I'm just getting back into a couple of Spridget projects after taking a break. They are both Bugeyes that will have Sebring bonnets, wire wheels, disc brakes, and 1275 engine/gearboxes. I'm not a total novice, having built a '62 Midget racer and tinkering with these cars for nearly 30 years. I think I understand the need to 3/4" bore brake master cylinders and have sourced single action 3/4" wheel cylinders (as used on later Morris Minors), so I've got that sorted out. I'm somewhat confused by information on seeing on various websites offering tech advice and various vender offerings with regard to clutch hydraulics. As I understand it, the early drum brake 948 Spridgets with combined brake/clutch masters had 7/8" bores for both cylinders. Then when the disc brake 1098 cars came out, the bores in the brake/clutch masters both changed to 3/4". Here are my questions:
1) What was the bore of the slave cylinder on the 1098 cars? I'm only seeing 7/8" and 1" for sale.
2) Does a 3/4" clutch master work with a 7/8" or 1" bore slave cylinder?
3) When did the slave cylinder go from 7/8" to 1"?
4) Is it true that silicone fluid should not be used for clutch hydraulics? I read somewhere that the stroke of a clutch cylinder requires lubrication not present in silicone fluid.
Thanks in advance any advice you can provide!
1) What was the bore of the slave cylinder on the 1098 cars? I'm only seeing 7/8" and 1" for sale.
2) Does a 3/4" clutch master work with a 7/8" or 1" bore slave cylinder?
3) When did the slave cylinder go from 7/8" to 1"?
4) Is it true that silicone fluid should not be used for clutch hydraulics? I read somewhere that the stroke of a clutch cylinder requires lubrication not present in silicone fluid.
Thanks in advance any advice you can provide!