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02-10-2016, 11:13 AM | #21 |
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Re: blocking off the heat risers?
Your "Time capsule" will not be there long. Modern pennies will corrode away in short order. Wheat pennies will last.
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02-10-2016, 01:09 PM | #22 |
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Re: blocking off the heat risers?
In copper Vs copper plated zinc,the copper will win the corrosion battle between the two
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02-10-2016, 02:49 PM | #23 |
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Re: blocking off the heat risers?
Not sure about this "heat riser" on later flatheads. Does the 8BA in my 52 Merc have it? I can't remember the name of it but mine has some type of heat riser valve in the right side of the exhaust cross over pipe that operates by a heat sensitive spring. When cold the spring holds the flapper closed to restrict the exhaust flow.As the spring is heated up it pulls the flapper open.
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02-10-2016, 02:53 PM | #24 |
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Re: blocking off the heat risers?
The valve is just to increase the exhaust flow through the manifold until it heats up (like a thermostat). You would not use the exhaust valve with a blocked manifold crossover that's for sure. But if you were interested in performance you would remove the exhaust value in the first place.
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02-10-2016, 04:06 PM | #25 |
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Re: blocking off the heat risers?
The old 49 thru 53 Mercs don't run well until they are warmed up good. That valve, in good working order, just speeds up the process. Most folks ditch the 885 & later carbs like Ralph's. I like the stock performance of these well enough to keep them and they need that valve for the automatic choke to work right. I just make sure and maintain the valve in good working order.
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02-10-2016, 06:54 PM | #26 | |
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Re: blocking off the heat risers?
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02-10-2016, 11:39 PM | #27 |
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Re: blocking off the heat risers?
here's my 46 59a with 46 penny's
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02-11-2016, 01:36 AM | #28 | |
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Re: blocking off the heat risers?
Quote:
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02-11-2016, 01:52 AM | #29 |
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Re: blocking off the heat risers?
Ed Zachary! I find some wheatback pennies that have been in the ground for about 100 years, and they clean up very nicely, but try burying some pennies made between 1983 to 2016 in some slightly acidic ground for 12 to 24 months. Then dig them up and see what little is left of them. Even with the low cost of material used to make our modern pennies, it still costs the US Mint more to make a penny than they are actually worth. Now when there is talk about completely eliminating the US penny, many American's will cry foul in protesting this movement, as if they are losing something that is very important to our U.S. monetary system .
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02-11-2016, 12:32 PM | #30 |
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Re: blocking off the heat risers?
If it costs 1.01 cent to make a penny then it is a loss. They have been made at a loss for a long time now but I bet way more money is lost by the government in just about every other thing that they do.
If folks would turn in their buckets full of pennies every now and then, they wouldn't need to stamp out near as many as they do. The zinc penny is a total loss since it will deteriorate in just about any damp environment. It doesn't take long before they look like a slug from an electrical box. At least the copper ones last the test of time. A hundred years from now, folks will still be digging up copper pennies but they won't find any old zinc ones. |
02-11-2016, 01:48 PM | #31 |
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Re: blocking off the heat risers?
We quit making pennies here in Canada a year or two ago. I haven't missed them. Still got a few cans of the old ones accumulated from over the years.
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02-11-2016, 01:51 PM | #32 |
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Re: blocking off the heat risers?
The wheat penny's are solid copper. The newer penny's are made of Zinc and will probably deteriorate over time and not be found.
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02-11-2016, 03:07 PM | #33 |
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Re: blocking off the heat risers?
cruising around town - come to a steep hill -- wind it up in 2nd and listen to the music all the way down --of course agravating the hell out of the neighbors.
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02-11-2016, 04:13 PM | #34 | |
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Re: blocking off the heat risers?
Quote:
One thing I have noticed is that most of todays generation does not even want to carry a modern US penny, and when they get them in change from making a purchase, they just throw them away, anywhere they happen to be at that time. The real copper and copper alloyed coinage of yesteryear will in most cases last a very long time in the ground. I know this based on another hobby that I enjoy of searching for rellics and artifacts that have been lost most anywhere we look, many many moons ago. With our relatively short history here in the States, we can only find copper coinage from just before, and during our Colonial days, or about 400 to 450 years old. Now, in other countries, in and around Europe, we have found copper and bronze based coinage lost or hidden hundreds of years BC. It's mind boggling to see what's in places like the Brittish Museum's in the way of ancient coinage that has been removed from the ground in just recent times. Now, how does this all relate to Henry's early Ford V-8's from '32 to '53 ('54 in Can)? Well, I can say that I have personally found, and have seen others find, copper based World's Fair and Exposition coins and tokens made by the Ford Motor Co., back in the thirties, that are in near perfect condition after spending 80+ years in the ground Back to the garage!!
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02-13-2016, 11:18 AM | #35 |
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Re: blocking off the heat risers?
I used modern pennies and they just flew out the exhaust after a few mins of running.
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02-13-2016, 04:33 PM | #36 |
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Re: blocking off the heat risers?
In the late 40's we used pennies and on a winter weekend night we would meet
late at the Hot Shop at about 65th and Market street. Market street is the main street East and West through Philly. A group of Hot Rodders would head into Philly heading North on some side street like 54th street. These were old narrow streets with row houses on both sides and wind up in 1st gear and let it back down with the duals rapping and rattling the window. All the lights would come on in the houses. If they ever caught us they would have rung our necks. I now have some old Fords with nice mellow pipes but the pennies are a pain to install and hard to remove. I cut 2 pieces of about 20 gauge sheet metal about 1 5/8" long and about 1" wide. I bent a 90 degree bend 3/8 to a 1/2" on one end of the 1" side of both. Now you can loosen the intake manifold bolts and shake the manifold loose and slip these parts in on both sides to block the heat riser holes. They are thin enough that the gasket will seal them. If you want to remove them in the winter you can. G.M.
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