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post #1 of 5 (permalink) Old 06-24-04, 09:28 PM Thread Starter
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Boss/Mod 5.4 needs this...

An article I've come across which deals with what I've been advocating in relation to continuously variable intake:

http://designnews.com/article/CA428036?nid=2335

According to BMW, the system boosts mid-range torque by 5 to 10%, which means, on our Boss/mod 5.4 engines it is worth upto 40 - 50Nms. Such a continuous system would do this consistently across the rev range, rather than being optimised for a certain point or two points.


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post #2 of 5 (permalink) Old 06-24-04, 10:16 PM
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Re: Boss/Mod 5.4 needs this...

A Boss 5.4 would certainly be good with this!

This way you can always have tuned length at any given rev range, low down power will benefit from the longer flow path and high end power will gain when the flow path is reduced

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post #3 of 5 (permalink) Old 06-25-04, 01:31 AM
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Re: Boss/Mod 5.4 needs this...

The Mazda KL series of V6 engines, as used in the Ford Probe, used what was termed VRIS ("Variable Resonance Intake System" I think). This used two butterfly valves to vary the flow of air through different tracts in the inlet manifold and effectively gave it three different length manifolds. A system like that should be easy enough to reproduce for the Boss.



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post #4 of 5 (permalink) Old 06-30-04, 03:13 AM
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Re: Boss/Mod 5.4 needs this...

Doesn't the Ford Racing 5.0l Cammer engine use a variable length magnesium inlet manifold. Not the same thing but would be useful for giving the Boss more low down torque.
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post #5 of 5 (permalink) Old 06-30-04, 03:19 AM
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Re: Boss/Mod 5.4 needs this...

Quote:
Originally Posted by bossxr8
Doesn't the Ford Racing 5.0l Cammer engine use a variable length magnesium inlet manifold. Not the same thing but would be useful for giving the Boss more low down torque.
Yes it does, as well as being a great engine too 435HP from factory

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