Manifold Upgrades @ A.S. Motorsport - Maserati Forum
 
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post #1 of 3 Old 02-21-2013, 10:02 AM Thread Starter
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Arrow Manifold Upgrades @ A.S. Motorsport

Hello everyone,

As a little side project I've made phenolic spacers.
These serve as thermal barriers shielding the cast aluminum intake manifolds from the hot cylinder heads.

The real life effects on a graph:

test conducted by hondata on a inline engine.

Quick summary of the effect:
Quote:
Fact: For every 3.3 C (5 F) rise in intake temperature, air density drops 1%. The hotter the air, the less fuel the computer injects to compensate for reduced oxygen. Datalogging software has enabled us to measure intake air temperature under varied driving conditions.

Around town, testing has shown an average drop of around 10 degrees C which is good for around 3 percent power increase.
NOTE: this testing was conducted on a inline engine, a V engine has added heat due to the manifolds being in-between two cylinder banks
10 degrees C drop = 3% power increase

We have these thermal spacer kits ready for machining:
Maserati BiTurbo - $125 - 95
Maserati 4200GT & Quattroporte (4.2) - $155 - 120


Available on request:
Ferrari V8 (Dino & F/M)
Ferrari V12
Other sports cars, please contact us

Kit includes the spacer plates and gaskets.

Example

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post #2 of 3 Old 02-21-2013, 08:36 PM
 
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u have pm

gs mcv#128
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post #3 of 3 Old 03-28-2013, 10:10 AM Thread Starter
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More detailed information, including test results available here:
Intake manifold upgrade kit

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