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brake drum interchange


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  DaveT said:
I've read that Loyales have the valve already.

I guess I should re-phrase that. I understand disc/drum systems require different front-rear proportioning than disc/disc. So should one get the correct valve from the turbo car when doing the swap?

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Apologies to all. I should have read the rear disc swap thread right under my last post, which covered the prop valve pretty well, although it still isn't clear as to whether a Loyale disc/drum has the same valve as a disc/disc. I believe I'll ask my new best friend at the nearest Soob dealer to compare part numbers.;)

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It's my understanding proportioning valves are only used with rear servo type drum brakes. Loyals use non-servo brakes so there shouldn't be any proportioning valves on them.

 

Non-servo type brakes do not have the stopping power that servo type has. When the automobile manufacturers started installing disk brakes on the front, with the servo-type rear brakes, they used proportioning valves to keep the rear brakes from locking up prematurely. Later, the manufacturers redisigned the rear brakes to non-servos so they could eliminate the proportioning valve.

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