Overheating on Motorway

[chim450]

I took my 450 for a long motorway journey over the weekend. All was fine until I got a little heavy on the throttle, I looked down at the temp guage after twenty minutes or so, and it read just over a hundred!!
I immediately dropped to sub warp speed and the temperature gradually came back down to 90. It has been fine since, although I haven't tried any sustained high speed runs. Sounds like an airflow problem, anyone had something similar? does having small front plates prevent this?

[Steve_T]

Be very suprised if just lack of airflow was the cause of an over heating problem at high speeds. Suspect another contributory factor here.

Steve.

[ribol]

If the temp is cranking up at "warp" speed I would have thought a mixture/timing problem would be more likely. The only time one of these cars is not likely to overheat is on the motorway. Must be worth investigating sooner rather than later, there are a lot of pistons to melt on a V8

Ivan

[drum4it2]

I trust the more knowledgeable out there will correct me again as this subject has just been aired on another post of mine! However, I did drop the number plate low and it DID make a difference (although I didn't go for the smaller plates) I then had my Radiator re-cored because the cooling fins on the side behind the front grille were totally rotten! - car now runs cool, but not too cool!!! Worth a check? - Good luck!

[jj.]

Let the car sit at idle (this may take some time) and watch the temp and make sure the fans cut in and out (at the normal gauge readings) if not then perhaps the gauge is reading incorrectly.

A rad core does help – mine always ran at 90, but with a rad core it now runs about 80-85. Although they do seem a little strange. I spent 45 mins in a traffic jam in France about 4 weeks ago in 35 degree heat and the temp never once went above 85. But 2 weeks ago going to Skegness in 20 mins of UK traffic jams, the temp went to up to 95…!!! Eh…!?! work that out…

As a general rule of thumb mine has never run at temperatures when doing a motorway run (even at the 100 mph mark) it v.rarely goes above 80 once moving. But then I do use a small 8” x 21/2” front plate on mine - .
jj