Rebuilt to stock gear ratio’s 60A 5 sp from ‘82 210. Tire 155 80 13(stock)
Other notes:
Have a couple of 63A's I am rebuilding but never road tested (the 63A was the original 5sp option for the B210)
Currently running 175 70 13's with a little decrease in MPG (45-50 no extra weight) as long as I keep at 75mph or below. If I hit 80mph my mpg immediately goes to @#$%.With original 60 series 4sp I would get comparable mpg at 55mph or below. In short, if I am not getting 40+ mpg something is wrong.
Gear ratio= 37/10
Deburred and port matched H72 head and H72 intake.
Significant weight removed from car = cast iron exhaust and complete AC system.
I rebuilt my A14 engine with cheap free power and volumetric efficiency (close matching stock bore and stroke help this and why engine size was only increased to 1407cc, camshaft, and crank stock)in mind so I concentrated on breathing and exhaling. I am probably a little obsessive with my tune-ups,check valve clearance every other oil change(6000mi),change out and index spark plugs(gap=.051) every 6 mons. I am a firm believer in a strong ignition system.
For the environmentalist:
Really all I cared about was fuel, air and fire, and ironically after this I have additional horse power/TQ (never measured, but I know its there, maybe high 80’s hp?)and the engine burns cleaner then when it was stock this was measured as I kept all my smog test records(required until a car is 25yr old in GA USA) and took a smog test just to see how my engine was burning-all emissions were below all readings in all categories for my last 5 smog tests.