Oops. So, are you saying that they can't be rebuilt, but they can be
remanufactured? I tend to think NOS parts, or good used ones shipped
from Europe would be cheaper than that. It'll just take more work
beating the bushes to scare the loose parts out...
wtmitchell wrote:
>
> Dear all with interest in alloy brake drums with cast liners.
> Having made a number of these replacement parts when I owned Halibrand
> Engineering, Most are cast sleeves with lugs protruding on the periphery of
> the sleeve, tapered in both directions to prevent the sleeve walking out.
> the sleeves are placed in the mold after the pattern in removed. (sand Cast
> and perm Mold type casting). The moltem magnesium or aluminum is extremely
> agressive in fixing itself to the cast iron liner. Ted Halibrand had me
> plate the external part of the sleeve with cadmium to make it "stick"
> better. We never had a failure with the sleeve coming loose. Some early
> Ferrari's have a sleeve that is made separately annd has many rivet to hold
> it in place. Remember if you try to shrink fit the sleeve that with heat
> the aluminum expands away from the cast sleeve and you lose the
> interference fit. Not wise proceedure.
> Sorry to be a wet blanket but please be very carefull with home built
> suggestions here.
> Wayne Mitchell, Chief Tech Inspector VARA
> Manufacturing engineer- Mechanical and certified car nut.
>
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