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SVTPerformance's Chain of Restaurants
Tuning À la carte
FR500 Intake Manifold
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<blockquote data-quote="old01cobra" data-source="post: 16289460" data-attributes="member: 141196"><p>I ended up deleting the flaps. They’re pretty much useless as they become a restriction above 3500 rpm and the little bit they helped wasn’t worth it for the loss they caused from 3500 up. The intake when you look at the dyno naturally flows the long and short runners. You can see a dip when the airflow switches it’s weird.</p><p></p><p>There are little bearings in the front by the linkage on the shaft if I remember correctly when I pulled them. I don’t ever recall seeing anything in the back part it’s just rods that pull straight out when you take all the butterflies out. I’m not really sure how it could rattle with the cause being from the actual intake as the butterflies pretty much hold it in and they have no physical stop it’s like the throttle body. The machined parts the rods pass through for each cylinder would need to be worn unless the butterflies are loose.</p><p></p><p>If the cables going too the actuating motor has slack that hold them shut that could cause a rattle.</p></blockquote><p></p>
[QUOTE="old01cobra, post: 16289460, member: 141196"] I ended up deleting the flaps. They’re pretty much useless as they become a restriction above 3500 rpm and the little bit they helped wasn’t worth it for the loss they caused from 3500 up. The intake when you look at the dyno naturally flows the long and short runners. You can see a dip when the airflow switches it’s weird. There are little bearings in the front by the linkage on the shaft if I remember correctly when I pulled them. I don’t ever recall seeing anything in the back part it’s just rods that pull straight out when you take all the butterflies out. I’m not really sure how it could rattle with the cause being from the actual intake as the butterflies pretty much hold it in and they have no physical stop it’s like the throttle body. The machined parts the rods pass through for each cylinder would need to be worn unless the butterflies are loose. If the cables going too the actuating motor has slack that hold them shut that could cause a rattle. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
FR500 Intake Manifold
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