<VV> Shrouds

[62Vair at gmail.com]

I was doing some timing, balance and idle mixture adjustments the other  
night after a drive and the air exiting the two outlets was blowing on my  
legs. It was hot enough I did not want to stand in one place too long, but  
decided to measure the temp. It was in the 160 degree F range and cooled  
off to around 145 after a few minutes of idle. I do not know what temps the  
CHT might read if I had one installed. I plan to get the car thoroughly  
warmed up in the next month and then drop the oil and filter for its fall  
change, and measure oil temp, too.

There is no issue with our engines running a bit cooler. Remember the water  
pumpers have been running well in the 180 to 215 degree F range for years,  
so there is no need to have the temps in the 300's operationally, other  
than for cabin heat. Those higher temps are just typical for an air cooled  
engine, and I'm pretty sure the heads are in the 325-350 F range when you  
are powering down the road as usual, because the doors would be open at  
that time, anyway. Having them off would only mean less heat, a slower warm  
up due to higher air flow, and a bit quicker cool down.

My car actually was hard to start hot in 90+ degree weather, until I took  
the doors off. That small change made the engine just cooler enough that  
the heat soak in the carbs was less, and the engine started with no  
coaxing, hot, say, after getting gas.

Mark Durham

On , Bob and Carol <hallgrenn at aol.com> wrote:
> I agree with Mark's points with one more--keeping the lower shrouds on  
> means the heated air exits the back and can't short cycle as easily back  
> from the sides into the fan drawn cooling air at low speeds and a stop.

> Bob

> Sent from my Samsung Epic™ 4G