The Zenith carb model 14998 has been used on tens of thousands of farm 
tractors and industrial engines.  Zenith carbs and repair parts and kits are 
only sold through retail dealers.  Prices vary.  The model 14998 is an 
updraft carb with a side draft air entrance.  This carb will not function 
properly with negative g operations due to having a float bowl.  The factory 
supplied float valve pin, idle jet seal and main jet seal will not tolerate 
ethanol fuels.  100LL and ethanol-free fuels work fine.   There are 
aftermarket kits available that replace the seals with ethanol tolerant 
seals.  I do not know what the rubber seal material is made of.  The main 
jet is adjustable for mixture control, but tends to leak around the shaft if 
the gland nut is not securely tightened after the mixture is adjusted.  With 
the gland nut tight, the mixture cannot be adjusted.  The model 14998 is a 
good size match for the 2180 cc VW that I am using.  I paid $286 for this 
carb from Great Plains Aircraft; the GP website now quotes $387.  There are 
other carbs specifically made for  aircraft operations; prices vary.

Sid Wood
Tri-gear KR-2 N6242
Mechanicsville, MD, USA
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Is that a side draft carb ? And for which engine ? Virg



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