It's About Time (Not MPH)

[Tom Meyer]

I am not that smart of a man but if you are running a stock system why are you running in open loop? I am not up on the early ford systems and I am sure you have talk to others running this combo. Was the air filter a dry unit, if it is a oil coated one they mess up the maf sensor. Duty Cycle is injector percentage on off if you get around 85 % you need bigger injectors. Tom

[Mark Yacavone]

Originally Posted by Tom Meyer

I am not that smart of a man but if you are running a stock system why are you running in open loop? I am not up on the early ford systems and I am sure you have talk to others running this combo. Was the air filter a dry unit, if it is a oil coated one they mess up the maf sensor. Duty Cycle is injector percentage on off if you get around 85 % you need bigger injectors. Tom

Fair question... My answer is consistency. Every EFI car I fooled with, going back 33 years, was deadly consistent,..with no oxygen sensor.
Technically, mine would be closed loop , minus the sensor, and the ECU might be confused and looking for something that isn't there.
I plan on getting inside the computer soon .Probably after I run it once.
I'll give it some fuel and timing, and go from there. Meanwhile, I can't imagine maxing out an injector, with a stock camshaft.You?

[Dave Noll]

Originally Posted by Tom Meyer

I am not that smart of a man but if you are running a stock system why are you running in open loop? I am not up on the early ford systems and I am sure you have talk to others running this combo. Was the air filter a dry unit, if it is a oil coated one they mess up the maf sensor. Duty Cycle is injector percentage on off if you get around 85 % you need bigger injectors. Tom

I run my Escort in open loop in part because I run leaded gas, because I'm fiddling with the ignition lead in the computer but I don't want it to detonate, and in part because of what Mark said, Consistency. I'm turning off "Adjustments". The air filter was stock, a dry element in front of the MAF. I haven't Data Logged enough to know if mine is @ or past 85% but I did set the Requested AFR @ 12.7 and the car responded positively.

[Mark Yacavone]

So, we went down to Wild Horse for the Summit race last night.
There were enough S/SS cars to have a 3 round combo race..I'm glad I didn't totally embarrass myself with my friends.
I guess this is good news but it doesn't feel that way yet.
The little car seems to be okay...No wheel hop or torque steer that's usually associated with FWD cars.
It felt pretty good behind the line at 4 grand. I decided to bring it out at 5000 at that point. it immediately started leaning out on the line. It spun a bit then didn't want to rev up, so I shifted it low. That didn't help. It did it in every gear as I went thru in 4th, but way too low rpm-wise. It felt like about a second over run ..I had to look at the time slip twice to believe it..It ran about .56 under !.
I tried a second pass with the fuel pressure cranked up and some more heat in the motor. It shut down before the 60' clocks, so I just coasted thru and loaded it up and headed for the hills.

Bottom line here ,is it should be a second under car, with the computer straightened out...

I built the car for our local combo series, but the future of that looks rather bleak.
I'd probably sell it really cheap right now..I mean really cheap...before I get in the mood to start working on it again.
Meanwhile, here's a few left over pics.
This one is the water pump brackets, and yes , I owe you a finished picture, which I will do soon.




[img]http
s://i.postimg.cc/02gPqLGD/20210515-175323.jpg[/img]

[HP HUNTER]

Don't be a quitter

[Mark Yacavone]

Originally Posted by HP HUNTER

Don't be a quitter

I didn't think I had to prove to anyone, least of all myself, that I know how to do this s**t
LOL

[BigBlockBill]

Originally Posted by Mark Yacavone

I didn't think I had to prove to anyone, least of all myself, that I know how to do this s**t
LOL

My first thought was how someone could consider a guy that's done this since Jesus was a Bishop a quitter.......lol

[Mark Yacavone]

Quick update... Going to test and maybe bracket race this lil' honey Friday, Saturday @ Tucson.
I was able to gain access to the computer through the help of (new national record holder) Robin Lawrence @ Holley. Hoping for lots of improvement here.
Might even be ready for our Combo series early next year, if we get some dates confirmed.

BTW , If anyone is looking for a stand alone system for S/SS ,I'd recommend Holley.
Others may be "fast" but Holley's service network is second to none.

I lowered the rear end some more.The tire difference was making to look too weird for my taste.

[Shadylane]

Originally Posted by Mark Yacavone

So, we went down to Wild Horse for the Summit race last night.
There were enough S/SS cars to have a 3 round combo race..I'm glad I didn't totally embarrass myself with my friends.
I guess this is good news but it doesn't feel that way yet.
The little car seems to be okay...No wheel hop or torque steer that's usually associated with FWD cars.
It felt pretty good behind the line at 4 grand. I decided to bring it out at 5000 at that point. it immediately started leaning out on the line. It spun a bit then didn't want to rev up, so I shifted it low. That didn't help. It did it in every gear as I went thru in 4th, but way too low rpm-wise. It felt like about a second over run ..I had to look at the time slip twice to believe it..It ran about .56 under !.
I tried a second pass with the fuel pressure cranked up and some more heat in the motor. It shut down before the 60' clocks, so I just coasted thru and loaded it up and headed for the hills.

Bottom line here ,is it should be a second under car, with the computer straightened out...

I built the car for our local combo series, but the future of that looks rather bleak.
I'd probably sell it really cheap right now..I mean really cheap...before I get in the mood to start working on it again.
Meanwhile, here's a few left over pics.
This one is the water pump brackets, and yes , i owe you a finished picture, which i will do soon.




[img]http
s://i.postimg.cc/02gPqLGD/20210515-175323.jpg[/img]

Come on Mark, hang in there. You can figure it out!