Re: Heater hose connections

Posted by JWL On 2012/2/11 11:21:17

A water shut-off valve is usually fitted on the cylinder head of the earlier cars without a thermostatic valve (pre-22nd series?). It is opened in cold weather to allow hot water from the engine to circulate, and closed in warm weather to prevent water circulation. The water for the heater-defroster is taken off of the rear of the cylinder head because this is the warmest water in the system.

(o[]o)