Date: Sat, 13 Oct 2012 15:24:36 -0400
Reply-To: "aka.bugle" <aka.bugle@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "aka.bugle" <aka.bugle@GMAIL.COM>
Subject: Re: Larger Audi a/t cooler fits transporter
In-Reply-To: <BAY152-ds19A8A31C2D25B9A891183FA0730@phx.gbl>
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'm not going to submerge it (probably hard to get water out of the atf side
of the cooler.) I am going to apply 30 psi to the water side w/ a bicycle
pump on one side and a long hose and gauge on the other side. see if it
holds 30 psi overnight.
On Sat, Oct 13, 2012 at 11:11 AM, Dennis Haynes <d23haynes57@hotmail.com>wrote:
> Oil-water heat exchangers can leak due to both temperature and pressure.
> The
> Leaks can also be so small they can't readily be detected. What method are
> you planning? I would test the coolant side (easiest to connect to) by
> applying shop air and submerging the unit and look for bubbles. After it is
> installed and running have oil test performed on the ATF. They will detect
> if any antifreeze is getting in there. For the engine oil cooler since the
> engine oil pressure is higher than the cooling system pressure a failure
> shows as oil in the coolant.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> aka.bugle
> Sent: Friday, October 12, 2012 8:55 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Larger Audi a/t cooler fits transporter
>
> Sweet!
> Do we all agree that 30psi is sufficient to test the water side of these
> coolers?
>
> On Fri, Oct 12, 2012 at 8:04 PM, Dennis Haynes
> <d23haynes57@hotmail.com>wrote:
>
> > Yes the larger cooler should work better. Most of the heat is
> > generated in the torque converter and it does a great job cooling
> > itself with those attached fins. The water to oil cooling approach is
> > a bit of an interesting set up. For the most part the transmission
> > cooler is in parallel with the radiator. The coolant going to it is
> > the same as that going into the radiator. It is the flow (volume) that
> > determines the cooling capacity and when underway (radiator has
> > sufficient air flow) the coolant flow will be dependent on load and
> > speed. Higher load = more cooling!
> >
> > Dennis
> >
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
> > Behalf Of aka.bugle
> > Sent: Friday, October 12, 2012 6:06 PM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: Larger Audi a/t cooler fits transporter
> >
> > Have to pressure test it... but it fits well and is about 3/4" thicker...
> > so must be better at cooling eh?
> > part # 087.409.061E
> >
> > --
> > Best Regards,
> > ~david
> >
> >
>
>
> --
> Best Regards,
> ~david
>
>
--
Best Regards,
~david
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