Coolant system pressure testing

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75evo
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Coolant system pressure testing

Post by 75evo » Mon Jan 20, 2020 10:06 pm

Have any of you guys done pressure testing on your coolant system. I used a bicycle pump, a cheap pressure gauge, T- fitting, and tube valve. I then pressurized the system to about 8 psi to check for leaks. Particularly all those damn water plugs and hose clamp areas. Found a few small leaks here and there :mrgreen: . Tightened up everything and hopefully no more cooling problems after this. Will post photos of my nifty device.
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105gta.
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Re: Coolant system pressure testing

Post by 105gta. » Thu Jan 23, 2020 7:43 pm

You might want to actually test the system at a proper pressure. Generally 10-20% over the cap pressure. Mines 1.4bar or 21 psi. I check it at around 25-30psi. As at any point during running. It could reach at least the cap pressure.
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75evo
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Re: Coolant system pressure testing

Post by 75evo » Sat Jan 25, 2020 9:44 pm

The stock 75 coolant cap is about 10 psi only. I have pressurized it to 12 psi using the 164 Cap (1-bar). That’s should be good enough. Hoping the bloody HG doesn’t blow again.
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