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New Edge Cobras
Here's some advice. I had to learn the hard way.
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<blockquote data-quote="98 N/A 4V" data-source="post: 8233339" data-attributes="member: 21512"><p>If you keep your rpms under 7k the stock pump will work fine as long as you have the stock dampner on it. </p><p></p><p>The bad rep MMR got on their pumps is that the street pumps were nothing more than cryo treated stock cast gears (stupid idea IMO). So high rpms they vibrated and broke. </p><p></p><p>Keep in mind that since your oil pump gears are now bullet that they are indeed stronger. However, that means that they are also more rigid against your stock forged crank. Over time can start to chew up the crank. But again I think if you limit the rpms like I said, you'll be fine. </p><p></p><p>But also going by the sheer numbers of MMR shortblocks out there in cars vs the number of issues I think you'll be fine with it. 1 person has a bad experience they tell 10 people. 1 person has a good experience the tells 1 person. </p><p></p><p>-Mark</p></blockquote><p></p>
[QUOTE="98 N/A 4V, post: 8233339, member: 21512"] If you keep your rpms under 7k the stock pump will work fine as long as you have the stock dampner on it. The bad rep MMR got on their pumps is that the street pumps were nothing more than cryo treated stock cast gears (stupid idea IMO). So high rpms they vibrated and broke. Keep in mind that since your oil pump gears are now bullet that they are indeed stronger. However, that means that they are also more rigid against your stock forged crank. Over time can start to chew up the crank. But again I think if you limit the rpms like I said, you'll be fine. But also going by the sheer numbers of MMR shortblocks out there in cars vs the number of issues I think you'll be fine with it. 1 person has a bad experience they tell 10 people. 1 person has a good experience the tells 1 person. -Mark [/QUOTE]
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Here's some advice. I had to learn the hard way.
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