I have a 1986 Mazda B2000 and an '87 B2200. Both trucks have been modified with Weber 2bbl carbs and header exhaust. The '86 had approx. 120k on the engine when mods made. Mileage went up to 27-30 mpg at 70mph and top speed to 97 mph. '87 truck had mods made when engine was rebuilt. With 20k on new engine, mileage remains around 23 mpg. Top end is about 83 mph, and truck will not surpass 4k rpm in 5th gear. Why such a difference? Annoying as the '87 is the one I've sunk the restoration money into.
Also, any Mazda B-series clubs out there?
have the same problem?
Sunday, February 18th, 2007 AT 7:36 PM