| Author |
 Topic  |
|
|
rastakvajanas
Prague
Czech Republic
3 Posts |
Topic started on 05/23/2012 at 03:01:25 AM
|
Hello to all. Could somebody explain me, how works this "aircut stuff" (No.9 in the picture below)? I took the carb to pieces and tried to understand the function of this component, but unsuccessfully... What would happen, if I sealed off both the aircut valve port and the top front carb port (theese two ports are usually connected). Would it make any change?
I try to understand how my carb works, so thanks a lot for your patient answers.
Jan
 |
Honda NX 650 Dominator
1991, Swiss version, mildly tuned (airbox, carb, exhausts, desmogged) |
|
|
dave_cl
Central NY
USA
1404 Posts |
Posted on 05/23/2012 at 09:50:49 AM
|
| When the valve sees high vacuum it richens the mixture a little to help stop popping on deceleration. |
01 XR650L - Keihin 158 main jet, 55 'long' pilot jet, screw out 2.5 turns, stock needle shimmed 0.035, slide holes drilled to 5/32, dynojet shorter CV spring installed, foam filter, snorkel removed, stock exhaust, air pump removed, thermometer dipstick, XCMH fr/r tires, 14-48 spkts. |
|
|
rastakvajanas
Prague
Czech Republic
3 Posts |
Posted on 05/24/2012 at 01:21:25 AM
|
| Thanks Dave. |
Honda NX 650 Dominator
1991, Swiss version, mildly tuned (airbox, carb, exhausts, desmogged) |
|
|
rastakvajanas
Prague
Czech Republic
3 Posts |
Posted on 07/09/2012 at 03:04:13 AM
|
I did some research  ... What would you recommend?
1) leave it as it is (i.e. connected ACV and top-front carb port) or
2) remove the connection, seal both ports and leave the spring in ACV (so that this particular system remains permanently in lean condition) or
3) remove the connection, seal both ports and take out the ACV spring (i.e. the acv system remains permanently rich)
I will try it all anyway, but any thoughts appreciated, thanks. |
Honda NX 650 Dominator
1991, Swiss version, mildly tuned (airbox, carb, exhausts, desmogged) |
|
|
Admin
4Strokes.com
USA
7798 Posts |
|
|
dave_cl
Central NY
USA
1404 Posts |
Posted on 07/16/2012 at 3:16:59 PM
|
The 'lean' setting you would get from disconnecting it would leave it in the 'normal' position.
But, no advantage gained by disconnecting it. |
01 XR650L - Keihin 158 main jet, 55 'long' pilot jet, screw out 2.5 turns, stock needle shimmed 0.035, slide holes drilled to 5/32, dynojet shorter CV spring installed, foam filter, snorkel removed, stock exhaust, air pump removed, thermometer dipstick, XCMH fr/r tires, 14-48 spkts. |
|
| |
Topic |
|
|
|
NX 650 Carb - "aircut stuff"
