[Vwdiesel] New head gasket

[Shawn Wright]

On 25 Oct 2005 at 9:36, Libbybapa at wmconnect.com <Libbybapa at wmconnect.com> wrote:

> In a message dated 10/24/05 11:24:39 PM US Mountain Standard Time, 
> LBaird119 at aol.com writes:
> 
> 
> > Still not  a big difference but sure could add up or 
> > make a difference in something like a Vanagon!   Every bit counts on 
> > one of those.  
> > 
> 
> A common issue I hear talked about with the TD vanagons is high oil temps.  I
> would like to investigate it further.  On the stock 1.6TD vanagon a
> thermostatically controlled auxiliary waterpump was installed.  Does anyone know
> what other models had a similar unit?  I know I have heard of them on volvo or
> audi. 
>  Also, does the aux pump just increase flow through the whole coolant system, or
> does it change any flow direction?

I understood the pump to (also?) be an 'afterun' pump which helps to cool the 
engine after a hot shutdown. I've noticed my TD engine compartment temps climb 
dramatically after the engine is shutdown. ie: if I remove the lid right away, it's not 
bad, but if I wait 10 minutes after a long run, then remove it, it is much hotter in 
there. I have only seen it once - Serge in Edmonton has one on his stock Euro 
1.6TD transplant into his Syncro. He also has the stock wastegate cooler fan. I think 
he is on the list, so maybe he will chime in. You can see the pic of the pump in the 
'engine compartment photo' in the Factory TD Setup folder. Silver pump looks like a 
gas fuel pump due north of the alternator on the firewall. It appears to pull (push?) 
water from the lower cooler outlet and probably continues onto the heater circuit I 
guess. I have seen several Espar/Webasto/Proheat coolant circ pumps on Ebay 
that would probably work well for this.


Shawn Wright
http://zuiko.sls.bc.ca/~swright
'85 Jetta D 
'88 Westy 1.6TD 5 speed
 (see progress at http://members.shaw.ca/vwdiesels)
'82 Diesel Westy