 Variable length intake runners, interesting retrofit ???? |
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| toon1 |
 May 18 2015, 09:51 AM
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#1
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Senior Member  Group: Members Posts: 1,849 Joined: 29-October 05 From: tracy,ca Member No.: 5,022  |
A new intake plenum and runners have been on the "to do" list for a while now.
While doing some reading the specs. on the Cayman, I noticed "variable length intake system." Of course this got me thinking....." 914 retrofit!!!!". Anyone ever tried this? |
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| r_towle |
May 18 2015, 11:43 AM
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#2
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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why?
Without variable valve timing, does this buy anything? If so, what does it do for the motor? rich |
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| toon1 |
May 18 2015, 11:56 AM
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#3
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Senior Member Group: Members Posts: 1,849 Joined: 29-October 05 From: tracy,ca Member No.: 5,022 |
QUOTE(r_towle @ May 18 2015, 10:43 AM)  why? Without variable valve timing, does this buy anything? If so, what does it do for the motor? rich Longer runners create more torque on the low end. As the rpm increases, long intakes are not needed, and actually decrease performance. Short intakes are needed as the air velocity increases. It's how the intake air resonance works at low and high RPM's |
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Posts in this topic
toon1 Variable length intake runners May 18 2015, 09:51 AM
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