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WWIIFanatic

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Posts posted by WWIIFanatic

  1. Hello Everyone, 

    I need to pick someone’s brain about a conversion issue. I recently bought a 1979 Brat and am attempting a rear disc conversion. I pulled the backing plates and calipers from a 1986 GL-10 Turbo. The backing plate bolted onto the rear trailing arm after removing a quarter inch off of the back of the arm. Then I ordered some new rotors (made for an 86 GL-10), then I pulled the hubs off of a set of gen 1 brat front brakes I had lying around and my intent was to bolt the hub directly to the new rotor. However, as I was getting ready to bolt the hub and rotor I found the bolt pattern did not exactly line up. I took some measurements and found the gen 1 brat hub has an approximate pattern of 4 x 90 and the new GL-10 rotors have an approximate bolt pattern of 4 x 100. So my question is are the hubs from the mid 80s slightly larger than this of the gen1? Thanks for any help you  might give.

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