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510 m/c to 521


sdsurf

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Back in the mid '70s I put a dual on my Datsun. Now that I think about it, it might have been my 68 510 and not my 521. They are so similar. Anyway it originally was a single m/c. The dual came out of a 620 (I think) and bolted right in. All I had to do was separate the front from the back system.

 

The one problem was the flared line ends did match the m/c fittings. The car ones were bubble and the m/c was reverse flare. I can't believe I did this but I used a file to re-shape them so they fit and sealed without leaking. Unknown to me, at the time, the m/c was from a '78 with front discs so everything worked OK.

 

If it fits the firewall you should be able to make it work. The push rod is adjustable? Only concern is the flare, maybe. It worked fine, no difference in braking, but It was a lot safer with two separate brake systems on the car.

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