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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Suspension Discussion and Modification
3.0 vs. 3.5 secondary bypass?
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<blockquote data-quote="letsgetthisdone" data-source="post: 1927087" data-attributes="member: 32303"><p>Leaf springs generally cycle less than the shock unless its a 64" leaf pack with the hangers relocated. Especially if you put an extended shackle on and don't relocate the rear hanger.</p><p></p><p>"Leverage" (what you mean is motion ratio) slows down the shaft speed. Doesn't mean the shock works harder. Just means the valving is different. The shock does have to generate more force, but it's also dealing with lower shaft speeds, so there's a trade off in heat generation.</p><p></p><p>The are of the stock 3.0 (really a 2.5" piston) and the 3.0 bypass is 12sq-in. The 3.5 in the back is an area of 9.62. So the 3.0/3.0 up front still has 25% more potential damping force than the 3.5 in the back. And then when you factor the stock 3.0 has valve on the port to reservoir to convert the shaft oil displacement to damping force, its more like about 30% more available damping up front.</p><p></p><p>It's OP's money, but I wouldn't spend the extra $1200.</p></blockquote><p></p>
[QUOTE="letsgetthisdone, post: 1927087, member: 32303"] Leaf springs generally cycle less than the shock unless its a 64" leaf pack with the hangers relocated. Especially if you put an extended shackle on and don't relocate the rear hanger. "Leverage" (what you mean is motion ratio) slows down the shaft speed. Doesn't mean the shock works harder. Just means the valving is different. The shock does have to generate more force, but it's also dealing with lower shaft speeds, so there's a trade off in heat generation. The are of the stock 3.0 (really a 2.5" piston) and the 3.0 bypass is 12sq-in. The 3.5 in the back is an area of 9.62. So the 3.0/3.0 up front still has 25% more potential damping force than the 3.5 in the back. And then when you factor the stock 3.0 has valve on the port to reservoir to convert the shaft oil displacement to damping force, its more like about 30% more available damping up front. It's OP's money, but I wouldn't spend the extra $1200. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Suspension Discussion and Modification
3.0 vs. 3.5 secondary bypass?
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