Author Topic: 110 annealed copper sheet  (Read 189 times)

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Offline KilliansRedLeo

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110 annealed copper sheet
« on: August 01, 2013, 02:55:19 pm »
We have been experiment with using 110 soft copper shim stock for base gaskets because gasket thickness can be very tightly controlled. We have had quite good results using copper. No gasket creep under pressure and a good seal.

The copper material is somewhat pricey but better control than factory/after market gaskets. Used to be used a lot for base gaskets in race motorcycles which is where the basic idea came from.

Just wondering what others think of this idea and if anyone else has used this method?
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline Cut4fun .

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Re: 110 annealed copper sheet
« Reply #1 on: August 01, 2013, 03:29:09 pm »
Seen the copper base gaskets used in Racesaws too. 
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Offline turbo885

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Re: 110 annealed copper sheet
« Reply #2 on: August 01, 2013, 10:04:19 pm »
That is what i had to use in my pulling tractor it was 3-9/16" stock bore. we toss the sleeves and bore the block to       4-1/4" you cant get a gasket for that large of a bore it was a lot of hours with a die grinder cutting the copper .
I think i would use copper kote gasket spray on it copper is a little hard to keep sealed without it (might not be an issue with a saw we run outrageous compression)
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Offline KilliansRedLeo

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Re: 110 annealed copper sheet
« Reply #3 on: August 02, 2013, 10:37:10 am »
Thanks for the copper kote tip! Don't know exactly what the compression will be when finished. Should know tomorrow since I will be doing the machining on the piston today. We need .0235 gasket to get .020 when assembled. We will be using two gaskets out of copper .012. So should be able to cut them out with gasket shears and a leather punch.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline turbo885

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Re: 110 annealed copper sheet
« Reply #4 on: August 02, 2013, 10:55:59 am »
a saw gskt wont be bad i had oil and water ports and bolt holes it took a lot of hours of cutting that copper kote is real good stuff
smittys saw and mower repair wampum pa
dealer for forester,laser,stens and oregon products
and wholesale firewood bundles.

Offline KilliansRedLeo

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Re: 110 annealed copper sheet
« Reply #5 on: August 02, 2013, 12:35:15 pm »
Both permatex and KW make the stuff. What brand do you suggest?
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline turbo885

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Re: 110 annealed copper sheet
« Reply #6 on: August 02, 2013, 01:15:20 pm »
i think mine is peratex i will have to look
smittys saw and mower repair wampum pa
dealer for forester,laser,stens and oregon products
and wholesale firewood bundles.

 

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