quote:
Originally posted by lyonheart84
Can any technofile tell me what the wheel stud measurements ( PCD ) are for the 3000ME i.e something like 5 x 110 ? In other words what other car has the same stud measurements, or what hubs did AC use if they didn't use their own design / size ? Thanks
AC were not alone in the 1970s in designing and manufacturing in-house to imperial sizes, whilst having to accomodate the metric sizing of bought-in parts. The wheel hubs and bolts are a good case in point!
a.The PCD for the 3000ME wheel bolts is 4.252 inch, which is exactly 108mm.
b.The hub is bespoke, machined from a bespoke forging, and is designed also to accomodate the SKF bearing used on these cars.
c. The wheel bolt shank diameter is 0.5007 to 0.5011inch, and appears to be an interference fit in the hub. The thread is 12M X 1.5 pitch.
d. The original wheel dimensions are 14inch dia, 7inch rim width and 0.31inch out offset. This was quite common in period, in particular in US. However, wheels of those dimensions with the 3000ME stud configuration appear to be very rare.
e. Front and rear are identical in respect of the above dimensions.
At least 2 3000MEs have had different wheels fitted as an after-market change but I do not know what other modifications, if any, were necessary.
John