[Vwdiesel] Ways of cooling an AAZ

[Pablo Moretti]

Thanks Shawn, you´re not late since I still havn´t found the cause. Now we
took the turbo because the exhaust´s expert said it was not working
properly. Ok, the turbo is gone, so there goes another $ 1000. So, if
searching for a new turbo, not an easy job here, as soon as I have that, to
the exhaust expert and then I expect it will work as it has to be.

Pablo

On Thu, Sep 30, 2010 at 12:12 AM, Shawn Wright <vwdiesels at gmail.com> wrote:

> Sorry, I'm a bit late to this thread, but here's what I've gleaned so far,
> correct me if this is wrong:
>
> You have an AAZ in an A3 Golf with the stock oil-coolant heat exchanger
> mounted on the oil filter flange, but no coolant lines connected to it. I'm
> guessing the temps quoted are for coolant, not oil? I would expect the oil
> to climb faster without these coolant lines  attached, but 100C is nowhere
> near a problem, so I guess you mean coolant.
>
> Did the car come with A/C? If not, it may have the smaller rad, which could
> be part of the problem, but work on the missing hoses first. The proper
> hoses to provide coolant to the oil cooler are common here, but perhaps not
> where you are. You will need these.
>
> In my experience, the stock cooler you have works fine in an A2/A3 chassis
> with everything stock and working properly. My 1.6TD Jetta lasted 480k kms
> with this setup, and never had a problem with overheating. The same engine
> in my Westy did required a larger V6 TDI oil cooler to control temps on very
> long climbs, but that's a much heavier vehicle. Unless you're towing another
> Golf, you should be fine.
>
> Adding an external oil-air cooler with sandwich plate will also work, but
> adds more complexity and possibility of catastrophic failure if one of the
> full oil pressure lines fails. I have one, but have not installed it yet in
> my Westy, partly for this reason, and partly because the larger stock cooler
> is doing well enough (and I'm lazy :-)  (max oil temps now reduced from 275F
> to 250F on long climbs over the Rockies. Usually around 210-220F).
>
> On Thu, Sep 23, 2010 at 7:48 PM, Pablo Moretti <pmoretti at gmail.com> wrote:
>
>>  Hi, I´m still having heat problems with my AAZ on a VW Golf MK3, I´ve
>> already changed thermostat and electro bulb, also cleaned radiator. But at
>> 90 Km/h temp stays at 80ºC, as I accelerate it a bit, reaching 100 km/h
>> temp
>> reaches 100 ºC and continues increasing. Engine sounds a bit stressed,
>> could
>> be that? Since it is an adapted engine I don´t know if gearbox is the
>> appropiate one. Things I´ll try are, first of all connecting the oil
>> cooler
>> since it is disconnected, if that doesn´t work maybe change the exhaust.
>> Also changing gearbox with another ratio trying to stay quieter. I´ve no
>> more ideas and temp is making me crazy. Air temp is about 22 ºC. Any idea?
>>
>> Thanks a lot for any idea.
>>
>> Pablo
>> Montevideo - Uruguay
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>
>
>
> --
> Shawn Wright
>
>