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72 expansion tank hose sizes.

Old 05-29-2017, 02:47 PM
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540 vette
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Default 72 expansion tank hose sizes.

What are the size of the hoses that run from the non a/c expansion tank to the radiator and the one that goes overboard. Also what pressure cap is the right one for the expansion tank.
Old 05-29-2017, 03:47 PM
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Alan 71
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Hi 540,
The heater hose that runs to the tank is the 3/4" hose, not the 5/8" hose.
The hose from the radiator to the tank is 3/8".
The overflow hose from the tank is 5/16".
The radiator cap is an RC-26, !5#.
Regards,
Alan

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Old 05-30-2017, 02:45 AM
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Thank you Alan.

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