[171985]

Why not install a fan on it? It would be easy to do, and make a aluminum shroud to keep the air going through the radiator? Also, there's is a chemical to test if exhaust or gas from a blown head gasket is present in the coolant.

Link = https://www.amazon.com/Block-Tester-BT-500-Combustion-Leak/dp/B06VVBSFTF

 

[171985]

Lots of stuff to check. Adding a fan would be a last option. It's better to make sure everything else is on the up and up. It gives you the best baseline to work with.

 

[171985]

There are so many of these kits, you really have to decide on what size you need first, then shop for that, and you will find a kit.

 

[171985]

A battery is a really good idea. It will store any extra energy, and when the fans kick in, it will be just long enough to cool the engine down, and relay to shut off the fan tased on the thermostat a must. the battery will regenerate, and you have made a great modification.

 

[171985]

I would definitely do that fan. If I remember correctly, you put new thermostats in. The radiator will be hotter in places where the hot water first comes in and cooler where it exists, that's normal. It's important to make sure there are no leaks as fluid boils under a higher temperature when under pressure, so it will overheat less when no leak is present. It's also normal for the radiator temperature to rise when stopped as there is nothing pumping fluid through the radiator. Catch the over flow, eentually any excess will be pushed out. If you put a sheet of aluminum between the exhaust and the radiator, the would shield the radiator better than tape would. You don't need thick aluminum either, something you could hose clamp ontoo the exhaust would work, if you really feel you need to do that. Wrapping an exhaust takes the hea of the combustion and helps hold that heat it, and makes the bike run more efficiently. Wrapping wouldn't hurt. I've worked on many British cars that were known for vapor lock, and a small sheet of metal was all that was needed to stop the heat causing it.

 

[171985]

Wrapping an exhaust holds heat inside the pipe a lot, but that heat is moving through the inside of the exhaust. The heat your dealing with is the glowing outside heat outside the exhaust, which is much lower, but too close to the engine. High quality Hose camps, passed through aluminum roof flashing, doubled up (by making a slot you could pass the tab through two slots, in, then over the aluminum, then back out towards the exhaust) then run the clamp around the exhaust pipe, a clamp at each end of the heat shield, which you want only wide enough to shield the engine, but not so much that it blocks the air when the bike is moving. I think doubling up on the flashing will give you the rigidity you need, and allow for one sheet to absorb the bulk of the heat, and the second one to absorbe the rest. I would not make the sheet much widder than the exhaust, it would have a radius, I'd think 1/4 inch away from the exhaust, and the heat shield strip should be maybe 1/4 inch wider than the pipe. An aluminum block could act as a spacer. This would tell you if this concept would work. If it does, then you make one a little bit more finished off.