The temperature range that you are worried about is NOT an issue with your engine. If it worries you then it's your money. As long as temperature will stabilize, a 230 degree reading does not bother me. Any more tho? On top of that, new engines will run hotter for awhile, so the increase in temperature compared to old does not surprise or concern me.
It sounds like the fan is enough according to your description. I could not ascertain this completely, but if you changed the thermostat also, if so the operating range can differ slightly. Also, thermostats with relief holes drilled in them can offer slightly differing temperature readings due to outside ambient temperatures as well. Some of this could be what you are experiencing.
Your mixture of antifreeze will not affect the cooling ability at idle when the issue is airflow. You have to have air to remove any additional heat the coolant will bring to the radiator. If you are holding coolant, a higher cap will not help either unless you are worried about going up further in a run away heating situation, then they are good insurance policies. A typical 10 psi buildup in a cooling system will provide boiling protection to 239 degrees F.
Actually the system sounds pretty solid. The only easy, but expensive upgrade is one of two methods. A new radiator from PRC, go to www.streetrodstuff.com/Product/157
for a custom made radiator for under $300! Great quality too. Contact [email protected]
and no I am not a commission saleman!
You could step up with twin Spal fans that will set you back a couple of hundred as well.....or both upgrades.
The mechanical fan can be put back on, but cluched fans have a checkered past with consistent performance, and fixed units eat up to 45hp....yes, I said 45hp, according to tests I have done and corroborated at
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