Numbers ?
What years were the XR-7 (turbo) made?
84-86
What years were the Turbo Coupes made?
83-88
What years were the Svo made?
84-86
What years were the Merkur XR4TI (turbo) made?
85-89
What years were the Mustang GT (2.3turbo) made?
83-84 GT in convertible and hatch only
79-81 The GT's were a carb. Turbo
What years were the Capri RS Turbo made?
83-84
79-82 Capri's were a carb. Turbo
Engine?
What/where is the VAM meter?
The VAM is the Vane Air Meter; it is a pre mass air unit. It is located on the pass. side under the air filter unit.
Which cars have the big vam and small vam?
Small Vam is found in:
85-89 Merkurs
83-86 Turbo Coupes
84-86 XR-7 Cougars
83-84 GT turbos
83-84 Capri RS Turbo
Big Vam is found in:
All Svos
87-88 Turbo Coupes
Vam Size
What/where is the TPS?
The TPS is the Throttle Position Sensor, it is located on the throttle body and allows the computer to read the position of the throttle and adjust accordingly
TPS
What/where is the IAC?
The IAC Idle Air Control it is located on the throttle body just above the TPS and helps control the idle.
IAC
What/where is the ACT?
The ACT is the Air Charge Temperature and is located on 87-88 Turbo Coupes. It measures the air coming into the intake after the turbo so the computer can correctly alter the timing. (Only found on 87-88 Turbos.) It is located in the lower intake manifold facing the firewall. It is the lower of 2 sensors found in that area.
ACT
What/where is the Knock Sensor?
The Knock Sensor allows your computer to hear detonation in the engine and retard the timing. (4 square) It is located in the lower intake manifold facing the firewall. It is the lower of top sensors found in that area. (4 in-line) is located in the lower intake manifold and points at the fender. This sensor is commonly unplugged as it to prevent unnecessary retarding of the timing due to false detection of detonation.
Knock Sensor
What/where is the O2 sensor?
The Oxygen sensor is used to sense the presence of oxygen in the exhaust gas and signals the computer, which can reference the voltage signal to an air/fuel ratio. It is located on the elbow of the exhaust system, which connect the turbo to the down pipe.
o2 Sensor
What/where is the FPR?
The FPR is the Fuel pressure regulator. It helps keep a constant pressure of fuel to the engine. It is located between the upper and lower intake manifold at the end of the fuel rail.
FPR
What/where is the BCS?
The BCS is just an electronically controlled on and off valve. If you look at the way it is set up with the "T" fitting, it works the same as a bleeder valve. But instead of using an adjustable valve it has a specific sized hole in the "T" fitting that allows a specific amount of air to escape away from the wategate's pressure line. The BCS either turns on to allow the air to escape away from the wastegates pressure. Since this air is escaping then the more air is needed to reach the diaphragms "preset" 10-PSI spring rate to allow it to push open the wastegate. With the BCS off then all of the air pressure goes to the diaphragm and as soon as 10 PSI is reached the wastegate is pushed open. It is located on the passenger inner fender next to the BAP
BCS
What/where is the Wastegate?
The wastegate is just a valve that allows air to bypass the turbo's exhaust turbine. No air blowing on the turbine means no boost is made. It is controlled by the diaphragm that described above. It is just a flapper door that is controlled by a spring set for 10 PSI. All the turbo cars have diaphragms set for 10 PSI .
Turbo diagram
What/where is the BAP?
Also know as BPS. BAP is a derivative of MAP. BPS/BAP is a barometric pressure sensor. In is a minor computer input that allows the computer to make corrections of the fuel and timing tables for different altitudes. Air density is different at different elevations. Just like how you had to tune a carbureted car differently if you drove it into the mountains. It is located on the passenger inner fender next to the BCS.
BAP
Where is the PCV?
The Pcv Valve in these cars is hidden behind the alternator. The best way to explain it is to show it (provided by the link below).
PCV
What/where is the EGR?
The EGR is the Exhaust gas re-circulation. It allows gases from the exhaust to go back though the intake and get re-burned. It is pretty much an emissions thing. Although it does help with gas mileage, I think that is because it is displacing the air and that will require less fuel to be added since there is less air. It is attached to the throttle body near the TPS. There is a tube that runs from the back of the exhaust manifold around the back of the engine and to the EGR.
EGR
What fuel injector is 35bls?
The 35lb fuel injector is a low impedance fuel injector.
The top of the injector is brown.
It can be found in:
85.5-86 XR-7 Cougar
85.5-88 Turbo Coupe
85-89 Merkur
85.5-86 Svo
What fuel injector is 30lbs?
The 30lb fuel injector is a low impedance fuel injector.
The top of the injector is green. It can be found in:
83-85 Turbo Coupe early
85 Merkur
84-85 Svo
84-85 XR7
83-84 Mustang GT
83-84 Capri RS Turbo
Fuel Injectors
Intake manifolds, 4 in-line vs. 4 square?
The 4 in-line intake manifolds were found in pre 85.5 2.3. The runners are in a line. The 4 square intake manifolds are found post 85.5. These runners are slightly larger and are the more favored of the two.
Intakes
What car(s) have a Garrett T3 turbo?
**All Merkur
**All Svos
**All 83-86 Turbo Coupes
**All 84-86 XR7, 2.3 Cougars
**All 83-84 GT Turbo
**All 83-84 Capri RS Turbo
what car(s) have an IHI turbo?
**All 87-88 Turbo Coupes
What cars have what size turbo?
| 83-84 GT Turbo |
.60 & .63 A/R |
| 83-84 Capri RS Turbo |
.60 & .63 A/R |
| 84-86 XR7 Cougar |
.60 & .63 A/R |
| 84-85 SVO |
.60 & .63 A/R |
| 85.5-86 Svo |
.60 & .48 A/R |
| 83-86 TC |
.60 & .63 A/R |
| 87-88 TC |
IHI Turbo |
| Early 85 XR4TI |
.60 & .63 A/R |
| 85.5-89 XR4TI |
.60 & .48 A/R |
| |
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What is the diff between a Garret and an Air Research Turbo?
There is no difference. They are the same company.
Which 2.3T were intercooled?
84-86 Svos
87-88 Turbo Coupes
Which cars have an E3 or an E6 exhaust manifold?
E3 and E6 exhaust manifolds are defined by their production number E3 means that is was produced in 83. E6 means it was produced in 86 so all turbo manifolds post 86 are E6.
E3 vs. E6
Trans ? Which transmission came in which car?
| 83-84 GT Turbo |
---T5 |
| 83-84 Capri RS Turbo |
---T5 |
| 84-86 Cougar. XR7 |
---T5 or C3 |
| 84-86 SVO |
---T5 |
| 83-86 TC |
---T5 or C3 |
| 87-88 TC |
---T5 or A4LD |
| 85-89 XR4TI |
---T9 or C3 |
| |
|
Which T5 5sp Transmissions are world class?
All t-5 transmissions after 86 are World Class T-5's
Diff?
What diff and gears does the Svo have?
The 84 Svo had a 3.45:1 final drive
The 85-86 Svo had a 3.73:1 final drive
All Svo mustangs came with a 7.5 rear diff.
They all were 5-lug and were rear disc brake equipped.
What diff. and gears does the TC have?
83-86
3.45:1 final drive
83-86 TC were 4 lug with rear drum brakes.
87-88
The auto had a 3.73:1 final drive
The 5sp had a 3.55:1 final drive
All 87-88 TC came with the stouter 8.8 rear diff.
They all were 4 Lug and were rear disc brake equipped
What diff. and gears does the Merkur have?
5sp final drive is 3.64:1
Auto final drive is 3.36:1
They have a 7.5 diff. from the American produced 7.5.
They have a 26 spline instead of a 28
What diff. and gears does the Mustang GT have?
3.45:1
all had the 7.5 rear with 4 lug rear drum brakes.
What diff. and gears does the Cougar xr7 have?
3.45: 1 final drive
all had the 7.5 rear with 4 lug rear drum brakes.
What diff. and gears does the Capri RS Turbo have?
3.45: 1 final drive
all had the 7.5 rear with 4 lug rear drum brakes.
Electrical? What is an EEC-IV?
The EEC-IV is the Electronic Engine Control processor the vehicles are equipped with.
Where is the EEC-IV computer located?
It is inside the vehicle and is located just behind the passenger kick panel
Computer Location
What are the diff EEC-IV? Which cars?
| 84 Svo 5sp |
--- ZBA and TE |
| 85 Svo 5sp |
--- TJ and PJ |
| 85.5-86 Svo 5sp |
--- PE |
| 83 TC 5sp |
--- PC1 and ZGA |
| 84 TC 5sp |
--- PC1 and TF and TC |
| 85-86 TC Auto |
--- PK1 |
| 85-86 TC 5sp |
--- PC1 |
| 87 TC 5sp |
--- LA and LA2 |
| 88 TC 5sp |
--- LA3 |
| 87-88 TC Auto |
--- LB2 and LB3 |
| 88 TC Auto |
--- 8UA |
| 85 XR4TI Auto |
--- PK |
| 85.5-89 XR4TI Auto |
--- PK |
| 85-89 XR4TI 5sp |
--- PF2 and PF3 |
| 83-84 GT Turbo 5sp |
--- TA |
| 83-84 Capri RS |
--- TA |
| 84-86 XR7 5sp |
--- PC1 and TA |
| 84-86 XR7 Auto |
--- PK1 |
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79-81 Carbed Turbos are NON-computer Cars
Mods ?
What K&N cone filter will attach to the Big Vam?
It is a universal 6" cone. Part number RE-0930
How to improve the fuel system?
*The fuel pump can be replaced with either:
190lb pump
255lb pump
* An adjustable FPR would be recommended
* Larger fuel injectors i.e. 30lb to 35lb or 35lb to 42lb or 42lb to 55lb
