minicooper Posted May 29, 2020 Report Share Posted May 29, 2020 I'm installing an electric 6 volt pump, replacing the mechanical pump. Some install questions, if anyone has a minute? 1) Is it a bad idea to leave the mechanical pump in place and use the electric as a pusher? 2) If I remove the mechanical pump, is it better to make a block-off plate or plug the pump inlet and outlet ports with pipe fittings? 3) Even though the 6 volt pump I have is rated at 4psi, is it a good idea to put in a pressure regulator (I have a new Holley regulator on hand from another project)? 4) Should I install an oil pressure cutoff switch for safety (the pump instructions mention it)? 5) Since my truck is 6 volt positive ground, do I ground the positive pump terminal to the frame or the negative terminal? Thanks so much, Roland Quote Link to comment Share on other sites More sharing options...
Jeff Balazs Posted May 29, 2020 Report Share Posted May 29, 2020 2 hours ago, minicooper said: I'm installing an electric 6 volt pump, replacing the mechanical pump. Some install questions, if anyone has a minute? 1) Is it a bad idea to leave the mechanical pump in place and use the electric as a pusher? 2) If I remove the mechanical pump, is it better to make a block-off plate or plug the pump inlet and outlet ports with pipe fittings? 3) Even though the 6 volt pump I have is rated at 4psi, is it a good idea to put in a pressure regulator (I have a new Holley regulator on hand from another project)? 4) Should I install an oil pressure cutoff switch for safety (the pump instructions mention it)? 5) Since my truck is 6 volt positive ground, do I ground the positive pump terminal to the frame or the negative terminal? Thanks so much, Roland Roland; IMO you want to just remove and blank off the old mechanical pump altogether. Other wise it can become a potential source of fuel getting into the engine sump. Not good! Best thing is to put a regulator in. Yes on the safety switch. Ground the pump to the frame. Hth, Jeff 1 Quote Link to comment Share on other sites More sharing options...
bkahler Posted May 30, 2020 Report Share Posted May 30, 2020 22 hours ago, minicooper said: 5) Since my truck is 6 volt positive ground, do I ground the positive pump terminal to the frame or the negative terminal? Roland, You connect the positive terminal to the frame. Quote Link to comment Share on other sites More sharing options...
minicooper Posted May 30, 2020 Author Report Share Posted May 30, 2020 36 minutes ago, bkahler said: Roland, You connect the positive terminal to the frame. Thanks, wasn’t sure if that would reverse the pump direction, or not ?. Quote Link to comment Share on other sites More sharing options...
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