Well... It was raining and I couldn't work on the underside of the body so I decided to recondition the calipers removed from the existing MGF subframe...
first job was to strip them down, it doesn't take to long to lay out the various components,
Then I start grinding with various wire brushes, I also used a stone wheel to remove the casting marks, just to smarted them up. Once both sets of casting were cleaned up, they had an hour in the dish washer to get the dirt residue out of all the nooks and crannies,
An hour in the dish washer warms up the castings nicely for a coat of primer paint and once dry, the first of 3 coats of VHT gloss red paint, and 30mins in the oven at 50oC (fan assisted)
In the meantime, I ordered a new rubber seal kit, bleed nipples and bolts from the www which arrived the next morning...
So, I start the rebuild,
The above 2 pictures show the inner square section seal and the outer bellow seal with a liberal coating of red grease,
The above picture shows the piston in place. To fit the piston, I firstly coated the sliding surface with silicone grease, held it in place against the bellow rubber seal and used compressed air through the brake pipe connection to blow the bellows over the piston and allowed the rubber bellow seal to seat itself into the groove around the piston.
The above 2 pictures shows the sliders in place with the new seals
The finished product! I'm really pleased with the final look, they may not be 4 pots but they will look good with the new subframe... The cost; Rubber seal kit for 2 calipers £11.99, 4 bleed nipples £4.99, new set of bolts £8.00 and paint, £14.00. The whole job took about 10 hours including drying time and well worth it.
Regards
Simon