 Brake pressure regulators, Difference between /4 and /6? |
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| zoomCat |
 Feb 12 2022, 12:24 PM
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Member  Group: Members Posts: 162 Joined: 13-August 04 From: Cincinnati, OH Member No.: 2,526 Region Association: None 
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There are different part numbers for the pressure regulators on the 4 and 6. Anybody know what the difference is?
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| Superhawk996 |
Feb 12 2022, 01:44 PM
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#2
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914 Guru Group: Members Posts: 5,900 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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The difference is in the set point at which the "regulator" begins to proportion rear brake pressure.
914/6 has a lower pressure knee point due to larger rear caliper pistons 38mm vs. smaller 33mm pistons for /4.  I belive PMB can reset a /4 regulator to the /6 set point if need be. There are also two types (early & late) for /4's where the inlet and outlet ports changed location to accomodate different mounting locations between early and late. If you were going to try to obtain and use a /4 regulator for a /6, you would want the early version. |
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Posts in this topic
zoomCat Brake pressure regulators Feb 12 2022, 12:24 PM
mlindner Wow Superhawk996 that is great info again. This is... Feb 12 2022, 03:30 PM partwerks Is this that part that is mounted in the engine ba... Feb 12 2022, 07:57 PM
mepstein
Is this that part that is mounted in the engine b... Feb 12 2022, 08:16 PM zoomCat The previous owner had changed out the pressure re... Feb 13 2022, 08:54 AM mepstein
The previous owner had changed out the pressure r... Feb 13 2022, 09:12 AM |
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