Jump to content

Throttle Sync


A357man

Recommended Posts

How do you verify that both butterflies are closing at the same time when doing a throttle synce? Mine are covered by air intake hoses and I do not know what tool to use to remove them or even if it is necessary. Thanks.

Link to comment
aggieengineer

There's no need to see inside the throttle bodies. What needs to be snchronized is the intake manifold pressure across the range of throttle movement. I bought a Twinmax, which connects to the throttle bodies and shows any difference in pressure. There are also various manometers available.

Link to comment

ISFA [/i]closing[/i], when the throttle grip is at released, both TBS should be on their idle stop screws. The key to sync. is that they both open equal. Not mechanically, but vacuum equal.

Link to comment

The throttle cables at each TB wrap around a bell crack / pulley on the back side of the TB. That crank has a tab that comes to rest against a stop screw. It is toward the bottom rear inside edge. The bell crack should set on the stop, not be hanging off the end of the cable so to speak, when you are at idle. If is not, one or both of your cables is too tight.

Link to comment
The throttle cables at each TB wrap around a bell crack / pulley on the back side of the TB. That crank has a tab that comes to rest against a stop screw. It is toward the bottom rear inside edge. The bell crack should set on the stop, not be hanging off the end of the cable so to speak, when you are at idle. If is not, one or both of your cables is too tight.

 

Ken,

Are these TB bell cracks anything like the Liberty Bell's crack? lmao.gif

OK I'm leaving. grin.gif

Link to comment

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...