08-24-2018, 04:17 PM | #1 |
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Fuel filter
I'd like to eliminate the filter inline on top of eng and install one between the tank and mech fuel pump, is that practical? I had a friend who had an engine fire and want to not have that happen to me. (76 gmc c10 long box 2wd,sbc.350 trans.)
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08-24-2018, 04:53 PM | #2 |
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Re: Fuel filter
With an engine fire the filter on top of engine may or may not be an issue unless it leaks. You might be able to install filter in rubber hose from tank sending unit to metal line. May have to drop tank to do that. Or you may have space from metal line to pump. Mine has rubber hose there and appears there is room for filter.
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1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet Mopar by Birth Chevy by Choice |
08-24-2018, 05:41 PM | #3 |
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Re: Fuel filter
I need to replace the metal lines from tank to fuel pump anyway, maybe install a filter with threaded ends? Any opinions on filter sizes,restriction specs.?
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08-24-2018, 06:32 PM | #4 |
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Re: Fuel filter
Why not replace the filter in the carb?
Which carb? |
08-24-2018, 08:05 PM | #5 |
OutOfMyMind & I'llNeverKnowWhy
Join Date: Apr 2004
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Re: Fuel filter
With mechanical pumps, its better to have the filter after the pump.
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-Justin-Out of my mind and I'll never know why 1976 Chevrolet Silverado C10 350 4bbl / TH350 Big10 longbed 1986 Pontiac Firebird T-Top 5.0L TPI 700R4 WS6 1992 Pontiac Firebird T-Top 5.0L TBI 700R4 My cardomain page I don't like to save, it's more fun to spend!! |
08-24-2018, 08:28 PM | #6 |
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Re: Fuel filter
The best place I found is down in front of the mechanical pumps the in line side going to the pump by the frame near the cross frame that the proportioning valve bolts to. I use a Fram G2 (plastic clear) stock 5/16" or the Fram G3 (plastic clear) 3/8" If you up graded your line. This way you can see the fuel it will not melt down there because it's get air flow the rad and the fan and when your driving
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1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change. |
08-24-2018, 11:03 PM | #7 |
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Re: Fuel filter
Any recommendations as to size,restriction in the frame before the mech pump?
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08-25-2018, 11:00 AM | #8 |
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Location: Oklahoma City, OK
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Re: Fuel filter
Since you are replacing the metal lines from tank to pump, might look at getting one of the in line filters for a fuel injection system.
On my 75, I use a Fram G3 type between the frame line and fuel pump. |
08-25-2018, 06:54 PM | #9 | |
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Re: Fuel filter
Quote:
but i wouldnt be to worried of a gas fire under the hood IF all the correct stuff was used and nothing was cheep and sketchy . this is were most fires start is cutting corners on parts and hose not rated for specific fuel kinds or psi ranges .
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77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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08-27-2018, 02:30 PM | #10 |
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Location: Ottawa, Ontario, Canada
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Re: Fuel filter
I run the G3 on the Pontiac for year drove all the way down the GA raced there 11 rounds. 10min run hit the highway speeds ( it was hot that year.) 170 temps highway 200 temp drove to NY race track long island race there, headed north east Canada 1993 back never had any trouble with the G3 fuel filter car. Or the Truck with the 454 fuel filter G2 mount in the same place. The 454 used to heat soak up to 230 temp. I fried a few eggs on the valve cover to show the heat in BBC. back in the day. But never had a fuel filter problems other then the dirt that got stopped by the filter.
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1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change. |
08-27-2018, 03:01 PM | #11 |
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Join Date: Oct 2015
Location: Ottawa, Ontario, Canada
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Re: Fuel filter
Just a side not fuel filter should not be any where top 3/4 of the motor that where the heat the highest ( heat rises). Some problems the fuel get hot, in the filter can lead to vapor lock. Melt the plastic filter, boil the gas, the cheap glass fuel filter will break once getting to hot one too many times.
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1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change. |
09-03-2018, 02:40 PM | #12 |
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Location: SW Ontario
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Re: Fuel filter
WIX 33033. 3/8" inlet & outlet, all metal construction.
Alex. |
09-03-2018, 05:48 PM | #13 |
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Location: South Milwaukee
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Re: Fuel filter
any with threaded inlet/outlet?
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09-03-2018, 10:46 PM | #14 |
OutOfMyMind & I'llNeverKnowWhy
Join Date: Apr 2004
Location: Another world, some other time
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Re: Fuel filter
ACDELCO GF652. M16 o-ring connection.
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-Justin-Out of my mind and I'll never know why 1976 Chevrolet Silverado C10 350 4bbl / TH350 Big10 longbed 1986 Pontiac Firebird T-Top 5.0L TPI 700R4 WS6 1992 Pontiac Firebird T-Top 5.0L TBI 700R4 My cardomain page I don't like to save, it's more fun to spend!! |
09-03-2018, 11:04 PM | #15 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
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Re: Fuel filter
i run two filters one before the fuel pump and one right before the carb, extra insurance, I have a Holley 4160, I believe cleaning the fuel right before it enters the carb is the best spot to do it as it can pick up debris in the fuel pump or in the hard line leading to the carb
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09-05-2018, 06:35 AM | #16 |
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Re: Fuel filter
Mechanical fuel pumps do not like restrictions before them, they push better than they suck. The opuropse of the filter is to protect the carb / injectors, including from debris of a pump failure. It should always be after the pump. It's ok to protect the pump with a low restriction high flow filter, although this is pretty much a waste on most mechanical pumps. They will happliy pump fine sand with no real issues.
As an example, the big failure on 6.2 diesel electric lift pumps is large tank debris ingested by the pump, either just small enough to pass the sock or due to sock failure. The cure is a 60 micron filter right before the pump, and retaining the sub-20 micron filter to protect the expensive injection pump. That way the lift pump is protected but doesn't have to suck fuel very far, and the injection pump and injectors are protected with little pressure drop.
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1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors |
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