balanced performance injectors, check. Now ...
balanced performance injectors, check. Now ...
05-19-2012, 01:44 AM
#2
They make AWESOME fuel pumps for the money. GSL 392 is the one I like and have used for years.
http://www.gsl392.com/
1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag
AX15 Jeep Trans swap in progress....
Captain America
05-19-2012, 01:44 AM #2Walbro*
They make AWESOME fuel pumps for the money. GSL 392 is the one I like and have used for years.
http://www.gsl392.com/
1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag
AX15 Jeep Trans swap in progress....
05-19-2012, 08:35 AM
#4
(05-19-2012, 01:44 AM)Captain America Walbro*
They make AWESOME fuel pumps for the money. GSL 392 is the one I like and have used for years.
http://www.gsl392.com/
not to hijack this thread, but why would adding a fuel pump help? I thought pushing more fuel makes the car smoke.
Purplecomputer
05-19-2012, 08:35 AM #4(05-19-2012, 01:44 AM)Captain America Walbro*
They make AWESOME fuel pumps for the money. GSL 392 is the one I like and have used for years.
http://www.gsl392.com/
not to hijack this thread, but why would adding a fuel pump help? I thought pushing more fuel makes the car smoke.
05-19-2012, 08:44 AM
#5
(05-19-2012, 08:35 AM)Purplecomputer not to hijack this thread, but why would adding a fuel pump help? I thought pushing more fuel makes the car smoke.
On pre 2004 tdi's, it helps responsiveness and reduces the strain on the IP - I assume it's the same with these cars? I'm curious what 1 of the vets says.
1991 350SDL, burning oil and slow
1991 500SL, yet another project car
1984 190D, swapped 3.6 m104 with a megasquirt
(05-19-2012, 08:35 AM)Purplecomputer not to hijack this thread, but why would adding a fuel pump help? I thought pushing more fuel makes the car smoke.
On pre 2004 tdi's, it helps responsiveness and reduces the strain on the IP - I assume it's the same with these cars? I'm curious what 1 of the vets says.
1991 350SDL, burning oil and slow
1991 500SL, yet another project car
1984 190D, swapped 3.6 m104 with a megasquirt
05-19-2012, 09:47 AM
#6
(05-19-2012, 08:44 AM)yatzee(05-19-2012, 08:35 AM)Purplecomputer not to hijack this thread, but why would adding a fuel pump help? I thought pushing more fuel makes the car smoke.
On pre 2004 tdi's, it helps responsiveness and reduces the strain on the IP - I assume it's the same with these cars? I'm curious what 1 of the vets says.
Me too, I would like to know if that would help on an old 240D
Purplecomputer
05-19-2012, 09:47 AM #6(05-19-2012, 08:44 AM)yatzee(05-19-2012, 08:35 AM)Purplecomputer not to hijack this thread, but why would adding a fuel pump help? I thought pushing more fuel makes the car smoke.
On pre 2004 tdi's, it helps responsiveness and reduces the strain on the IP - I assume it's the same with these cars? I'm curious what 1 of the vets says.
Me too, I would like to know if that would help on an old 240D
05-21-2012, 02:13 AM
#7
Plus the lifter pump is a horsepower parasite.
This post was last modified: 05-21-2012, 02:14 AM by Captain America.
1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag
AX15 Jeep Trans swap in progress....
Captain America
05-21-2012, 02:13 AM #7On my 300's I have always battled getting enough fuel to the IP. Seems as though any little restriction or negative pressure in the tank starves the engine. There are many threads where guys have only measured about 10 psi @ the IP inlet. With around 30 psi, the car(s) responded and ran much better. If it smoke, you just need more boost, thats all. More fuel will help a 616 engine too, just not as much as a 617a
Plus the lifter pump is a horsepower parasite.
1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag
AX15 Jeep Trans swap in progress....
05-21-2012, 03:21 PM
#8
if it don’t blow black...take it back.
1982 300TDT 4 Speed 196K Standard Beige “VEGEWGN”. 300GD FW. Walbro FRC-8 Fuel Pump. ZadaTech LCD Boost, EGT, & Fuel Pressure gauge. Non-EGR Exhaust and Intake Manifold. 3/2 Valves gone. Soon to have Elsbett WVO conversion
1981 300D 314K Midnight Blue “The Blue Car”, Lovecrap system, owned 25 years+
1985 300TD White 198K “Betty White” Pure beauty
The VEGEWGN
I’ve been considering bypassing my lift pump since I put in my Walbro pump a while ago. It seems to get starved of fuel the lower it gets in my tank, mostly at low RPM’s. Is that a bad idea? The FRC-8 I have is supposed to push at 30 PSI.
if it don’t blow black...take it back.
1982 300TDT 4 Speed 196K Standard Beige “VEGEWGN”. 300GD FW. Walbro FRC-8 Fuel Pump. ZadaTech LCD Boost, EGT, & Fuel Pressure gauge. Non-EGR Exhaust and Intake Manifold. 3/2 Valves gone. Soon to have Elsbett WVO conversion
1981 300D 314K Midnight Blue “The Blue Car”, Lovecrap system, owned 25 years+
1985 300TD White 198K “Betty White” Pure beauty
The VEGEWGN
05-21-2012, 03:30 PM
#9
This post was last modified: 05-21-2012, 03:34 PM by Captain America.
1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag
AX15 Jeep Trans swap in progress....
Captain America
05-21-2012, 03:30 PM #9What do you mean it gets starved of fuel? A fuel pump will only make pressure based on a restriction in the line. Most inline EFI pumps will make 100psi if that is what you restrict the line to. OK the FRC -8 will make 9-12 psi if you dead head the line (no return) and flow 28gph
1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag
AX15 Jeep Trans swap in progress....
05-23-2012, 02:57 AM
#10
-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
05-23-2012, 02:57 AM #10Why not adjust/replace the spring or whatever in the stock lift pump that gets worn out, to get the fuel pressure back up?
-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
05-24-2012, 08:47 PM
#11
I would have to wonder how much power the lift pump takes? It would seem to me not enough to worry about unless every single hp mattered.
that's what I did, replaced the fuel pump spring with one from a 617a(i have a 616), and the relief valve spring. With some stretching on the relief valve spring I am now running 28psi at cruising speed, about 25 at full throttle.
I would have to wonder how much power the lift pump takes? It would seem to me not enough to worry about unless every single hp mattered.
05-25-2012, 02:13 AM
#12
(05-24-2012, 08:47 PM)ronnie that's what I did, replaced the fuel pump spring with one from a 617a(i have a 616), and the relief valve spring. With some stretching on the relief valve spring I am now running 28psi at cruising speed, about 25 at full throttle.
I would have to wonder how much power the lift pump takes? It would seem to me not enough to worry about unless every single hp mattered.
Agreed. How much did you stretch the spring?
1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag
AX15 Jeep Trans swap in progress....
Captain America
05-25-2012, 02:13 AM #12(05-24-2012, 08:47 PM)ronnie that's what I did, replaced the fuel pump spring with one from a 617a(i have a 616), and the relief valve spring. With some stretching on the relief valve spring I am now running 28psi at cruising speed, about 25 at full throttle.
I would have to wonder how much power the lift pump takes? It would seem to me not enough to worry about unless every single hp mattered.
Agreed. How much did you stretch the spring?
1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag
AX15 Jeep Trans swap in progress....
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