Belgian1979vette
Well-known member
Does anyone know what typical temperature drop one would see with the rads in our C3's, saying in stop and go traffic?
Thanks
Thanks
radiator question
- Thread starter Belgian1979vette
- Start date
Twin_Turbo
Der Maulwurf
- Joined
- Mar 5, 2008
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He wants to know the typical temp drop from the hot to cold side in a C3 radiator. However, that would be difficult to tell. Only thing you could do is ask several people to do a IR temp reading
SmokinBBC
Well-known member
About 15 degrees at idle after running awhile on the BB using an IR gun.
mrvette
Phantom of the Opera
And like TT alluded to, it also depends on the outside air temp, and the airflow with a/c on or off, or for that matter the fans or car speed....
it's all over the map, :flash:
Under most conditions, the drop will be anywhere from 10 to 30°.
As TT said, ambient is the biggest single factor affecting this, then aiflow thru the rad and then coolant velocity thru the tubes, all working together of course. Lower than 10, and you will have problems.
On a 95° day, sitting in traffic, you should still get 10°, a properly working system will do it and remain at tstat temp, but once you break over the barrier, recovery is almost impossible.
SmokinBBC and 15 is great.
As TT said, ambient is the biggest single factor affecting this, then aiflow thru the rad and then coolant velocity thru the tubes, all working together of course. Lower than 10, and you will have problems.
On a 95° day, sitting in traffic, you should still get 10°, a properly working system will do it and remain at tstat temp, but once you break over the barrier, recovery is almost impossible.
SmokinBBC and 15 is great.
Belgian1979vette
Well-known member
Guys, that's why I asked in stop and go traffic.
Smokin, I assume these are degrees celcius and with the stock fan ? I assumed something like 10°C, which would mean that I would need about 2 liter per second coolant flow to sufficiently cool her down. 15° is even better.
That leaves me with the next question, how much flow a SBC waterpump produces at around idle.
SmokinBBC
Well-known member
The temp diff if 15 Fahrenheit. Stock fan. Its a BB with a Dewitts alum rad.
Belgian1979vette
Well-known member
Hm, that changes some things. Well, I would assume that 10°C with a stock L82 radiator is possible.
