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#181
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There are no "cast steel" cranks. If this country had a functioning Federal Trade Commission, advertising "cast steel" when the material is obviously "cast iron" would result in recalls, fines, and prison sentences. The manufacturers are LYING when they tell you cheap-junk Chinese cranks are "cast steel".
Eagle actually bragged that their "cast steel" cranks have MORE carbon than the OEM "nodular" cast iron cranks. Steel is generally accepted to have an upper limit of about 2% carbon, while cast iron has more carbon than steel.--often 3% or more. Actual "steel" is difficult to cast. Add some carbon, to make "cast iron" and the casting process becomes much easier. |
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#182
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From my experience, anything that complicates the cores, material, or production methods that a willing foundry routinely does will kill this project immediately. So some super high nickel cast iron, "cast steel" that can be easily welded or any other kind of wizz bang cool ideas will just kill it. If these replacement iron heads are ever to happen, they need to be made of typical production machinery cast iron mix, 2 styles of cores, one D port, one round port. As cast around 70 CC with the ability of CNC a larger chamber. That's it. No other options. If you want to weld on them, buy aluminum, If you want serious race heads, buy aluminum. If you want to move all the valvetrain and valve centerlines around, buy aluminum. These would be replacement heads for the dried-up supply of Ram Air III, Ram Air IV, 455-HO and a few of the better D-port OE heads. Also for 73 and Up Pontiac non SD-455 engines that never had decent heads to begin with. Also a good replacement for the earlier 389-421 heads that were pretty lousy from the factory as well. SD 421 excluded of course. That's my vision of what these heads are for. I may be all alone on this.
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The Following User Says Thank You to mgarblik For This Useful Post: | ||
#183
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#184
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Maybe "hog hammers" really are cast steel. I wouldn't know. Never seen one, never looked at a metallurgical analysis of one. I don't know why "US made cast steel hog hammers" are relevant to this discussion about "bottom-feeder Communist Chinese auto parts." When the crankshaft manufacturer's representative proudly admits to the interviewer that his company's product has more carbon that the cast-iron OEM parts, it's obvious that calling the product "cast steel" is a flat-out absolute lie with no place to hide. https://www.hotrod.com/articles/0710...ankshaft-tech/ Quote:
The issue is that "steel" has LESS carbon than "cast iron". Adding more carbon to common/popular cast iron does not make steel, it makes a different grade of cast iron. Let's look at ASTM grades of "Cast Steel" https://www.reliance-foundry.com/wp-...ades-chart.pdf Notice that NONE of them have more than 1/2 of 1% (0.50) of carbon. Most have 1/3 or 1/4 of 1% But Eagle calls their carbon-infested iron "cast steel", and our government lets them get by with this deception. There are no cast steel heads. They may be any one of a hundred different grades of cast iron, but they're cast iron. Steelheads are a fish. Last edited by Schurkey; 12-02-2020 at 07:42 PM. |
#185
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Now I don't know if we need more or less government
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#186
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In this case, it's not the quantity of government; it's the fact that "watchdog" Federal agencies are far more comfortable being "Industry Lapdogs".
They're looking out for the corporations instead of looking out for We the People. |
#187
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Is there a possibility that this is going to happen?
__________________
Shawn 1971 Formula #s match white/tan 1973 TA Brewster/white #s match 1972 Buick GS455 #s match 69k miles now a 470 stroker. 1986 Buick Ttype 66K miles many mods 10 sec street car. 2001 Mustang gt premium vert. Mamas car |
#188
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The original creator of this thread/topic we are posting in, has stepped aside from pursuing the potential project for now.
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They were actually proposing to do D-Ports in Iron with high flow numbers. iirc Iron RoundPorts will sell Thats what most everyone Really Wants that i have ever known. Granted i don't run around with many racers or race car builders. Just plain old guys with Pontiacs in their garages NOBODY has ever said "i've got stacks and piles of Iron RoundPort heads that won't sell" |
#189
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Agree. If D-ports were the only thing on the table, may as well forget it. It's not like you can't find those everywhere for cheap already. I was just at Goodguys and the swap meet had quite a few sets of D- ports for sale, 62's, 13's, a set of 12's and a ton of 6X stuff. Practically giving those things away at $200-$400 a set. Quite a few iron intakes as well. Not a single round port head to be found though. They were all still sitting there at the end of the day too, so it's not like people were tripping over themselves to get them. Last edited by Formulajones; 12-02-2020 at 11:18 PM. |
#190
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I respectfully disagree that a round port iron head is the only thing that would sell. Again, just because there are hundreds of sets of lousy D port heads laying around doesn't mean GOOD d-port heads are lying in piles. A 280 CFM iron D-port ready to run pair of heads will set you back around 3K. We could cast them new with those kind of flow numbers easily with today's technology. |
#191
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Sure, you "can" weld cast iron, but it SUCKS. You have to grind deep wide groves, pre heat, peen the snot out of it, cool slowly...... and it still might crack. Its pour us so when used gets soaked with dirty oil contaminating it and it all boils up when you weld. Cast steel is not pour-us, very easy to weld. Note, I have 2 "cast steel" Eagle cranks. One was welded with plain hard wire in the balance job, welded perfectly. The other was sent out as a 3.25 main crank, cut down and the thrust welded up and machined. You can not tell it was even done. There is more cast steel out there than you think. |
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