Interest in Electric Vacuum Pump Conversions?

Interested in an Electric Vacuum Pump

  • Yes - but only a ready to run, drop in kit

    Votes: 1 5.6%
  • Yes - and I am comfortable crimping some wires

    Votes: 12 66.7%
  • Yes - and I'm fine running down all the various parts

    Votes: 7 38.9%
  • No - I'm just here killing time at work...

    Votes: 4 22.2%

  • Total voters
    18

hacked89

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Those are meant to run HVAC stuff, totally different class of pump. I bought one some years ago to run a mini vacuum fixturing prototype, I will say it did better than I expected it to do, but it certainly does not move enough volume for brakes. No system is perfect, with the hydroboost if you toss a belt or have an engine failure you're out of luck as well (I guess, same as the stock setup). Does it have some sort of accumulator so you get one or two more assists without the engine on?





Just left to run, it heats up in a hurry. But as I said earlier, in a normal stopping scenario, it only runs a second or less to catch back up. I am sure if you just sat there and pumped the brake pedal continuously for a while you could kill it, but that's nowhere near a normal operating scenario. I've thought about buying another pump to see how long it'll chooch continuously before burning up.

The health of the vacuum system would be paramount though - if you've got a leak and it's running frequently to compensate for that, that's going to be a problem. There are gotchas with this that do make me apprehensive about selling anything related to this at all. The idea of getting sued because someone wrecked their rig after burning up a pump because that vacuum leak "wasn't that bad" makes me wonder if this is a good idea or not.





When I bought my truck I found a brand new Motorcraft pump but decided to pass since I was spending a lot of money elsewhere on it and hadn't diagnosed the system yet..probably don't need to tell you that's $90 I really wish I would have spent, hah.
I think your heads in the right place. When you design stuff like this you have to think about Becky driving the truck continuously pumping the brakes or stuck for hours in stop and go. And liability.
 

HudsonvilleHornet

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I'm going to keep testing/developing, and have no intention of taking it out of my rig, but with the world we're in these days this may die due to liability concerns.
 
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oregon96psd

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My question would be why? Why add more bs to the truck, if you need to replace the correct belt driven pump every couple decades who cares lol. What’s the advantage of your “kit”?
 

Olds64

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Interesting idea, but I'd be reluctant to modify the vacuum pump on my Bullnose truck since the VRV uses vacuum to send a signal to the transmission modulator.
 

drewr13NJ

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Following... Seems like a good idea, but I understand the liability issues. I've wanted to do a Cummins conversion on previous gas-powered trucks and thought this would be a good idea if I couldn't find a vacuum pump for the engine. Unfortunately, I have learned that most electric vacuum pumps tend to be more of a helper than a primary source of vacuum. I have a v-belt setup on my truck, and its fine. Was replaced by previous owner so I should be good for a while.

I feel like this system would be fine if it is sealed up and has a canister to prevent the pump from running all the time.
 

The_Josh_Bear

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You could skip the vac assist and go straight to hydraulic. Some Volvos run electric over hydraulic brake assist, my S40 has it. But for all that just do hydroboost...
 

PossumTruck

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I hear those tesla pumps are pretty good. I considered one in my very-base truck where the pump literally only operates the booster. I ended up going with another belt-driven pump, but I have considered both e-pumps and hydroboost. Best of luck for getting it worked out.
 

HudsonvilleHornet

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My question would be why? Why add more bs to the truck, if you need to replace the correct belt driven pump every couple decades who cares lol. What’s the advantage of your “kit”?

Doesn't hurt to have options. Reman pumps seem to be a mixed bag from what I saw; this is put together with new OEM parts. The kit would allow you to just drop it in and run a couple wires, no fussing with figuring out mounts, relays, control switches, etc.

Interesting idea, but I'd be reluctant to modify the vacuum pump on my Bullnose truck since the VRV uses vacuum to send a signal to the transmission modulator.

I'm not sure how the modulator works to be honest, I would have thought a more constant vacuum level would been an advantage but if it relies on vacuum fluctuations somehow, then maybe not.

Following... Seems like a good idea, but I understand the liability issues. I've wanted to do a Cummins conversion on previous gas-powered trucks and thought this would be a good idea if I couldn't find a vacuum pump for the engine. Unfortunately, I have learned that most electric vacuum pumps tend to be more of a helper than a primary source of vacuum. I have a v-belt setup on my truck, and its fine. Was replaced by previous owner so I should be good for a while.

I feel like this system would be fine if it is sealed up and has a canister to prevent the pump from running all the time.

As far as I could tell, these pumps are it for their OEM application. Would be good to do more legwork on this though.

You could skip the vac assist and go straight to hydraulic. Some Volvos run electric over hydraulic brake assist, my S40 has it. But for all that just do hydroboost...

I wanted something a little less invasive than the hydroboost conversion, that's a great deal of my motivation for electric.

I hear those tesla pumps are pretty good. I considered one in my very-base truck where the pump literally only operates the booster. I ended up going with another belt-driven pump, but I have considered both e-pumps and hydroboost. Best of luck for getting it worked out.

Thanks!


Update is that there's no update other than it's still working when I do drive the truck, life's got me pretty busy right now, more so than I'd like really but that's how it goes. It's off the road anyway now that we're in to road salt season..
 
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