Potential new pump for FN74 system-Good and Bad - Page 2 - Diesel Forum

JOAT · 12-13-2005, 12:18 AM

Yikes, really dropped the ball on this one [img]/ubbthreads/images/graemlins/eek.gif[/img]

Webshots pic of seal kit 3167 for 5110FI Pump

I didn't have the pump apart, so measurements are approximate taken from the seals.

-Large o-ring appears to be size -033 (2")
-Small o-ring appears to be size -029 (1 5/8")
-Seal -OD 0.75" -ID estimated 0.30" Need to measure shaft -Thickness 0.25"

Charlie_M · 12-13-2005, 10:07 PM

[ QUOTE ]
I have a Mallory 5110fi in my setup. Bought it used off EBAY, and have put over 6000 miles on WVO so far, no problems. It runs between 70-90 psi depending on temp, and has 180 degree oil recirculating thru it. Hangs horizontally in front of the RR wheel well and has seen a fair amount of wet roads.

[/ QUOTE ]

Is this pump still hanging in there for you? Do you regulate the pressure ? Thanks.

Charlie

JOAT · 12-13-2005, 11:31 PM

The 5110FI still works great. I have the Mallory 4305m regulator holding the pressure to around 75-80psi at the heads, so with my check valve dropping the pressure 5psi, that means the pump is seeing 80-85psi at up to 190*F. I mostly run it commuting Oakley to San Jose, so it is on for 1.5 to 2 hours at a stretch. It was used when I got it and has had a slight seepage between the pump body halves, but that hasn't got any worse yet. Will replace the seals eventually.

I have my setup plumbed so that the filter is on the suction side, and the return fuel from the regulator goes back between the pump and filter. This gives very little vacuum for the pump to work against as only fuel used by the engine goes thru the filter. Usually no noticeable restriction on the vaccum gauge in the filter, tho recently with 6-7 k on the filter and cold weather it will pull 2-4 inches under load. I'm going to insulate around that area better to see what happens, then change the filter.

Schematic of my system on a 95 PSD
The pressure relief valve is not needed even with the system deadheaded and no way for fuel to bleed back from the heads. No fuel has came thru it yet at the 150psi setting.

BTW Charlie got any new info on the insurance thing? Theres a thread running in this forum HERE

Charlie_M · 12-14-2005, 12:41 AM

Regarding insuarance... I set everything up with my insurance man on Friday - He called Ross Massey and got things straight before we finalized things. My insurance guy had a hiccup with his computer today otherwise I would be tonight preparing my forms to mail to the CDFA. I expect to be doing this in the next day or so. Once I receive my 06 license in the mail I will know all is well and will publish my insurance man's info. It took me a while to find the right guy. I would say it helps to find an insurance man who is kind of into cars. If you'r einterested in his info now let me know and you can have it for sure. I was jsut waiting until I am 100% sure this is all going to work before sneding out a message that I have this thing solved. I'd call my confidence level now at 80%+. The solution was an umbrella, as I originally suspected. THe umbrella cost me ~$450 for the year, but then the guy saved me ~200 per year by moving my homeowner's insurance to him (which you must do for him to write the umbrella). So... somewhere in the range of $250 I guess? The way I'm looking at it is that I probably should have had an umbrella anyway just on G.P.'s... so the legislature gave me the kick I needed to finally get that done.Now I hope it works!

I'll confirm once I have everything in hand and I know it works - and if you want the info before then let me know you're certainly welcome to it. He is in south san jose - which may be a bit out of the way for you but maybe worth it if you only need to make one trip a year.

Charlie

JOAT · 12-14-2005, 09:01 AM

Thanks, I sent you a PM

fordnut74 · 01-09-2006, 01:04 PM

Just a follow up. That Mallory has been working out great!! I put a pressure gage inline before the filter and possibly part of the problem with the Aero is that as the filter plugs, the pump pressure goes up. With the Mallory I have seen in excess of 160psi!! [img]/ubbthreads/images/graemlins/eek.gif[/img] But no blown lines, and after a teardown and inspection, no noticeable wear or issues with the Mallory. And of course this is only when I start to notice the pressure dropping below 75 on my fuel rail pressure. My thoughts are that Aero is just can't handle that kind of pressure with the "composite" parts. Again, How I went for a year with no Aero issues at all, I do not know [img]/ubbthreads/images/graemlins/shrug.gif[/img] A redesign is in the works to alleviate this issue altogether though.

JOAT · 01-09-2006, 02:42 PM

Interesting. Wow, 160 psi!

With my return looped back between filter and pump, and filter pre-pump, I can tell the filter is clogging when it starts pulling a vacuum in the return line.

mm0015 · 01-09-2006, 02:47 PM

Thanks for the update Jason!

Mark

ToddT · 01-09-2006, 03:56 PM

What are you using for a pre-pump filter? I'm talking about a filter between the veggie tank and the Mallory. Is the big Donaldson you originally used (FN74) placed between the veggie tank and the Mallory pump?

If so, do you have a high pressure filter between the Mallory pump and the engine? I've seen a lot of in-line billet filters that have washable 10 micron screens, including some from Aeromaster.

Thanks for the info.

Todd T

RLDSL · 01-10-2006, 02:33 AM

I ran a Mallory pump in a gas burner chevy van a couple of years back. Fuel delivery was great, but those pumps are very unforgiving of any contamination going into them. I don't know how well they'l hold up to veg. they'd have to suck through a stout filter to keep from jamming ( I had a fram racing canister gas filter on mine and still had it lock up once from a small particle) .
doing a lot of long distance traveling the mallory would require rebuilding every 20K miles or so I carried two brush sets and seal sets at all times. This was a necessity because i found the first time that nobody had these parts......anywhere ( lots had them in their catalogs, but nobody had them on the shelf ) and i had to get them from the manufacturer in Nevada, took a few weeks to get them
The good: very easy to rebuild on the side of the road.Took longer to get it off the frame than to rebuild it.

I just bought a new pump for my '92 f350 that I'm doing a WVO setup on. I picked up a Facet Dura lift.11 psi, 30+ gpm It's a factory pump for a Carrier Transcold reefer unit. designed to lift fuel 10feet, and run continuously for a VERY long time unlike the performance pumps. strong on the suction side so it should have no trouble pulling veg to the pump mounted under the hood on the fender right next to the main filter, that way I can move my tank switchover valve all the way up front for short purge time.

---------Robert

ToddT · 01-10-2006, 08:44 AM

Where did you get the Duralift?

I noticed the Duralift pump on the Facet website and like how it has a washable filter as part of the filter. But, I haven't found any distributors carrying the Duralift. They stock the rest of the Facet line but not the Duralift.

Keep us posted on how the Duralift does for you.

Todd

fordnut74 · 01-10-2006, 09:58 AM

Todd- I actually don't have a pre pump filter. Only the Donaldson after. On some of the other kits I have used a 100micron washable prefilter from Aero. But like their pumps, their prefilter is extremely finicky. The edge of one had a very small knick in it, but I wasn't worried, it is an o-ring seal. Well it leaked from that spot. I would up having to use RTV to get it to seal.

RLDSL- That is some god info on the long range use of Mallory, Thanks. Guess I will have to keep a close eye on the brushes. Do you remember which model you were using? I have seen a few with nearly miniature brushes, and also they have changed the style and size of the brushes recently as well. The brushes in the one I use are similar in size to that of the Aero, not that it necessarily means much....

ToddT · 01-10-2006, 10:16 AM

Have you considered (for a pre-pump filter) a filter from an oil-fired heater or pressure washer? Purchase price is about $20 and replacement filter elements are only a couple of bucks. Check out General Filters and others. Most these days are 10 micron. They have some that are washable (more money) and some that have higher micron ratings, ideal for a pre-filter to protect the pump.

I've tried the smaller filters off the shelf at the auto parts store but they don't have the surface area.

Todd T

RLDSL · 01-10-2006, 10:19 AM

[ QUOTE ]
Where did you get the Duralift?

I noticed the Duralift pump on the Facet website and like how it has a washable filter as part of the filter. But, I haven't found any distributors carrying the Duralift. They stock the rest of the Facet line but not the Duralift.

Keep us posted on how the Duralift does for you.

Todd

[/ QUOTE ]

The only place I found that has them is Carrier Transcold dealers (carrier Transcold# 30-01108-01)it will have a #40259 on it which does not show on Facet website. I contacted them and it is an OEM # for the 40223.

This thing is nice, it also comes with a water tight GM-Packard quick conector , you can get the female side of the conector and pins at NAPA for about $3 for a clean install.

I should be giving that thins a workout soon.

The parts guy at the dealer said they've never sold one before, meaning no failures on warrenty units so far. thats a good sign.

---------Robert

scottefontay · 01-10-2006, 10:39 AM

Do you have a link for the dealer? It didn't pop up on google. Thanks.