Re: Re: Clutch Fan removal

[jkerouac@xxxxxxxxxxxxx]

re: re: Clutch Fan Removal
     If another poster wishes to attempt blanket invalidations and 
generic invalidating anecdotes of other people's mods, I will continue 
to file their postings in /dev/null.
     I keep my temperature needle at vertical or less regardless of 
conditions.  At the low fan speed at prolonged idle on a hot day the 
engine temperature rises above that.  Maybe I nurture the structural 
integrity of my head more than others, or its just that I make sure my 
nuts are securely attached.  lol.
Tally Ho,

'jk

alex.fadeev@domain.elided wrote:

>Barry <jkerouac@domain.elided> wrote:
>  
>
>>      Following a link given on this digest to www.Understeer.com,
>>I found an article about removing the clutch fan in order to gain an
>>effective increase in acceleration, even though the net power output
>>of the engine is not increased.  This is due to not needing to turn 
>>the mass and air resistance of the fan.  The mod works to a 
>>noticeable degree.
>>    
>>
>
>True enough. 
>Main engine fan delete is one of the popular track mods. 
>Actually, some of E36M3 friends run without main fan, with AC ON in stop 
>and go Dallas TX traffic in the peak of the summer and get away with it. 
>To the best of my knowledge, no one had reliably measured how much HP the 
>main fan draws with the viscous clutch disengaged, partially engaged or 
>fully engaged. Thus it is impossible to compare the engine loads between 
>the stock viscous clutch fan and the auxiliary electric fan when it kicks 
>in to provide extra cooling. But as long as the electrical fan is OFF, you 
>might be lowering the accessories' draw on the engine by 1-3 extra ponies. 
>
>Not something 99% of the people on this list are likely to feel in real 
>life. Nor something one can measure on a dyno (will likely fall within the 
>margin of error).
>
>  
>
>>     The liability here can be due to decreased engine cooling under
>>10mph, with no air circulating through the radiator of course when
>>standing still except what the low setting on the dual speed electric
>>fan gives.  In most weather conditions this low fan speed is entirely
>>insufficient on its own to keep the engine at or below thermostat
>>opening temperature. 
>>    
>>
>
>There is nothing magic about keeping thermostat closed or partially open 
>on a car. 
>Fan-less E36M3 owners report no signs of overheating even in Dallas summer 
>heat (95-110F May through September). So the low speed of the BMW 
>auxiliary electric fan is plenty adequate even with AC ON (extra heat from 
>the condenser).
>I am not one of them for the reason of durability. Having shelled out $280 
>for a replacement eclectic auxiliary fan on my E30, I'm in no hurry to run 
>my E36M3 fan into the ground. 
>Plus I can still win my autoX class with the main fan in place, so why 
>bother. 
>
>  
>
>>      I have not seen it presented in either the Understeer.com 
>>article or elsewhere the following simple change to the electric fan
>>switch connector that gets you the high fan speed as soon as the switch
>>reaches what would have been the low speed setting. 
>>    
>>
>
>Entirely unnecessary.
>
>alex f

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