Re: Fuel pump by pass

Posted by TxGoat On 2023/8/30 7:25:54

I'd be inclined to remove and store the mechanical pump. Don't trash it! They're getting scarce.


A block off could be easily fabricated,
and removing the pump will prevent any further wear on it. It will also increase airflow in the underhood area and prevent any issues with noise, oil leakage, rubber shedding into the crankcase, etc, related to the pump.

You will lose the vacuum booster function, but for that to work dependably, you'd need to rebuild the pump.

Many modern vehicles use an electric vacuum pump, and adding one of those and a vacuum reservoir would provide better than stock wiper performance.


Ive had a number of cars with vacuum wipers and no booster. I've found them adequate for most driving situations.

I believe that Packard recommended a fuel pump pressure of 2.5 to no more than 3 lbs. Most electric pumps will exceed that. I'd want to use a good pressure regulator in conjunction with an electric fuel pump.


Excess fuel pressure will tend to cause difficulties with carburetor flooding and poor fuel mileage due to inconsistent regulation of fuel level in the carburetor bowl.