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Re: Hilborn EFI 512 Charger [Re: CSK] #2848291
11/18/20 06:35 PM
11/18/20 06:35 PM
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Bend,OR USA
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Every drag motor I've tuned use the most fuel in high gear, especially after the1000 ft. clocks.
hopefully you didn't hurt any parts luck


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2848303
11/18/20 07:01 PM
11/18/20 07:01 PM
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Pattison Texas
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Originally Posted by fast68plymouth
I don’t run EFI, but it would seem to me that if there was enough of a restriction in the filter to cause the pressure to drop to 8 psi, the pressure would start to fall off pretty much right after going to WOT.
Is that how it looks on the data log?

Quote
Its a 115 GPH @ 55 psi so 430ish LPH


700hp at a bsfc of .50 is about 58GPH(350LPH).


so I should be good if there is no restrictions in the lines or filter. I think the volume @ pressure test that you had me do last time when it was carbed is the only way to figure this thing out.

Last edited by csk; 11/18/20 07:10 PM.

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Hilborn EFI 512 Charger [Re: CSK] #2848489
11/19/20 08:28 AM
11/19/20 08:28 AM
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Tulsa OK
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I learned the hard way with the 10 micron filters for EFI, they clog easier than the old 40 micron morroso I used to run with a carb. I run a Robb MC filter with a sintered brass element. I have mine setup to where I can turn it around and back flush it if it gives me trouble. That has gotten me through a test and tune before.

The fuel filter is an item I need to make easier to service. I like this one, but it looks so nice I feel it needs to be visible, $300 it tough to swallow for a fuel filter though.

http://injectordynamics.com/id-f750-fuel-filter/


Last edited by Bad340fish; 11/19/20 08:31 AM.

68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Hilborn EFI 512 Charger [Re: Bad340fish] #2848543
11/19/20 10:43 AM
11/19/20 10:43 AM
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Originally Posted by Bad340fish
I learned the hard way with the 10 micron filters for EFI, they clog easier than the old 40 micron morroso I used to run with a carb. I run a Robb MC filter with a sintered brass element. I have mine setup to where I can turn it around and back flush it if it gives me trouble. That has gotten me through a test and tune before.

The fuel filter is an item I need to make easier to service. I like this one, but it looks so nice I feel it needs to be visible, $300 it tough to swallow for a fuel filter though.

http://injectordynamics.com/id-f750-fuel-filter/



I have already ordered this one from earls,, I will save the link you posted if this one gives me trouble, Thank you guys !!!

Screenshot (97).png

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Hilborn EFI 512 Charger [Re: CSK] #2848555
11/19/20 11:04 AM
11/19/20 11:04 AM
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So. Burlington, Vt.
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Quote
I think the volume @ pressure test that you had me do last time when it was carbed is the only way to figure this thing out.


I agree.
And I think you should do it before you change any parts.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2848558
11/19/20 11:08 AM
11/19/20 11:08 AM
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Originally Posted by fast68plymouth
Quote
I think the volume @ pressure test that you had me do last time when it was carbed is the only way to figure this thing out.


I agree.
And I think you should do it before you change any parts.


Yes will do the test as the car is now & then after, will post the results


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Hilborn EFI 512 Charger [Re: CSK] #2848668
11/19/20 02:38 PM
11/19/20 02:38 PM
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north of coder
moparx Offline
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a question i have wanted to ask, but haven't yet, what would happen if i installed a late model FI can filter [such as a minivan uses in the supply line after the tank] in a carb'd application ?
i can't state an exact application, but with the master catalogs i have, i could likely come up with an application that has a 3/8" [or metric equivalent] in and out.
this would be for an intank pump [aeromotive 340lph] feeding a tick over 500hp.
the reasoning behind this would be "any parts store" availability, along with an economically priced item.
thoughts on this ? [TIA ! bow]
beer

Re: Hilborn EFI 512 Charger [Re: moparx] #2848702
11/19/20 03:25 PM
11/19/20 03:25 PM
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Pattison Texas
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Originally Posted by moparx
a question i have wanted to ask, but haven't yet, what would happen if i installed a late model FI can filter [such as a minivan uses in the supply line after the tank] in a carb'd application ?
i can't state an exact application, but with the master catalogs i have, i could likely come up with an application that has a 3/8" [or metric equivalent] in and out.
this would be for an intank pump [aeromotive 340lph] feeding a tick over 500hp.
the reasoning behind this would be "any parts store" availability, along with an economically priced item.
thoughts on this ? [TIA ! bow]
beer


Thats what I have now , I had this also when it had a Carb, I forget the application for the filter, but it is the same one That Tanks Inc sells as an inline

Screenshot (98).png

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Hilborn EFI 512 Charger [Re: CSK] #2849581
11/21/20 02:38 PM
11/21/20 02:38 PM
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north of coder
moparx Offline
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thanks Charlie ! up that will save a couple of bucks for docs, medicine, and hospital visits.
i'll just have to hit the books to find something. there has been an old fram "chrome can" filter [new in the box] sitting on the shelf for years, but i don't like those things. never really have. it came with a bunch of other swap meet "stuff" probably 30 or more years ago. i just haven't gotten around to tossing it yet.
beer

Re: Hilborn EFI 512 Charger [Re: CSK] #2849639
11/21/20 04:49 PM
11/21/20 04:49 PM
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Mt Morris Michigan
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I like it. That's cool. Looks good with the satin black too.

Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2850429
11/23/20 12:59 PM
11/23/20 12:59 PM
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Originally Posted by fast68plymouth
Quote
I think the volume @ pressure test that you had me do last time when it was carbed is the only way to figure this thing out.


I agree.
And I think you should do it before you change any parts.


Ok guys here is what I found, correct my math if its off, My Car is named "BRAIN DAMAGE " for a reason, LOL, This test was @ 12.5 volts, running voltage is 14 volts so the pump output is more when the car is running, all that said, with the set up before any mods done it took 40 seconds @ 47 psi to flow 1 Gallon so that is 90 GPH ,,, with the new HIGH FLOW filter it took 37 seconds per gallon so, 97GPH, thats plenty of fuel for my low HP engine, BUT here is what I found, to do the test I unplug the fuel pump relay & bypass it & LOW & BEHOLD I found melted terminals on the electrical plug, so I ordered a 65 amp continuous Duty solenoid that will be mounted in the trunk right off the battery triggered by the old Fuel pump voltage supply wire, that will reduce resistance in the pump circuit because everything is right there ie Battery & in tank pump, Thanks for all the help smile


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Hilborn EFI 512 Charger [Re: CSK] #2850433
11/23/20 01:08 PM
11/23/20 01:08 PM
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So. Burlington, Vt.
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Does the system normally operate at 47psi?
In other words....... that’s the system pressure while you’re driving, and just as importantly...... tuning?

I’m sure the melted terminal aren’t a sign that everything was happy.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2850439
11/23/20 01:18 PM
11/23/20 01:18 PM
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Originally Posted by fast68plymouth
Does the system normally operate at 47psi?
In other words....... that’s the system pressure while you’re driving, and just as importantly...... tuning?

I’m sure the melted terminal aren’t a sign that everything was happy.


I run it @ 55 psi for everything, the difference in volume from 47 psi & 55 was about 1 PPH difference I checked it at 40,47, 55 psi just to see the difference in volume.


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Hilborn EFI 512 Charger [Re: CSK] #2850461
11/23/20 01:47 PM
11/23/20 01:47 PM
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Nice up

Of course...... even the test with the old filter in place showed fuel flow well above what is required for your power level(90GPH/540PPH)........ so I wonder if the wiring couldn’t keep up with the draw.

I don’t know what pump you’re running, but the higher PPH Walbros mention they have high current draw at high pressure/high flow....... so the wiring needs to be up to the task.

Do you have the regulator before or after the fuel rail?


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2850470
11/23/20 01:57 PM
11/23/20 01:57 PM
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Originally Posted by fast68plymouth
Nice up

Of course...... even the test with the old filter in place showed fuel flow well above what is required for your power level(90GPH/540PPH)........ so I wonder if the wiring couldn’t keep up with the draw.

I don’t know what pump you’re running, but the higher PPH Walbros mention they have high current draw at high pressure/high flow....... so the wiring needs to be up to the task.

Do you have the regulator before or after the fuel rail?


Here is the pump & yes it draws a lot of amps,also the higher the pressure the more amps draw, The return regulator is after the fuel rails
FUELPUMPLINK

Last edited by csk; 11/23/20 01:59 PM.

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Hilborn EFI 512 Charger [Re: CSK] #2850496
11/23/20 02:32 PM
11/23/20 02:32 PM
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" I unplug the fuel pump relay & bypass it & LOW & BEHOLD I found melted terminals on the electrical plug"


what gauge wire are you using, and was the terminal connection to the wire a good one ?
was the relay a lower amp/parts store relay that may have been part of the melted terminals ?
beer

Re: Hilborn EFI 512 Charger [Re: moparx] #2850594
11/23/20 04:50 PM
11/23/20 04:50 PM
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Originally Posted by moparx
" I unplug the fuel pump relay & bypass it & LOW & BEHOLD I found melted terminals on the electrical plug"


what gauge wire are you using, and was the terminal connection to the wire a good one ?
was the relay a lower amp/parts store relay that may have been part of the melted terminals ?
beer


I used Bosch 30 amp relay & the pigtail is 12G connected to a 10g to go all the way to the tank. the plastic wire holder melted a little around the connectors,


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Hilborn EFI 512 Charger [Re: CSK] #2850611
11/23/20 05:13 PM
11/23/20 05:13 PM
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Tulsa OK
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These little relay boards from leash are great for stuff like this. They are priced really well also, he makes quality stuff for fair pricing.

https://leashelectronics.com/products/single-70amp-relay-module


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Hilborn EFI 512 Charger [Re: Bad340fish] #2850616
11/23/20 05:44 PM
11/23/20 05:44 PM
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Wichita
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Originally Posted by Bad340fish
These little relay boards from leash are great for stuff like this. They are priced really well also, he makes quality stuff for fair pricing.

https://leashelectronics.com/products/single-70amp-relay-module


Love the Leash stuff!

We use their single stage nitrous board. I makes wiring so easy!


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Hilborn EFI 512 Charger [Re: Bad340fish] #2850704
11/23/20 08:49 PM
11/23/20 08:49 PM
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Pattison Texas
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Originally Posted by Bad340fish
These little relay boards from leash are great for stuff like this. They are priced really well also, he makes quality stuff for fair pricing.

https://leashelectronics.com/products/single-70amp-relay-module



I like that, Thanks, that will work for a lot of other things I have to do on the car


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

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