Anyone running a pre-pump filter with a Holley red or other elec pump? I was thinking of running one, but I took my pump apart last night before installing my moose pump to check the screen in it. There was barely anything on it. I am going to eliminate the factory filter for a frame mounted unit. I was going to run a pre and post filter, but now im thinking of just a post and not putting the extra stress on the pump of sucking through a filter.
Pre-pump filter
- Thread starter idipwr
- Start date
icanfixall
Official GMM hand model
We really don't need a pre pump filter. That would mean our fuel will be filtered twice before it gets to our stock location. Remember that all diesel fuel is prefiltered at the delievery pump. I don't know what micron filtration they are but its a filter. Plus getting any more out of the fuel isn't going to be easy. Some time back a study was done on the micron filtration of differant filters. The ford filter was the lowest micron rating and fram was the highest micron filtering. I think fram was only able to remove boulders from the fuel....
Ford was something like 10 microns... I'm kinda weak on the exact numbers...
Ford was something like 10 microns... I'm kinda weak on the exact numbers...
BioFarmer93
OPEC Hater
Run a 40m pre-red just to keep the non-filling station-pump chunks out, it won't slow the delivery down enough to note. Also, it was pretty much mandated here a year ago- what's changed guys?
CDX825
filtration nut
My water separating filter is pre pump.
International used the same setup on their IDI trucks except with it before the mechanical lift pump.
International used the same setup on their IDI trucks except with it before the mechanical lift pump.
MIDNIGHT RIDER
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>>> HARD LESSONS <<<
Regardless of how pristine the fuel you put in your truck is, sooner or later, that little screen in the pump is gonna clog up and shut you down, usually in the most innopportune place and at the most inconvenient time.
The light is going to turn GREEN, you are gonna get right in the middle of the intersection, and then you will experience that sick helpless feeling that one gets when it becomes evident that the big heavy truck is gonna shut-down and there is absolutely nothing you can do but hope it makes it out of the intersection.
In the stress of blowing horns and trucks whizzing past, the last thing you are going to think of is gonna be that hidden little screen.
After swapping fuel-filters and calling a wrecker and exhausting all possibilities, it will become evident that the pump is no longer moving fuel.
You will head to the parts-store and lay down the cash for another new one.
When you remove the fittings from the old "dead" pump, then, and only then, will you find the real problem --- a big slug of **** lodged against that screen.
I am adamant about keeping at the very least a simple inline filter immediately ahead of every lift-pump, be it electric or mechanical.
The fact that most of the crud stops in the in-expensive pre-filter more than pays for itself by saving the main fuel-filter to catch the tiny stuff.
Regardless of how pristine the fuel you put in your truck is, sooner or later, that little screen in the pump is gonna clog up and shut you down, usually in the most innopportune place and at the most inconvenient time.
The light is going to turn GREEN, you are gonna get right in the middle of the intersection, and then you will experience that sick helpless feeling that one gets when it becomes evident that the big heavy truck is gonna shut-down and there is absolutely nothing you can do but hope it makes it out of the intersection.
In the stress of blowing horns and trucks whizzing past, the last thing you are going to think of is gonna be that hidden little screen.
After swapping fuel-filters and calling a wrecker and exhausting all possibilities, it will become evident that the pump is no longer moving fuel.
You will head to the parts-store and lay down the cash for another new one.
When you remove the fittings from the old "dead" pump, then, and only then, will you find the real problem --- a big slug of **** lodged against that screen.
I am adamant about keeping at the very least a simple inline filter immediately ahead of every lift-pump, be it electric or mechanical.
The fact that most of the crud stops in the in-expensive pre-filter more than pays for itself by saving the main fuel-filter to catch the tiny stuff.
typ4
Full Access Member
I use a detroit primary pre pump, tired of crap from the stations thet dont filter the dispensed fuel.
ghunt
Full Access Member
What's a good micron rating to use as a prefilter then?
I had actually been considering throwing a Cim-Tek 144 micron wire mesh filter ahead of my electric pump whenever I got around to installing it, but now I can't get that filter anymore...so maybe a 30 micron would be alright, I dunno.
I got a little gasser inline filter made for carbed vehicles but it just looks so dinky. It is clear glass though, which I guess is one thing it has going for it
I had actually been considering throwing a Cim-Tek 144 micron wire mesh filter ahead of my electric pump whenever I got around to installing it, but now I can't get that filter anymore...so maybe a 30 micron would be alright, I dunno.
I got a little gasser inline filter made for carbed vehicles but it just looks so dinky. It is clear glass though, which I guess is one thing it has going for it
Since I still run the stock mechanical pump, I use a simple fuel injection filter from a Hi-Po car just aft of the tank switch. Then I change it frequently since it's cheap enough insurance and it saves on the spin-on (which is also changed frequently) and who knows what else. I'm a firm believer of frequent maintenance to prevent having to call for help or crawl in the snow if I don't have to.
