[928uk] Hot water valve

[Vince Dallimore]

Adrian,

When I was in Chicago 2 years ago, I hired a car and drove to Carl’s shop in Horicon. Great visit, saw his race car, work shop and parts store! Needless to say some stuff came back in my suitcase! No idea if it’s an Audi part, but it won’t fail in my life time! 

Regards, 

Vince Dallimore 
M: +44(0)7798 630649

Sent from my mobile

87 S4 auto; 88 S4 manual; 86 S2 (barn find) 

TIPEC Regional Organiser; North London, Herts & South Essex

M: 07798 630649 | E: NLHSE at TIPEC.net | W: www.TIPEC.net
Membership - T: 01787 249295 | E: membership at tipec.lpl-uk.com | W: www.tipec.lpl-uk.com
 
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> On 23 Jun 2019, at 16:56, Adrian Langford <adrian.langford at qualitative.co.uk> wrote:
> 
> Is that the Audi part?
> 
> Metal much better in this application. But if I get another ten years from the plastic one I’ll be happy!
> 
> Adrian
> 
>> On 23 Jun 2019, at 16:50, Vince Dallimore <vm.dallimore at gmail.com> wrote:
>> 
>> 928 motorsports sell a metal version, been good on mine since fitting.  
>> 
>> Regards, 
>> 
>> Vince Dallimore 
>> M: +44(0)7798 630649
>> 
>> Sent from my mobile
>> 
>> 87 S4 auto; 88 S4 manual; 86 S2 (barn find) 
>> 
>> TIPEC Regional Organiser; North London, Herts & South Essex
>> 
>> M: 07798 630649 | E: NLHSE at TIPEC.net | W: www.TIPEC.net
>> Membership - T: 01787 249295 | E: membership at tipec.lpl-uk.com | W: www.tipec.lpl-uk.com
>>  
>> Follow us on twitter   @porsche_tipec
>> 
>>> On 23 Jun 2019, at 16:23, Adrian Langford via 928uk <928uk at lists.928.org.uk> wrote:
>>> 
>>> My HVAC generally functions well, with icy aircon.
>>> 
>>> But with hot weather (finally!) arriving, I’d noticed some warm air coming out of bottom of centre vent.
>>> 
>>> This is often sign of leaking hot water valve, a part I had replaced as preventive maintenance almost ten years and 16000 miles ago. It’s a plastic disc valve, prone to leaking given temperature of the water coming out of back of head on way to heater matrix.
>>> 
>>> The Porsche part no is 928 574 573 03, but this time round I found the identical Mercedes part on eBay for £16.49. It’s for the W201 190 and is Merc part 000 830 57 84. Came in sealed bag from the original manufacturer, Meyle. My copy of PET is an old one so the prices aren’t up to date, even so the Porsche part shows as costing around €75 so this is a decent saving!
>>> 
>>> I tested the suspect part I removed by pulling a vacuum on it to close the disc, and pouring water in at top. It drips out the bottom at a fairly slow rate, but I bet this would be much more significant at pressure and temp in the actual car.
>>> 
>>> Hope this is useful for anyone else fettling vac this summer!
>>> 
>>> Adrian
>>> 
>>> 
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