Quote:
Originally Posted by The Rocknrod
I don't have an exhaust yet so I've been watching this. So a cross-over pipe and resonators are they key?
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Yes, but I've learned more than that too. See the thing is as you get it quieter you hear more noises that you never noticed before. As the exhaust note diminished I noticed lots of noise from the motor. That led me to switch from an air filter housing that was open 360 degrees to one only open in the front. (kind of my homemade version of the old Caddy unit.) That helped by dulling the sucking noise of the carb. I also learned that even a small hole in the firewall like a deteriorating grommet was a conduit for noise. Dropping a light under the hood and looking cabside in the dark suprised me at how many litlle gaps around hoses and grommets needed to be addressed. Also as I mentioned above, the manifold to block seal. I never hear a rythmic click or anything from there, but turns out it was an overall dull roar....and the stink of exhaust when working on the motor while it ran. After machining the manifolds I was able to lose the gaskets and when I fired it up I was surprised that what i thought was normal motor noise from the carb, fan and belts was actually the dull roar of leaking exhaust! Then I said....."Hey, I think my alternator is getting loud"
