Richard
Do you have a thermostat or restrictor in your system? If not the water
pump could possibly flow more water than the radiator can handle and in the
process make more pressure than the cap or hose can take at very high rpm.
Maybe put a pressure gauge in the block to see what it is at high rpm.
Ron Gibson, Omaha NE
>
> >hi, my name is dick spencer and i live in garland utah. i race a 80
> >monza in e/cbga and through the help of the list i t ran good( 190mph)
> >and handled good(thanks lsr385) for the advice on putting castor in it.
> >BUT it did some things i could use some opinions on. first run it blew
> >the radiator cap off. figuring i just hadn't tightened it i ran it
> >again, blew the radiator cap off again, so i safety wired it so it
> >couldn't come off , instead it blew the radiator hose that goes to the
> >water pump off. the cap is mounted on the engine since the engine is
> >higher than the radiator. i took the radiator cap off while the engine
> >was running and water gushed out when i rev the engine. i also checked
> >the head gaskets and the were ok. thanks in advance dick spencer
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