between the frame rails...!! AND...it's somewhat closed off to fresh air because the small opening between the frame and the air box cover..I'd bet that very little air would actually enter at that small gap. You want more air, remove and or "reshape" the air restricter from the frame/air box so more air can get in thru the...what'dya call it, oh yea, the...."air scoop"...! Now putting scoops, louvers, other openings in the air box cover...and directing the openings at matching openings in the air box top...that would be worth some effort IF a high pressure area can be found. But then...no driving in the rain. Sometimes I just don't understand how many wives tales get out there. You want to see a restricted air intake..look at the 1125 "ram air". Mike | ||
| Old_man |
+1 | ||
| Ochoa0042 |
....You want more air, remove and or "reshape" the air restricter.... meaning cut the snorkel to be less restrictive  hope that wasnt a bashing on me  , its isnt ram air in the flesh as some buell race bikes have, but it does send a positive feed to the box  (Message edited by ochoa0042 on April 10, 2009) | ||
| Iamarchangel |
The old wives tale is correct since ram air only works at about 80 mph and adds only a small percentage. The best results are at speeds above 150 mph. If you're up at that speed and you need that much more, go for it. The rest of us are wasting our time. | ||
| Pashlipops |
I did some tests and the snorkel actually results in slightly higher airbox pressure, i.e. leave it in for better performance. Read here.... http://www.ukbeg.com/modules.php?name=Forums&file= viewtopic&p=70223#70223 | ||
| 1_mike |
Ochoa - No...I was agreeing with your statement! Reshaping the lower opening to better "grab" the air as it flows past the intake opening will help direct the air better up into the tube. If done correctly, it "can" offer some amount of "ram" air into the air box. At what speed......don't know. You'd need a pressure transducer or two to verify pressure and then you can figure at what speed. My guess...would be somewhere in the 65 to 75mph range from tests I've done in the past. This "would" depend on the modifications. I removed my "thru the frame tube" so more air can get to the cylinder head. The engine will pull what it wants out of the air stream. This bike won't be raced nor will it see much over 90mph very often. I have my 1125 for that fun! To do it "correctly"...a 90 degree angle scoop would need to be built inside of the left side scoop to properly direct air "up" into the sealed air box. But then the cylinder head would receive less air. SO...that 200+ dollar right side air scoop would be required to supplement cool air to the outside of the engine. Mike | ||
| Ochoa0042 |
I beg to differ, there is a third senario that should be tested, cut the snorkel in half. im sure the pressure would be greater.. the problem with the 'no snorkle' test is that the airbox is not sealed to the hole in the frame. and because of that gap found between the airbox and the frame hole, pressure is lost.... the snorkle is open wide at the top and shrinks in diameter going down through the frame and to the air scoop, and obviously constricting the air volume.... If you cut the snorkle in half the air volume allowed in is maximized, and there is no loss of pressure because there is a air tight seal at the top of the frame... We need the third sinerio!!! flame on | ||
| Pogue_mahone |
ram air works in the situation where u have a good section of reasonably straight and long intake tube.small airbox and many bends wont work. look at vw high performance or even v8's with tunnel rams and independant runner setups on vw's.long/tall intake manifold and small to large velocity stacks and in general, a straight shot to the combustion chambers.lots of turns and direction changes before u even hit the intake port is not so good. hard to get the air mass moving and shove more air in with momentum of the air column in the ram air section, when it takes turns and changes direction. |
