Page 1 of 1

Coolant system pressure testing

Posted: Mon Jan 20, 2020 10:06 pm
by 75evo
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.

Re: Coolant system pressure testing

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

Re: Coolant system pressure testing

Posted: Sat Jan 25, 2020 9:44 pm
by 75evo
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.