: Hilborn injectors..
THE DUDE Apr 17th, 04, 11:24 PM Just wondering if anybody has had any experience with these. The car they would be going on is strictly a drag car, so every day drivability is not a concern. Would there be any performance increase over a standard hi-rise intake and big four barrel. I just think they would look awesome sticking out of the hood. :D
Tom Mobley Apr 18th, 04, 1:58 AM unless you want to go out and buy brand new from Hilborn or Crower or Kinsler, a complete matched and flowed system calibrated for your engine and car combination, I'd recommend you go for a single 4-bbl carb. Those things are really a PITA to get right if they're just a collection of parts. I speak here from years of experience struggling with used or pieced together injection setups on sprints and midgets.
Tom
BLK64SS Apr 18th, 04, 2:38 AM There is a site called " hre.com " These guys have been around Fuel Injection systems useing Alky, Gas and Nitro for years. Very Very knowledgeable. The site was open to anyone to veiw untill recently. Some of it still is but not the Fuel Injection board.
You can email Jim from the site and try for a " free trial " to check it out. Also one of the guys post at smokemup.com also. It would be worth it to atleast post there asking about it.
Greybeard Apr 18th, 04, 3:21 AM I'll side with Tom.
Getting someones "castoff" to work properly will be a challenge. I worked with FI in the '60s with a Jr. Fueler, and in the '70s with 7 different Hydro engines in two different classes. We used a dyno to set up the units for the boats, and I'd say we averaged 2 12 hour days before we were satisfied with our fuel curves.
A Hilborn, alky burning 302 I built in '75 using the best parts I could get was my first "over 2hp per inch" motor. During the mid '80s I got my hands on an intake and heads from a major Nascar team. I decided to try another 302 using those parts and a carb modified for alky. It fired up easily on the dyno, was simple to dial in, and outproduced the old injected engine. As we weren't using the same dyno, the amount may be suspect. The engine was a joy to work with during the season as it always started and ran, and ran hard.
427L88 Apr 18th, 04, 8:18 AM Mark I toyed with this while in a state of hallucinatory bliss dreaming of making the hood vents functional on a '67. The only plausible way to do it is to convert a unit to EFI. Force EFI would do it for $2500 or so at the time.
Also toyed with this as a kid ( mid 70s) and the trick at the time for running on the street was to have a gravity feed aux fuel tank.
Any of you "old timers" ( and I say that with the utmost of respect ) know why that would have been? The need to have a fuel reservior at a level higher than the injectors? Couldn't push high psi fuel through them?
mr 4 speed Apr 18th, 04, 8:22 AM http://www.chevelles.com/showroom/StoreyTimeMotor.jpg
:cool: graemlins/thumbsup.gif
THE DUDE Apr 18th, 04, 8:53 AM Thanks for the input guys! If I do end up trying this out, I would definitely get a complete setup from Hilborn. I agree it would be tough trying to piece together parts. One other question that I have is about the fuel pump. On all of the pictures that I see, it looks like the fuel pump is driven off the front of the cam. :confused: Does it have to be like this, or could I just run an electric fuel pump and run the line right to the intake?
1968 hot rod Apr 18th, 04, 8:55 AM Gene
Those types of pumps need a good "Head" pressure to prime well.The higher the fuel tank the better it will prime to a point.
Wolfplace Apr 18th, 04, 12:47 PM Originally posted by 427L88:
Mark I toyed with this while in a state of hallucinatory bliss dreaming of making the hood vents functional on a '67. The only plausible way to do it is to convert a unit to EFI. Force EFI would do it for $2500 or so at the time.
Also toyed with this as a kid ( mid 70s) and the trick at the time for running on the street was to have a gravity feed aux fuel tank.
Any of you "old timers" ( and I say that with the outmost of respect ) know why that would have been? The need to have a fuel reservior at a level higher than the injectors? Couldn't push high psi fuel through them? -
Gene,
The high tank was mainly so the thing wouldn't lose prime & die if you stopped it short after the burnout.
It was also easier than running fuel lines everywhere.
Drove a front engine injected fuel car for a number of years & the tank was out front a ways.
If you leaned on the brake a little too much after the burnout it could be quite embarrassing to hear the motor lean out & die as you sat about 50 feet down track awaiting the crew that ran out to push a very quiet car back to the starting line with very unkind things to say graemlins/sad.gif
Never mind how I know this :D
rwelch Apr 19th, 04, 8:42 AM [QUOTE]Originally posted by mr 4 speed:[QB]
Say Chris, is this car someone you know? If so, I've got a couple questions - could you drop me an email? -Bob
rwelch Apr 19th, 04, 8:44 AM [QUOTE]Originally posted by THE DUDE: [QB]
Mark, I've got a stack unit like that in the pic Chris posted but I'm planning on converting mine to EFI. -Bob
headerfire Apr 19th, 04, 11:15 AM THE DUDE,,,
Give this place a call & ask for Phillip.
Tell him Troy sent you! graemlins/beers.gif EARLY HEMI PARTS (http://earlyhemiparts.com/)
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