Heat riser block off epoxy & plugs together???
March 5th, 2018, 12:07 AM
#1
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Location: Vancouver BC
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Heat riser block off epoxy & plugs together???
https://www.summitracing.com/int/par...2733/overview/
These plugs ground to fit well not force fitted, then set in with epoxy.
The thought behind this is that a smaller amount of epoxy would be subjeted
to the extreme exhaust temperature.
Some of the hi heat epoxies are not designed to span a large distance.
Again this method is for those that have machined heads not bare core heads.
Another thought would be to tack weld them into place but this method is risky as you can cause warpage
even with a tack.
These plugs ground to fit well not force fitted, then set in with epoxy.
The thought behind this is that a smaller amount of epoxy would be subjeted
to the extreme exhaust temperature.
Some of the hi heat epoxies are not designed to span a large distance.
Again this method is for those that have machined heads not bare core heads.
Another thought would be to tack weld them into place but this method is risky as you can cause warpage
even with a tack.
Last edited by Bernhard; March 5th, 2018 at 12:12 AM.
March 5th, 2018, 08:46 AM
#2
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Location: Edmond, OK
Posts: 15,897
Here are two old threads about blocking the exhaust crossover with epoxy:
https://classicoldsmobile.com/forums...d-product.html
https://classicoldsmobile.com/forums...echniques.html
I don't think you will be able to use epoxy for this application. If you don't want to melt aluminum to fil the exhaust crossover in the heads then just cut a soda/beer can to support the intake manifold gasket at the exhaust crossover. This will block the hot exhaust. Many members have done that succesfully.
https://classicoldsmobile.com/forums...d-product.html
https://classicoldsmobile.com/forums...echniques.html
I don't think you will be able to use epoxy for this application. If you don't want to melt aluminum to fil the exhaust crossover in the heads then just cut a soda/beer can to support the intake manifold gasket at the exhaust crossover. This will block the hot exhaust. Many members have done that succesfully.
March 5th, 2018, 07:07 PM
#3
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Join Date: Mar 2011
Posts: 558
I was thinking about fitting the plug then drilling a 3/8” hole on each side of the plug. Drill 50% of the plug, and 50% of the head on a drill press. Then tap the hole and then get a 3/8” plug with an allen. Then torque down the plug so it fits snug.
Shouldn't go anywhere at that point?
Shouldn't go anywhere at that point?
March 5th, 2018, 07:20 PM
#4
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Join Date: Jul 2012
Location: Vancouver BC
Posts: 2,790
Here are two old threads about blocking the exhaust crossover with epoxy:
https://classicoldsmobile.com/forums...d-product.html
https://classicoldsmobile.com/forums...echniques.html
I don't think you will be able to use epoxy for this application. If you don't want to melt aluminum to fil the exhaust crossover in the heads then just cut a soda/beer can to support the intake manifold gasket at the exhaust crossover. This will block the hot exhaust. Many members have done that succesfully.
https://classicoldsmobile.com/forums...d-product.html
https://classicoldsmobile.com/forums...echniques.html
I don't think you will be able to use epoxy for this application. If you don't want to melt aluminum to fil the exhaust crossover in the heads then just cut a soda/beer can to support the intake manifold gasket at the exhaust crossover. This will block the hot exhaust. Many members have done that succesfully.
Thanks for the links and feedback
March 5th, 2018, 07:21 PM
#5
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Thread Starter
Join Date: Jul 2012
Location: Vancouver BC
Posts: 2,790
I was thinking about fitting the plug then drilling a 3/8” hole on each side of the plug. Drill 50% of the plug, and 50% of the head on a drill press. Then tap the hole and then get a 3/8” plug with an allen. Then torque down the plug so it fits snug.
Shouldn't go anywhere at that point?
Shouldn't go anywhere at that point?
I'm having a hard time visualizing this method.
Thanks for the reply.
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