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10-13-2012
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#11 |
 Join Date: Aug 2006
Location: McLean, VA
Posts: 3,717
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
I wouldn't put keys on painted gas doors-especially on dark colored Z. That's how you end up with scratches.
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10-14-2012
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#12 |
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Join Date: Apr 2009
Location: Prather, CA
Posts: 804
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
What the heck are we talking about here? That circle thing with the number stamped on it? What is it?
 
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10-14-2012
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#13 |
 Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,542
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
Having never seen one, my guess is it is the butterfly out of the secondary air runner.
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10-14-2012
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#14 |
 Join Date: Aug 2005
Posts: 115
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
Yes - secondary throttle body butterfly plate. Removing them gives zero increase in performance, loss of 2-4 mpg.
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10-14-2012
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#15 |
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Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,542
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
Zero performance gain, simplified system. I'm ok with that. 2-4 mpg loss, that ain't great. Swollowing a screw (saw that here) also ain't great.
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10-14-2012
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#16 |
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Join Date: Sep 2011
Location: TN
Posts: 577
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
Theres gotsta be a way to screw , loc tite & weld the screws so they wonts comes loose. I really like the power and hate to give up 2-4 mpg especially when the fuel cost goes to $7.00 a gallon..
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10-15-2012
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#17 |
Join Date: Nov 2007
Location: San Diego Ca
Posts: 152
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
I LIKE THE RELIABILITY OF REMOVING THEM!
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10-15-2012
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#18 |
 Join Date: Feb 2011
Location: San Marcos CA
Posts: 1,786
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
I didn't realize you lost 2 mpg from a secondary-ectomy.
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10-15-2012
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#19 | |
 
Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,193
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
Quote:
I mean with all the weight reduction of all that complicated stuff under the V.  I still like the idea of better long term maintenance of things that follow the manual (where practical). And knowing that if necessary I could swap out the chip with a stock one when troubleshooting unrelated things. Not to mention being able to shut the valet key off should I allow anyone else to drive it. And then there's that question when a guest is in the car, "what's the Full Power" light mean?" 
__________________
Scott  Vett owner since 1979._It's about the car and the people |
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10-16-2012
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#20 | |
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Join Date: Aug 2005
Posts: 115
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Re: DOES ANY ONE ELSE HAVE ONE LIKE THIS
Quote:
The loss of economy comes from the swirl effect of a single runner feeding the cylinder (with the secondary closed that port feeds no air), allowing a more lean mixture yet still plenty of horsepower at steady cruise. Honda had a super efficient lean burn engine that employed cvcc technology "Compound Vortex Controlled Combustion" which is the same swirl effect. When that other secondary is opened all the time, this effect is lost, and some economy along with it. My 415 with big cams, big valves, max porting still delivers 26 mpg with 3.73 in the rear - secondaries are retained! |
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