Reply To: Jetfire Heater Hoses

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#11864
JimNoel
Participant

The Jetfire was the only model/engine that used a metal pipe to carry the heater coolant return along the right valley of the head and intake manifold. The metal pipe on the Jetfire engine has a small, short nipple at the firewall side of the pipe for the coolant from the turbo compressor housing and throttle body to be returned to the water pump with the heater coolant. All non-turbo engines used a long rubber hose to return the heater coolant. See picture 15-108 on page 15-106 of the 1963 Service Manual.
The 1963 Oldsmobile Service Manual should be “required” for all 1961 to 1963 F-85 owners.

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