I just got a termostat from the Bus Depot which is part number 025 121 113F
which is listed in their catalogue as "stock" for ALL vanagons 83-91, with an
opening temperature of 87 degrees celsius.

My question is do the 1.9 liter water-cooled engines, which I have, use the
same thermostat settings as the later 2.0 liters. My Bentley lists the
opening temp of the thermostat at 85 degrees celsius--fully open at 105
degrees celcius. The above listed thermostat from Bus Depot is german
manufactured by BEHR and lists it's opening temp at 87 degrees celcius.

For anyone with the knowledge or microfiche does the 1.9 liter use a
different part number and a slightly cooler thermostat than the 87 degree
thermostat I have just recieved? Does the 2 degrees celcius make a difference
in the cooling of the 1.9 engine? Do the later Vanagons (2.0 liter) use this
cooler 87 degree celsius thermostat, and so is it just considered easier to
use one part number for both engines?

Any information will be appreciated. I want to avoid finding the engine will
run hot and having to replace the thermostat twice. Actually I want to avoid
bleeding the coolant system twice. (BTW In this process I'm replacing the
radiator as well with a new genuine VW unit. But I'm concerned with the
"exact" specifications for the thermostat--because,you know, it's a water
boxer.)

TIA
Jeff
83.5 Westy
somehwere in Nevada