'07 A3 2.0t Oil Consumption

[Huw Powell]

I would buy into the volume of flow issue - and thicker cold oil can't 
get through the valve as quickly, so obviously at some point the valve 
no longer "caps" the pressure.

John Cody Forbes wrote:
> I have no explanation for it, but in the morning I can take a video of 
> one of the Porsche's here (they have 3 separate relief valves, IIRC the 
> highest is at 6bar) making 140psi of oil pressure at ~2000rpm, then 
> tapering down to ~80psi when it warms up. My only thoughts is that it 
> must either overcome the volume capacity of the relief valve or overcome 
> the spring in the relief valve (maybe a combination).
> 
> -Cody
> 
> --------------------------------------------------
> From: "Huw Powell" <audi at humanspeakers.com>
> Sent: Thursday, March 25, 2010 4:11 PM
> To: "Cody Forbes" <cody at 5000tq.com>
> Cc: "Jeffrey Brown" <jeffrey.r.brown at gmail.com>; "Quattro list" 
> <quattro at audifans.com>
> Subject: Re: '07 A3 2.0t Oil Consumption
> 
>>
>>> Thicker oil provides more  protection, but doesn't get in some of the 
>>> tight tolerance areas that  newer engines have as well as bringing 
>>> the oil pressure dangerously  high on cold mornings
>>
>> How can that be when there is a 5 bar pressure relief valve in the oil 
>> pump?
>>
>> -- 
>> Huw Powell
>>
>> http://www.humanspeakers.com/audi
>>
>> http://www.humanthoughts.org/ 
> 
> 

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/