Re: [T3] Type 3 & Type 1 Cooling Systems

[Russell Wolfe <russella@netins.net>]

I have seen/rebuilt many a type III engine because the bellows were either bad,
or had come off. (sagging motor mounts). When the bellows are not intact, the
cooling system is pulling it's air directly off the muffler. :(
 Russ Wolfe
'71 FB



On Tue, 28 Mar 2000, Ian Ruinaard wrote:
> Just a question I would like to raise about the Type 3 vs the Type 1 cooling
> systems. There is a lot of talk about engine swaps (using Type 4 engines
> etc...)
> 
> As far as I understand the Type 1 (Beetle) has a Ducted Outlet type cooling
> system - this is whey the bottom of the beetle engine compartment has all
> the sealing tin around it. & the intake grille is high up below the rear
> window - so you wont suck the hot air that has been exhausted under the
> motor back thru the engine & overheat.
> On the other hand the Type 3 (Fastback Squareback Notch etc..) has a Ducted
> Inlet type cooling sytem - the car sucks the cool air in the side vents & it
> is suchked into the engine from behind ( Thru the rubber bellows at the back
> of the engine compartment & then exhausted below the motor.
> 
> >From this as I understand the following:
> If you run a beetle with a Baja conversion & you do not fit the fibreglass
> intake grille cover supplied with the kit you run the risk of overheating
> the motor.
> If You run a Type 3 without the rubber bellows installed at the back of the
> motor it will overheat.
> If you run a Type 3 motor in a Buggy or Sandrail it will also overheat.
> 
> The one I am not too sure about is the Type 4 system - I have never looked
> at them in detail.
> 
> Anybody got any comments; agree/disagree?
>  
> Ian 
> iruinaard@ppc.co.za
> 
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