bradc
19-05-2008, 07:29 AM
I moved my external temp sensor to the air box, it is between the two holes you see in the pic, just beneath the air filter where the stock battery location is. My air box is mostly sealed from the engine bay, there is a 3mm gap at the top of it with the fuse box, but I thought it was fairly good.
I went for a drive today through about 15km of normal urban streets with quite a few traffic lights and I noticed the external temp went up to 38C. I took this photo at 36C but didn't manage to get one at 38C, the car was moving then.
It stayed at about that temperature until I got onto the motorway, it took about 10km to drop down to 37C from 38C, then it quickly dropped down to 28C over about 2km, and eventually down to 24C, at this point the actual ambient was around 19C
On my trip down to Whakatane this weekend it was at 13C at the top of the bombay's after sitting still for 10 minutes while I was getting petrol and a drink, and slowly came down to 5C over the next 20km or so, I think Ryan's car was measuring around 5C at the start and down to about 4C at one point?
On the way back today it got up to 20C, but the ambient was hotter, probably about 15C or so.
It is a bit concering it went up so quickly around town and took so long to cool down, the engine bay temp is obviously affecting it. I think I will try and double wall it with some polystyrene as a filler and see what happens, hopefully it will insulate it better.
I went for a drive today through about 15km of normal urban streets with quite a few traffic lights and I noticed the external temp went up to 38C. I took this photo at 36C but didn't manage to get one at 38C, the car was moving then.
It stayed at about that temperature until I got onto the motorway, it took about 10km to drop down to 37C from 38C, then it quickly dropped down to 28C over about 2km, and eventually down to 24C, at this point the actual ambient was around 19C
On my trip down to Whakatane this weekend it was at 13C at the top of the bombay's after sitting still for 10 minutes while I was getting petrol and a drink, and slowly came down to 5C over the next 20km or so, I think Ryan's car was measuring around 5C at the start and down to about 4C at one point?
On the way back today it got up to 20C, but the ambient was hotter, probably about 15C or so.
It is a bit concering it went up so quickly around town and took so long to cool down, the engine bay temp is obviously affecting it. I think I will try and double wall it with some polystyrene as a filler and see what happens, hopefully it will insulate it better.