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Brake System Flush Question 140-160

What I am trying to do at this early stage is just clean oout the systems on these two 1970's I bought. the sedan had no fluid and the wagon some old stuff. Both had bad m/c's.

I just installed a rebuilt m/c from Rockauto.com. About $40 and no core return. Looks about as good and any new one I've ever found. It even came with plastic line plugs and tubing so you can bench bleed it. But the plugs won't screw into the circuit outlets, so, I needed to rob some hard line and nuts off a combination valve in my spares collection.

I was going to buy a rebuilt kit from VLVworld, but the #30 price plus shipping makes it pointless wen I can just buy already rebuilt.

The calipers (eight of 'em!) I just figure I need to rebuild anyway. On the wagon the brake lines all need to come off once I get around to replacing the unibody.

Short term I wanted to test the brake servos on these, but needed the m/c before beginning. Then I'll flush the lines with them disconnected at each caliper (using a power bleeder, not the new m/c). That;s why I was in quiring about the denatured alcohol.

So, when you converted to DOT 5, did you need to do any special flushing?

I understand folks switch to the DOT 5 because it doesn't absorbe moisture as much ad DOT 3/4 and that's why people use it for little driven classics. Did you notice any loss or improvement in the braking performance with it?






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