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SVTPerformance's Chain of Restaurants
The Blower Bistro
1 blower, 2 blowers. Let's Compaire.
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<blockquote data-quote="WDW MKR" data-source="post: 7144274" data-attributes="member: 8038"><p>Nice write-up. Only thing I'm confused about is the blower RPM and associated low flow you're limiting the calculations to; especially giving the twin blower arrangement an extra 4K RPM to work with. The twin screws are typically spun much harder than 11K without crossing the max threshold outlined by the manufacturer. KB and Whipple typically limit their twin screws to a conservative 18,000RPM. Many folks run them into the lower 20s with no issue. The biggest flow restriction for the large (2.8L/3.4L) PD blowers is getting an inlet large enough. The new KB Mammoth and the 3.4L revised inlet look to finally address the problem. Of course, they come at a cost. These PD blowers put out much more than 1200CFM when spun within their efficiency.</p><p></p><p>The 3.4L is getting ready to crack the 8s@150+ in an SRA/auto Cobra. That's blower-only, with no spray. Hard to argue with simplicity that works.</p></blockquote><p></p>
[QUOTE="WDW MKR, post: 7144274, member: 8038"] Nice write-up. Only thing I'm confused about is the blower RPM and associated low flow you're limiting the calculations to; especially giving the twin blower arrangement an extra 4K RPM to work with. The twin screws are typically spun much harder than 11K without crossing the max threshold outlined by the manufacturer. KB and Whipple typically limit their twin screws to a conservative 18,000RPM. Many folks run them into the lower 20s with no issue. The biggest flow restriction for the large (2.8L/3.4L) PD blowers is getting an inlet large enough. The new KB Mammoth and the 3.4L revised inlet look to finally address the problem. Of course, they come at a cost. These PD blowers put out much more than 1200CFM when spun within their efficiency. The 3.4L is getting ready to crack the 8s@150+ in an SRA/auto Cobra. That's blower-only, with no spray. Hard to argue with simplicity that works. [/QUOTE]
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SVTPerformance's Chain of Restaurants
The Blower Bistro
1 blower, 2 blowers. Let's Compaire.
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