Date:         Fri, 26 Sep 2014 11:52:32 -0700
Reply-To:     Neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Neil N <musomuso@GMAIL.COM>
Subject:      Re: Coolant Pump: wear at case
Comments: To: Brett Ne <brettn777@gmail.com>
In-Reply-To:  <CAPAEXFe8icYSOcAmx+hyawLH0=3=vsXJLoAh11ZhJS2Ac1Ruyw@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

Thanks Brett. I wondered if drilling small holes or at least
scuffing the surface well, would help epoxy adhesion.
I likely won't repair the surface.

WBX coolant pump images from thesamba:
http://images.thesamba.com/vw/gallery/pix/442804.jpg
http://images.thesamba.com/vw/gallery/pix/440570.jpg

@ the list: Did the OEM pump have a dish shaped impeller?
If so, I now see how the previous damage was done.
My new pump doesn't have a dish type impeller that I'm aware of.



On 9/26/14, Brett Ne <brettn777@gmail.com> wrote:
> If I were to use some kind of epoxy to rebuild the missing metal, I would
> drill a number of shallow holes at an angle using a tiny drill bit to give
> the epoxy a good secure bite into the base metal.  In addition, I would mix
> in some fine glass fibers with the epoxy to help keep smaller chunks from
> cracking  apart and flowing through the cooling system.
>
> That said, I don't think that I'd bother messing with it.  I think that the
> only way you'd see any significant loss in cooling capacity is if the
> gouging is continuous from the outer portion of the housing to the inner
> portion, which would allow pressure backflow into the input portion of the
> impeller.
>
>
>
>
> --
> Brett in Portland, OR
> "Albert" '82 VanaFox I4 Riviera
>


--
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