Robbo
Donation Time
I use the stock 7lb cap and made sure to measure the stem too. Just to clarify, when i had a similar issue, some members helped me identify if it was overheating or just running hot. In the summer i had to get used to running hot in various situations but it did not overheat. If the timing and mix are set, look to the cooling system and the posts have the factors to look for. Careful on rhe pressure though, adding that much to a cooling system that is not operating properly will not help. New thermostat, get the air out of the system, check for gases or bubbles, identify if a 2 or 3 core rad (3 is more efficient), flush and check for clog or sediment and check the pressure of the cooling system, use at least 50-50 water-antifreeze mix are all good first simple steps and especially dont assume the guage is correct (unless you are in fact overheating then its probably right Good luck!