I've see 'blanking sleeve' applied to two different things. One is on an A
and possibly a 3-bearing B and restricts the flow of coolant through a port
which bypasses the thermostat to give a quicker warm-up. I'm not sure
whether this is relevant to 5-bearing Bs. The other is a restrictor used
*in place of* the thermostat, to restrict the flow of coolant through the
engine and radiator to that which would occur if a thermostat were fitted
and fully open. These are often used by racers as the thermostat is
superfluous but could stick closed. Running without one of these *or* a
thermostat causes a greater coolant flow rate through the engine, which
causes turbulence, which can result in local recirculation and hot-spots.
But for the purposes of brief testing when looking into a possible hot
running problem this restrictor isn't required, although one can be
fashioned out of an old thermostat by removing the spring and pellet and
just leaving the disc.
PaulH.
----- Original Message -----
> What is the consensus on the blanking sleeve? Important, not important?
_______________________________________________
Edit your replies
Mgs@autox.team.net
http://autox.team.net/mailman/listinfo/mgs
|