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Thread: 11in front brakes on late 2A swb - upgrade option when new?

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    11in front brakes on late 2A swb - upgrade option when new?

    Was the 11 inch drum brakes an optional h/d upgrade available on the 2A 88in swb???
    I am thinking that I have seen this as an option somewhere, but can't be sure.
    This is another certification issue, as the upgrade doesn't need certification by the engineer if it was an option when new.
    I wonder if it was, where could I find an acceptable reference to show the engineer!?!?!?
    Mustlust

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    would anyone know the difference anyhow?

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    The 11" brakes were never an option on the 88" but they were a common retrofit by civilian owners. Most sought after were the 3" wide 11" assemblies from the forward controls and later the 6 cylinder bonneted models (late SIIa and SIII). I even, know people who fitted front leading shoe 11" assemblies on the rear (opposite side) that way you always have 4 leading shoes in the direction of travel whether going forward or reverse.

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    Didn't the early 80's swb's come with the bigger brake standard? maybe on the v8's?

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    The guidelines for light vehicle modifications from NSW RMS appear to indicate that fitting 11" Land Rover brakes to a Land Rover originally fitted with 10" brakes would come under the category of not requiring certification. see: section 16 http://www.rms.nsw.gov.au/documents/...ifications.pdf. While the example is fitting disks to a LC Torana from a GTR Torana, the 11" are greater specification than the 10" brakes and therefore meet the criteria for self certifying.

    While the information requires all components must be fitted, which would indicate that you also have to fit the 11" master cylinder, it becomes less clear if you wanted to use the dual circuit M/C and booster pedal box (section 17) although that pedal assembly was standard on the late SIII 88" around 1980.

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    Quote Originally Posted by debruiser View Post
    Didn't the early 80's swb's come with the bigger brake standard? maybe on the v8's?
    The very late SIII 88" most certainly had the boosted pedal box but I'm not aware about the 11" brakes. The V8 stage 1 and Isuzu Stage 1 had the same brakes as the suffix G SIIa six cylinder and SIII six cylinder = 11" with 3" wide fronts and boosted pedal box (dual circuit from around 1977)

    The issue of whether late SIII 88 brakes are applicable options for a SIIa 88 comes down to the definition of are the SIIa and SIII the same "series" in the mind of the RMS.

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    A bit late maybe but just for your information.
    11" twin leading shoe front brakes were fitted as standard from the factory on 1980 and newer 88" Land Rovers.
    The 10% larger diameter helps some. The width of the shoes increasing from 1.5" to 2.25" helps quite a bit more. The extra leading shoe per drum helps a lot. All in all a worthwhile addition, especially with larger than standard tyres. The larger brakes were not fitted to the back axle as it cauld cause the back wheels to lock up under braking
    Running these 11"ers on my '63, 88" since 1982 without problems. It is on 255/85R16's nowadays, used to be 900's.

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    I assume you refer to UK produced vehicles. Worth noting that this would not necessarily apply to Australian built vehicles. If it does apply to them it is likely to apply at a later date. By this date, 88" Landrovers were becoming relatively rare in new sales here, with most buyers getting the 109.
    John

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    ok, dumb question, but where are 10 inch and 11 inch drums measured at?
    is it the outer diameter of the drum or the inner diameter where the brake shoes act?
    I just eyeballed my s2a fronts and the front drums appear to be about 12 !/2 inch at the widest point of the inboard rim of the drum
    (of course that is a rough measurement as the wheels are still on, so a bit difficult to measure accurately.

    and re telling the rego man, why bother, it's got brakes, why offer up info to confuse him.
    Safe Travels
    harry

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    It is the diameter of the working surface - easy to measure with the drum off, more difficult installed, but with a little experience can be identified at a glance. Front 11" brakes have two wheel cylinders, 10" only one and are the same front and back.

    John
    John

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    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

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