Don't Bother With Mallory

[rrunner68]

So After my third Holley Electric fuel pump, I decided to go with a Mallory unit on a suggestion by a board member here. I got the 4110 unit, and it is nice. Plumbing required a 3/8 NPT to -6 to plumb it in. But the threads in the pump aren't actually for Pipe, and don't tighten to each other. Apparently, after 3 days of research, the pump actually uses a 3/8 flat cut O-ring fitting to properly seal. Guess who makes a fitting like that? Mallory does. Or at least they did up until recently, as it has been discontinued. So no one makes the plumbing required to set up this pump. I'm going to call Summit and see if I can just return it. Some of the guys at Mallory know of the proplem, and have told it upstairs to the bean counters, But I don't expect it to hapen any time soon. Too bad too, it seems liek a really good piece, and was a lot quieter than the Holley.

Anyone have any ideas for a good low-PSI fuel pump that is rated for continuious duty and won't **** out after 3000 miles?

[Tiger]

are you sure the size is 3/8" straight O-R, I'm asking because 3/8NPT is kinda big but 3/8" straight is pretty small (3/8NPT means that the tube is 3/8" not the thread).

All AN sizes are straight cut and if you measure the right size finding a O-R to AN male should be kinda easy.
have a look at:
http://en.wikipedia.org/wiki/AN_thread

http://aeromotiveinc.com/2010/01/an-vs-npt/

[67 455 Bird ragtop]

Catalog clearly states it's a 3/8 NPT. Might want to dbl check the fitting you initially tried to use. Also check to make sure the threads aren't damaged.

http://www.malloryperformance.com/pdf/110_140.pdf

[rrunner68]

2 Points I'd like to make.....

1. I know how to read and size plumbing and piping.
2. I know how to read instuctions. No where do the instructions state this fact, and you'll only find out about the Flat-Cut O-ring Fitting is through the Tech Line.

I'm not trying to be rude. But I understand what the instructions state, and the descriptions. Per Mallory tech line, its 3/8 NPT FLAT CUT O-RING.

All the major fitting makers make AN to AN With O-ring on one side, but a NPT O-Ring to AN just doesn't exist in anything close to this size.

[Vegas69]

My Mallory 140 has been sealed on the inlet side for 2 years/4000 miles, 10 plus races with pipe tape. Just don't put in on the first thread. There is a screen that would prevent it from jamming the gaerator. I couldn't seal it with teflon sealant and now I know why. Knock on wood, it's been a great pump.

[ZZ430]

Our 502 tow truck went through 3 of those damn things!

Garbage, and yes it's a bash!

[Bryce]

Dan,

I run a BG225. the falcon really likes. Its noisey but works. I run a return as to not dead head the pump and heat up the fuel.

I killed my holley super blue, it over heated cruizing on the freeway and died. Hence the reason behind the return line.

[ProdigyCustoms]

I have 1000s and 1000s of miles on Mallory 140 pumps. you just got a bad one.

[rrunner68]

Frank, How are you sealing them? My recent attempt was Teflon tape from the second thred back and High Tac Type 2, but then the adapter bottoms out on the flame arrester.

[mrn2obelvedere]

Have you tried McMaster? They have a pretty large selection of square profile o rings.

[ProdigyCustoms]

Mine always came with adapters installed. Are you sure your pump was not pilfered before you got it?

[Taman]

I run a Holley Volumax 160. Have 6 years and 15k miles on it.Still running strong. 2 Inputs, 1 outout and 1 return port.
https://static1.pt-content.com/images/pt/2010/06/MVC003F-1.jpg

[AMC Racer]

Is it ORB or BSPP? BSPP (British standard parallel pipe) has a straight thread and uses a sealing washer (washer with o-ring). ORB also has parallel threads, but there would be a chamfer in the end of the port for the o-ring to seat. Suggest take the pump to a local hydraulics shop and try to match it up, or measure the thread (diameter & pitch) to check size.
http://www.aeroquip.cc/aeroquip-fittings.aspx?gclid=CNX0xeu0haICFSQ65QodcnHYVg
http://www.aeroquip.cc/aeroquipracingadapters.aspx
http://www.aeroquip.cc/aeroquiphydraulicadapters.aspx

[rrunner68]

Sounds like Frank Might be on to something...I wonder if mine got rummaged through. Because Mine came out of the box with a female input and a female output, no fittings. But on a side note, a current Mallory Dealer I spoke to on the phone today said that he was no longer going to carry Mallory products because it has been an on-going issue with them. High Fire boxes coming without harnesses, and unobtainable fittings.....

[Vegas69]

Mine came with no fittings 2 years ago. The big 250 pump definitely comes with the fittings but I haven't seen the 110/140 pictured with them. Have you tried more wraps of teflon tape? Say 3-4 times around. I know it works.

[mrn2obelvedere]

if you give me the specs on that o-ring I can try to look something up for you. I would need ID and OD, and also thickness.

[Tiger]

2 Points I'd like to make.....

1. I know how to read and size plumbing and piping.
2. I know how to read instuctions. No where do the instructions state this fact, and you'll only find out about the Flat-Cut O-ring Fitting is through the Tech Line.

I'm not trying to be rude. But I understand what the instructions state, and the descriptions. Per Mallory tech line, its 3/8 NPT FLAT CUT O-RING.

All the major fitting makers make AN to AN With O-ring on one side, but a NPT O-Ring to AN just doesn't exist in anything close to this size.

I was just trying to help, not everyone is aware of the differences...

[John Wright]

I was just trying to help, not everyone is aware of the differences...
not trying to speak for him, but I think he knew you were just trying to help.:)

I understand the frustration he's going through with finding the unobtainable fittings and having to makeup some weird connection that will hold up and not look all junky with adapters and bushings to make it all work together.

[Bryce]

Dan

Come by my hardware store saturday morning. We have a lot of fittings. I will help you find something.

[Bad Bowtie]

Very interesting... I just recently (within a month) put a Mallory 140 on a project car and it didn't come with fittings. I had no trouble at all installing the 3/8 NPT to #6 AN http://www.summitracing.com/parts/SUM-220648/ on the inlet and outlet of my pump. Hope they don't start machining the pump bodies for special fittings now. I have been very happy with Mallory pumps over the years and have never had an issue with any of them.

[1994 Python]

I'm sure someone here can help you. If not I bought some straight pipe thread to AN fittings from these guys. THay have al lot is stock and can usually find anything you need

http://www.petersonfluidsys.com/index.html

Also I know they might or might not be the fittings you are looking for, but you can also try a John Deere dealership. A lot of the hydraulic fittings are pipe thread with an o-ring seal

[H2Ogbodies]

They must be straight pipe thread. The Aeromotive stuff I use/sell have the same type of fittings as you describe as do their regulators. They are straight pipe thread with a flat face and o-ring seals-nothing special about them to me. You need to obtain an Aeromotive catalog or Earls...somebody has to have them-I order extra catalogs from my vendors/suppliers all the time to stay current..I'll look them up myself tonight for you if you still haven't got it sorted out. Or call me at 515-979-4038...heck I bet I have some on the shelf at the shop on the wall even.

[TnBlkC230WZ]

I got 3/8 npt fittings to work in my Mallory pump. Maybe I was lucky.

[ProdigyCustoms]

This got me thinking. So I just slide under my street racer that has one since 1996 and I used regular pipe to AN fittings on it also.

[H2Ogbodies]

Okay, you need an Aeromotive #15606. It's called a flared cut-off AN fitting. For -06 you need this 15606, -08 is 15608, -10 is 15610 and -12 is 15612. It has an o-ring seal which you need to lubricate with oil very lightly so it doesn't tear when you tighten it. Mallory must have changed fitting outlet styles. Hope this helps you....I have the fittings if you need them. If they indeed are using this style now, the outlet should have a surrounding flat face for the o-ring to seal against.

[rrunner68]

Okay, you need an Aeromotive #15606. It's called a flared cut-off AN fitting. For -06 you need this 15606, -08 is 15608, -10 is 15610 and -12 is 15612. It has an o-ring seal which you need to lubricate with oil very lightly so it doesn't tear when you tighten it. Mallory must have changed fitting outlet styles. Hope this helps you....I have the fittings if you need them. If they indeed are using this style now, the outlet should have a surrounding flat face for the o-ring to seal against.

I'll give you a holler tomorrow.

[Mr Nick]

Here is my recent install of a 140 pump. Got the pump from private seller new on eBay, so I'm not sure how old it is. No flat surface on inlet or outlet side for an O-Ring.

Used 3/8 NPT from hardware store for inlet, and 3/8 NPT to -8 for outlet.

https://static1.pt-content.com/images/noimg.gif