My '5 Went Pop

[skinny]

speedychrissie said:

steve bowen said:

speedychrissie said:

-fuel consumption at just over 4k revs (80ish) is much higher than at just below 4k revs hence a lot more heat generated

Doesn't work like that more fuel = lower cylinder temps thats why you add fuel to prevent det

how does that work then? i just assumed that the more fuel you burn the more heat produced.

it would do if it burnt it all, but for a given amount of air you can only burn (effectively) a given amount of fuel. when it runs rich some of the fuel is only partially burnt. the rest of it keeps things in the combustion chamber a little cooler.

[redgriff500]

steve bowen said:

ginettajoe said:

If you have fitted one of the alloy grilles that are sold on e-bay, you will find that is the problem, ..... it restricts the airflow to the radiator. Some of the MaX5 race cars had them fitted, they overheated, but the problem was solved when they were removed!!

I find this hard to believe as cars with aircon have a big rad far more restrictive than some mesh placed infront of the coolant rad (unless your taking about mesh in front of aircon rad infront of coolant rad). Also turbo cars have big intercoolers in the way too. Admittedly I played it safe and got a koyo alloy rad to sit behind my intercooler but i've had no overheating problems.

Yes but have you seen some of the wanky designs ?

Some have holes pressed in steel plate that effectively halves (or worse) the airflow !

[Wigeon Incognito]

Hi all,

Thanks again for all of the help and advice.

It looks like on this occasion it was me just stupidly neglecting to check the coolant level in the radiator so my bank account (but not my pride) can breath a sigh of relief!