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Topic Review (Newest First)
08-22-2012 02:40 PM
AutoGear No love for downdrafts? ouch. Shame too; theres a McKay manifold and 4 carbs on e(vil)bay right now; buy it now is 2600. No fuel lines or linkage I believe
08-22-2012 01:20 PM
35WINDOW Here's a little more about it (I read somewhere that this engine is still at Hilborn)-

Hemi Engine Photo 12
08-22-2012 01:12 PM
1971BB427
Quote:
Originally Posted by Kiid61 View Post

First ever twin turbo drag engine (claimed) feed into hilborne stacks I'm looking at side mounted. That's kinda fugly but still cool!
Looks like a pretty poor design for an exhaust system to produce high HP. wonder how such sharp bends would ever flow at high rpm's?
08-22-2012 09:37 AM
Kiid61 Thanks for the info guys... I just finished reading all mentioneoned on the hilborne site after being directed by their tech dep.. It's definitely achievable with an elec kit. Pricey buy but definitely cool an worth it. I'm gonna keep reading on converting old mech systems. The new stuff is huge dollars but I've been told used kits come up every now & then.. I'm in no rush.

First ever twin turbo drag engine (claimed) feed into hilborne stacks I'm looking at side mounted. That's kinda fugly but still cool!


I'll check out those links 35.. Cheers for that
08-22-2012 07:32 AM
AutoGear My suggestion? Individual Throttle Bodies or downdraft webers on the proper manifold. Neither one of these setups are going to like a rumpity rump camshaft but; you can screw together a 383 with a mild cam and still make plenty of power.

I had a close friend who tried the mechanical fuel inj thing. He's 30 like me and got a swingin deal from some old roundy round guys. He had enough to mock it up, and it looked extremely bad ***; but it never ran for beans. Everything was mismatched and for alky. Trying to get what he needed was very hard. He found some guy who ran Hilborns on the street and by the time they got off the phone he basically learned it was almost impossible to dial everything down to do what he needed. Its a dead nuts simple system and works great at what its designed for. It will require help to start, it will never idle for beans and its going to be a bear to source parts that work well for you.

If you put stacks on a set of downdrafts; you get 90% of the look with efficient carbs and about a 3rd of the cost.
With the webbers; find a brit car mechanic near you, he probably has 3 webber cores and a pile of parts to build them as a matched set.
08-22-2012 07:30 AM
35WINDOW There have been many engines that were/are run with Hilborn/Turbos/Superchargers (as far back as the 60's)-I think it would be a pricey unit, but it sure would look cool! Every one I've seen has been for competition use though-

As for running a mechanical Hilborn on the street, it can be done, but it is a pain-Hilborns were always known to work very well at WOT, and can idle well if tuned with a Synchrometer, however if you look at the fuel curve throughout the entire rpm range they are lean/rich, and depending on the Injector, the casting grows with engine temperature causing the butterflies to not fit their bores properly leading to inconsistent idleing. This is most prominent on older units where the butterflies are closer to the Head.

If you are dead set on doing this I would look into Fran Olson and Megasquirt-Fran is very good at converting mechanical Hilborns to efi (and they don't have the fuel rail "look"), has an A/FX Dodge done that way, and is one of the most knowledgeable guys out there for converting Stack Injection-he works with Mike Chilandro (also known as "Alkydigger"), and Mike can sell you a complete Enderle/Hilborn unit or he also supplies Fran (which I think is the most economical route)-

Here is a site with some Turbo/Stack units:

Redirect Notice

And, here is Alkydigger's site:

Alkydiggers Parts and Pieces | Specializing in Enderle and Hilborn Injections | 615-483-6830

And, here is Fran Olson's website:

EFI CONVERSIONS - FOX ENGINEERING CO.

Good luck!
08-21-2012 06:59 PM
1971BB427 One of the problems with mechanical injection is using a squirt of fuel in the injectors to start the engine. Do you really want a system that requires a helper to get started each time?
They do make electronic systems to adapt the old Hilborn units to run with a hidden controller, and they work well, and look good too.
I don't know of any way to feed 8 injector stacks with a turbo? Can't even visualize how that would be workable.
08-21-2012 06:35 PM
Kiid61 Each to their own? We don't all want to build stuff that's been done a squillion times before.
08-21-2012 06:17 PM
vinniekq2 nothing worse than looking cool and going slow
08-21-2012 06:04 PM
Kiid61 Cheers Vulk,

It's really both. They look, sound and perform great - that's why I want to run one. For cosmetic purposes the older units just look stacks better. 6 of 1 for performance because realistically I'm starting from nothing anyway. I don't mind putting time & learning into it. It's been a long term ground up build anyway.



They just look too cool!
08-21-2012 05:42 PM
Valkyrie5.7
Quote:
Originally Posted by Kiid61 View Post
Because young people have no idea about older stuff?
I believe the point he was trying to illustrate is that you have to have years of experience tuning and using mechanical fuel injection to make it street friendly. Running an EFI-based one isn't going to be much different as far as the learning curve if you're not computer literate.

Honestly the fake hillborn stack cover seems to be better for your purposes. If it's just for looks, get one for looks. If you want one for performance, then I'd suggest putting money and time into a lot more research before you purchase something.

STREETINDUCTION - Dummy Hilborn-Crower 8 Stack Fuel Injector Style Cover, Mounts over 4bbl Carburetor,
08-21-2012 04:58 PM
Kiid61 Because young people have no idea about older stuff?
08-21-2012 03:33 PM
vinniekq2 enderle mechanical injectors with pills for metering,,,,blah blah blah.On the street,yes Ive seen them. Usually attached to cars owned by older guys that raced alcohol injected front engine rails. With the years of past experience,they can tune them.If you are younger,then get electronic injection and use something you are more familiar with,,,,a computer.
08-21-2012 03:17 PM
Kiid61 Yup, a few as in two.. No real budget and I wouldn't bother with fake stuff. The turbos, at the end of the day are no bit deal but I'd really like to use an 8stack like the older type mentioned in my previous post. Has anyone used a mechanical system on pump gas for the street?
08-21-2012 12:40 PM
timothale
fake looks

I found a 671 gimmy on a wrecked barge, it had spent quite a few years under water, I was thinking about taking out the guts and setting it over my 4 barrel on the T bucket, A local racer came by and we pulled it apart, the insides were still good so he traded me out of it, hand polished it and put it on his 409. I have seen a few fake injector stacks, looks good for the WOW factor,
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