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Bringing the 4lb Caged lower back from the Dead?
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<blockquote data-quote="67351stang" data-source="post: 15505912" data-attributes="member: 47170"><p>428CJ - I hear you. In summary, aftermarket parts have little or no warranty, and, money & time are at the roots of most things evil.</p><p></p><p>You developed this on the fly, and did refuse to ship them out (or make a much larger batch) until you had some confidence in them by using and abusing (working it hard) the pulley, basically design feedback from the field. There have been a few minor hiccups, but not bad. A few damper bushings were short-lived/too soft for the specific app, and a few total part assembly or vehicle assembly issues. Many people were rebuilding their pulley cage for the first time, so mistakes are most likely to happen the first time, or after a million times. Go with a Metco (un-damped, under-supported pulley) and hard stop solid idler tightened until the drive belt's eyes water, and it could very well destroy most of the engine, a risk most people (the majority) are not willing to take. It has also been argued a few completely stock cobras broke crank snouts - a few out of 19,100 03-04's. Metco has claimed to sell thousands of Cobra crank pulley kits, and several have had serious issue (destroy entire engine) and many have had some issue (bolts coming loose, maybe then break engine), belt slip issues, because pulley is no longer damped, then they tighten the shit out of the belt, then if your lucky, the tension just accelerates the wear of the bearings (idlers, blower, mains, alternator) and reduces the belt slip and life, of course. It sounds like the Metco has a higher risk of failure, or at least opens up a whole other can of worms to say the least. When it comes right down to it, the OEM's don't do anything unless they have to, I'm sure SVT felt they had to have a crank support. They did not do it just for the fun of it, and that was when it was making 390/390 with 8-10 psi boost, turning the eaton 13,021 rpm at 6250 engine rev limiter. There's a whole team of engineers at the OEM level that just work on the FEAD in ford speak (Front Engine Accessory Drive).</p><p></p><p>At any rate, since you say you are done, best case, would you give up your suppliers contact info, part numbers (if any). This way, your work would not be wasted for the people that still want or need a caged lower. We will promise to pursue this job at our own risk. If you are not willing to give up suppliers, can you give part numbers, dimensional details, tolerances, part material, maybe a CAD file for the pulley? Some of the more basic info could be pieced together from the last 26 pages on this post, but there's plenty more to tell. I wish Metco would make this. Would that offend you? I see Innovators West makes the Cobra crank damper both ways, it would only make sense to make the pulley both ways at this point. They could have several new products to sell, and sell they would. The crank pulley (with a few sizes they offer), the properly sized idler, the crank pulley rotational stop, a selection of tune-able damper bushings based on hardness and feedback from the field. I'm sure some of the people that already had the solid Metco setup would sell it, and Metco could sell another pulley kit to an existing/previous customer too, for about the same price as their current Cobra crank kit sells for, and make plenty of money doing it. Don't we know money is the root of most things evil? If Metco doesn't chime in to this post already, by me typing Metco 10 times, all the SVT owners that want this need to politely tell them to get their head out of their ass about this issue and their current design and start making aluminum chips. Then, there would be no reason not to buy a crank pulley kit. They do make good parts.</p><p></p><p>Damn, I just about blew a gasket about this issue already, and just now ran across this....</p><p></p><p><a href="https://www.svtperformance.com/forums/threads/crank-snapped-at-pulley.1130584/" target="_blank">https://www.svtperformance.com/forums/threads/crank-snapped-at-pulley.1130584/</a></p></blockquote><p></p>
[QUOTE="67351stang, post: 15505912, member: 47170"] 428CJ - I hear you. In summary, aftermarket parts have little or no warranty, and, money & time are at the roots of most things evil. You developed this on the fly, and did refuse to ship them out (or make a much larger batch) until you had some confidence in them by using and abusing (working it hard) the pulley, basically design feedback from the field. There have been a few minor hiccups, but not bad. A few damper bushings were short-lived/too soft for the specific app, and a few total part assembly or vehicle assembly issues. Many people were rebuilding their pulley cage for the first time, so mistakes are most likely to happen the first time, or after a million times. Go with a Metco (un-damped, under-supported pulley) and hard stop solid idler tightened until the drive belt's eyes water, and it could very well destroy most of the engine, a risk most people (the majority) are not willing to take. It has also been argued a few completely stock cobras broke crank snouts - a few out of 19,100 03-04's. Metco has claimed to sell thousands of Cobra crank pulley kits, and several have had serious issue (destroy entire engine) and many have had some issue (bolts coming loose, maybe then break engine), belt slip issues, because pulley is no longer damped, then they tighten the shit out of the belt, then if your lucky, the tension just accelerates the wear of the bearings (idlers, blower, mains, alternator) and reduces the belt slip and life, of course. It sounds like the Metco has a higher risk of failure, or at least opens up a whole other can of worms to say the least. When it comes right down to it, the OEM's don't do anything unless they have to, I'm sure SVT felt they had to have a crank support. They did not do it just for the fun of it, and that was when it was making 390/390 with 8-10 psi boost, turning the eaton 13,021 rpm at 6250 engine rev limiter. There's a whole team of engineers at the OEM level that just work on the FEAD in ford speak (Front Engine Accessory Drive). At any rate, since you say you are done, best case, would you give up your suppliers contact info, part numbers (if any). This way, your work would not be wasted for the people that still want or need a caged lower. We will promise to pursue this job at our own risk. If you are not willing to give up suppliers, can you give part numbers, dimensional details, tolerances, part material, maybe a CAD file for the pulley? Some of the more basic info could be pieced together from the last 26 pages on this post, but there's plenty more to tell. I wish Metco would make this. Would that offend you? I see Innovators West makes the Cobra crank damper both ways, it would only make sense to make the pulley both ways at this point. They could have several new products to sell, and sell they would. The crank pulley (with a few sizes they offer), the properly sized idler, the crank pulley rotational stop, a selection of tune-able damper bushings based on hardness and feedback from the field. I'm sure some of the people that already had the solid Metco setup would sell it, and Metco could sell another pulley kit to an existing/previous customer too, for about the same price as their current Cobra crank kit sells for, and make plenty of money doing it. Don't we know money is the root of most things evil? If Metco doesn't chime in to this post already, by me typing Metco 10 times, all the SVT owners that want this need to politely tell them to get their head out of their ass about this issue and their current design and start making aluminum chips. Then, there would be no reason not to buy a crank pulley kit. They do make good parts. Damn, I just about blew a gasket about this issue already, and just now ran across this.... [URL]https://www.svtperformance.com/forums/threads/crank-snapped-at-pulley.1130584/[/URL] [/QUOTE]
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Bringing the 4lb Caged lower back from the Dead?
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