remember they stoped making real SSS engines with flat top's in 1973
so you will be lucky to find L18SSS flat tops used.
They are only about $50NZ new each with rings and gudins
Malcolm
Craig Overend wrote:
>
> Guy,
> the proper 180B SSS A87 had bigger ports ~38mm vs standard 180B ~32mm
> the only other difference is the camshaft, Twin SU's and flattop pistons
> and a recurved dizzy from memory. There is supposedly about 4 versions
> of the A87, I've only seen the closed chamber small and large port. Just
> get the common small port with 42mm inlets, 35mm exhaust valves and port
> it to your needs to suit the cam. The other choice is a V912 that look
> the same as the late model A87 with small ports.
> You can get a rough idea of condition by pulling the rocker off and
> looking for general cleanliness and the deposits around the valve guides
> for carbon, cam lobe condition, broken/loose head bolts, stuck valves,
> lash adjustment, head thickness(~107.8mm). If it's been sitting for a
> while without the carby/manifold it's likely water is rusting the
> valves. If removed check the head for excessive water passage corrosion,
> if its been welded anywhere aswell.
> If it doesnt pass my list I don't buy it, but I'm picky, better to start
> with a good head than a bad one I say.
>
> Craig.
>
> > Guy Coble wrote:
> >
> > What datto's had the A87 closed chamber head, I know the 180b sss did
> > just marked differently but the are bloody rare now.
> >
> > Thanks
> > Guy
> >
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