MGB & GT Forum
75 or 76 MGB
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 Wolverine Lake, MI, USA
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Mar 31, 2015 07:04 PM
Top Contributor
 Joined 19 years ago
15,075 Posts
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Based on your VIN, your car was built between Jan/75 and Sep/75. First car (roadster) for the 1975 calendar year was 368090. First car for the '76 model year was 386601.
You can add the later brake booster to your non-boosted car but you'll need the entire pedal box assembly from a later car and have to modify the shelf where the pedal box attaches. I went the opposite route by installing a dual-circuit, non-boosted brake system in a '77 B shell that I also added a Rover V8 into. In my case, I had to drill a couple of new holes to attach the box cover but otherwise, it was a relatively easy swap. I also redesigned the brake line circuits to eliminate the PDWA (pressure differential warning assembly).
"Speed costs........how fast you want to spend?"
You can add the later brake booster to your non-boosted car but you'll need the entire pedal box assembly from a later car and have to modify the shelf where the pedal box attaches. I went the opposite route by installing a dual-circuit, non-boosted brake system in a '77 B shell that I also added a Rover V8 into. In my case, I had to drill a couple of new holes to attach the box cover but otherwise, it was a relatively easy swap. I also redesigned the brake line circuits to eliminate the PDWA (pressure differential warning assembly).
"Speed costs........how fast you want to spend?"
Attachments:
brake valve 001.JPG 51.6 KB
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