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Old 04-11-2010, 02:07 PM   #1
Dave_Obsession
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Default Manifold Insulator for AU 4.0 engine

Has anybody got one of these?
I remember reading up about these a while ago, but just saw it again and it's got me thinking....

Supposed to help increase fuel economy, power & torque by lowering the air temp in the engine?

Would be interested to hear everybody's thoughts on this...
$130 for the insulator plus $15 shipping Australia-wide ($12 shipping in Victoria)

http://www.maceengineering.com.au/ep...Products/MI604
Quote:
* Produces a cooler intake and intake manifold charge resulting in more power.
* A cooler intake charge also reduces the tendency for detonation, meaning more ignition timing or boost for more power!
* Improve low end torque by increasing runner length
* Better fuel economy
* Reusable over and over again.
* No undesirable side effects
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Old 04-11-2010, 10:43 PM   #2
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i put the top and bottom in an ecotec engine and was suprised to find a noticable increase power and torque. Wasnt a jaw dropping increase like the site makes it out to be but you definatly did notice it. So when i can cbf'd changng my inlet manifold gasket i will def put them in
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Old 07-11-2010, 08:18 PM   #3
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Seriously nobody else knows anything of them??

I may have to take the plunge...
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Old 07-11-2010, 08:57 PM   #4
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Known as a phenolic spacer - quite often fitted to Windsors (I have one on mine), and they tend to help ease heat soak from engine to inlet manifold. I doubt they'd result in everything that's claimed, but for the price, it can't hurt.
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Old 07-11-2010, 09:31 PM   #5
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Cheers JC - I've heard of a phenolic spacer, didn't realise it was the same thing!!
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Old 08-11-2010, 04:27 PM   #6
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Im doing it soon, so let me know how you go. On there site there are top and bottom insulators. I want both.
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Old 08-11-2010, 04:51 PM   #7
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Quote:
Originally Posted by The Monty
Im doing it soon, so let me know how you go. On there site there are top and bottom insulators. I want both.
Could only find the 'top' insulator for the AU??
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Old 08-11-2010, 08:53 PM   #8
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http://www.maceengineering.com.au/ep...Products/MI606
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Old 09-11-2010, 06:53 PM   #9
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You've got this huge volume of air rushing in, and its going to get hot and expand from being in a hot manifold for a millisecond or two? Maybe.....
I wonder how often the small performance increase comes from replacing a worn out leaking inlet manifold gasket?
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