Date: Wed, 1 May 2013 10:18:21 -0700
Reply-To: John Goubeaux <john@UCSB.EDU>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: John Goubeaux <john@UCSB.EDU>
Organization: UCSB
Subject: Re: Painting the exhaust - High Temp - POR??
In-Reply-To: <BAY152-ds7D4D4A02BEF74803CD8BDA0BC0@phx.gbl>
Content-type: text/plain; charset=ISO-8859-1; format=flowed
I've used Rustoleum Hi Heat paint but as Dennis points out it eventually
comes off. I did coat a brand new set of Dansk pipes when I was doing a
rebuild with the engine out and it really did not last long before it
burns off. The pipes do come with a primer but after the fact I am
wondering if the primer they use is in fact Hi heat ? Meaning did that
shorten the ability of the top coat to resist heat ?
Over all though the Dansk pipes, from my experience, are poorly
manufactured and often do not fit properly and fail. And, it's my
understanding that they are the only after market pipes available ? In
my case the rear manifold hits the rear engine mount bar at startup and
stops of the engine ( eg the clearance is too small). If I was to do it
again I would maybe consider paying for the more expensive stainless
pipes that are being made, as I assume they are being more carefully
made to fit properly.
I'd be interested in hearing if anyone has any experience with the
stainless pipes being made ? eg:
http://www.gowesty.com/ec_view_details.php?id=23768&category_id=&category_parent_id=
-john
On 4/30/13 7:07 PM, Dennis Haynes wrote:
> Unless your planning on doing this say every oil change I wouldn't bother.
> Longest life will be had with regular use. Short drive cycles and letting
> the van sit will also mean the exhaust will rust from the inside out. At
> this point it is most likely a Dansk brand exhaust so in addition to rust
> there will be flange failures or the pipes themselves will crack usually in
> the bend just after the flanges. Just use good hardware and anti seize so
> the parts are easy to change when needed. When the engine pipes need
> replacing consider going to the 86+ exhaust. Changing the rear mount casting
> will also allow you to use the later muffler and supports.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Jeff Lincoln
> Sent: Monday, April 29, 2013 4:03 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Painting the exhaust - High Temp - POR??
>
> So while I'm under the bus working on the clutch I had an exhaust issue to
> fix (rusted through at collector). The headers are crusty but not close to
> rusted through. I'd like to paint them with a POR type paint - POR has a
> couple of High temp options (Black Velvet and POR-20 Aluminum) The first
> rated for 1200° and the other for 1400° - the aluminum says it is salt an
> weather resistant.
>
> So the Aluminum sounds like it fits the bill but POR says to use regular
> POR-15 (as long as the parts don't exceed 450°). I think they didn't catch
> what I was asking them :)
>
> Anyone ever used the aluminum stuff? Or other products?
> Thanks,
>
> Jeff
> '85 GL (Gertie)
> '78 Bus (Melissa) Patty's Bus