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Re: [T3] Eberspacher heater questions

On 22 Dec 2005 at 21:51, Russ Wolfe wrote:

> On Thu, 2005-12-22 at 21:23, Jim Adney wrote:
> > On 22 Dec 2005 at 17:09, Russ Wolfe wrote:
> > 
> > > Another trick with a fresh air heat engine, is to leave the heaters
> > > turned off for a minute or so. This way, you are giving the exhaust
> > > manifolds a chance to warm up a little. If you just start dumping cold
> > > air over them right away, they seem to take longer to warm up.
> > 
> > That may be the way beetle HEs work (I really don't know), but the 
> > type 3 HEs are different. They get cold air thru them ALL the time. 
> > Shutting off the heat just dumps the heated air out of them at the 
> > top front end of the HE.

> But not as much as if you have the heaters levers cranked all the way
> open, and dumping that cold air into the car. Those caps over the
> outlets are very restrictive.

I suspect (but really don't know) that while the tubes to the passenger 
compartment are much larger they are also much longer, so that the flow 
restriction is about the same.

 Am I correct in believing that the beetle HEs don't work this way? (ie, they 
don't have that relief valve?)

Jim Adney
Madison, WI 53711-3054

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