
10-29-2008, 02:30 PM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,797
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Not Ranked
I have polished every Weber venturi I have purchased over the last 25 years.
DCD, DCOE and IDF, they all polish up like a mirror with minimal metal removal.
41.5 is a about 7.5% larger than 40 in cross sectional area.
You can only try your 41.5s and see what happens. 
__________________
Gary
Gold Certified Holden Technician
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