A day after I talk with the rockauto.com representative, I recieve my Wagner 7/8" bore 1978 Chevrolet Malibu manual brake master cylinder in the mail.
See something wrong with this picture? Reservior is on backwards. I will turn it around before i bench bleed it.
Made in the Good Ol' U. S. of A.
7/8" bore master cylinder piston with the pushrod "dimple"
I pushed in the piston with a brake pedal pushrod I had laying around. Travel was a little over an inch.
Weight of Cast Iron 7/8" Manual Brake Master Cylinder
3 lbs 5 1/8 ounce
Weight of Aluminum Step Bore S-10 Master (24mm / 1 1/4" step bore)
2 lbs 8 1/4 ounce - difference of 12 7/8 ounces or a little over 3/4 lbs over the cast iron unit
Weight of an Aluminum Mopar / Strange style master cylinder
2 lbs 2 3/4 ounce - difference of 1 lb 2 3/8 ounces over the cast iron unit
I need to grind down some of the casting flash and shoot is with some aluminum color or black paint to keep it looking fresh and not like a peice of rust after about a year.