So I just got my distributor back from MSD after I sent it in 3 weeks ago because it was new and the coil was bad. Open the box up, and Im greeted with what you see in the picture. 3 weeks I waited for this part, and its just worse. They will send me a new one the said. Well, going to have to wait another couple of weeks for the new one.
got my distributor back...
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Damaged in shipping? If all it is a crack in the cap, put it in and change the cap when it arrives.
nice. Another MSD winner.
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Just an off-hand question... why is it Tom can bash MSD in every post about distributors??
I like Tom and he's very knowledgeable, but all other bash threads/posts get the axe... just sayin'...
I like Tom and he's very knowledgeable, but all other bash threads/posts get the axe... just sayin'...
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Don't ya just love MSD, that's why I have a Mallory dist.
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Dave. I too am very interested in the answer.
i have been dealing with a couple Co's on parts with problems, and they have no problem sending me out the replacement parts first, even sending a return tag i can put on the outside of the box for the return part to ship it back-i realize its not always prat. to do this, but on small parts, why not-now i realize there are people who create the damage and the Co wants to have the part back so they dont eat the cost, but some stuff is common sense
i think we are only allowed to bash non sponsers, lol
i think we are only allowed to bash non sponsers, lol
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I believe this covers it...
http://www.chevelles.com/forums/misc.php?do=showrulesChevelle Tech Rules said:
Posting KNOWN FACTS about a specific product TYPE, and FUNCTION shouldn't be construed as "bashing", but it always is.
A brief explanation of heat leaching media and those that do not.
Lets say you have a heat source, such as an electrical coil, like in a transformer up on a power pole. Considerable heat is made in the operation of that process, and it MUST be dissipated. dissipated to what, in that case, would be outside AIR. A media is placed around the coil windings, to insulate each winding from each other winding LAYER. IF the media that separates the windings either fails, or 'disintegrates' from the heat NOT being dissipated, a LAYER SHORT occurs.
Now, how do we handle the heat dissipation from the windings/insulation, to the outside air? Well, I can think of two ways used in come coils, either oil, or epoxy.
Lets take a look at oils first. As we are aware, the oil would completely permeate the windings, and insulation media, and, also be contained inside the coil metal jacket. There would be a boundary area between the coil and inner side of the jacket. But, HOW DOES THE OIL TRANSFER HEAT??
Good, sensible question. As the inner boundary layer of oil is in contact with the coil (heat source), it becomes hot, (which, just like most liquids), rises to the top of the oil pool. the hot oil migrates outward inside the case, to the inner side of the case jacket, where it dissipates the heat outward, through the case jacket, to the outside air. The oil on the inside of the case jacket then cools, rejecting its heat, and by reason of that cooling, falls down the inside of the jacket, and ends up in the second pool of oil below the windings, the cool oil, and is then re-heated, and goes through the whole heating, migrating, cooling, migrating, heating process, over and over again.
Think of that process as somewhat the same as a cooling system on YOUR engine, radiator (outer jacket, pools of oils, hot and cool (upper and lower tanks), heat source (engine). But, you ask, "where's the coolant pump"? Well there ain't one in this 'THERMO-SIPHON' system, the heated and cooled liquids displace themselves. Early automotive engines didn't have water pumps, they used a thermo-siphon cooling recirculating system, just like that oil filled transformer we just discussed, up there on the power pole. This is the way a liquid cooling system without a pump "leaches" heat away from a source, and dissipates it.
Now, for epoxy as a heat transfer/dissipating media. It Ain't. Lets take a look at that same power pole transformer, only this time, it is filled with epoxy, instead of oil. First, we should be aware that an epoxy resin ISN'T capable of leaching heat away from a heat source, only forming a barrier to keep that heat from migrating away from its source.
This would give us NOT a heat leach, but a heat stove, in that the heat cannot leach away from its source (stove). So, since we have a heat stove to hold heat to a winding, we can only expect to have issues from heat destroying the windings insulation, causing a 'LAYER SHORT' to any number of windings layers, which creates a different resistance to the coils, resulting in more heat, and on, and on.
As a side note here, some years ago, a noted company that produced what we are not discussing here, the transformers for one type of thing here, claimed their epoxy heat stoves, were the best heat leaching devices on the market, as they utilized "a very special heat leaching epoxy filler". Come to find out there is ONE, and ONLY ONE epoxy that is considered a heat leach. Now, upon further extensive exploration, it was found that the ONLY heat leaching epoxy was only used in only one application on our Space Shuttle, and its cost was a staggering $100,000.00 PER OUNCE. So much for the affordable cost of that heat leaching epoxy supposedly used in caps on certain automotive products.
Since we know epoxy is a heat BARRIER, and not a heat leach, it cannot transfer heat away from a winding in a transformer, and only acts exactly like an epoxy carburetor heat shield/spacer. This excessive heat is the primary reason those transformers that use epoxy as a filling/media, FAIL from heat induced layer shorting, and, mostly, take other components out as they fail, from the electrical loading going bonkers on the other components to failure as well.
Now, we get to the part where I get called all sorts of names, and of being an 'idiot', etc. Ever feel/measure the outside temperature of both these types of transformers? The one that FEELS COOLER of the two, is actually HOTTER INSIDE, and is the epoxy filled transformer. The one that feels HOTTER outside, is actually cooling the windings better than the other media is. THAT IS MEASURED FACT. Then, there are those that insist they can't live without a coil that will withstand the vibration of a boulder crushing machine, because they believe the hype that they need one. Hey, if the vibration is that bad, find and fix the vibration source in the engine, on the vehicle, and, use a rubber mounting isolator to mount the oil filled coil, they are readily available, and...WORK.
That's the way it all actually works, folks.
Now, of course, we are not discussing power pole transformers, only things for our vehicles, that IF we mentioned the brand names for, others would get way, way too irritated, and ban us, because they felt we were 'vendor bashing', when it just plain never happened.
On a completely different subject, anyone ever see a rotor/carbon brush/cap burned at the center terminal of a GM distributor that has a transformer in the cap? Why did that happen? Well, two different things come to mind. Either wrong assembly of carbon brush causes gap between brush and rotor tip, creating over loading of the transformer, and excessive heat transferred down the brush/gap, and/or, a defective transformer not dissipating a 'layer short'. Simple as that.
End of explanation.
A brief explanation of heat leaching media and those that do not.
Lets say you have a heat source, such as an electrical coil, like in a transformer up on a power pole. Considerable heat is made in the operation of that process, and it MUST be dissipated. dissipated to what, in that case, would be outside AIR. A media is placed around the coil windings, to insulate each winding from each other winding LAYER. IF the media that separates the windings either fails, or 'disintegrates' from the heat NOT being dissipated, a LAYER SHORT occurs.
Now, how do we handle the heat dissipation from the windings/insulation, to the outside air? Well, I can think of two ways used in come coils, either oil, or epoxy.
Lets take a look at oils first. As we are aware, the oil would completely permeate the windings, and insulation media, and, also be contained inside the coil metal jacket. There would be a boundary area between the coil and inner side of the jacket. But, HOW DOES THE OIL TRANSFER HEAT??
Good, sensible question. As the inner boundary layer of oil is in contact with the coil (heat source), it becomes hot, (which, just like most liquids), rises to the top of the oil pool. the hot oil migrates outward inside the case, to the inner side of the case jacket, where it dissipates the heat outward, through the case jacket, to the outside air. The oil on the inside of the case jacket then cools, rejecting its heat, and by reason of that cooling, falls down the inside of the jacket, and ends up in the second pool of oil below the windings, the cool oil, and is then re-heated, and goes through the whole heating, migrating, cooling, migrating, heating process, over and over again.
Think of that process as somewhat the same as a cooling system on YOUR engine, radiator (outer jacket, pools of oils, hot and cool (upper and lower tanks), heat source (engine). But, you ask, "where's the coolant pump"? Well there ain't one in this 'THERMO-SIPHON' system, the heated and cooled liquids displace themselves. Early automotive engines didn't have water pumps, they used a thermo-siphon cooling recirculating system, just like that oil filled transformer we just discussed, up there on the power pole. This is the way a liquid cooling system without a pump "leaches" heat away from a source, and dissipates it.
Now, for epoxy as a heat transfer/dissipating media. It Ain't. Lets take a look at that same power pole transformer, only this time, it is filled with epoxy, instead of oil. First, we should be aware that an epoxy resin ISN'T capable of leaching heat away from a heat source, only forming a barrier to keep that heat from migrating away from its source.
This would give us NOT a heat leach, but a heat stove, in that the heat cannot leach away from its source (stove). So, since we have a heat stove to hold heat to a winding, we can only expect to have issues from heat destroying the windings insulation, causing a 'LAYER SHORT' to any number of windings layers, which creates a different resistance to the coils, resulting in more heat, and on, and on.
As a side note here, some years ago, a noted company that produced what we are not discussing here, the transformers for one type of thing here, claimed their epoxy heat stoves, were the best heat leaching devices on the market, as they utilized "a very special heat leaching epoxy filler". Come to find out there is ONE, and ONLY ONE epoxy that is considered a heat leach. Now, upon further extensive exploration, it was found that the ONLY heat leaching epoxy was only used in only one application on our Space Shuttle, and its cost was a staggering $100,000.00 PER OUNCE. So much for the affordable cost of that heat leaching epoxy supposedly used in caps on certain automotive products.
Since we know epoxy is a heat BARRIER, and not a heat leach, it cannot transfer heat away from a winding in a transformer, and only acts exactly like an epoxy carburetor heat shield/spacer. This excessive heat is the primary reason those transformers that use epoxy as a filling/media, FAIL from heat induced layer shorting, and, mostly, take other components out as they fail, from the electrical loading going bonkers on the other components to failure as well.
Now, we get to the part where I get called all sorts of names, and of being an 'idiot', etc. Ever feel/measure the outside temperature of both these types of transformers? The one that FEELS COOLER of the two, is actually HOTTER INSIDE, and is the epoxy filled transformer. The one that feels HOTTER outside, is actually cooling the windings better than the other media is. THAT IS MEASURED FACT. Then, there are those that insist they can't live without a coil that will withstand the vibration of a boulder crushing machine, because they believe the hype that they need one. Hey, if the vibration is that bad, find and fix the vibration source in the engine, on the vehicle, and, use a rubber mounting isolator to mount the oil filled coil, they are readily available, and...WORK.
That's the way it all actually works, folks.
Now, of course, we are not discussing power pole transformers, only things for our vehicles, that IF we mentioned the brand names for, others would get way, way too irritated, and ban us, because they felt we were 'vendor bashing', when it just plain never happened.
On a completely different subject, anyone ever see a rotor/carbon brush/cap burned at the center terminal of a GM distributor that has a transformer in the cap? Why did that happen? Well, two different things come to mind. Either wrong assembly of carbon brush causes gap between brush and rotor tip, creating over loading of the transformer, and excessive heat transferred down the brush/gap, and/or, a defective transformer not dissipating a 'layer short'. Simple as that.
End of explanation.
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