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Metco Lower Install
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<blockquote data-quote="Dana" data-source="post: 310698" data-attributes="member: 4521"><p>Doing the lower and leaving the upper at the stock size greatly reduces or eliminates the slippage common to installs that use a smaller upper pulley. A smaller upper pulley will slip sooner than a stock size one. The down side is that the accessories driven by the lower spin faster too.</p><p></p><p>Many people went with the smaller size upper because it was the first thing available, easily installed and much less expensive than the lower kits, when they did finally arrive on the scene. As for why some are using both upper and lower, I can only speak for myself. I initially had a 3.0 inch upper, but felt more boost was possible than the approximately 12 #'s I was getting. Not wanting to go any smaller on the upper, as slippage was definitely becoming as issue, I opted to go the lower route for the additional increase. Since then, larger (100mm) idler kits and even added idler kits, have been introduced that decrease the amount of slippage with the smaller upper pulleys.</p><p>Do a little research and reading before making a decision. Installing the smaller upper isn't a big deal and there are kits available that will allow you to interchage various sizes at will. A similiar concept exists for the lowers too.</p><p>As with almost everything else on this model car, it is a matter of experimenting to find what works for you.</p><p>Dana</p></blockquote><p></p>
[QUOTE="Dana, post: 310698, member: 4521"] Doing the lower and leaving the upper at the stock size greatly reduces or eliminates the slippage common to installs that use a smaller upper pulley. A smaller upper pulley will slip sooner than a stock size one. The down side is that the accessories driven by the lower spin faster too. Many people went with the smaller size upper because it was the first thing available, easily installed and much less expensive than the lower kits, when they did finally arrive on the scene. As for why some are using both upper and lower, I can only speak for myself. I initially had a 3.0 inch upper, but felt more boost was possible than the approximately 12 #'s I was getting. Not wanting to go any smaller on the upper, as slippage was definitely becoming as issue, I opted to go the lower route for the additional increase. Since then, larger (100mm) idler kits and even added idler kits, have been introduced that decrease the amount of slippage with the smaller upper pulleys. Do a little research and reading before making a decision. Installing the smaller upper isn't a big deal and there are kits available that will allow you to interchage various sizes at will. A similiar concept exists for the lowers too. As with almost everything else on this model car, it is a matter of experimenting to find what works for you. Dana [/QUOTE]
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