[Vwdiesel] Block heater location observations.

[Terry Briggs]

Yes, the smaller line that runs diagonally from the head down to the 
water pump
On Jan 15, 2009, at 10:09 PM, James Hansen wrote:

> So you put it in the smaller line then Terry?
> I have to add a block heater to our 05 Passat, and an inline one would 
> definitely be an easier install- and have better head heat in that 
> location.
> -j
>
> Terry Briggs wrote:
>> I've not seen a thread for placement of block heaters other than the 
>> stock location on the back of the block in the freeze plug. Well my 
>> jetta has a broken ground on the stock freeze plug block heater. I 
>> went and bought a block heater that goes into the lower radiator 
>> hose. The book called for the 1" model. Well I got to looking at the 
>> lower radiator hose and it's a bit bigger than 1", even at the narrow 
>> section. I did however notice that the bypass line { I think that's 
>> what it is} that runs from the head  outlet to the water pump is in 
>> fact 1" Now I can't find a reference as to the purpose of this hose, 
>> but it would appear it's a bypass line to circulate warm water back 
>> through the block. Things like that tend to keep head temperatures 
>> more stable and would allow for a decent thermo-siphon effect { if 
>> that's what it is.}
>>   Regardless, I installed the block heater and plugged it in last 
>> night and it seems to work extremely well. I had a melted spot of 
>> snow on the hood this morning. Only having the stock block heater on 
>> the golf for comparison, this method of placement seem much more 
>> effective. At only 400 watts, the head seemed warmer to touch that 
>> with the stock location.
>> At $26 shipped from amazon.com and ease of install, I would recommend 
>> this to anyone needing to replace a bad freeze plug heater that 
>> doesn't work any longer. It is the following heater  "Kat's heater " 
>> Model # 14400  As a plus, I observed it awhile and it has an internal 
>> thermostat of sorts as it cycles on and off, I imagine with the 
>> temperature at the device.
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>
>