Can I use PVC in a coolant hose?

[timjmcconnell at gmail.com (Timbo)]

Yeah - for the long term - what I want to do is have the aluminum bung
welded to the outlet on the head. that's the real way to go.

I boiled another PVC T I had for about 30 minutes. It stayed fine -
but I could compress it a little bit with a fork - it was slightly
springy.

My Home Depot has some interesting EZ-sweat copper joints. They have
beads on the ends of the joints that are full of solder. These beads
are copper, and on the outside like this:

-----n--
-----u--

and inside the pipe is the solider.

That bead would make the radiator hose connections perfect. I just
don't know if the solder would mess everything up.

--Timbo

On 5/7/06, Eric Person <scirocco25@gmail.com> wrote:
> well, im pretty sure that you can get the same pieces that you made from
> pvc in copper or brass.  That might be a safer option for the long term.
>
> Timbo wrote:
> > Yeah - but I like the GM one!!! Besides - I think I would have to swap
> > to a digifant sensor - and every car I've found has those weird
> > plastic outlet flanges on them with the spring clip crap.
> >
> > On 5/7/06, Eric Person <scirocco25@gmail.com> wrote:
> >
> >> Ive read that pvc is good up to 140 F, while cpvc is good up to 210 F.
> >> Im not sure at what pressures these numbers came from, but if it was me,
> >> I would switch to either copper with a t-fitting with threads for the
> >> sensor, or just tap the aluminum housing to accept the sensor.
> >>
> >> You know that you can use the stock VW coolant temp sensor right?
> >> Its not that hard to use easytherm.
> >>
> >> Eric
> >>
> >> Timbo wrote:
> >> > Good idea. I'll try the pot o water thing right now and see...
> >> >
> >> > On 5/7/06, DY Wong <sailingfc@dslextreme.com> wrote:
> >> >
> >> >> I don't think the PVC will be good.  I think there is a PVC for hot
> >> >> water,
> >> >> call CPVC.  This is made for hot water in your house.  House water
> >> from a
> >> >> water heater is not boiling.  The coolant in a typical engine can
> >> easily
> >> >> past the boiling point. And the underhood temps could be even
> >> higher.  I
> >> >> guess one way to test this is take a piece of PVC and throw it into a
> >> >> pot of
> >> >> boiling water for a while and see if it gets soft or changes.
> >> >>
> >> >> Good Luck.
> >> >>
> >> >> -Dick-
> >> >> 78 Scirocco
> >> >> Original Owner
> >> >> 95 Passat GLX
> >> >> Second Owner
> >> >>
> >> >>
> >> >> Timbo wrote:
> >> >> > I did this - thinking it was pretty frikin slick...
> >> >> >
> >> >> >
> >> >>
> >> http://www.vintagewatercooleds.com/tech/Techtips/Timbotechnotes/EFI/pics/wir
> >>
> >> >>
> >> >> ing1/CLT.jpg
> >> >> >
> >> >> >
> >> >> > But - somebody said that the PVC won't stand up to the heat.
> >> Should I
> >> >> > have used copper? Or should I just give up and tap the coolant
> >> outlet
> >> >> > (which I don't want to do)
> >> >> >
> >> >> > --Timbo
> >> >> >
> >> >> > --
> >> >> > Timbo!
> >> >> > Location: Glenside, PA!
> >> >> > www.vintagewatercooleds.com/tech
> >> >> --
> >> >> No virus found in this outgoing message.
> >> >> Checked by AVG Free Edition.
> >> >> Version: 7.1.392 / Virus Database: 268.5.5/333 - Release Date:
> >> 5/5/2006
> >> >>
> >> >>
> >> >
> >> >
> >> > --
> >> > Timbo!
> >> > Location: Glenside, PA!
> >> > www.vintagewatercooleds.com/tech
> >> >
> >> > _______________________________________________
> >> > Scirocco-l mailing list
> >> > Scirocco-l@scirocco.org
> >> > http://neubayern.net/mailman/listinfo/scirocco-l
> >> >
> >>
> >
> >
> > --
> > Timbo!
> > Location: Glenside, PA!
> > www.vintagewatercooleds.com/tech
> >
>


--
Timbo!
Location: Glenside, PA!
www.vintagewatercooleds.com/tech