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Functionista
Join Date: Jul 2011
Location: CO
Posts: 7,717
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Drill 2.4 MFI throttle body idle passage 3mm to 4mm?
A 2.4S tb idle passage measures 3mm and I need to know what might be gained or lost by enlarging them to 4mm on an engine built to RS spec. I believe the 4mm size info comes from Henry but I can't find a source for this info from Porsche.
Maybe with today's gas formulation it is moot? Anybody have any thoughts as to why a 4mm hole would be needed only on the RS spec engine? And I searched for a long time on this one....
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Jeff 74 911, #3 I do not disbelieve in anything. I start from the premise that everything is true until proved false. Everything is possible. |
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08-22-2016, 06:59 PM
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Registered
Join Date: Jan 2012
Posts: 1,244
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More air for the idle circuit in the larger displacement engine is my guess
I did something similar on my hot built MFI spica alfa motor |
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08-23-2016, 08:13 AM
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