Concentric carbs

Post by **Prof** » Thu Aug 24, 2006 12:24 am

Concentric carbies are fastened to manifolds using rubber washers. These compress after a while and can result in air leaks.

Replace manifold "o" rings with gaskets, leave out rubber washers and add extra steel washers to space nuts out from steps in bolts.

Check slides to make sure they aren't binding. If one does, ease off tension on maniflod bolts until it is free.

Chucky · Post by **Chucky** » Thu Nov 05, 2009 9:45 am

make sure when doing this that you have the heat insulation washers in place as well as the O rings or you will get too much heat transfer from the head to the carbie.