Thanks a lot for your suggestions. Here's how I see it:
At speed, there's no problem, so I conclude that the radiator's ok.
When I turn on the heater, I get heat, so I conclude that the water circulation is ok.
Seems like the "fanning" is all that's left.
I think that the combination of upgraded fans (or at least one upgraded - I'll get to that in a minute), and a new water pump that will allow for a larger fan in place of the smaller one, and the radiator re-cored should solve the problem once and for all.
As I mentioned, I have a larger fan on the left and the smaller one on the right (both behind the radiator) to allow space for that oem fan shaft on the water pump. If you put your hand in front of the radiator, on the left you can really feel the fan pulling the air through. On the right, the pull from the fan is much weaker.
So I think that a new water pump (with no fan shaft) and a larger fan on the right will do the trick. So what I really need to know is, what water pump will fit my 1500 engine but not have the fan shaft sticking out? I understand that Nigel at SpitBits can be very helpful for stuff like this - can anyone send me a number for him? I'll have to look at home, I think now that I *might* have bought something from him before....
Thanks again for the inputs.
George P.
From: James Carruthers <[EMAIL PROTECTED]> To: Douglas Braun <[EMAIL PROTECTED]> CC: "George P." <[EMAIL PROTECTED]>, [EMAIL PROTECTED] Subject: Re: Cooling the Spit Date: Mon, 11 Aug 2003 15:50:44 +0100
Doug, George,
The most efficient place for a fan is behind the rad - not in front of it...
If the fan is in front of the rad it just blocks the "natural fan" of the air coming in the front of the grill...
However as Doug says - the stock fan should work perfectly well - it's likley to be something causing this other than the fans.
James
69 Signal Red Spit
Douglas Braun wrote:
Maybe you should temporarily refit the stock fan (removing the electric ones),
and see if that makes any difference. Then you would know if the problem was
due to insufficient fanning or something else.
If you really must have an electric fan, maybe a single big one on the front
of the radiator would work better. Probably somebody on the list who has actually done
this can say how well it worked.
I once removed my stock fan and drove a couple of miles to see if I could detect a reduction
in noise or an increase in power. (Don't get stuck in traffic while doing this!) I could
not detect any significant improvement, so I put my electric fan plans on the back burner.
Doug Braun '72 Spit
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