Author Topic: heat riser valve door is gone  (Read 2286 times)

Offline millmaster65

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heat riser valve door is gone
« on: February 16, 2010, 05:33:04 PM »
I think the heat riser valve only helps with warm up. True or False?
I am currently replacing exhaust manifold gaskets an noticed there is no gate inside the valve.
If I decide not to replace the heat riser valve, would this affect overall performance?

Offline VileZambonie

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Re: heat riser valve door is gone
« Reply #1 on: February 16, 2010, 05:34:57 PM »
It's mainly used to reduce warm up time to decrease emissions not necessarily for driveability.
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Offline millmaster65

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Re: heat riser valve door is gone
« Reply #2 on: February 16, 2010, 05:45:19 PM »
That's what I thought.
Thank You Sir