I just found this radiator cap, cheap too.

[Wollfen]

here is a radiator cap with a temperature gauge in the top. I think that could be useful for some people when troubleshooting on the road.

Car 1.1 Bar Thermostatic Radiator Cap 16 PSI Pressure Rating Temperature Gauge | eBay

 

[stubs300]

here is a radiator cap with a temperature gauge in the top. I think that could be useful for some people when troubleshooting on the road.

So would having a Thermo gun, and probably 100% more accurate then that.
I just see another worthless Made in Hong Kong POS that will probably break after it's first use if not before hand. I think I'll keep my $6 thank you.
Neat concept but I just don't see the practically in it, and what's with the goofy pressure thing? What's a 0.9, or 1.1, or 1.3 mean anyways, must be a Metric thing??

 

[Turboomni]

Unless you have an overflow tank it would just read the steam not the water temp correct?

 

[traintech55]

I guess someone is trying to bring back an old idea from the 1920's. Well it has been almost 100 years.

 

[Carmine]

The Monaco I brought home had one of those caps. It still overheated.

 

[Ripinator]

I guess someone is trying to bring back an old idea from the 1920's. Well it has been almost 100 years.

A Motometer! I think Gary's SFGT would look great with one sticking through the hood.

 

[Pete Kaczmarski]

Unless you have an overflow tank it would just read the steam not the water temp correct?

Years ago I was advised that the temp sensor reads coolant not from steam. That was told to me by a squad mechanic when the M bodies were blowing out the engine block freeze plug heaters and running the engines hot and junk.

 

[Knebel]

1.1 BAR is European equivalent to your guy's PSI. The gauge is metric too, wouldn't have an issue with that, cause I know that water boils/starts evaporating at 100°C and freezes at 0°C.

 

[zigs]

Nothing like bursting a guys bubble.
I won't even mention I installed a cool view on the thermostat housing. Ha !

 

[Alchemi]

1 Bar = 1 Atmosphere = 14.7psi

 

[MarPar]

maybe this is what @commando1 needs for his Champion

 

[commando1]

maybe this is what @commando1 needs for his Champion

And......... maybe NOT.

 

[Wollfen]

Dont buy it, I didnt check but its a small cap, for a 4cyl car, tiny thing.

 

[live4theking]

Dont buy it, I didnt check but its a small cap, for a 4cyl car, tiny thing.

I've also seen them listed for Honda motorcycles.