How many guys are FI vs Carb - Page 2 - FFCars.com : Factory Five Racing Discussion Forum
 6Thanks
Reply
 
LinkBack Thread Tools Display Modes
post #31 of 40 (permalink) Old 08-08-2019, 03:48 PM
EFI Rules and Carbs Drool
FFCars Master Craftsman
 
Arrowhead's Avatar
 
Join Date: Sep 2007
Location: Stillwater, NY
Posts: 2,010
Quote:
Originally Posted by sread View Post
This looks interesting, but I suspect it might be one of those ideas that works better on paper than it does it real world. They claim you just tap into the existing fuel line but I don't see how it will generate the pressure necessary to atomize thru the injector. Will be interesting to hear some reviews.
It's more like a supplement to the carb so it's only adding fuel when it goes lean. It can't cut fuel from the carb. As far as the injector, the carb is atomizing fuel under a vacuum really. Designing a low pressure injector to atomize at 5-8 psi shouldn't be that hard.


FFR '33 #78
Picked up 5/30/09

Arrowhead's '33 Hot Rod Build Site:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Arrowhead is offline  
Sponsored Links
Advertisement
 
post #32 of 40 (permalink) Old 08-08-2019, 04:27 PM Thread Starter
Charter Member
FFCars Craftsman
 
FFR3247's Avatar
 
Join Date: Jan 2002
Location: Abbeville, SC
Posts: 644
Quote:
Originally Posted by Tom Sharpe View Post
Just my $.02 -- A carb is only tuned right once in a while. Old Ford 302 EFI is OK if left stock. The 4BBL EFI are better. Add timing control, even better. Port EFI w/ timing control is great if you can't afford the stack EFI or a factory crate motor. I'm the guy with too much compression, too much camshaft duration, and too big heads. I have 535HP, 30 MPG, runs perfectly at sea level, perfect at 14,000 feet, starts every time, sounds angry, never dies, never floods, never needs a tune-up, annual oil changes, throttle response that will scare you, and you can let it sit all winter, reach in and turn the key and it will start and idle w/o touching a pedal. Sure, it's a little more work to set up, but your wife can drive it w/o knowing all your carb secrets. I had an early Edelbrock Pro-Flow. It was hard to tune because of my radical engine configuration. Once it was tuned, it was as easy to drive as a new Corvette and as dependable as a Lexus. I ran it the last 20 years on the same spark plugs. The new EFIs are all MUCH better. The difference between port injection and EFI carbs is wet vs. dry flow in the intake, injection timing, more balanced air distribution, maybe a tad more power, and better able to tune engines with questionable parts selection. If you price a new intake, carb, and distributor, Port EFI is not much more. One more thing. Stack - Webber style - EFI looks authentic and runs even better, but make sure your EFI controller (and tuner) has a tune for stack EFI. They carry much less vacuum at idle so "standard" tunes are way too rich.
What efi are you using?


FFR# 3247,3535,3730,3951,4338, and 5665
FFR3247 is offline  
post #33 of 40 (permalink) Old 08-08-2019, 07:12 PM
Junior Charter Member
FFCars Master Craftsman
 
Avalanche325's Avatar
 
Join Date: Mar 2002
Location: Jacksonville Beach, FL
Posts: 2,837
I wanted my car to be old school like a Cobra. That includes, warm up, snotty when cold, have to pedal it now and then. I even push out of the garage so I don't rattle my wife's dishes. The kitchen is over the garage. That is all part of the fun to me, the experience, so I went carb. Tuning the carb was also part of the fun. Yes, I have better brakes and tires, so I'm a hypocrite to some extent.

MKIV Roadster....FFR7694
3-link Moser, Wilwood brakes, 347, TKO
Avalanche325 is offline  
Sponsored Links
Advertisement
 
post #34 of 40 (permalink) Old 08-08-2019, 08:04 PM
Senior Member
 
Join Date: Nov 2011
Location: Peoria, IL
Posts: 169
Quote:
Originally Posted by Avalanche325 View Post
I even push out of the garage so I don't rattle my wife's dishes.
Now that's funny...I do the exact same thing, except our garage is under our boys bed. He sure got a rude awakening 6:30 one summer morning before I started pushing it out
donkeykong is offline  
post #35 of 40 (permalink) Old 08-09-2019, 12:23 AM
Member
 
Tom Sharpe's Avatar
 
Join Date: Feb 2018
Location: Metro Atlanta, Ga
Posts: 47
Garage
Quote:
Originally Posted by FFR3247 View Post
What efi are you using?
Edelbrock Pro-Flow V1 on a 400 SBC
Attached Images
File Type: jpg Edelbrock-Pro-Flow-3-EFI-3220.jpg (45.9 KB, 10 views)
Tom Sharpe is offline  
post #36 of 40 (permalink) Old 08-09-2019, 01:00 AM
Junior Member
 
topfuelhydro1's Avatar
 
Join Date: Aug 2017
Location: Etowah, TN
Posts: 21
Normally I am a carb guy but couldn't resist these.

Steven
Attached Images
File Type: jpg IMG_1120-800x600.JPG (72.4 KB, 14 views)
topfuelhydro1 is offline  
post #37 of 40 (permalink) Old 08-09-2019, 04:32 AM
Senior Member
 
Derald Rice's Avatar
 
Join Date: Sep 2005
Location: Fort Collins, Colorado
Posts: 2,392
I'm a redneck carburetor guy because I just don't understand fuel injection


FFR 3319. On the road since 2002 with a lot of upgrades
Derald Rice is online now  
post #38 of 40 (permalink) Old 08-10-2019, 03:42 AM
Junior Member
 
Join Date: Nov 2017
Location: Medford, OR
Posts: 6
Back in college I wrestled with a Holley carb on my 69 Chevelle and for the most part it ran pretty well as long as I spent time under the hood. As a newbie for the cobra build I figured I would go with the reliability of EFI. I have a Holley Sniper EFI on my DART 347 and so far in the go cart stage it is much easier than I remember the carburetor being, however, certainly not hassle free. I have had to reprogram it several times because of stalling. I'm hoping that as I get it out on longer runs on the open road it will "learn" more and perform more smoothly.
Mark Eaton is offline  
post #39 of 40 (permalink) Old 08-10-2019, 08:00 PM
Junior Charter Member
FFCars Master Craftsman
 
Avalanche325's Avatar
 
Join Date: Mar 2002
Location: Jacksonville Beach, FL
Posts: 2,837
As you are finding out, both carbs and EFI need tuning. If you have to keep tweaking a carb, something is wrong with it. I haven’t touched mine for several years on a high strung engine. Road, autocross and track.

MKIV Roadster....FFR7694
3-link Moser, Wilwood brakes, 347, TKO
Avalanche325 is offline  
post #40 of 40 (permalink) Old 08-11-2019, 02:24 AM
Senior Member
 
Join Date: Oct 2012
Location: Grand Rapids, MI
Posts: 137
I'm with Derald, old school.

I've been bitchin' at, cussing out and banging on carbs for almost 50 years now, way too late to change.

I've had four different Holleys on the current motor, 670, 770, 780 & 940 and keep eyeing the 750/850 Ultra XP but that's only because I want something new/different. The current 780 runs well, and starts with 2 pumps, warms up in a few minutes w/o a choke, cruises at 2,200 rpm and pulls to 7k.

Every now and then I run the numbers on an EFI system that I'd like, $4k is a beginning. Probably not going to happen.

Change is good but it makes you crazy and I'm a long ways down that road.

Jim

Jim1855 is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the FFCars.com : Factory Five Racing Discussion Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome

 

Welcome to FFCars! The representations expressed are the representations and opinions of the FFCars.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Factory Five Racing, Inc. or Ford Motor Company. This website has been planned and developed by FFCars.com and its forum members and should not be construed as being endorsed by Factory Five Racing, Inc. or Ford Motor Company for any purpose. "FFR", "Factory Five", "Factory Five Racing", and the Factory Five Racing logo are registered trademarks of Factory Five Racing, Inc. FFCars.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting the FFCars.com Forum dedicated to Factory Five.