I already sent an inquiry to Indigo but thought I'd also check with the A4 community experts as well.
I purchased the Indigo kit and installed it last weekend, and it seems to work, although I havn’t tested it on a long engine run yet. However, there was one problem encountered during the installation. The spacer plate did not properly match up with either the carburetor flange or the inlet manifold. I tried to use the 2 replacement studs supplied with the kit but couldn’t get them both to fit due to an alignment problem of about a 1/16 inch difference between the carb, spacer plate and manifold (spacer plate is slightly smaller). When I ordered the kit I did indicate that I have an early model carburetor (cast iron with the ‘Zenith’ name running vertically down the main barrel, plus adjustable main jet) that someone before me installed on a late model engine (oil filler above the flywheel casing and on the manifold side). They also went to the trouble of installing the scavenge tube on this carb which runs from the bottom of the carb on the flame arrestor side, up to the inlet manifold. I’m wondering if there was a slight difference between flanges on both early and late carbs. Anyway, I temporarily fixed by using a smaller diameter nut and bolt instead of one of the supplied studs. I would obviously like to fix this by using both proper studs, any thoughts from anyone?
I purchased the Indigo kit and installed it last weekend, and it seems to work, although I havn’t tested it on a long engine run yet. However, there was one problem encountered during the installation. The spacer plate did not properly match up with either the carburetor flange or the inlet manifold. I tried to use the 2 replacement studs supplied with the kit but couldn’t get them both to fit due to an alignment problem of about a 1/16 inch difference between the carb, spacer plate and manifold (spacer plate is slightly smaller). When I ordered the kit I did indicate that I have an early model carburetor (cast iron with the ‘Zenith’ name running vertically down the main barrel, plus adjustable main jet) that someone before me installed on a late model engine (oil filler above the flywheel casing and on the manifold side). They also went to the trouble of installing the scavenge tube on this carb which runs from the bottom of the carb on the flame arrestor side, up to the inlet manifold. I’m wondering if there was a slight difference between flanges on both early and late carbs. Anyway, I temporarily fixed by using a smaller diameter nut and bolt instead of one of the supplied studs. I would obviously like to fix this by using both proper studs, any thoughts from anyone?
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