Ram horn headers hidden lever?
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I was about to clean my block in prep for painting, and as I was about to unbolt the passenger manifold (stock ram horns) I noticed a lever of sorts that appears to be attached to the manifold. I'm not sure what this does, it is the first time in my life I have ever seen a manifold with this little guy on here, and I've been around sbc's all my life.
Anyway, it was there and appeared to be held at a certain point in via tie wire around the lever and exhaust pipe. Can anyone tell me what this does exactly? And why it was being held in a certain position? I doubt it would be some kind of exhaust cutoff or anything like that. It is only on the passenger manifold, not the driver side |
Re: Ram horn headers hidden lever?
It is a heat riser valve to help your engine warm up faster. It works on a counter weight so that it is wide open under full throttle.
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Re: Ram horn headers hidden lever?
Hello, I don't get a chance to help that often so I thought I would put my 2cents in. As jim said its a heat riser, there is a coil on it that heats up from the heat of the exhaust and opens a butterfly inside the pipe flow. The counter weight keeps it in the restricted position the Tie wire might mean its broken and not working. I think its to help the crossover heat in the intake when its cold. Lots of them are removed when not needed. hope this helps.
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Re: Ram horn headers hidden lever?
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Re: Ram horn headers hidden lever?
Thanks for the help guys. Much appreciated
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