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TKenton TKenton is offline
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Join Date: Nov 2001
Location: Ashland, KY
Posts: 47
944S Cooling system leaks

I need to tap into the collective knowledge of you guys who have experience with the twin cam 944 engines. I developed a small coolant leak this evening on the way home 3miles out.

Upon examination the culprit appears to be a fitting on the rear of the cylinder head. Standing in front facing the car the fitting is on the right rear of the head underneath the intake manifold and under and to the rear of the oil filler cap.

The fitting has a aluminum connector pipe pointing to the rear for a black rubber coolant hose approx. 1/2 - 3/4 inch i.d. This hose loops around the rear of the engine and connects to a metal tubing which runs forward toward the radiator along the left side of the head and above the exhaust manifold. My guess is that this is a source of coolant to the head??

The connector pipe or pipe nipple on the faulty fitting appears to be a simple interference fit and is quite loose and came out in my hands. That appears to be the source of the leaking coolant. Fortunately I only lost about a pint of coolant so the engine never overheated.

Now...
1. What is this leaking fitting called? Is it pressurized?
2. What is the best way to repair it? (it is too loose to simply hammer it back in). Would JB Weld work? or other substance like epoxy?
3. Does Haynes make a twin cam manual? as my SOHC manual is useless on engine issues.
Old 03-01-2002, 08:35 PM
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