DANGEROUS Leaking Pro Products Fuel Filter

The new gas blends will attack our old rubber products. Viton rubber o-rings and gaskets will hold up. Fumes will also get through the old rubber hoses.

 

My thoughts too, I was going to check with the hydraulic supply place for something that will fit it. I also was looking through the Wix filter book and saw that they supply o-rings and seals too but I didn't have the unit with me to measure it. I'll get some measurements posted here later to help locate them. I would like to keep using this filter due to its compact size and appearance but it has to stop leaking first. I checked it again last night and it seemed dry this time.

 

Get the inside and outside dimensions and the groove depth then go to mcmaster carr's on line site and look for one or shoot the info to me and i have a catalog right here on my bench and ill look it up for you.
Dave

 

No, this is their site:
http://www.professional-products.com/fuelFilters_street.php

Contact info...

[FONT=Verdana, Arial, Helvetica, sans-serif][SIZE=-1]Professional Products
The Precision Line of High Performance and Racing Products
12705 South Van Ness Avenue
Hawthorne, CA 90250[/SIZE][/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif][SIZE=-1]Ph: 323-779-2020
Fax: 323-754-9060[/SIZE][/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif][SIZE=-1][email protected][/SIZE][/FONT]



I think they would like to see this post, so I'm linking them to it.

 

The square o-ring seal dimensions are:

Outside diameter: 2.575
Inside diameter: 2.275
Seal Thickness: .150
Seal Width: .150

I checked McMaster-Carr and found some square o-rings in Buna-N (oil resistant) rubber that were close but probably not close enough. They only come in packages of 25 so that doesn't help either.

Thirdyfivepickup - Thanks for the contact info. I don't know why I ended up getting the wrong site when I searched. It must have been the gas fumes. I'll contact them Monday alert them of the problem and ask for some new seals to work with. I have heard that the Chinese don't make a good fuel resistant rubber so they may have to have them sourced from here in the USA. It would be a shame to burn someones house, garage and car down because of a 50 cent o-ring.

 

Here's an alternative to the cannister-style filters.

Big high-flow inline filters, made in the USA by one of the 'little guys'. The larger ones have 1/2" NPT ports.

I run one of their 550HP mechanical fuel pumps as well as one of the large prefilters. Great customer service too.

http://www.robbmcperformance.com/products/filters.html

 

Well here we are 2016 and this thread was started in 2008, I'll bet there's been a lot of disappointed hot rodders with gas fumes in the air and puddles on the floor. Hope no ones blown up anything from this leaky canister! I bought mine from Summit last week to replace the one that was on a new acquisition. Right out of the box it leaked, dam. So back off the car it came. I disassembled it and I too noticed that the filter canisters square "O" ring so to speak did not set very well in the cast upper housing. After a little fanagleing I was able to seat it better. Back on the car it went. Well, it's not leaking as badly but this things are not suppose to leak at all. Certainly I can't heat my garage until I fix this. I'll be calling Summit for a refund and looking into that fram assembly.

 

My discontinued Russell, no leaks

 

WIX fuel filter. Mount from Princess Auto with two screw bosses on top of housing for mounting. 1/2" NPT inlet and outlet.



Mounting housing probably available from places like Tractor Supply.

Mounter in frame with 3/8 steel line.

Canuck

 

Resurecting this thread as I'm looking into fuel filters to buy. The GF62C is listed as just the cartridge on Rockauto The GF62P has an alluminioum mount cast as part of the inlet, The GF62, has no mount, just screw holes in the top. They all say on Rockauto that they are for fuel injection.

 

I have used this CarQuest filter in the past 86123 it is full size spin on filter.

 

It was discontinued then brought back with new numbers. They were originally used on GM big trucks back in the 60s and 70s. They work fine with carburated engines. Socal sold them for ages. and we put them on every car we built at the hot rod shop.


Here is one with the vertical mount. https://www.oreillyauto.com/detail/...6bf814fc80d2/acdelco-fuel-filter/gf62/2492522

And my preferred. can be mounted upright or hanging.

https://www.oreillyauto.com/detail/...bf814fc80d2/acdelco-fuel-filter/gf62p/2492526

 

I started this thread on the junk Pro Products leaker on my '32 Pickup and I finally found some nice aluminum mounted spin-on fuel filters at my local surplus store so I bought all they had for my future projects. I should have come back and posted this when I found them but I was moving and forgot about it. I still have some extras if you would want one for $35 shipped. Several different spin-on filter elements fit it, like a Fram P6503, or Wix 33195 Here's some pics of it with dimensions.

 

Tman, Rockauto has both those part numbers available for almost half the price of Oreilly's.

 

I just grabbed the first URLs and images that came up in a search

Jerry, I like that one as well!

 

Thanks for coming back Vintagehotrods and Tman.
I’m hoping to run 3/8 line, the acdelco filter appears to be 1/4npt, is that big enough?
Also been reading that you shouldn’t run a paper filter before the pump, anyone had any experience of that?
Vintage hot rods, the Fram part number appears to be a secondary diesel filter, and the wix is a 10 micron filter. I don’t know enough about all this, is a diesel filter ok for petrol? Is 10 micron enough? What size is the in and out on your mount?
Thanks

 

I think 10 microns is a standard filtration for many fuel filters. I did a quick search of Summit and came up with over a thousand 10 micron fuel filters.

https://www.summitracing.com/search?SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=fuel filter 10 micron&N=part-type:fuel-filters

The filter base inlet/outlet is 1/4" pipe with a 1/4" flare adapter.

The Fram filter application lists both gasoline and diesel applications. One of applications is this: FORD L800 1980-1985 V8 7.0L 429cid; GAS

Fuel line size is usually 5/16" and a 80 GPH Small Block Chevy mechanical fuel pump has an 1/4" NPT inlet and outlet. The 1/4" NPT fittings measure as follows:
.540" O.D. thread
.364" O.D. port

Fuel line tubing size:
5/16" = .3125" I.D.
3/8" = .375" I.D.

 

Are you talking carburated or EFI?

 

Thanks for coming back to me. I appreciate you taking the time to look on the filters. I asked about the Micron data because I've seen some that are 100, and have 'heard' that the new gas has alot more rubbish in it that needs filtering out, and probably isn't gonna get any better.
The reason for 3/8 is that my engine, a 348 tripower, (carbs) would have been in an Iimpala, and Chevy ran 3/8 from tank to engine bay, so I figured I should do the same.

 

I run 3/8" for all of my fuel lines

 

I always have used a fuel pump with 1/4" NPT inlet and outlets on my SBC powered cars with a 3/8" fuel line too. I also don't drive them WOT flat out either! I found this interesting bit of information too.

A 1962 Chevrolet Bel Air 327 CI/300 HP has a 625 CFM Carter AFB 4 barrel carburetor and a 3/8" fuel line from tank to pump, yet the fuel pump for that engine has 1/4" NPT inlet and outlets. Curiously, a 1962-63 Chevrolet with 409 CI/409 HP engine with two AFB carburetors has 1250 CFM at WOT and has the same fuel delivery system.

Go figure!

 

Pipe sizes & hose / line sizes are nominal numbers , like a 2x4 is 1 1/2x3 . measure the I d of the fuel line /hose & the I D of a 1/4 NP fitting , then it will make more sense .
Check out how many gph it takes to feed 1000 HP.....

 

If you want to get really technical, read this!

Fuel Line Sizing — What Size Do I Need?

Lots of strange information out on the internet regarding fuel line sizing and it seems like most of the time people run way more diameter fuel line than they need. This is an interesting article that I came across that seems to be pretty relevant.

Quick reference for AN to Inch line conversion:
-6AN = 3/8″
-8AN = 1/2″
-10AN = 5/8″
-12AN = 3/4″

Fuel Line Sizing

A question that is often asked of me when dealing with high horsepower applications is: “My fuel line is nominal 3/8” id. Don’t I need to increase the size of the fuel line to at least ½” id (from a #6 to a #8 or #10) to support say 600 HP”?

The answer is “NO”! A 3/8”id fuel line can easily support 600 HP given sufficient “pump head”! Given a big enough pump a 3/8” steel line could support 1000 HP.

The simple way to know is to install an electronic fuel pressure guage. If the pressure falls as the engine RPM’s go up you need more pump head. More pump head can be achieved with a bigger pump, higher pump voltage and/or increasing the line size. But before you do check out the following (and remember a dirty fuel filter is often the culprit of falling fuel pressures!).

The reason most people do not understand why is because “back in the day” when carburetors ruled and everybody ran a Holly electric fuel pump running at 14 psi then into a rail mounted PRV (pressure regulator) set to 6 psi the “pump head” was insufficient to overcome the pressure drop thru the 3/8” line: particularly if the pump was at the front of the vehicle.

Let’s see why today this is what I call a “wives’ tale”. For this example I will use gasoline. If we use alcohol we need about double the flow or with E85 we need to increase the flow numbers by around 30 % .

At WOT (Wide Open Throttle) a BSFC (Brake Specific Fuel Consumption) of ½ pound of fuel per horsepower is quite safe: resulting in A/F ratios of 11:1 or richer. Remember that maximum HP occurs at an A/F ratio of 13:1. We won’t go into why one chooses such rich air fuel ratios; suffice to say that using a BSFC of .5 is generous. Since gasoline has a weight of 5.994 lbs/gallon (@ a SG of .7201 typical) then in round numbers we need 1 gallon of gasoline per 12 HP (5.994/.5). The reason I am making all these conversions for you is because typical fuel pump measurements are made in volume versus mass although mass is more accurate.

OK stay with me now as we calculate how much gasoline fuel we need to support say 1000 HP. 1000 divided by 12 = 83.3 Gallons Per Hour or 315 Liters Per Hour.

Now we are going to calculate the pressure drop thru a 3/8” steel line for a typical vehicle at a flow of 83.3 gph or 1000 HP. Most of you know that the pressure drop thru a straight pipe is less than an elbow or a 45 (same principle as your air ducting from your blower thru the piping and on into the engine). Lets assume we have about 10 feet of 3/8” fuel line. Let’s double that to say 20 feet to take care of the bends in the steel pipe from the gasoline tank up to the engine fuel rail. Ingersoll-Rand publishes an engineers’ handbook called “Cameron Hydraulic Data”. In there they list the “Friction Of Water” thru various types of pipe. Using the pressure drop thru a new steel pipe of .364” id at 1.388 gpm (83.3 gph) we get a head loss of 35 feet per 100 feet of pipe with water as the medium. 2.31 feet of water = 1 psi therefore 35/2.31 = 15 psi per 100 feet. If I use 20 feet of steel pipe then that is 1/5 of 15 or 3 psi using water (gasoline is less viscous and flows more freely). A Fuelab Model 41401 can deliver 90 gph @ 70 psig. Can I tolerate a 3 psig drop if I need the fuel delivered at 60 psig? Yes. Will increasing the line size to ½” help? Yes the pressure drop thru a ½” line is a nominal 5 feet versus 35 feet for the 3/8” id fuel line. The ½” line will result in a ½ pound drop versus the 3 pound drop for the 3/8” line at the stated flow of 83.3 gph (enough to support 1000 HP at a BSFC of .5). The pressure drop at 1320 HP thru a 3/8” steel line might be around 5 psi.

The key to sufficient fuel supply is pumping power. As another example let’s look at a flow of 1 gallon per minute at a required fuel rail pressure of 70 psig. That is enough fuel to support 720 HP. The pressure drop thru a 3/8”id line at 60 GPH is less than 1 psig! Switching to a ½” id line would result in a pressure of about 1/10 of the 3/8” line. However, given sufficient pumping power, a one (1) pound drop versus a tenth (1/10) pound drop is insignificant. At 500 HP the pressure drop is even less.

VISCOSITY SG plays no role in friction loss. The key factors are viscosity and surface tension of the liquid being pumped. Gasoline has lower viscosity and much lower surface tension than water, which is why it flows more easily thru a pipe. Consider that most greases have a lower SG (specific gravity) than water but much higher viscosity. Which do you think flows more easily thru a pipe? SG becomes a factor if there is vertical lift of the liquid involved or very long pipe runs (which represent a large physical mass of liquid.) SG simply determines the weight of the liquid per unit volume and it boils down to more weight requires more power (HP) to move it. Friction loss is the mechanical resistance exercised by the pipe wall on the liquid. Low surface tension and/or low viscosity liquids overcome that resistance more easily. Here is a little experiment you can try. Water has relatively high surface tension. Alcohol greatly reduces that tension. Place a small drop of water on a counter top. (The counter top is analogous to the pipe wall) The water lies on the counter as a small bubble. Don’t touch the water but let a very small drop of alcohol drip into the water. Watch the water immediately spread out on the counter top. The alcohol broke down the surface tension and the water molecules were free to move. If you put a drop of gasoline or alcohol (low surface tension liquids) on the counter top you see they immediately spread out. BTW, this is an area of misunderstanding with people.

Sourced from http://www.blowerworks.biz/docs/fuel-delivery-basics/fuel-line-sizing/

 

Wowza! So drop on 5/16 from tank to carbs would be even more.. based in your holley pump analogy, are you better of having a pump with more psi and regulating it down at the carbs? I've brought a Carter p4070 pump, 1/4 fittings, advertised as running between 4-8 psi, My rochetsers apparently like 4, but with the pump at the back, and carbs at the front, will the psi drop too much ?

You mentioned that you run 3/8 with 1/4 pump fittings, but is that with the stock mechanical pump, so your pump is at the front, where as mine will be at the back, by the tank.
I assumed the pump self regulates to what is wanted by the engine, but there's nothing in any of the blurb from Carter that says that's the case, although it's advertised as no pressure regulator needed.

AND, any one know anything about paper filters not being good between the tank and filter? I'm looking at buying a ACdelco gf62, but all the filters appear to be paper....

Just to add to it all, my stock tank has 3/8 od internal hardline, but the stock fuel line coming out of it is 1/4 (40 ford, so had a flathead originally)

 

Anyone ever use one of these? Looks like a simple solution and compact too. AC Delco GF62P.

 

Um, read the thread maybe?

 

Um, I guess I was seeing the Davco filter that was a canister/oil filter type as compared to this one with a threaded can and cartridge filter. Plus the one shown had another port on the bracket. Read back thru and saw the reference to the p/n I listed. Sorry for any inconvenience.


Sent from my iPhone using H.A.M.B.

 

I see a couple people complain since 2008 ? Doesn't appear to be a huge problem . Mines been in use 20 years without trouble ...

 

The issue I saw is the Professional Products ones were of lesser quality than the original Fram they copied. Servicable but not as good. GV is still running the one I had to fix on the T after 15 years so if you can get em to seal you will be ok.

 

A similar one is just in front of the Axle inside the left rear tire on 76/79 or so Cadillac Sevilles with FI. I've got two of them stashed that were on 76 Sevilles I had, one a parts car and one my wife killed with rough driving. Take the same filter element that the 472/500 uses
Probably useless info as you don't see many of them in Pick a part.