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Registered
Join Date: Sep 2009
Location: Germany
Posts: 124
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40IDA - 37mm venturis?
Hi,
Does anybody here has some experience on opening the largest available 36mm venturis for the 40IDAs up to 37mm? Would the airflow in the carb still work properly or will the 36mm venturis be the maximum for the 40mm throttle butterfly? Cheers, Christian |
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10-18-2009, 01:31 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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PMO makes 38's and we've used them, however 36's are the optimal size for 40mm carbs regarding drivability, torque & throttle response. The bigger venturies take more away in the mid-range than you get back on top.
I don't think anything would be gained by machining 36's to 37mm and you'd need a CNC mill or lathe to do this properly.
__________________
Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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10-18-2009, 02:42 PM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,470
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that would certainly diminish the venturi principle.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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10-18-2009, 02:44 PM
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