Author Topic: Individual Airfilters  (Read 3435 times)

0 Members and 1 Guest are viewing this topic.



Offline Yoshi823

  • Biker to the bone.
  • Enthusiast
  • **
  • Posts: 205
  • Never too old to be a biker
Individual Airfilters
« on: December 02, 2009, 05:25:58 AM »
When mounting up individual airfilters it's also a good idea to support the weight of the carbs by adding a ty-rap or zip-ty from the carbs to a frame member.It's not nice when the carbs fall off the inlet manifolds...you can only do the clips up so tight.
Bikes...they're in the blood.

Yamaha 2001 R1
Yamaha 1990 FZR1000R EXUP
KTM 2004 450 EXC RFS
Honda 1997 XR400R
Honda 1988 CB125T2

http://www.cb750cafe.com/bikes.php?cat=3&id=67



Offline kghost

  • Really Old Timer ...
  • ******
  • Posts: 6,699
Re: Individual Airfilters
« Reply #1 on: December 02, 2009, 05:32:24 AM »
I actually built a bracket for mine that mounts between the engine case bolts and the 2 - 3 carbs.

Supports them.

Also not nice when your fuel in the bowls vibrates excessively.
Stranger in a strange land



Offline wannabridin

  • Patience made me a
  • Master
  • *****
  • Posts: 2,219
  • -Garrett
    • 1976 CB750K, under construction:
Re: Individual Airfilters
« Reply #2 on: December 02, 2009, 12:50:51 PM »
wouldn't the fuel in the bowls vibrate with the bracket mounted to the engine?  it seems to me like a replacement set of rubber isolaters would absorb a good amount of engine vibrations...
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...



Offline kghost

  • Really Old Timer ...
  • ******
  • Posts: 6,699
Re: Individual Airfilters
« Reply #3 on: December 02, 2009, 07:59:26 PM »
wouldn't the fuel in the bowls vibrate with the bracket mounted to the engine?  it seems to me like a replacement set of rubber isolaters would absorb a good amount of engine vibrations...

Well the engine is solid mounted to the frame.

Best way was of course how Honda did it...Insulators - carbs - rubber boots - Airbox.

Point is to provide some support to the carbs
Stranger in a strange land



Offline motocyconomad

  • Expert
  • ****
  • Posts: 1,267
Re: Individual Airfilters
« Reply #4 on: July 29, 2011, 01:13:42 PM »
pic of bracket?



Offline lucky

  • Really Old Timer ...
  • ******
  • Posts: 6,629
Re: Individual Airfilters
« Reply #5 on: August 24, 2011, 12:26:29 PM »
Now I am glad I did not remove the air box supports from the frame. I can use the tabs for a support for the carbs with filter weight.



Offline lucky

  • Really Old Timer ...
  • ******
  • Posts: 6,629
Re: Individual Airfilters
« Reply #6 on: February 03, 2012, 04:01:07 PM »
wouldn't the fuel in the bowls vibrate with the bracket mounted to the engine?  it seems to me like a replacement set of rubber isolaters would absorb a good amount of engine vibrations...

Well the engine is solid mounted to the frame.

Best way was of course how Honda did it...Insulators - carbs - rubber boots - Airbox.

Point is to provide some support to the carbs

Those rubber boots holding the carbs on the engine do not stop all the vibration.
Besides they are rock hard-most of them.
Why the manufacturers went from phenolic blocks isolating the carbs from the cylinder head HEAT to the rubber boots, was to solve the heat problem and the vibration problem. But the heat usually ruins the rubber boot.