porous aluminum tranny pan

Would this insulating varnish from McMaster work? Only $7.25 per can.

https://www.mcmaster.com/#electrical-insulating-varnish/=19jedjl

> > I found this stuff on Amazon. Maybe the same stuff?
> >
> > https://www.amazon.com/MG-Chemicals-Insulating-Varnish-Bottle/dp/B00S4H8V1Q/ref=sr_1_1?ie=UTF8&qid=1506304489&sr=8-1&keywords=glyptol
> > il-bullets
> >
> > Karen
>
>
> Yes, same stuff. This is a class H insulation. It will maintain it's electrical insulating properties up to 180C/356F. "Glyptal" is used to
> paint the inside of utility oil filled transformers. Transformers will not get to 180C but neither will the interior surface of your trans pan as
> it is air cooled on the outside.

--
Dennis S
73 Painted Desert 230
Memphis TN Metro
 
I should have pointed to the green varnish as it is oil resistant but $8.88 per can.

https://www.mcmaster.com/#electrical-insulating-varnish/=19jedjl

> Would this insulating varnish from McMaster work? Only $7.25 per can.
>
> https://www.mcmaster.com/#electrical-insulating-varnish/=19jedjl
>
>
>

> > > I found this stuff on Amazon. Maybe the same stuff?
> > >
> > >
> > > https://www.amazon.com/MG-Chemicals-Insulating-Varnish-Bottle/dp/B00S4H8V1Q/ref=sr_1_1?ie=UTF8&qid=1506304489&sr=8-1&keywords=glyptol
> > > il-bullets
> > >
> > > Karen
> >
> >
> > Yes, same stuff. This is a class H insulation. It will maintain it's electrical insulating properties up to 180C/356F. "Glyptal" is used to
> > paint the inside of utility oil filled transformers. Transformers will not get to 180C but neither will the interior surface of your trans pan as
> > it is air cooled on the outside.

--
Dennis S
73 Painted Desert 230
Memphis TN Metro
 
I have been fighting this same issue for a year or so now. Kept thinking it must be weeping through the porous AL, but how could that be, Grrrrr,
wonder if Jim will honor/swap these out.

Where do I send the bill for many hours of RR, cleaning, gallons of tranny fluid?
--
77 Kingsley
 
Mike,

I believe that these pans are sand cast and from my experience with Harley's sand cast pasts are porous and they weep.

Make believe your GMC is like your Harley, it's not leaking it's marking its spot! ;-)

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of Andy
Sent: Monday, September 25, 2017 4:56 PM
To: gmclist
Subject: Re: [GMCnet] porous aluminum tranny pan

I have been fighting this same issue for a year or so now. Kept thinking it must be weeping through the porous AL, but how could
that be, Grrrrr, wonder if Jim will honor/swap these out.

Where do I send the bill for many hours of RR, cleaning, gallons of tranny fluid?
--
77 Kingsley
 
If you purchased the pan from us , I will send you another one (new),N/C ,
that way it will be cleaner so if you desire to coat the onside, it will be
easier.
Contact us first so we can ship it to you first and have it ready to
install, then return the weeping one. We will credit you for the return
cost.
Since were the largest supplier for Ragusa, I will see how we might have it
coated at their facility.

On Mon, Sep 25, 2017 at 3:19 PM, Rob Mueller
wrote:

> Mike,
>
> I believe that these pans are sand cast and from my experience with
> Harley's sand cast pasts are porous and they weep.
>
> Make believe your GMC is like your Harley, it's not leaking it's marking
> its spot! ;-)
>
> Regards,
> Rob M.
> The Pedantic Mechanic
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
> USA '77 Kingsley - TZE 267V100808
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces] On Behalf Of Andy
> Sent: Monday, September 25, 2017 4:56 PM
> To: gmclist
> Subject: Re: [GMCnet] porous aluminum tranny pan
>
> I have been fighting this same issue for a year or so now. Kept thinking
> it must be weeping through the porous AL, but how could
> that be, Grrrrr, wonder if Jim will honor/swap these out.
>
> Where do I send the bill for many hours of RR, cleaning, gallons of tranny
> fluid?
> --
> 77 Kingsley
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
Well, after 5 hours at 280*F almost full of used ATF, the baked-on
Duplicolor 500*F Ceramic Engine Paint looks good. There is a very faint
difference in color where the ATF was vs exposed to air, but only barely
noticeable. I tried scratching the finish above and below that parting
line, using a nylon scraper. There was no effect on the paint in either
location. I'm sure I could easily penetrate the finish with a sharp metal
scribe, but see no reason to do so.

I'm going to install the Ragusa and run it. I certainly don't anticipate
any problems, but will report if I have any later.

Despite the apparent success of this method, I'd still recommend using
water glass, glyptal, or some other finish known to survive such
environments.

Ken H.

On Mon, Sep 25, 2017 at 9:33 AM, Ken Henderson
wrote:

> If I'd had any idea that small an amount of glyptal would be enough, I'd
> have ordered the 225 mL (7.6 oz) bottle from Amazon Prime for $21.51. That
> would probably be as cheap and certainly less trouble than your proposed
> transhipment.
>
> Since I've already embarked on my own experiment, I'll continue it. I
> just drained about 1/2 a Ragusa pan of ATF from the GMC and placed it in a
> 250*F oven for 5 hours. I'll check for leakage after that cools overnight,
> then clean it thoroughly and examine the paint for changes.
>
> Ken H.
>
>
 
You must log in or register to reply here.
GMCMI Fall 2026 Rally
Applied GMC

Share this page

Share this page
Top Bottom
Back