Interesting point about the "less heavy density" rad. When I enquired about
getting a rad made for my car, I was told to go with the 4-core, staggered
(meaning the cores are off-set behind each other rather than in-line) type
as this will provide better cooling for each core. Better to cool multiple
tubes than 1 or 2 large ones (an exaggeration but hopefully you get the
idea).
Short of buying a new rad, I'd suggest you experiment with moving the sensor
to different locations and see how that works. Maybe I'm missing something
but to me, sensor location isn't as relevant as having your fans come on at
a set point. Where this point is doesn't seem too relevant. As I
mentioned, my fan switch "bulb" is glued to the back side of the top tank
and I just watch the temp gauge to decide when I want the fans to come on.
Usually between the N and H. If I'm in traffic on a hot day, I'll adjust
the switch to come on earlier. One of these days, I'll install a manual
switch on the consol to avoid having to get out and lift the hood in
traffic.
For those in the know, where is the sensor on a factory car? IIRC, is it not
installed on the back side of the top tank?
> Simon,
>
> My fan is wired to stay/come on even if the ignition is offed! I have
> through the wings exhaust manifolds (much prettier than the RV8 ones !)
> But my question was more related to which would be the best place to put a
> temp sensor rather than relate to my current 'too hot when idling'
> situation. This, I believe, will be solved by fitting a less heavy
> density rad so more air will be able to circulate with the 2,960 cm
> electric fan at idle. Too many tubes, far too restrictive
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