1956 century riviera

Lars5

New Member
About 6 years ago I purchased a 56 century riviera. The previous owner removed the mechanical fuel/wiper vacuum pump in favor of an electric fuel pump. When he did so he moved the wiper vacuum line to a fitting by the brake master cylinder. The brake pedal feels like it’s much to firm and requires what I consider more effort than it should to stop the car. Did he inadvertently reduce the power brake effectiveness? If I reinstall a factory type fuel/wiper vacuum pump and keep the electric as a primer, should the brake pedal return to what I consider easier to press?
 

luckyd

Active Member
Try disconnecting the wiper line and plugging it to see if there is a difference in your brake pedal.

Have you checked out your brake system to make sure everything is OK and functioning properly?
The two stage fuel pump produced extra vacuum to assist with the braking.
I changed to an electric wiper/washer and installed a front disc conversion. I left the two stage
fuel pump and it all works well.
 

322bnh

Active Member
The two stage fuel pump produced extra vacuum to assist with the braking.
Nope...only assists the wipers during low engine vacuum condition like driving uphill or passing. The brake booster gets vacuum directly from the manifold and stores enough vacuum for a few stops.
 
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