March / April 2015
17
Another weak link on the track for
the Boxster/Cayman's are overheating
power steering pumps. There are a couple
solutions for this including electric power
steering, but we chose the cheaper route and
went with a smaller crankshaft pulley which
allows the pump to turn slower, which
should help prevent overheating. For now
we are keeping the A/C system intact since
it will be a dual purpose street/track car.
Here you can see the size difference
between the stock and underdrive pulley
And of course on ANY M96/M97,
the first thing you should do is replace
the waterpump. This should be a 3 year
maintenance item, even on a street car. If
the fins break off the impeller, they will clog
themselves in the coolant passages to the
cylinder heads and you WILL eventually
crack a head and cause intermix of coolant
and oil in the engine. Don't worry, that is
a cheap fix at about $10k. Preventative
maintenance is key here! Replace your
pumps!
And of course, for the track we add the
3rd radiator up front for a little extra cooling,
along with a low temp thermostat. The
987/997 system is SO much easier to add
the 3rd radiator as the quick connect ports
are on the side radiators already. A couple
quick connections and you are done.
CAYMAN
-
Part
1
of
a
3
Part
Series
