 Brake pressure regulator, early vs. late |
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| robkammer |
 Apr 23 2021, 05:14 AM
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#1
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Member  Group: Members Posts: 179 Joined: 7-January 21 From: Vermilion Ohio Member No.: 25,049 Region Association: North East States  |
Hello all, rebuilding the brake system on my new to me, as yet not driven BB is getting to be a much more difficult process than it should be.
The pressure regulator I've been supplied looks like it may be from an early model and my car is a 74. Is there a difference or are the two models different in some way? I've not yet held it up to the car but it looks like it will bolt right on. Any input would be appreciated. I'll post pics when I get to my shop this afternoon Thanks! Attached image(s) 
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| robkammer |
Apr 23 2021, 08:21 AM
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#2
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Member Group: Members Posts: 179 Joined: 7-January 21 From: Vermilion Ohio Member No.: 25,049 Region Association: North East States |
Thanks all, it turn out I was mis-remebering. The two are identical. Now it only has not to leak like the last one I had rebuilt.
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| bdstone914 |
Apr 23 2021, 03:13 PM
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#3
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bdstone914 Group: Members Posts: 4,543 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(robkammer @ Apr 23 2021, 07:21 AM)  Thanks all, it turn out I was mis-remebering. The two are identical. Now it only has not to leak like the last one I had rebuilt. @robkammer PET shows the different part numbers. I think they are not the same. I know one type is needed for 6 conversions to avoid an interferance problem. Attached thumbnail(s) 
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| mepstein |
Apr 23 2021, 03:46 PM
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#4
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914-6 GT in waiting Group: Members Posts: 19,325 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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QUOTE(bdstone914 @ Apr 23 2021, 05:13 PM) QUOTE(robkammer @ Apr 23 2021, 07:21 AM) Thanks all, it turn out I was mis-remebering. The two are identical. Now it only has not to leak like the last one I had rebuilt. @robkammer PET shows the different part numbers. I think they are not the same. I know one type is needed for 6 conversions to avoid an interferance problem. The 914-6 regulator is different than the 4. I think the internal spring has a slightly different rate. I think it's the routing on the early 914-4 that makes it easier to install a six mount. I didn't have to change mine on my 3.2 conversion. Might also be engine mount dependent. |
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Posts in this topic
robkammer Brake pressure regulator Apr 23 2021, 05:14 AM
IronHillRestorations I think they are all the same Apr 23 2021, 05:19 AM mepstein Just the brass fitting at the top is different. Apr 23 2021, 05:22 AM iankarr The early has two ports. Late has three. Or vice v... Apr 23 2021, 07:02 AM
Montreal914 For all your brakes need, contact Eric Shea at PMB... Apr 23 2021, 06:58 PM |
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