Hello,
I have a 1980 Cobalt 19cd, 5.7l, 260hp, Pre alpha.
As far as i could tell the drive serial# is, 3343145
The engine serial# is, 5571786
Heres the problem, I installed new center riser manifolds, new risers,
new thermostat housing and thermostat. (140f) And thru hull exhaust.
When engine is at idle, the temp rises up to over 200 degrees.
Water is coming out of both sides of the exhaust. Seems to be less water coming out of the side that the starter is on though. (sorry can never remember starboard from port.) Anyways, when I speed the engine up to around 2000 rpms, the temp comes down to around 140 degrees. But when the temp comes down, the water stops flowing out of the exhaust on the side with the starter. Im thinking Impeller. What do you guys think?
By the way, It was running on muffs with plenty of water pressure.
I have a 1980 Cobalt 19cd, 5.7l, 260hp, Pre alpha.
As far as i could tell the drive serial# is, 3343145
The engine serial# is, 5571786
Heres the problem, I installed new center riser manifolds, new risers,
new thermostat housing and thermostat. (140f) And thru hull exhaust.
When engine is at idle, the temp rises up to over 200 degrees.
Water is coming out of both sides of the exhaust. Seems to be less water coming out of the side that the starter is on though. (sorry can never remember starboard from port.) Anyways, when I speed the engine up to around 2000 rpms, the temp comes down to around 140 degrees. But when the temp comes down, the water stops flowing out of the exhaust on the side with the starter. Im thinking Impeller. What do you guys think?
By the way, It was running on muffs with plenty of water pressure.
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