91 efi to carburetor swap
- Thread starter charms123
- Start date
By adjusting when the fuel is injected time wise it can really help the idle out. You still need to adjust fueling like a carbed car by trying to get the most vacuum. With the A/F ratio sometimes stoich is not the best anyways with a larger cam. I still think many people don't pay attention to the spark plugs enough either with EFI or carb and that tells the real story.
One of the reasons I stopped posting in this forum is threads like this. Too many purists, to many people telling others what they should do and them arguing about it instead of listening to what the OP is actually asking. 1st answer the question. 2nd if you can help the current situation then do it. Every thread of this type turns out the same way and the OP disappears into the background while everyone else bickers about who can tune FI, who can't, who has the most money to tune FI and why carbs suck.
Now to the OP:
You can use your stock FI fuel pump with a step down regulator that will get you down to the 5 to 7 psi needed to run a carb. An MSD distributor with a 6al or Mallory unilite dist with a Hyfire 6 box would be the best for ignition. A quick fuel carb is the best bang for your buck. Fuel mileage will be a direct reflection of how much you keep you foot into the secondaries. Me? Fuel consumption has never been one of my concerns. A nice Parker Funnelweb, weiand steath, performer or Vic jr inatke can be picked up used for a decent price. The intake you chose should be based on the head, cam and ci combo you currently have. A carb will not change enough in atmospheric conditions to really notice anything unless u drive it in the winter.
Now, FI is nice for a daily driver, boosted application and someone who has the time, knowledge or money to tune it correctly and really wants to (fine tune every aspect of the throttle position and atmosphere).
My wife's '94 is nodded and fuel injected. All our race cars are carbs.
Good luck with your project and stay focused on your long term goal. Don't make changes you can't use in the future.
Now to the OP:
You can use your stock FI fuel pump with a step down regulator that will get you down to the 5 to 7 psi needed to run a carb. An MSD distributor with a 6al or Mallory unilite dist with a Hyfire 6 box would be the best for ignition. A quick fuel carb is the best bang for your buck. Fuel mileage will be a direct reflection of how much you keep you foot into the secondaries. Me? Fuel consumption has never been one of my concerns. A nice Parker Funnelweb, weiand steath, performer or Vic jr inatke can be picked up used for a decent price. The intake you chose should be based on the head, cam and ci combo you currently have. A carb will not change enough in atmospheric conditions to really notice anything unless u drive it in the winter.
Now, FI is nice for a daily driver, boosted application and someone who has the time, knowledge or money to tune it correctly and really wants to (fine tune every aspect of the throttle position and atmosphere).
My wife's '94 is nodded and fuel injected. All our race cars are carbs.
Good luck with your project and stay focused on your long term goal. Don't make changes you can't use in the future.
One of the reasons I stopped posting in this forum is threads like this. Too many purists, to many people telling others what they should do and them arguing about it instead of listening to what the OP is actually asking. 1st answer the question. 2nd if you can help the current situation then do it. Every thread of this type turns out the same way and the OP disappears into the background while everyone else bickers about who can tune FI, who can't, who has the most money to tune FI and why carbs suck.
Now to the OP:
You can use your stock FI fuel pump with a step down regulator that will get you down to the 5 to 7 psi needed to run a carb. An MSD distributor with a 6al or Mallory unilite dist with a Hyfire 6 box would be the best for ignition. A quick fuel carb is the best bang for your buck. Fuel mileage will be a direct reflection of how much you keep you foot into the secondaries. Me? Fuel consumption has never been one of my concerns. A nice Parker Funnelweb, weiand steath, performer or Vic jr inatke can be picked up used for a decent price. The intake you chose should be based on the head, cam and ci combo you currently have. A carb will not change enough in atmospheric conditions to really notice anything unless u drive it in the winter.
Now, FI is nice for a daily driver, boosted application and someone who has the time, knowledge or money to tune it correctly and really wants to (fine tune every aspect of the throttle position and atmosphere).
My wife's '94 is nodded and fuel injected. All our race cars are carbs.
Good luck with your project and stay focused on your long term goal. Don't make changes you can't use in the future.
Now to the OP:
You can use your stock FI fuel pump with a step down regulator that will get you down to the 5 to 7 psi needed to run a carb. An MSD distributor with a 6al or Mallory unilite dist with a Hyfire 6 box would be the best for ignition. A quick fuel carb is the best bang for your buck. Fuel mileage will be a direct reflection of how much you keep you foot into the secondaries. Me? Fuel consumption has never been one of my concerns. A nice Parker Funnelweb, weiand steath, performer or Vic jr inatke can be picked up used for a decent price. The intake you chose should be based on the head, cam and ci combo you currently have. A carb will not change enough in atmospheric conditions to really notice anything unless u drive it in the winter.
Now, FI is nice for a daily driver, boosted application and someone who has the time, knowledge or money to tune it correctly and really wants to (fine tune every aspect of the throttle position and atmosphere).
My wife's '94 is nodded and fuel injected. All our race cars are carbs.
Good luck with your project and stay focused on your long term goal. Don't make changes you can't use in the future.
Sorry to hear that, you always have great posts. I hope I didn't come off wrong in some of my posts. It just seems to me that the same people that can't get there EFI to work right will change to carb and still not have it run right and the car will end up on craigslist lol.
The Weiand Stealth is a good all around intake. I helped a friend get all the stuff together to do his car carbed because he was taking the drivetrain from a 87 GT and installing in a 85 coupe. He got a nice distributor off ebay brand new that works great, and 1/2 the price of some of the others.
No man I respect your knowledge of EFI and the time you commit to helping members on NYM. I know that people give up on their combo's too easily especially when they get involved in something they don't understand. I just hate seeing the pissing matches that go on between a few members on here. I have to say some of the guys are just rude, ruthless and down right degrading when it comes to changing to a carb. Anyways, didnt want to jack the topic but answer the OP's questions.
1)while everyone else bickers about who can tune FI, who can't, who has the most money to tune FI and why carbs suck. 2)You can use your stock FI fuel pump with a step down regulator that will get you down to the 5 to 7 psi needed to run a carb. An MSD distributor with a 6al or Mallory unilite dist with a Hyfire 6 box would be the best for ignition. 3)A quick fuel carb is the best bang for your buck. 4)Fuel mileage will be a direct reflection of how much you keep you foot into the secondaries. Me? Fuel consumption has never been one of my concerns. 5) A carb will not change enough in atmospheric conditions to really notice anything unless u drive it in the winter.
6)Now, FI is nice for a daily driver, boosted application and someone who has the time, knowledge or money to tune it correctly and really wants to (fine tune every aspect of the throttle position and atmosphere).
7)Good luck with your project and stay focused on your long term goal. Don't make changes you can't use in the future.
6)Now, FI is nice for a daily driver, boosted application and someone who has the time, knowledge or money to tune it correctly and really wants to (fine tune every aspect of the throttle position and atmosphere).
7)Good luck with your project and stay focused on your long term goal. Don't make changes you can't use in the future.
2) I personaly am not a fan of step downs my self, seen a few fail. All MSD or other aftermarket brands is the best way to do this from dizzy to box to coil! As for fuel I run a glen performance tank with pushlock feed and return aero lines.
3) Quickfuel carbs are the cats azz, amazing carbs!
4) Exactly its a long standing MYTH that carb=no mpg... but i dont worry about it either
5) A point most do not realize, I can drive all fall untill temps dip below 45* without a tuning issue.
6) Something i already stated, very true.
7) Best advice one can give.
Now I do agree bickering gets a thread lost, and I probaly didnt help with trying to defend my points/knowledge. But sometimes the OP and others that use the search function can learn from us going back and forth.
On a side Note EHA racing I met your brother at the Olcott car show. He parked right next to me with his caddy. We talked a lot cool dude.
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Just got the wife a 84 with an Edelbrock Carburetor. So far it just needs adjustment for the choke when cold. I have a 91 with efi and starts easily and had found ways to adjust it to perform as I want. Should be interesting with the Carburetor. I will probably be asking for advice from time to time.
Hey man. I'm not here to argue of what is better. But the truth is that a EFI Car is Money to get right. But All my Foxes have been EFI. And when you start to put intake heads cam and All other bolt on's. You get to a point that you get limited. But If you have a sensor's up to par. You can get a chip. Or go with a not made anymore. But still being sold in the net Ford Racing RPM Exstender. Tune the A/R and RPM limit. And man does it get fun. Now I know for a fact the ethere way you got to spend Money. But my EFI stangs have given me great gas mileage. Crips throttle response. And problem free driving. No backfiring like carbs do. No needing to put choke on in cold weather. And in the end you will have spend Money on both setups. But being a EFI Car originally. I would get it sorted out first. Because in the end. I think you will be happy. As for EFI not being good to race. Not At All I beat up Carb stangs on the regular. And I quote.