Changing from electric fuel pump to mechanical

[Jim McKenzie]

I've had a recent bit of an issue with sputtering (and found it to be a cracked plastic fuel filter allowing air into the system)...but was advised in the process by a couple folks to perhaps change my aftermarket electric fuel pump to a mechanical.

I read up on it and learned that in an accident it's possible, though not likely, for the pump to keep going and pump gas, possibly leading to a fire.

So I bought a new mechanical X1/9 fuel pump, with gasket.

I was wondering if any of the board experts had an advice (photo) of how to change and mount this. Anything I should look for? Look out for?

 

[Jim W]

I read up on it and learned that in an accident it's possible, though not likely, for the pump to keep going and pump gas, possibly leading to a fire.

FWIW, one can buy an aftermarket inertia activated electric pump shut-off switch...

http://www.pegasusautoracing.com/productdetails.asp?RecId=87

However seeing that you bought the mech. pump already... Removal and installation is straight forward and documented in the service manual. I know that the Haynes manual has good illustrations.

 

[bbrown]

I changed BB-4RE from electric to mechanical

It had one of those 'clacker-type' electric fuel pumps in it to replace the original mechanical fuel pump, so I got rid of
the thing and replaced the mechanical pump with a new one. Worked perfectly fine.

 

[TonyK]

Another option.

Since I installed Megasquirt on the 79 X I had the very same issue.

Going through the MegaSquirt monster manual they suggest obtaining an impact sensor from any Ford car which is located in the rear trunk fender well, I think drivers side. For $2 I picked one up at the wreckers. This is resetable should someone run into your car and it opened up the electrical circuit to the fuel pump.

I am surprized Bob Brown did not suggest this.


TonyK.

Grimsby Ontario Canada.

 

[Black-Tooth]

Well... considering that almost every new car made today...

... uses an electrical pump.

I'm not aware if they have any inertia activated shut-off switches though... maybe someone can chime in.

Unless I was racing, I don't think the threat is great enough to warrant going back to mechanical or installing the cutoff switch... but you do what makes you feel comfortable.

 

[martijn]

I've put a relay in the + of the pump. The relay is activited bij the idiotlight for oilpressure. No oilpressure no gas pumping. Also failsave when you suddenly looses the oilpressure.