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Username Post: Experience with ACDelco GF62P Professional Fuel Filter prior to regulator        (Topic#347790)
toro455 
"3rd Year" Silver Supporting Member
Posts: 370
toro455
Loc: Western NY
Reg: 06-15-02
10-21-17 05:46 AM - Post#2711578    

Hello,
I'm working on a long term project. I saw a an original factory solution I liked on a 1979 Eldorado and thought it would work well on my Impala. They used what looks exactly like "ACDelco GF62P Professional Fuel Filter" but I was wondering what the maximum working pressure is which it was designed for.

https://smile.amazon.com/gp/product/B000C9TU0U /ref...

More simply has anyone used this for a modern fuel injection system prior to the regulator? I would like to use it near the tank after the in-tank pump. I intend to use a Walbro 255LPH pump.

This is what it looks like (Amazon photo but rotated in the direction mounted on the Eldorado).

Thanks,
Scott

Attachment: GF62P_ACDelco_ProfessionalFilter.JPG (24.94 KB) 58 View(s)


ACDelco GF62P Professional Fuel Filter - Amazon photo rotated




 




toro455 
"3rd Year" Silver Supporting Member
Posts: 370
toro455
Loc: Western NY
Reg: 06-15-02
10-24-17 07:11 PM - Post#2712041    
    In response to toro455

I saw some similar style fuel / water filters for marine use which look like the canister might be a little more robust (one was similar to an oil filter).

I like the fact that the canister threads off like an oil filter as opposed to the inline style with entrance/exits out either end. Is anyone using anything similar which you would recommend?

Does anybody know the maximum output pressure of the Walbro 255LPH pumps?

Thanks,
Scott



 
Rick_L 
Honored Member
Posts: 27249
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
10-25-17 09:18 AM - Post#2712116    
    In response to toro455

You didn't say what the application was or your intentions here.

If the filter is on the high pressure side of the pump, then you can use a 10-20 micron filter, with a flow rate suitable for your pump, power level, and fuel used.

The "high pressure" 255LPH pumps are rated at up to 120 psi. Not sure on the others. Remember that system pressure will be controlled by the pressure regulator with this pump, not the pump itself. There is no pressure control in the pump itself. You have to have a regulator. Most OEM late model systems run at 58 psi.



 
toro455 
"3rd Year" Silver Supporting Member
Posts: 370
toro455
Loc: Western NY
Reg: 06-15-02
10-25-17 03:15 PM - Post#2712164    
    In response to Rick_L

Hi Rick,
I tried to describe where it would be used in relationship to the other components in the original post. I would like to place it prior to the regulator and near the tank so as you wrote it will be subject to the full output of the pump in that position. I realized that part but I was not aware of what that pressure could be and if there is a canister style which can withstand that pressure plus a safety factor of course.

Thank you for clarifying the rated pump pressure as well as the comment on the typical OEM system.

I was hoping to find somebody else who may have tried a similar style filter. I like that style just because they seem easy to service without dumping a lot of fuel like the barrel inline ones seem to.

Thanks,
Scott



 
4dr 57 
Valued Contributor
Posts: 4494
4dr 57
Loc: Texas Hill Country
Reg: 11-10-04
11-26-17 05:25 AM - Post#2715761    
    In response to toro455

It's meant to work with carburators 7-10# Max.
You might look at the older ford trucks for a good regulator/filter unit. I remember back in old days here, guys transplanting Ford fuel injection gas tanks into their cars for LT1 engines.

I believe the only way you would want to incorporate your aforementioned filter on a sfi system is if you had an external pump, placing the filter on the pickup side of the system just off the tank.

Would you know what the micron rating fo rthis filtewr is?




 
toro455 
"3rd Year" Silver Supporting Member
Posts: 370
toro455
Loc: Western NY
Reg: 06-15-02
12-17-17 07:20 AM - Post#2718250    
    In response to 4dr 57

Hi 4Dr 57,
It takes one of the corrugated paper elements. I saw somebody crossed the replacement element with a Wix part and thought it was a 10 micron filter element.

The weak points of this design seem to be the cup and possibly the seal. AC Delco seems poor at publishing specs. There are AC receiver-dryers attached to condensers which are only slightly smaller diameter. The threads and seal are different but the burst pressure of the receiver-dryer is over 1300 psig. I think the pressure of this fuel filter design could be increased substantially if the cup was remade. If the cup was designed to have a true o-ring grove in place of the oil filter type seal I suspect it could work. I don't know if I want to go through that effort to find out so I may use a barrel style because I want the in-tank fuel pump.

Scott



 
Rick_L 
Honored Member
Posts: 27249
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
12-17-17 04:16 PM - Post#2718295    
    In response to toro455

I don't know what pressure you need but a good setup is a Wix 33737 which is for a 99-04 Corvette. 58 psi. Cost is $35-40, available at any auto supply. The only downside is it uses the GM quick disconnects, but you can get AN to quick disconnect fittings to use with it. Speedway sells a package with filter and fittings.



 
toro455 
"3rd Year" Silver Supporting Member
Posts: 370
toro455
Loc: Western NY
Reg: 06-15-02
12-17-17 08:09 PM - Post#2718316    
    In response to Rick_L

The fuel pump I'm using is a Walbro GSS342. It's listed as high pressure pump. Their graph shows it up as high as 130psig but that's the point where the flow is down to zero so I don't think that point means much unless the line was fully blocked. Here's the link to the graph (scroll down about half way):
http://walbrofuelpumps.com/walbro-gss-fuel-pumps

For the filter I'm now thinking of using what I used on my chevelle by System 1 (the Chevelle is not EFI however and has just a mechanical fuel pump but this style should be capable of the high pressure; I need to read more). It's 6" long with AN fittings on both ends. Here's an example PN 201-203408 and Summit Racing link:
https://www.summitracing.com/parts/sof-201-203408/ ...




 




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