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Heat riser on exhaust question

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Old Sep 14, 2018 | 10:03 AM
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rsh1966
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Heat riser on exhaust question

Ref: 1966 f100
I know that the heat riser Is on the exhaust to get the engine warmed up faster but my question is.....If the heat riser is not functioning will the motor rung ok after running for a while or will the motor not run smoothly. So, is the heat riser really necessary?
I would post a pic but I don't have one right now.
thanks
rsh1966







 
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Old Sep 14, 2018 | 10:19 AM
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Originally Posted by rsh1966
Ref: 1966 f100
I know that the heat riser Is on the exhaust to get the engine warmed up faster but my question is.....If the heat riser is not functioning will the motor rung ok after running for a while or will the motor not run smoothly. So, is the heat riser really necessary?
I would post a pic but I don't have one right now.
thanks
rsh1966
No, not really necessary - once the heat riser opens fully then it is (almost) like it's not there. It is not needed once the engine is warmed up and lots of people run without them. If the heat riser is rusted/frozen open it doesn't cause any harm but if it is rusted shut or the spring is broken then it can at least partially block the exhaust on that side so sometimes they can do more harm than good, too.

Chad
 
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Old Sep 14, 2018 | 12:41 PM
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Thanks Chad, that is what I though but it is always good to hear other opinions.
thanks
Richard
 
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Old Sep 14, 2018 | 03:20 PM
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Many people would wire them open or remove the flapper entirely. Don't want it rusted/stuck in the closed position.
 
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Old Sep 14, 2018 | 08:10 PM
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I usually always cut the flapper out, back in the day.
 
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Old Sep 15, 2018 | 10:04 AM
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