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Mechanical Injection Gurus

Polara Pat

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I'm thinking about picking up an old Enderle stack injection set-up for our car that's for sale locally. I still need to source out a pump which I may run belt driven and any other associated parts. I'm thinking that I need to study up on running mechanical injection before I dive in head long since most guys I've talked to who have run it end up going back to carbs for the sake of tunability. Any tips, advice, experiences or links for good info would be appreciated.

Thanx
 
Not really for a Novice

There isn't really enough time, my effort in typing or room here to explain it all... It isn't cheap like a carburetor system, be prepared to spend $2500 minimum for "most" of the necessary stuff, unless you can find the proper stuff, used cheaper maybe... If you going to buy an Enderle Injection Stack System, make sure all the shafts are straight free moving no issues with the butterfly's or you will regret it, never over tighten the manifold it will screw up the shafts & linkages, an Injector Hat {like on a Blower} on a Tunnel Ram is really a better way to go, much easier to tune & deal with instead of stack type injection, but it's your choice, they both can work well if tuned & using the proper nozzles, bypasses & proper pump sizes, that's I-M-H-O anyway... You should call Enderle, get the appropriate nozzle sizes {get some 1 size lean 1 size rich & 1 size in the middle for infinite tuning capability}, & pump capacity for your fuel type & engine needs, have it flowed by a professional, you will also need an idle bypass & a couple of high speed bypasses, a mechanical fuel shut-off/bypass, ignition or mag kill, maybe even a longer barrel valve linkage arm that attach's to the barrel valve shaft, it makes the peddle more manageable, instead of feeling like it's "full on or full off all the time", when you have the shorter linkage it will seem like that's all you got, also when you have a fuel cell way in the back of the car it may be tough to prime the pump, on start ups, you will need to run at least 1 return line back to the fuel cell or as many as you have bypasses & check valves returning back to the tank & use quality 4-10 micron cleanable in-line filters & clean them often, if your planning on running a mechanical fuel injection, a pump right off the front of the camshaft with like a Milidon gear-drive & cover, worked best for me, especially for an all-out drag only car, if your planing on running around on the street at all, a belt driven pump with an armature, Gilmer cog belt & pulleys off the crankshaft {it ain't Cheap}, you need a bunch of room for all that stuff, like 6"s in-front of the engine, if you have a tight engine bay that's allot of stuff to dump in there, I would also suggest you install a small 5-7gal. vertical "cell" in the front of the car, especially if it's a race only type car... Depending on what size line you have now, you may/probably need to increase the size of the main supply line to a #12-#16 A/N or larger even depending on your engine needs & Pump size needs... I would highly suggest you get a large selection of "Pills" to tune with, for Main Circuit, Idle & Bypasses, you usually need some kind of "pill" in any of them, there are also "pill selectors" {winged & outlaw Sprint car guys use them} that you can use, that will give you a couple of sizes up & down at the turn of a dial instead of tearing everything apart to change all the pills {they are like a jet in a Carburetor,but you need them on the fuel in & out sides both}... I would highly suggest you buy a Book on "How to Tune & run Mechanical Fuel Injection System", it will be well worth the money, I also suggest you get a couple of good gauges & air line quick connects/fittings & tee's & hoses, to be able to set the system with air flow like a leak down tester, to be able to "flow test the barrel valve", you set one at 100psi & the amount of flow thru the other going thru the barrel valve is your flow rate, example; 80psi is 80% flow, 70psi is 70% flow.... Also try Fowler, Crower, Hilborn, Enderle, Pete Jackson {OLD units} or Watterman or others even, all have great systems that can work on any type of manifold & pumps or bypasses, depending on what type you end up choosing, most Fuel Injection system have the same theory any way, the parts can be different thou... GOOD LUCK & DO YOUR RESEARCH... when you get it right they are better than carburetor... Carburetors Suck/vacuum to get there fuel signal, Fuel Injection works on Pressure & Flow
 
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Holy crap Budnicks!! That's pretty much what I was after. Thanks for a boat load of info to set me on the road to a steep learning curve that is mechanical fuel injection. This car will pretty much never see the street (although I do have registration for it....soooo) I'll be sure and contact Enderle before I go too far and I'd love to buy a book on tuning these systems but where would one find such a thing?

Thanks again.
 
Google "Books on Mechanical Fuel Injection", there should be a bunch of them out there, maybe www.Racecarbooks.com/ or maybe www.racebooks.com/ or Maybe "Mancini Racing" or Maybe "Amazon Books" or Worthers Books or somewhere else like that, most of the companies like Crower, Hilborn, Pete Jackson, Enderle, Watterman or Fowler or some other Fuel Injection company will have books maybe also... you will also need a altitude/weather station & learn how to tune accordingly, you maybe able to get an app for a cell phone now even...LOL... Good luck & Happy Moparing
 
.............or just convert the Enderle to EFI

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i run a bird on my 500ci on alky, it sits atop indy tunel ram
im using a keith black timing gear/pump cover,
i will never go back to carb.
the motor stays cool in the summer on alky,
i have 5 gallon tank with #12 main line,located infront of engine.
the alky is hard on the eyes but makes power and is much cheeper than race gas $4.00 gallon
 
Kinsler also makes a "more streetable" spool for your barrel valve...they modify the idle transfer slot for a smoother transfer...I'm also in the process of going mechanical injection with alky..although I've read E85 has a better tuning window than gas is cheaper than gas...and not as hard on things as alky...just something you may want to look into... fuel injection enterprises-Spud Miller is the man you need to talk with..he is extremely knowledgable...well good luck- and once you go injection...you'll never go back to carbs
 
Give James Monroe a call at killer rons. He's a distributor for rons fuel injection. I went with his Terminator setup. Be sure you get his primer plus system also and a vacumm pump. Tell him what you have and he will set you up. Listen to what he tells you because he knows his stuff. I run it on my dragster and will never go back to gas. 1750 lbs,500 inch bbm, runs 5.0s at 131the in the 1/8.
 
mechanical injection in the works

Well I tried to upload a couple pics of my engine & current fuel injection build to date but can't get any pics to upload so I give...
 

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Oh well...lol..I guess it did load 1 pic..anyway that's my 1st attempt at mechanical injection and plan on having 3 set-ups..gas-E85/E98-alky....all bases covered with a jet change & spring change & should be good to go...everything I've read mechanical injection is very user friendly as long as you pay attention to what your engine wants/needs-so good luck..(I need some luck myself)...
 
Almost forgot..JR at RBS Superchargers is a good person to deal with & takes the time to explain & sort things out for you so ya don't. Have a meltdown ect.. & that your engine performs properly....very good people to deal with...good luck
 
Give James Monroe a call at killer rons. He's a distributor for rons fuel injection. I went with his Terminator setup. Be sure you get his primer plus system also and a vacumm pump. Tell him what you have and he will set you up. Listen to what he tells you because he knows his stuff. I run it on my dragster and will never go back to gas. 1750 lbs,500 inch bbm, runs 5.0s at 131the in the 1/8.

FairDeal; Welcome to FBBO, maybe you could go the the "welcome wagon" forum, get acquainted with more of us, we don't bite too hard anyway...LOL... Maybe introduce yourself & give us some back ground & some photos of you & your rides.... Good to have you here....
 
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