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efi = 1.8L GT motor
sefi = 1.9L CVH
efi HO= 1G 1.9L HO GT motor (I think it's efi anyway)

I don't think the type of fuel injection a motor has will make a difference, as long as it's making the power, getting the fuel, and gettin down the track.
 

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Well EFI and the 1.9 are one and the same in certian 1st Gens. It's not a SEFI in his 90. Let me break it down on the terms here.

EFI = Electronic Fuel Injection
SEFI = Sequential Electronic Fuel Injection
CFI = Central Fuel Injection
EFI+HO = Electronic Fuel Injection and the vechile manufacturer has designated the engine as High Output.

Picking a motor on the basis of injection is like picking a glazed doughnut from a box of a dozen others just like it. Kinda pointless if you get my drift. What you want to know is what engine is best not which fuel system is best, i.e. which other flavor or type of doughnut reigns supreme.

So first we'd need to know what year Escort you have or are planning on getting. 1st Gens are 84-90. 2nd Gens are 91-96. And lastly 3rd Gens are 97-03. Each one has it's own set of motors that are either stock or can be swapped in. I'm biased and would say that the 2nd Gen is the best and has the most possibilities. So once you let us know that, then we'll help you spend your money. :lol:
 

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The 1986 to 1990 GT has a MPEFI HO (Multi Port Electronic Fuel Injection) HO (High Output)

It had 4 fuel injectors and 110 HP

The 1986 to 1990 (L, GL, and Pony, 1986 to 1988, and LX and Pony, 1989-1990) had an EFI (although it was a generic system) system.

It had one injector and 88 HP.

The 1991 to 1996 LX and Pony had SEFI. (Sequential Electronic Fuel Injection) Sequential means that each injector squirts fuel in sequence with the firing order.

It had 4 injectors, and 88 HP.

The 1991 to 1996 GT had a DOHC 16 Valve, MPFI (Dual Over Head Cam with Multi Port Fuel Injection) It was not a sequential system. Injectors 1 & 3 and 2 & 4 would inject fuel at the same time.

It had 4 injectors and 127 HP.


Each has its pros and cons. What type of racing are you going to do? HP is the key. A 2.0 SPI (Split Port Injection) has 110 HP while a ZETEC has 130 HP. The ZETEC has more performance parts then the above ones.

What car do you have? 1986 to 1990, 1991 to 1996, or 1997 on?


Tom
 

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Don't all engine heads with an intake on one side and exhaust on the other 'cross-ventilate'??

Good (and spot on) info regarding the injection methods, Caymen.

The MPFI method mentioned by Caymen is also known as 'Batch Fire'. This is how the MegaSquirt and SDS injection systems work. No matter if you have 2 cylinders or 12, half the injectors fire at a time.

Sequential really is the best, but hardest and most expensive to control & tune.. the differences are negligible in most scenarios.

Direct injection is by far the best method to date.. but has yet to be used with gasoline in the US because of our relatively dirty fuel.
 

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Beaverboy said:
Don't all engine heads with an intake on one side and exhaust on the other 'cross-ventilate'??

Good (and spot on) info regarding the injection methods, Caymen.

The MPFI method mentioned by Caymen is also known as 'Batch Fire'. This is how the MegaSquirt and SDS injection systems work. No matter if you have 2 cylinders or 12, half the injectors fire at a time.

Sequential really is the best, but hardest and most expensive to control & tune.. the differences are negligible in most scenarios.

Direct injection is by far the best method to date.. but has yet to be used with gasoline in the US because of our relatively dirty fuel.
I belive "cross flow" in the stanard term.

It does seem weird to fire a injector when the intake valve is'nt even open, but I guess if it work's.
 

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Beaverboy said:
Don't all engine heads with an intake on one side and exhaust on the other 'cross-ventilate'??

Good (and spot on) info regarding the injection methods, Caymen.

The MPFI method mentioned by Caymen is also known as 'Batch Fire'. This is how the MegaSquirt and SDS injection systems work. No matter if you have 2 cylinders or 12, half the injectors fire at a time.

Sequential really is the best, but hardest and most expensive to control & tune.. the differences are negligible in most scenarios.

Direct injection is by far the best method to date.. but has yet to be used with gasoline in the US because of our relatively dirty fuel.
It should be noted that MegaSquirt Ultra will support Sequential injection. And no CVH does not stand for Cross Ventilation Head. It actually stands for Compound Valve angle Hemisphereical if memory serves. By the way, great discription of the different injection systems Caymen.
 

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Actually, the earlier 4 culinders did not cross flow. Neither did the I-6's. The 1.6L, the father of the 1.9L, was different then the other 4 cylinders. A Pushrod I engine will almost always have bother the intake and exhaust on the same side.


Tom
 

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what sort of racing are you planning on doing?

road racing/autocross racing really requires some low-end punch to get you out of corners, and drag racing requires good torque, but also high horsepower, and most of it in the upper ranges of RPM. ice racing and rallycross requires smooth power and weight transfer. full-on-rally requires all of the above. :)

pick your kind of racing and go from there. don't think that just power will let you win, you also need a decent suspension and handling package.


--sarge
 

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Well put Sarge! Most people think that just having a badass engine is enough, but try to throw a stock Escort around a corner at speeds and you will find out why suspension is very important as well. now if you plan on going in staright lines, then it isn't as important obviously as it is to a rally car. Once you figure your choice out let us know, and best of luck!
 

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Discussion Starter · #14 ·
I bought a 1990 Escort 4 door hatchback GLxE and am planning on racing that on a 3/8 mile circle track.
But the engine has to be OEM/Stock the only thing they allow is upgraded parts or stuff they can't find LOL :)
I already made an Air Ram but I don't know how much that will do.
Is their anything else I can do ?
The car is skinned so it only weights like around 2220Lbs
and I am putting Racing Rims on
 

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Well you could sneak a cam in. They have got a couple available for those. Could slap on a GT head if you wanted. The GT's have a 110hp version of the motor you have. Just for reference sake you have the 1.9L motor in there producing 90hp in stock form.
 

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Yes the 1.9's are a SOHC motor. The cam is actually within the head it self but can be pulled fairly easily.
 
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