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Original Message
4100 CFM test
By Bob - 12/10/2001 12:35:51 AM; IP 65.80.202.164
I've gotten tried of all of the arguments about the CFM capacity of the Autolite 4100s. Last week I took five of them in a local speed shop and put them on Superflow 1020 flow bench, one with the small 1.08 primary venturi and the rest with the larger 1.12 primary venturi. The small one flowed 441 CFM, the larger ones flowed 503 to 528 averaging 520.

These results were very close to what I expected for the 1.08 but 50 CFM higher for the 1.12. Still the 1.12 does not flow 600 CFM as claimed by some vendors.

The testing was done at Charlie's Automotive in Apex, NC. They are an engine builder for the local NASCAR guys. The tests were done a Superflow 1020 flow bench which is computerized and automatically corrects the output data to standard temperature and pressure.

Type or No. Primary , , Primary , , Scndry , , Scndry , , CFM test
Tag or ID , , Venturi , , , Bore , , , , Venturi , , Bore , , , , Results
C6AF-E , , , ,1.08 , , , , , 1.437 , , , , 1.18 , , , , 1.437 , , , , 441
EDT 84D , , 1.12 , , , , , 1.562 , , , , 1.18 , , , , 1.562 , , , , 503
EDT-17BR, 1.12 , , , , , 1.562 , , , , 1.18 , , , , 1.562 , , , , 523
C4SF-B, , , ,1.12 , , , , , 1.562 , , , , 1.18,, , , , 1.562 , , , , 526
C4AF-DG, , 1.12 , , , , , 1.562 , , , , 1.18 , , , , 1.562 , , , , 528

These less than 5% variation between the average for the 1.12 models is within normal manufacturing tolerances.

This thread, so far...
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Collapse <b>4100 CFM test</b>&nbsp;-- <font color=#0000ff>Bob, <i>12/10/2001</i></font>4100 CFM test -- Bob, 12/10/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9935&Reply=9927><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9935" onclick="return false;">RE: very interesting</a>&nbsp;-- <font color=#0000ff>Mike McQuesten, <i>12/10/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9935', contentMargin: 60, icon: $('anchor9935') }); </script>  RE: very interesting -- Mike McQuesten, 12/10/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9936&Reply=9927><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9936" onclick="return false;">RE: very interesting</a>&nbsp;-- <font color=#0000ff>Bob, <i>12/10/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9936', contentMargin: 60, icon: $('anchor9936') }); </script>  RE: very interesting -- Bob, 12/10/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9947&Reply=9927><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9947" onclick="return false;">RE: great running 7 Litre!</a>&nbsp;-- <font color=#0000ff>Mike McQuesten, <i>12/10/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9947', contentMargin: 60, icon: $('anchor9947') }); </script>  RE: great running 7 Litre! -- Mike McQuesten, 12/10/2001
 RE: great running 7 Litre! -- Bob, 12/11/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9954&Reply=9927><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9954" onclick="return false;">Excelent info, Bob. Thanks for the effort :-)[n/m]</a>&nbsp;-- <font color=#0000ff>Mr F, <i>12/11/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9954', contentMargin: 60, icon: $('anchor9954') }); </script>  Excelent info, Bob. Thanks for the effort :-)[n/m] -- Mr F, 12/11/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9959&Reply=9927><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9959" onclick="return false;">RE: Excelent info, Bob. Thanks for the effort :-)[n/m]</a>&nbsp;-- <font color=#0000ff>Bob, <i>12/11/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9959', contentMargin: 60, icon: $('anchor9959') }); </script>  RE: Excelent info, Bob. Thanks for the effort :-)[n/m] -- Bob, 12/11/2001
 Move? After my HD crash, I'm lucky to post.[n/m] -- Mr F, 12/11/2001
 RE: Excelent info, Bob. Thanks for the effort :-)[n/m] -- Bob, 12/11/2001
 Nice work, ever do anything with Weber DCOE carbs? -- P, 12/11/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9976&Reply=9927><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9976" onclick="return false;">At what inches of mercury did you test? n/m</a>&nbsp;-- <font color=#0000ff>Styletone58, <i>12/11/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9976', contentMargin: 60, icon: $('anchor9976') }); </script>  At what inches of mercury did you test? n/m -- Styletone58, 12/11/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9978&Reply=9927><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9978" onclick="return false;">RE: At what inches of mercury did you test? n/m</a>&nbsp;-- <font color=#0000ff>Bob, <i>12/11/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9978', contentMargin: 60, icon: $('anchor9978') }); </script>  RE: At what inches of mercury did you test? n/m -- Bob, 12/11/2001
Collapse <a href=../ForumFE/reply.aspx?ID=10012&Reply=9927><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10012" onclick="return false;">So, these are REAL numbers. Cool! n/m</a>&nbsp;-- <font color=#0000ff>Styletone58, <i>12/13/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10012', contentMargin: 60, icon: $('anchor10012') }); </script>  So, these are REAL numbers. Cool! n/m -- Styletone58, 12/13/2001
 RE: So, these are REAL numbers. Cool! n/m -- Bob, 12/13/2001
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