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  #1  
Old 03-30-2009, 03:22 AM
Steve Sampson Steve Sampson is offline
 
Join Date: Aug 2005
Location: N. Yorkshire, England
Posts: 1,050
Default Autoplug crush washers?

I am running dual P-mags with auto plugs.

I am reluctant to take the plugs out except to replace, in order to inspect, because I have been unable to find a source of replacement crush washers. Is this just a local problem or have others run into this?

With aviation plugs you can heat/quench and reuse, but it hardly makes sense with auto washers. Thoughts? What are others doing in this situation?

Thanks.
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  #2  
Old 03-30-2009, 05:27 AM
db1yg's Avatar
db1yg db1yg is offline
 
Join Date: Mar 2006
Posts: 629
Default

Hi Steve,

I ran into the same problem with my LS PIII ignition/auto plugs. This is what I did---others may have better solutions.

I cut the original washer off the auto plug (they don't seem to want to come off easily after they have been crushed) using angle wire cutters, measured the thickness and diameter of the washer, and went to my local NAPA auto parts and bought a supply of copper washers of the same dimensions. I now reuse the washers after the heating/quench and plug cleaning process.

Cheers,

db
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  #3  
Old 03-30-2009, 10:16 AM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
Smile Like these...

Quote:
Originally Posted by Steve Sampson View Post
I am running dual P-mags with auto plugs.

I am reluctant to take the plugs out except to replace, in order to inspect, because I have been unable to find a source of replacement crush washers. Is this just a local problem or have others run into this?

With aviation plugs you can heat/quench and reuse, but it hardly makes sense with auto washers. Thoughts? What are others doing in this situation?

Thanks.

..... it seems the auto racing guys like thenm in slightly different thicknesses...

http://www.bteracing.com/Detail.asp?sku=MOR71900

http://www.bteracing.com/image.asp?f...w=200&notall=1

The above are for angled seats. Also available for flat seats like the aviation plugs.



http://www.mawonline.com/google/PDS242660.HTM

Also at Pegasus racing...

http://www.pegasusautoracing.com/pro...asp?RecID=4699

Seems to be more choice at Summit Racing

http://store.summitracing.com/egnsea...4294842813+115

I'm sure that there is some equivalent in Yorkshire.... Ask for "spark plug indexing washers"
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EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
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Last edited by az_gila : 03-30-2009 at 10:28 AM. Reason: added summit
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  #4  
Old 03-30-2009, 12:34 PM
Bob Brown's Avatar
Bob Brown Bob Brown is offline
 
Join Date: Dec 2005
Location: Somewhere in a motorhome
Posts: 581
Default Thanks Gil!

I have asked for this information in the past...and got nowhere...thanks for knowing/looking/posting useable info on this topic. Gil, you're a real asset to this group. Kudo's to you.
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