Anything over 225 is heading for damage territory..
I swapped a puller fan blade on my VFR800 for a pusher fan blade from a Honda VTR, to fix a lack of cooling air flow causing overheating in traffic.
Before I did the swap, I'd be riding around on my non boosted VFR showing 175-180f coolant temps, stop in traffic and watch the temp rise to 220. The cooling fan would spool up, but the temp would keep climbing. Even if I broke out of the traffic and got moving again at less then highway speeds, the temps would still climb into the 230's.
After the swap, stopping in traffic the temps will rise to 220, the fan will kick in, then drop back down to about 214. As soon as I can get the bike free of the traffic and moving again, the temps drop right back down to 170-180.
I guess what I'm saying is, pull some more of the blocker out..
Just a question for you, is your radiator a vertical flow unit or is it a cross flow unit like so many of the new car's use. If that is, remember a vertical gap in the blocker will be more effective than a partial horizontal one. It also prevents uneven expansion of the core. I've had an aluminum/plastic radiator crack the end tanks from uneven heating and uneven expansion.
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JohnS
Black Cherry (no epa ratings)
Dad's Taxi
The Lead Sled (EV conversion coming soon)
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