2010 TnT 899 coolant leak from tiny casting flaw

[tntstreetshredder25]

Has anyone else experienced something like this? My 2010 TnT 899 had a tiny coolant leak that I couldn't figure out for quite some time. It turned out to be from a small casting flaw near the thermostat housing. It was almost impossible to see, it looked like a pinhole when I finally found it using a flashlight and a mirror.

At first glance, it didn't seem like a big deal, but under pressure, it leaked just enough to lead to slow overheating during longer rides.

I'm curious if anyone else has come across weird little casting defects like this on their Benelli. I'd love to hear how you dealt with it

 

[BNL101]

It's not something I've heard as a widespread, common issue on the Benelli TNT 899, but manufacturing defects can happen on any bike, regardless of brand. I'm curious if you also did a pressure test on the cooling system and if it was effective to track down that pinhole flaw? Anyway, as for dealing with it, a proper repair would likely involve cleaning the area thoroughly. Then use a high-temp, pressure-resistant sealant designed for engine blocks or cooling systems. Welding or a more involved repair might be too much for that size.

 

[Florynnn]

Has anyone else experienced something like this? My 2010 TnT 899 had a tiny coolant leak that I couldn't figure out for quite some time. It turned out to be from a small casting flaw near the thermostat housing. It was almost impossible to see, it looked like a pinhole when I finally found it using a flashlight and a mirror.

At first glance, it didn't seem like a big deal, but under pressure, it leaked just enough to lead to slow overheating during longer rides.

I'm curious if anyone else has come across weird little casting defects like this on their Benelli. I'd love to hear how you dealt with it

I mean... that kind of flaw is rare but I've heard about it for a couple times now although haven't experienced it myself. But yeah it's a little usual especially on cast parts under pressure. You can probably try a JB Weld high-temp fix first unless you're set on replacing the housing.

 

[Bene.dict]

You can use a high temp epoxy as a temporary fix, but ultimately you'd have to just replace the housing