skssgn wrote:
does anyone else tap and block off the bypass altogether? the last couple of motors I did we blocked it off, which makes life much easier. Put a plug in the head, and tap & plug the outlet on the water pump.... no more leaking bypass hoses, no more lining the bastards up when you put the head on etc. etc.
the bypass hose is there to let a little bit of hot water stay inside the engine - it bypasses the radiator.... basically keeping the motor hotter, the poms needed it, we don't
anyone else do the same?
Main reason for the bypass hose is to let water circulate thru the head and block during warmup, before thermostat is open. If you just block it off, the water pump will cavitate and there will be no circulation at all (unless heater circuit is open).
If you
must block it , drill a few 1/8" holes around the thermostat. Race cars use a thermostat blanking sleeve which is pretty much the same as a partly open thermostat- but probably not great for a road car.
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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
