[DML] Re: Cooling Fans

["therealdmcvegas" <dmcvegas@xxxxxxx>]

Tuning the PRV, or any other engine has nothing at all to do with the 
need, or lack there of, for cooling fans. All cars do indeed need them, 
yes. You never know where the vehicle is going to end up, in traffic, 
etc. So without the cooling fans, the vehicle is unreliable. Even lots 
of air-cooled engines require a fan to blow air through them to cool 
them down.

Is it possible to drive around, and not have the cooling fans turn on? 
Yes, this is indeed possible with any vehicle, depending upon the 
enviornmental conditions around it, length of time the vehicle is 
driven, and how hard it is driven. But this isn't the correct question 
that needs to be asked. I read the description of this car, and what 
the seller is stating. He says that he doesn't need cooling fans to 
operate the car. However, what he is failing to tell you, is what 
temperature the car is currently running at. Yes, you could remove the 
fans, and tool around town, and yes, the car would run. But it may not 
be running properly, if you're cruising around with the temperature 
sitting at 230°F+. Sure, the car will run in the sense that it drives 
around. But the life of it's head gaskets will be significantly 
shorter. Because of those temperatures, your aluminum heads are going 
to expand ALLOT more, and will stress and eventually tear the head 
gaskets all that quicker.

Now, with this car in particular, take a look at the picture of the 
engine bay, from the eBay auction. Notice the radiator cap. That's a 
16lb. "leve-r-vent" cap (matches Dodge Dakota), and is NOT what the 
system requires. Take it from me, a person who had admittedly abused a 
DeLorean in the process of learning car repair. That cap being too 
highly rated for the DeLorean cooling system is dangerous to the car. 
The cap of course is designed to vent out excess pressure in the even 
of the car overheating. The reason for this, is so that no permanent 
components, such as hoses, pipes, or head gaskets are blown apart by 
high water pressures. I ran one of these same caps on my car, and over 
heated it. Before the cap blew off the pressure, two hoses were 
breached, and sprayed coolant out (hose from the over flow bottle to 
the metal pipe, and the lower hose on this same pipe, that bends below 
the car).

So imagine if I said this about my car: It has no cooling fans, it runs 
improperly hot, and to keep the cooling system from breaching, a 
heavier radiator cap is installed to prevent the car from purging 
coolant. Sure it drives around, but at the same time, I'm doing long-
term damage to the engine. Does it still sound like I don't need 
cooling fans installed? Let alone like tuning an engine is magicly 
going to make a car run cooler?

If to significantly lower operating temperatres, this person 
has "tuned" the engine, I'd be worried that he's running it too rich, 
and may just be washing out the cylinders.

-Robert
vin 6585 "X"



--- In dmcnews@xxxxxxxxxxxxxxx, DMCVIN6683 <dmcvin6683@xxxx> wrote:
> [Moderator Note:  Please notice that this message is a question, not
a statement of fact.  - Mike Substelny, DML moderator of the week]
> 
> I was told by an owner that cooling fans are not required on 
Deloreans in colder climates.





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