Turbocharger - Boost Pressure Specifications

86ford21

Article No. 86-6-16


TURBO BOOST PRESSURE SPECIFICATIONS


FORD 1983-86 THUNDERBIRD, MUSTANG, SVO MUSTANG


LINCOLN-MERCURY 1983-86 COUGAR, CAPRI


MERKUR 1985-86 XR4Ti


Turbochargers are being replaced unnecessarily because of a lack of information about correct boost pressures. Listed below is a specification chart by application to aid in the diagnosis of "loss of power" conditions.


Boost Pressure Table


Model Nominal Maximum Overboost Warning
Year Model Boost +/- .5 PSI +/- .5 PSI

83 Thunderbird M/T 10 PSI * 12.5 PSI
Cougar M/T 10 PSI * 12.5 PSI

84 Thunderbird M/T-A/T 10 PSI ** 12.5 PSI
Cougar M/T-A/T 10 PSI ** 12.5 PSI
Mustang M/T 10 PSI ** 12.5 PSI
Capri M/T 10 PSI ** 12.5 PSI

84-86 SVO Regular 10 PSI 17.5
Premium 14 PSI 17.5 PSI

85-86 Thunderbird M/T 12 PSI 17.5 PSI
Cougar M/T 12 PSI 17.5 PSI
Thunderbird A/T 10 PSI 17.5 PSI
Cougar A/T 10 PSI 17.5 PSI
Merkur M/T 15 PSI 17.5 PSI
Merkur A/T 10 PSI 17.5 PSI

* Overboost pressure warning prior to 4/4/83 was 11.5 PSI.
** Overboost pressure warning after 2/2/84 was 13.5 PSI.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"