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Epoxy/metal filler that will hold up in exhaust port? #2678256
07/17/19 09:44 AM
07/17/19 09:44 AM
Joined: Jan 2003
Posts: 1,136
Columbus, GA
Michael Ecks Offline OP
super stock
Michael Ecks  Offline OP
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Joined: Jan 2003
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Columbus, GA
Does such a thing exist? I have a pair of aluminum heads I bought used, not noticing that the exhaust ports have been opened up nearly to W2 size. With the standard headers, this would have a good amount of exhaust gas flow crashing into the header flange. I think there is enough material to seal, but I would prefer to be able smooth out the transition from the exhaust runner into the header.

This will be for a driver/street stroker. So it has to be a fix that will last more than a race or a season


"The happiness of your life depends upon the quality of
your thoughts" ~ Roman Emperor Marcus Aurelius
Re: Epoxy/metal filler that will hold up in exhaust port? [Re: Michael Ecks] #2678261
07/17/19 10:03 AM
07/17/19 10:03 AM
Joined: Apr 2003
Posts: 2,595
Tulsa, Oklahoma
340Cuda Offline
master
340Cuda  Offline
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Joined: Apr 2003
Posts: 2,595
Tulsa, Oklahoma
I don't think what you are looking for exists.

However aluminum heads can be easily welded up.

Re: Epoxy/metal filler that will hold up in exhaust port? [Re: Michael Ecks] #2678293
07/17/19 12:03 PM
07/17/19 12:03 PM
Joined: Dec 2003
Posts: 18,135
Trumussia
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jcc Online content
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Trumussia
The max I have ever read about epoxy based is around 500F, and that is expensive, so my answer to your question is, no.


"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." Plato
Re: Epoxy/metal filler that will hold up in exhaust port? [Re: jcc] #2678694
07/18/19 01:01 PM
07/18/19 01:01 PM
Joined: Jan 2012
Posts: 1,925
Stuttgart, Arkansas
rickseeman Offline
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rickseeman  Offline
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Stuttgart, Arkansas
I wouldn't bother with epoxy/metal when the known fix is easy. Weld and grind.


2011 Drag Pak Challenger
Re: Epoxy/metal filler that will hold up in exhaust port? [Re: rickseeman] #2678888
07/18/19 09:09 PM
07/18/19 09:09 PM
Joined: Aug 2006
Posts: 2,024
God's Country Maryland
GODSCOUNTRY340 Offline
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God's Country Maryland
Grind the header flange to match the ports.


I love the smell of Deer guts in the morning, it smells like... VICTORY!
Re: Epoxy/metal filler that will hold up in exhaust port? [Re: GODSCOUNTRY340] #2679013
07/19/19 09:11 AM
07/19/19 09:11 AM
Joined: Jan 2003
Posts: 13,561
Eagle, Idaho
Neil Offline
I Live Here
Neil  Offline
I Live Here

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Posts: 13,561
Eagle, Idaho
Yes, you can weld on the outside of the header tube/flange connection and grind the inside opening bigger to a point.

Re: Epoxy/metal filler that will hold up in exhaust port? [Re: Neil] #2679154
07/19/19 03:40 PM
07/19/19 03:40 PM
Joined: Oct 2005
Posts: 7,148
Ontario, Canada
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Stanton Offline
Don't question me!
Stanton  Offline
Don't question me!
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Joined: Oct 2005
Posts: 7,148
Ontario, Canada
Originally Posted by Neil
Yes, you can weld on the outside of the header tube/flange connection and grind the inside opening bigger to a point.


I can't see the headers making it around the block after this mod !! The weld on the thin gauge tube will make them brittle - the main reason virtually every header is welded on the inside of the flange.

Re: Epoxy/metal filler that will hold up in exhaust port? [Re: Stanton] #2679168
07/19/19 04:20 PM
07/19/19 04:20 PM
Joined: Jan 2003
Posts: 12,500
So. Burlington, Vt.
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fast68plymouth Offline
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fast68plymouth  Offline
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So. Burlington, Vt.
Obviously, the correct solution is to weld the heads up.

Whether or not the heads in question are worth the time and $$$ to go through that is another story.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Epoxy/metal filler that will hold up in exhaust port? [Re: fast68plymouth] #2679181
07/19/19 04:58 PM
07/19/19 04:58 PM
Joined: May 2019
Posts: 804
nowhere
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Sniper Offline
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Sniper  Offline
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Originally Posted by fast68plymouth
Obviously, the correct solution is to weld the heads up.



They make W2 headers you know,

Re: Epoxy/metal filler that will hold up in exhaust port? [Re: Sniper] #2679204
07/19/19 06:52 PM
07/19/19 06:52 PM
Joined: Jan 2003
Posts: 12,500
So. Burlington, Vt.
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fast68plymouth Offline
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fast68plymouth  Offline
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So. Burlington, Vt.
Originally Posted by Sniper
Originally Posted by fast68plymouth
Obviously, the correct solution is to weld the heads up.



They make W2 headers you know,


Don’t dedicated W2 headers use the W2 bolt pattern?


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Epoxy/metal filler that will hold up in exhaust port? [Re: fast68plymouth] #2679217
07/19/19 07:28 PM
07/19/19 07:28 PM
Joined: May 2019
Posts: 804
nowhere
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Sniper Offline
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Sniper  Offline
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nowhere
Drilling holes is easier than welding exhaust ports.

Re: Epoxy/metal filler that will hold up in exhaust port? [Re: Sniper] #2679251
07/19/19 09:18 PM
07/19/19 09:18 PM
Joined: Jan 2003
Posts: 14,115
So Near, Yet So Far
topside Offline
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topside  Offline
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So Near, Yet So Far
W2 to LA header flange adapters, if you have room to space your header outwards.

Re: Epoxy/metal filler that will hold up in exhaust port? [Re: Michael Ecks] #2710257
10/26/19 08:04 PM
10/26/19 08:04 PM
Joined: Dec 2003
Posts: 18,135
Trumussia
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jcc Online content
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Joined: Dec 2003
Posts: 18,135
Trumussia
Originally Posted by Michael Ecks
Does such a thing exist? I have a pair of aluminum heads I bought used, not noticing that the exhaust ports have been opened up nearly to W2 size. With the standard headers, this would have a good amount of exhaust gas flow crashing into the header flange. I think there is enough material to seal, but I would prefer to be able smooth out the transition from the exhaust runner into the header.

This will be for a driver/street stroker. So it has to be a fix that will last more than a race or a season


This is a new product from a company i buy material from, it's worth looking at, as there is nothing else available i am aware of.

#575-N 3000F

FEATURES
Ceramacast™ 575-N is a fine-grain, alumina-filled, ceramic compound ideal for potting high temperature electrical components including lamps, heaters, vacuum feed-thrus, PTC devices, rheostats, and temperature sensors. Material properties include a temperature resistance to 3000 °F (1650 °C), dielectric strength of 150 Volts/Mil, compressive strength of 11,800 psi, and excellent chemical and moisture resistance.

Ceramacast™ 575-N is supplied in powder form and is mixed in a ratio of 100 parts powder to 13-15 parts water. It is easily dispensed through pressurized dispensing equipment and hydraulically sets in 16 hours at room temperature and cures fully at 250 °F in 1-2 hours. Cured material exhibits a porosity of less than 2% and an extremely low shrink rate of less than 0.3% at 1000 °F.

Ceramacast™ 575-N is available from stock in quart, gallon and five-gallon containers.

Please contact Aremco's Technical Sales Department at technical@aremco.com for more information about this advanced high temperature adhesive.

https://www.aremco.com/wp-content/uploads/2018/05/A04_18.pdf

.



"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." Plato

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