[urq] DO I still use the large round thermostatgasketifIremovethermostat?

[Brandon Rogers]

good call - RTV that.

But I for one would definitely NOT switch to pink stuff.  Too much hassle 
for no reward that I know of....

Brandon

----- Original Message ----- 
From: "Ingo Rautenberg" <i.rautenberg at waratap.com>
To: "steven j" <michellepfeiffersx at yahoo.com>; "Buchholz, Steven" 
<Steven.Buchholz at kla-tencor.com>; <urq at audifans.com>
Sent: Thursday, March 17, 2005 1:46 PM
Subject: Re: [urq] DO I still use the large round 
thermostatgasketifIremovethermostat?


> OK, how about this:  Get yourself some blue or red RTV sealant at your
> favorite auto parts store.  Clean the mating surfaces of the flange and
> thermostat housing.  Do not used the rubber gasket.  Instead, apply the 
> rtv
> to either the  thermostat housing or the flange on the head, let cure for
> about 5 minutes and bolt it right up.  Let it sit overnight and do your
> flushing procedure.  I don't see a problem with this.  Are you just 
> flushing
> the system, or are you changing coolant types (I don't recall from your
> original post).  If you are changing coolant type (like from Audi blue to
> Audi pink), then I'd get soem replacement freeze plugs and remove the 
> lower
> most ones from the block to make absolutely sure you've removed every 
> trace
> of the old (incompatible) coolant.  At least those are my thoughts.
>
> Good luck.
>
> -Ingo
> '91 200q20v...Slightly modified
> '84 Tornado Red Urquattro (sidelined)
> '91 v8 pearl quattro 5-Speed (not exactly stock) :-)
> http://hometown.aol.com/quattringo/index.html
>
> ----- Original Message ----- 
> From: "steven j" <michellepfeiffersx at yahoo.com>
> To: "Buchholz, Steven" <Steven.Buchholz at kla-tencor.com>; 
> <urq at audifans.com>
> Sent: Thursday, March 17, 2005 3:34 PM
> Subject: RE: [urq] DO I still use the large round thermostat
> gasketifIremovethermostat?
>
>
>> Oh this is gettings scary/complex.  I was the original poster on this.
>>
>> I was thinking with the thermostat out it would make it easier for me to
> drain and re-fill the system several times, just dealing with the small
> diameter hose that goes from the resevoir to the bottom rear of the
> radiator.  I'd always thought that it was having the thermostat closed 
> when
> the system is filled that results in air pockets and incomplete filling.
>>
>> I nervous that I'll do more harm than good if I don't completely refill
> the system.  I made this mistake with an old ford.  Filled it up, drove it
> around, thermostat opened, let it cool.  Then I found the radiator very
> empty and  2 more quarts.  The next week  the intake manifold started
> leaking coolant.
>>
>> I think I've run other cars in the past without the thermostat - but they
> had one of those flat paper gaskets.  I havent look at this situation
> carefully but it looks like our round rubber gasket might not stay put
> without the thermostat.
>>
>> steve
>>
>>
>>
>> steve
>> "Buchholz, Steven" <Steven.Buchholz at kla-tencor.com> wrote:
>> ... I understood the desire ... but my point was that it isn't clear to
>> me that the water pump would necessarily do much with no t-stat in place
>> ... I'm pretty sure the t-stat switches the flow from an internal cycle
>> to one that includes the radiator. What happens if all the passages are
>> opened? That's the question I'm posing. Can it create a situation
>> where the pump is not able to send fluid anywhere?
>>
>> Steve
>> >
>> > I thought the original poster (sorry - forget who) just
>> > wanted to flush out
>> > the cooling system and wanted to remove the t-stat to help
>> > flow through the
>> > system and not have it leak at the T-stat....no? And then
>> > re-install t-stat after flushing.....
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