Water Manometer (for balancing throttle bodies)

[Indyvette84]

They haven't been bored at all. So, that's odd.

[geekinavette]

It could be that the manometer was connected to the wrong port...only the center vacuum port is restricted (at least as I recall it is the center port), the other two will provide full manifold vacuum.

[Cartrax]

Have the TB's been overbored? If so then the restricted balance port is no longer restricted and is pulling full engine vacuum...which is much more than a water manometer can measure.

Yes, mine have been bored to 2". Can you reference method for balancing in this case. Thanks.

[geekinavette]

Yes, mine have been bored to 2". Can you reference method for balancing in this case. Thanks.

Man good threads just never die do they!

Yeah you will want to do the single manometer "differential" method as described in the original post.

Bill

[Cartrax]

Man good threads just never die do they!

Yeah you will want to do the single manometer "differential" method as described in the original post.

Bill

It is, thanks.