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Re: [GMCnet] porous aluminum tranny pan [message #324267 is a reply to message #324255] Sat, 23 September 2017 09:22 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
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Senior Member
Karen, look up Eastwood.com. They will have what you need. Don't get the
rattle can. Get a pint or a quart can and apply it with a brush.
Jim Hupy

On Fri, Sep 22, 2017 at 10:15 PM, wrote:

> Ken:
> If you live in California, you cannot buy Glyptal locally. The VOC's are
> too high, but for what it is, there is NO substitute.
>
> ----- Original Message -----
>
> From: "Ken Henderson"
> To: "GMC Mail List"
> Sent: Friday, September 22, 2017 10:26:06 AM
> Subject: Re: [GMCnet] porous aluminum tranny pan
>
> Karen,
>
> If it were a new pan, I'd probably vote for waterglass. But, like you, my
> Ragusa pan (never yet installed by me) is used. I wouldn't have ANY
> confidence that waterglass would penetrate and cure properly. Instead,
> I've cleaned it as thoroughly with degreasers and pressure washing as
> possible. It is, right now, undergoing 3 hours in a oven at 500*F. I'm
> expecting that to bake out enough of the old ATF to enable glyptal to stick
> to it. Checking sources for that glypal has been a shock -- $21.51 for 225
> ml (> only problem with the glyptal is it's insulating. Not a biggie,
>> but keeping the cooling ability would be nice. Gotta do something cuz
>> it's a mess.
>> ​...
>>
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Re: [GMCnet] porous aluminum tranny pan [message #324287 is a reply to message #324267] Sat, 23 September 2017 21:58 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
Senior Member
Well, good, bad, or indifferent, I've chosen a path with my Ragusa pan.
After last nights 2 hours at 500*F, I cleaned the pan a little more,
Scotch-Brite-ing off the few remaining non-aluminum bits. Then washed it
down with chlorinated brake cleaner and dried it with compressed air.
Shiny bright with no hint of petroleum products on the surface.

Rather than wait for a glyptal order, at $49.99 per quart, I decided to
risk something else: 500*F Duplicolor Ceramic Engine Paint. I gave it 3
good coats, 10-15 minutes apart, then put it in a 300*F oven for 4 hours.
We'll see tomorrow how it looks. I expect it to be "pretty", and hopefully
have a hard, smooth, finish coat on it.

I don't know how to evaluate the durability of the coating except to use
it. I may let it sit overnight in the yard with gasoline in it or
something similar to see if there's any deterioration. It not, then it
will be time to install it and hope.

I'm not doing this completely in the blind. A lot of 'net research
revealed that a lot of different people report having good luck using a
wide variety of paints inside engines. Rustoleum seems to be a favorite.
While I have used various of their products over the years, I'm generally
not a fan, so I explicitly chose another brand -- which I just happened to
have on hand.

Rest assured, everyone will hear about it if it costs me a transmission
some years down the road. :-)

Ken H.
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Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] porous aluminum tranny pan [message #324290 is a reply to message #324287] Sun, 24 September 2017 00:05 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
Karen, Glyptal is an electrical insulator, but not a heat insulator. I have
a probe in my Ragusa pan, and the transmission fluid never exceeds 160
degrees in the pan. So, i would say that your concerns about it insulating
the fluid from the cooling fins are of little consequence.
Jim Hupy

On Sat, Sep 23, 2017 at 7:58 PM, Ken Henderson
wrote:

> Well, good, bad, or indifferent, I've chosen a path with my Ragusa pan.
> After last nights 2 hours at 500*F, I cleaned the pan a little more,
> Scotch-Brite-ing off the few remaining non-aluminum bits. Then washed it
> down with chlorinated brake cleaner and dried it with compressed air.
> Shiny bright with no hint of petroleum products on the surface.
>
> Rather than wait for a glyptal order, at $49.99 per quart, I decided to
> risk something else: 500*F Duplicolor Ceramic Engine Paint. I gave it 3
> good coats, 10-15 minutes apart, then put it in a 300*F oven for 4 hours.
> We'll see tomorrow how it looks. I expect it to be "pretty", and hopefully
> have a hard, smooth, finish coat on it.
>
> I don't know how to evaluate the durability of the coating except to use
> it. I may let it sit overnight in the yard with gasoline in it or
> something similar to see if there's any deterioration. It not, then it
> will be time to install it and hope.
>
> I'm not doing this completely in the blind. A lot of 'net research
> revealed that a lot of different people report having good luck using a
> wide variety of paints inside engines. Rustoleum seems to be a favorite.
> While I have used various of their products over the years, I'm generally
> not a fan, so I explicitly chose another brand -- which I just happened to
> have on hand.
>
> Rest assured, everyone will hear about it if it costs me a transmission
> some years down the road. :-)
>
> Ken H.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Re: porous aluminum tranny pan [message #324292 is a reply to message #324169] Sun, 24 September 2017 05:10 Go to previous messageGo to next message
Chris Tyler is currently offline  Chris Tyler   United States
Messages: 458
Registered: September 2013
Location: Odessa FL
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Senior Member
Have used red Glyptal for years in engine building to seal the surfaces of heads and valley pan. Theory being that it speeds oil return marginally.
I had a bunch of it from a stint long ago as the opns mgr of a specialized electric forklift motor shop. Its much cheaper in bulk.
There is also an [electricly] insulating varnish that is used on the windings that requires heat that would likely work if baked on

The engine enamel would proably work. Key to any of it is meticulous prep. I have seen it used on the lower end of engines where it was blased off in sheets due to the force of oil slung at high RPM- and almost clogged the oil pickup. I dont think you would see that problem in a tranny pan though.

Powder coating would work as well, but its getting pricey locally. I ivested in an old oven and eastwood kit recently.

Cheapest/fastest option? Assuming a good prep, Id probably go with a very thin coat of hi-temp silicone like Permatex Ultra.


76 Glenbrook
Re: [GMCnet] porous aluminum tranny pan [message #324301 is a reply to message #324287] Sun, 24 September 2017 09:10 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma: 5
Senior Member
Ken,
I would also be concerned about the solvent resistance of the ceramic paint over the Glyptal. Eastwood has a similar paint that is good to 650F and they also have it is a 455 Olds color Item# 51683ZP. I would test with ATF, Brake fluid and gas to see if there is any degrading of the paint.

JR Wright
78 GMC Buskirk Stretch
Michigan

> On Sep 23, 2017, at 10:58 PM, Ken Henderson wrote:
>
> Well, good, bad, or indifferent, I've chosen a path with my Ragusa pan.
> After last nights 2 hours at 500*F, I cleaned the pan a little more,
> Scotch-Brite-ing off the few remaining non-aluminum bits. Then washed it
> down with chlorinated brake cleaner and dried it with compressed air.
> Shiny bright with no hint of petroleum products on the surface.
>
> Rather than wait for a glyptal order, at $49.99 per quart, I decided to
> risk something else: 500*F Duplicolor Ceramic Engine Paint. I gave it 3
> good coats, 10-15 minutes apart, then put it in a 300*F oven for 4 hours.
> We'll see tomorrow how it looks. I expect it to be "pretty", and hopefully
> have a hard, smooth, finish coat on it.
>
> I don't know how to evaluate the durability of the coating except to use
> it. I may let it sit overnight in the yard with gasoline in it or
> something similar to see if there's any deterioration. It not, then it
> will be time to install it and hope.
>
> I'm not doing this completely in the blind. A lot of 'net research
> revealed that a lot of different people report having good luck using a
> wide variety of paints inside engines. Rustoleum seems to be a favorite.
> While I have used various of their products over the years, I'm generally
> not a fan, so I explicitly chose another brand -- which I just happened to
> have on hand.
>
> Rest assured, everyone will hear about it if it costs me a transmission
> some years down the road. :-)
>
> Ken H.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: [GMCnet] porous aluminum tranny pan [message #324304 is a reply to message #324301] Sun, 24 September 2017 09:43 Go to previous messageGo to next message
Justin Brady is currently offline  Justin Brady   United States
Messages: 769
Registered: April 2015
Location: Bell Buckle, TN
Karma: 11
Senior Member
If you fill the pan with gas you'll likely have no paint in the morning.
Duplicolor engine enamel is great stuff but long term gas exposure is an issue. I've had it flake off of properly prepared engines when the carb starts leaking heavily. (motorcycle)

I'd fill it with atf, since that's all it's going to see and let it sit for a week or so and check it out.


Justin Brady http://www.thegmcrv.com/ 1976 Palm Beach 455
Re: [GMCnet] porous aluminum tranny pan [message #324305 is a reply to message #324304] Sun, 24 September 2017 09:49 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
Senior Member
Thanks for that experienced report, Justin. I'll try ATF. In fact, I'll
go ahead and drain the transmission into the "new" pan and let it set until
I'm ready to refill before the next trip in a couple of weeks. If it looks
"iffy", I'll keep the old pan (which is one of the Toronado tow option pans
with fore-aft tubes through the bottom for cooling).

Ken H.


On Sun, Sep 24, 2017 at 10:43 AM, Justin Brady wrote:

> If you fill the pan with gas you'll likely have no paint in the morning.
> Duplicolor engine enamel is great stuff but long term gas exposure is an
> issue. I've had it flake off of properly prepared engines when the carb
> starts leaking heavily. (motorcycle)
>
> I'd fill it with atf, since that's all it's going to see and let it sit
> for a week or so and check it out.
> --
> Justin Brady
> http://www.thegmcrv.com/
> 1976 Palm Beach 455
>
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Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] porous aluminum tranny pan [message #324313 is a reply to message #324305] Sun, 24 September 2017 16:43 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Ken,

Keep in mind that the pan may react differently when it's got HOT ATF in it.

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@list.gmcnet.org] On Behalf Of Ken Henderson
Sent: Sunday, September 24, 2017 9:49 AM
To: GMC Mail List
Subject: Re: [GMCnet] porous aluminum tranny pan

Thanks for that experienced report, Justin. I'll try ATF. In fact, I'll
go ahead and drain the transmission into the "new" pan and let it set until
I'm ready to refill before the next trip in a couple of weeks. If it looks
"iffy", I'll keep the old pan (which is one of the Toronado tow option pans
with fore-aft tubes through the bottom for cooling).

Ken H.


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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] porous aluminum tranny pan [message #324316 is a reply to message #324290] Sun, 24 September 2017 18:08 Go to previous messageGo to next message
KB is currently offline  KB   United States
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Registered: September 2009
Karma: 0
Senior Member
James Hupy wrote on Sat, 23 September 2017 22:05
Karen, Glyptal is an electrical insulator, but not a heat insulator. I have
a probe in my Ragusa pan, and the transmission fluid never exceeds 160
degrees in the pan. So, i would say that your concerns about it insulating
the fluid from the cooling fins are of little consequence.



Thanks Jim. I was concerned about the glyptal being able to handle the heat of our application,
so your observation is helpful. I recall Manny saying something about seeing 300F temps in there
at one point, though I can't remember where in the system. That made me concerned the glyptal might not hold up to a
heavy vehicle going up and down big hills with a towd... I think there are alternative products that can
handle the heat and the ATF, but I haven't found a definitive enough version yet. "Silver Seal Fluid Weld"
can supposedly do the job, but it appears to be a thick paste, is just as expensive as glyptal, but
can be bought in smaller quantities.

It appears virtually all modern aluminum cast automotive parts are pre-sealed by various industrial processes,
but those don't typically lend themselves to DIY work. I've also read that in the past, GM, etc, used epoxy paste
or RTF for leaky castings. A paint would be a lot easier. I'll be very interested to hear how Ken's experiment turns out.

thanks,
Karen
1975 26'

Re: [GMCnet] porous aluminum tranny pan [message #324317 is a reply to message #324316] Sun, 24 September 2017 18:35 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
Senior Member
KB wrote on Sun, 24 September 2017 19:08
Thanks Jim. I was concerned about the glyptal being able to handle the heat of our application,
so your observation is helpful. I recall Manny saying something about seeing 300F temps in there
at one point, though I can't remember where in the system. That made me concerned the glyptal might not hold up to a
heavy vehicle going up and down big hills with a towd... I think there are alternative products that can
handle the heat and the ATF, but I haven't found a definitive enough version yet. "Silver Seal Fluid Weld"
can supposedly do the job, but it appears to be a thick paste, is just as expensive as glyptal, but
can be bought in smaller quantities.

It appears virtually all modern aluminum cast automotive parts are pre-sealed by various industrial processes,
but those don't typically lend themselves to DIY work. I've also read that in the past, GM, etc, used epoxy paste
or RTF for leaky castings. A paint would be a lot easier. I'll be very interested to hear how Ken's experiment turns out.

thanks,
Karen
1975 26'


Karen,

The processes used to seal porous castings is costly and time consuming (the same thing as costly to manufacturing). Unfortunately, porous aluminum or magnesium castings are relatively easy to make, but they are not at all desirable. So, most of our casting suppliers (4 total, but one has gone under - that is the one I worked for a division of) set up testing rigs that use high pressure air and a devices to determine leak rate. If even a small portion of the population does not pass, they all get coated. While this is happening, manufacturing is screaming about everything and the clients (me this last time) are just sitting there and pointing to the contract that says "finished castings shall not leak fluids at a detectable level".

I am personally fond of water glass (sodium silicate) as a sealant because I have never seen in fail once the impregnation process is complete. It has no temperature or solubility issues that I know of.

Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
Re: porous aluminum tranny pan [message #324320 is a reply to message #324169] Sun, 24 September 2017 19:30 Go to previous messageGo to next message
Aaron   United States
Messages: 21
Registered: February 2017
Location: Oklahoma
Karma: 0
Junior Member
Karen,

I just installed my new ragusa pan after coating it with Glyptal. Bought a quart, used a little tiny bit for the three coats. I looked for small empty cans to divide what I had left in, but couldn't find anything that I didn't have to buy in bulk. Anyway, I have enough glyptal red paint to do quite a few pans, I'd be glad to share it if someone has a good way to do it. Shipping the quart can around from person to person is probably the slowest and most expensive way to do that, but it would work.

Send me an e-mail if you are interested.


Aaron





78 Royale, rear dinette
Re: [GMCnet] porous aluminum tranny pan [message #324322 is a reply to message #324320] Sun, 24 September 2017 19:49 Go to previous messageGo to next message
k2gkk is currently offline  k2gkk   United States
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Registered: November 2009
Karma: -8
Senior Member
I don't know how much would be needed for a tranny pan, but electronic parts sellers usually carry small bottles of the from General Cement (GC) that hold maybe one liquid ounce. I haven't had any in several decades.

Mac in OKC, OK
"The Money Pit"
'76 ex Palm Beach

Sent from my iPhone

On Sep 24, 2017, at 19:31, Aaron Bush wrote:

Karen,

I just installed my new ragusa pan after coating it with Glyptal. Bought a quart, used a little tiny bit for the three coats. I looked for small empty
cans to divide what I had left in, but couldn't find anything that I didn't have to buy in bulk. Anyway, I have enough glyptal red paint to do quite a
few pans, I'd be glad to share it if someone has a good way to do it. Shipping the quart can around from person to person is probably the slowest and
most expensive way to do that, but it would work.

Send me an e-mail if you are interested.


Aaron




--
78 Royale, rear dinette

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Re: [GMCnet] porous aluminum tranny pan [message #324323 is a reply to message #324317] Sun, 24 September 2017 20:53 Go to previous messageGo to next message
KB is currently offline  KB   United States
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Matt Colie wrote on Sun, 24 September 2017 16:35

I am personally fond of water glass (sodium silicate) as a sealant because I have never seen in fail once the impregnation process is complete. It has no temperature or solubility issues that I know of.


I'd seen some mention that water glass doesn't play well with aluminum due to different rates of expansion.
Any thoughts on that?

thanks,
Karen
1975 26'

Re: [GMCnet] porous aluminum tranny pan [message #324324 is a reply to message #324322] Sun, 24 September 2017 21:18 Go to previous messageGo to next message
KB is currently offline  KB   United States
Messages: 1262
Registered: September 2009
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Senior Member
k2gkk wrote on Sun, 24 September 2017 17:49
I don't know how much would be needed for a tranny pan, but electronic parts sellers usually carry small bottles of the from General Cement (GC) that hold maybe one liquid ounce. I haven't had any in several decades.



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#deta il-bullets


Karen
1975 26'

Re: [GMCnet] porous aluminum tranny pan [message #324327 is a reply to message #324305] Sun, 24 September 2017 22:03 Go to previous messageGo to next message
Adrien G. is currently offline  Adrien G.   United States
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Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
Senior Member
Ken,

Put tranny fluid in the pan, put it back in the oven and bring it up to operating temp, if the outside surface is dry then it should be ok.

Whatever substance is used to seal the inside surface, the gasket surface must also be sealed with it,or some weeping can occur from there.

Aluminum sand castings when heated are porous, aluminum die castings are not.


Ken Henderson wrote on Sun, 24 September 2017 07:49
Thanks for that experienced report, Justin. I'll try ATF. In fact, I'll
go ahead and drain the transmission into the "new" pan and let it set until
I'm ready to refill before the next trip in a couple of weeks. If it looks
"iffy", I'll keep the old pan (which is one of the Toronado tow option pans
with fore-aft tubes through the bottom for cooling).

Ken H.


On Sun, Sep 24, 2017 at 10:43 AM, Justin Brady wrote:

> If you fill the pan with gas you'll likely have no paint in the morning.
> Duplicolor engine enamel is great stuff but long term gas exposure is an
> issue. I've had it flake off of properly prepared engines when the carb
> starts leaking heavily. (motorcycle)
>
> I'd fill it with atf, since that's all it's going to see and let it sit
> for a week or so and check it out.
> --
> Justin Brady
> http://www.thegmcrv.com/
> 1976 Palm Beach 455
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Adrien & Jenny Genesoto 75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
Re: [GMCnet] porous aluminum tranny pan [message #324335 is a reply to message #324320] Mon, 25 September 2017 08:33 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
Senior Member
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.

On Sun, Sep 24, 2017 at 8:30 PM, Aaron Bush wrote:

> Karen,
>
> I just installed my new ragusa pan after coating it with Glyptal. Bought a
> quart, used a little tiny bit for the three coats. I looked for small empty
> cans to divide what I had left in, but couldn't find anything that I
> didn't have to buy in bulk. Anyway, I have enough glyptal red paint to do
> quite a
> few pans, I'd be glad to share it if someone has a good way to do it.
> Shipping the quart can around from person to person is probably the slowest
> and
> most expensive way to do that, but it would work.
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] porous aluminum tranny pan [message #324336 is a reply to message #324323] Mon, 25 September 2017 08:42 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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Location: S.E. Michigan
Karma: 7
Senior Member
KB wrote on Sun, 24 September 2017 21:53
Matt Colie wrote on Sun, 24 September 2017 16:35

I am personally fond of water glass (sodium silicate) as a sealant because I have never seen in fail once the impregnation process is complete. It has no temperature or solubility issues that I know of.


I'd seen some mention that water glass doesn't play well with aluminum due to different rates of expansion.
Any thoughts on that?

thanks,
Karen
1975 26'

Karen,

Your concern is well founded, but at Imtermet (RIP), it was applied as a water-weight viscosity and vacuum impregnated. Then the excess was blown off all the exposed surfaces. This part was the timing gear cover for the inline 6 International engines. Intermet finally lost the contract and filed.

Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
Re: [GMCnet] porous aluminum tranny pan [message #324339 is a reply to message #324324] Mon, 25 September 2017 08:55 Go to previous messageGo to next message
midlf is currently offline  midlf   United States
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Senior Member
KB wrote on Sun, 24 September 2017 21:18


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#deta 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.


Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
Re: [GMCnet] porous aluminum tranny pan [message #324342 is a reply to message #324339] Mon, 25 September 2017 10:13 Go to previous messageGo to next message
KB is currently offline  KB   United States
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Registered: September 2009
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midlf wrote on Mon, 25 September 2017 06:55
KB wrote on Sun, 24 September 2017 21:18


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#deta 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.


I noticed it seemed to have a higher temp rating than glyptal, which is good if its otherwise the same (alkyd paint).
Glyptal only shows 130C, which is odd since you're supposed to bake it at about that temp for 2hrs. Maybe just a
marketing issue. Easier to buy a small bottle of this than deal with a quart can, partial or otherwise.

Thank you Aaron for your kind offer. If I were nearby, I'd take you up on that, but I think the expense/hassle
of shipping probably outweighs the utility if I can use a small bottle of the equivalent stuff. Don't know why
Glyptal doesn't package it in anything smaller.

thanks,
Karen
1975 26'


Re: porous aluminum tranny pan [message #324345 is a reply to message #324169] Mon, 25 September 2017 11:04 Go to previous messageGo to previous message
Aaron   United States
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Registered: February 2017
Location: Oklahoma
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Junior Member
Hard to compete with Amazon. I painted 3 light coats, but even if you do 3 heavy coats 7 ounces should be more than enough. "Heavy" in terms of applying a coat of paint, of course.

78 Royale, rear dinette
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