[DML] DeLorean Alternators (Re: Bolt On Performance -- The REALLY Big Pi
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[DML] DeLorean Alternators (Re: Bolt On Performance -- The REALLY Big Picture)



My point exactly. In a DeLorean air flows backwards over the
alternator. That's why its fan blades are useless. And as you
correctly point out, ambient air is drawn over the hot engine &
exhaust before passing over the alternator. The overall result is
inadequate cooling and shorter lifespan.

Volvo PRV's have air coming towards the front of the alternator, where
the fan blades (alternator blades, not engine fan) force it through
the housing. Volvo  also mounted the alternator down low (typical
automobile practice), where the DeLorean exhaust stream dictated
relocation:

upload.wikimedia.org/wikipedia/en/thumb/2/25/PRVenginevolvo.jpg/250px-PRVenginevolvo.jpg

Ambient air is drawn under the radiator and A/C condensor, not through
it. Overall result is a longer lifespan.

BTW: That device on what we'd call the passenger valve cover is a cam
driven vacuum pump. Why Volvo needed an auxilliary vacuum pump is
beyond me. I believe it was dropped for the 760.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "cbl1739" <cbl302@...> wrote:
>
> Actually,The Delorean was very well engineered for removing engine 
> heat from the engine compartment,as the air flows above the roof of 
> the car (at speed)and over the Louvers,it actually Sucks the engine 
> heat from the engine compartment at speed,(in a fashion like in part 
> III  of the BTTF Train at speed)problem is at idle or when the car is 
> not moving the engine heat is stagnant,that is why if you look at a 
> Lotus Esprit,it HAS a Electric fan that sits on top of the engine 
> cover to suck the built up heat from the engine compartment,I could 
> never figure out why Lotus did not do the same on the 
> Delorean,meaning it is a simple bolt on item,Heck there is no reason 
> why a couple of aftermarket electric fans(or even one) could not be 
> bolted on the engine cover,in the same fashion as on a a Esprit,(in 
> the grill section)to help remove the engine heat in low speed 
> driving,such as in a parade,when the Louvers do not do much to remove 
> the engine heat.They would not show from the outside,and would go a 
> long way in helping to keep things cool in the engine compartment,and 
> help in keeping the alternator from overheating as you were saying.A 
> cheap and quick heat solution!!
> 
> Claude
> 




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