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09-29-2010, 08:07 AM | #1 |
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Join Date: May 2010
Location: Irving, Texas
Posts: 598
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Exhaust plug for the intake passage
Is there any kind of material that could be placed in the exhaust passage that crosses over through the intake? That's a big hole going from the exhaust valve chamber to that passage. That would eliminate one source of heat going into the water jacket. Will the plug (penny) do the same thing by stopping the exhaust flow? Thanks, Ed
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09-29-2010, 08:52 AM | #2 |
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Join Date: May 2010
Location: Atlanta area
Posts: 833
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Re: Exhaust plug for the intake passage
Two pennys will stop the heat riser through the intake manifold. This will not have any effect on the heat in the water jacket. If you have heating problems you need to look somewhere else.
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09-29-2010, 09:06 AM | #3 |
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Join Date: May 2010
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Re: Exhaust plug for the intake passage
As stated blocking the passage you described will not help cooling system overheat , I always blocked mine on a dual exhaust set up to change the exhaust notes and eliminate heat to the base of the carburetor,
I decided the best way for me to do this is to use the same year penny as the engine,lol, the new pennies tend to disappear after a while. |
09-29-2010, 09:14 AM | #4 |
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Join Date: May 2010
Location: oroville ca.
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Re: Exhaust plug for the intake passage
do not use the new copper plated zink pennies, use an older copper one in the 60.s
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09-29-2010, 10:16 AM | #5 |
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Join Date: May 2010
Location: Sagamore Beach, MA
Posts: 155
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Re: Exhaust plug for the intake passage
I have always plugged the holes with a plug you get at auto parts stores. They look like mini freeze plugs. 3/4 inch size works good.
I am now running un-plugged and it doesn't sound as nasty, but it sure runs better in the cooler weather. It actually sounds like I installed mufflers on my roadster. It's still loud, just not harsh.
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09-29-2010, 12:07 PM | #6 |
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Location: Mesquite, NV / Gurnee, IL
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Re: Exhaust plug for the intake passage
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Just curious do your exhaust/tail pipes have a crossover or do you run straight exhausts on each side? |
09-29-2010, 12:43 PM | #7 |
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Join Date: May 2010
Location: Sagamore Beach, MA
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Re: Exhaust plug for the intake passage
I run straight pipes ot the back. No crossover, but they are some what muffled by the 3 1/2 inch lakes pipes.
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If it's too loud, you're too old. |
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