I  LOVE West System two-part Epoxy ..
and use it to repair all kinds of things.

I like to mix some shavings of something in with it to make a super
strong matrix..
to repair a VW engine block I'd mix aluminum shavings in with it until I
got just the consistency I want.

I even patch concrete with this stuff..
( like a 2 inch divot say )
I mix teak sawdust into the epoxy ..
that repair is so durable ( and sandable ) ..I call it Thermo-nuculear
Concrete .

Especially mixed with any shavings of metal or very hard wood ..
killer stuff !

Personally, I'd rather have a tiny bit of uneveness on the water pump
impeller face in the block, than risk having anything come loose in there.
scott

On 9/27/2014 1:58 AM, Steven Shelton wrote:
> The last time I replaced the thermostat on my 1.9 liter I was alarmed at
> the pitting on the inside of the aluminum thermostat housing.  I don't know
> how likely it is to perforate but  I have wondered if it would be a good
> idea to coat the inside with something to protect it from further
> corrosion.  Thanks, Neil, for the link to West System.  I sent them an
> email asking if they think their product would be applicable for a cooling
> system repair.  I'll let the list know what they say if they respond.
>
> On Fri, Sep 26, 2014 at 7:25 PM, Neil N <musomuso@gmail.com> wrote:
>
>> A list member kindly pointed to this company:
>>
>> http://www.westsystem.com/ss/repair-kits/
>>
>> They have an "Aluminum" repair kit but then I think the WBX case and heads
>> are
>> made of magnesium or some kind of alloy?
>>
>> Just a thought. I likely won't delve into repairing the wear.
>>
>> Neil.
>>
>> On 9/26/14, Dennis Haynes <d23haynes57@hotmail.com> wrote:
>>
>>> That wear is from a past water pump failure.......
>>> A good epoxy can fix this.
>>
>> --
>> Neil n
>>
>> Blog: tubaneil.blogspot.ca
>>
>> '88 Westy http://tinyurl.com/c8rlw6p
>>
>> '81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/
>>
>> Vanagon VAG *Gas* inline-VR Engine Swap Group:
>>
>> http://tinyurl.com/d7gd5ej
>>