frozen heat riser control valve 394 V8
#1
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Location: Central Mass, west of Worcester
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frozen heat riser control valve 394 V8
My 1964 Dynamic 88 has a frozen heat riser control valve on the driver side exhaust manifold (of course it's on the driver side manifold since that's where they all are!). Any idea how to free it up? Anyone had to do this? I just finished for the day so I haven't even attempted it, figured I'd toss it out there
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#6
Warm the area, then put penetrating oil on it and tap/strike the joint. The penetrant will get wicked into the joint as it cools, striking it will cause vibration...rinse and repeat. These can be very difficult to get moving again.
You could also try putting it in an electrolysis bath.
You could also try putting it in an electrolysis bath.
#7
#8
As long as I remember, myself and most everyone else I've known basically welded them open or removed them and filled the holes. It will not cause any issues in the operation of the engine in any temp. It's common for them to get stuck in both the open and closed position.
#10
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As long as I remember, myself and most everyone else I've known basically welded them open or removed them and filled the holes. It will not cause any issues in the operation of the engine in any temp. It's common for them to get stuck in both the open and closed position.
#11
If it is regularly juiced with penetrating oil when the engine is warm and allowed to cool it may start to work again. Take note of the current external weight position and check it occasionally to confirm that it hasn't begun to move and stick closed.
#12
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July 1st, 2023 11:05 AM