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New/Returning Member

Postby brad5557 » Wed Apr 13, 2016 12:53 am

Hello all.

My name is Brad Morgan and I live in Montana. I was a member here for a while a few years back. I have a '57 Chevy Sedan Delivery with a Hilborn injected 427. I have recently fired the motor and got it running, but still have tons to learn about how to make this thing run like it should. I know very little about fuel injection, but you gotta start somewhere, right? I plan to buy the Fuel Injection Basics book and learn some more from reading all the great posts here. I'm looking forward to hopefully getting some more great advice from the members here as well.

Thanks,
Brad
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Re: New/Returning Member

Postby uglytruck » Wed Apr 13, 2016 1:01 am

Welcome back Brad! You won't go wrong with Jim's book. Have you had your pump flowed?
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Re: New/Returning Member

Postby brad5557 » Thu Apr 14, 2016 12:03 am

Hi Clay.

Thanks for the reply. I have not had my pump flowed. My hole system came from Hilborn and the paperwork says it has been flow tested and ready to install. The interesting part of that is the injector was purchased new from Hilborn in 1977 by my uncle, Gordon Erickson. I have inherited the car from my uncle. In all this time, the car has never been completed. I have a 1st place trophy from the "unfinished" class of a car show in 1983, and the car still isn't finished. But, I am finally making progress and hope to have the car drivable this summer. The engine has only run a handful of times in all these years. I have most of the original paperwork from Hilborn. I have included a pic of one page showing some of the set up.

So, what information do I get from having the pump flowed and do I still need to do this with this set-up?

I was planning on getting "the book" and trying to learn a bit more before I started asking questions here. I do have the injector set up good enough to start and idle, but it seems to be running pretty rich and pops back through the injector a bit when revved up. I have adjusted the idle mixture a bit, but think I need to maybe lean it out a bit more there. It does have the 110 pill in the bypass. I assume I may need to lean it out here as well. Does the bypass fuel effect idle at all, or just higher rpm? The car was set up for or in South Dakota, and I am about 1600 feet higher elevation here. I have ordered some more pills, but I'm not sure how much or little of a change to make. Like I said, I'm trying to learn this as I go and I'm sure once I get the book that will help. I do appreciate any feed back that might be helpful in the mean time.

Thanks, Brad
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Re: New/Returning Member

Postby brad5557 » Thu Apr 14, 2016 12:05 am

Sorry. I had rotated the pic prior to upload, but I guess it didn't stay that way for some reason...
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Re: New/Returning Member

Postby Eric David Bru » Thu Apr 14, 2016 9:12 am

brad5557 wrote:Sorry. I had rotated the pic prior to upload, but I guess it didn't stay that way for some reason...


When you click on it it to see it full size it shows up correctly.
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Re: New/Returning Member

Postby cad500justin » Thu Apr 14, 2016 9:47 am

Welcome back!
I'd start by leak down testing all your poppets and starting a new thread in the fuel injection section.
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Re: New/Returning Member

Postby uglytruck » Thu Apr 14, 2016 11:09 am

brad5557 wrote:Hi Clay.

Thanks for the reply. I have not had my pump flowed. My hole system came from Hilborn and the paperwork says it has been flow tested and ready to install. The interesting part of that is the injector was purchased new from Hilborn in 1977 by my uncle, Gordon Erickson. I have inherited the car from my uncle. In all this time, the car has never been completed. I have a 1st place trophy from the "unfinished" class of a car show in 1983, and the car still isn't finished. But, I am finally making progress and hope to have the car drivable this summer. The engine has only run a handful of times in all these years. I have most of the original paperwork from Hilborn. I have included a pic of one page showing some of the set up.

So, what information do I get from having the pump flowed and do I still need to do this with this set-up?

I was planning on getting "the book" and trying to learn a bit more before I started asking questions here. I do have the injector set up good enough to start and idle, but it seems to be running pretty rich and pops back through the injector a bit when revved up. I have adjusted the idle mixture a bit, but think I need to maybe lean it out a bit more there. It does have the 110 pill in the bypass. I assume I may need to lean it out here as well. Does the bypass fuel effect idle at all, or just higher rpm? The car was set up for or in South Dakota, and I am about 1600 feet higher elevation here. I have ordered some more pills, but I'm not sure how much or little of a change to make. Like I said, I'm trying to learn this as I go and I'm sure once I get the book that will help. I do appreciate any feed back that might be helpful in the mean time.

Thanks, Brad


Flowing the pump is the central key information you'll need to calculate the tune-up. Pump flow is fairly linear and relative to engine rpm. Jim's book has all the math you'll need to get the job done. In the "Formulas" section there is a spreadsheet named FKal that puts the math in an easy to use format that will get you in the ball park. But as Justin mentioned, testing the poppet valves would be a great place to start. I would add that cleaning the nozzles would be good. If there is a fuel filter I would look at that too. After 40 years and only being run a few times the system may have suffered a little corrosion.
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Re: New/Returning Member

Postby Eric David Bru » Thu Apr 14, 2016 12:27 pm

brad5557 wrote:
...I am finally making progress and hope to have the car drivable this summer.

I do have the injector set up good enough to start and idle, but it seems to be running pretty rich and pops back through the injector a bit when revved up.

Thanks, Brad


Is this a street driven car?

Running gasoline?

8A/S nozzles are .0225"
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