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  #1  
Old 04-09-2019, 09:04 AM
Rbb469 Rbb469 is offline
 
Join Date: Jul 2014
Location: 2M8
Posts: 39
Default Spark plug adapters- If you’re in need of read below.

I just purchased spark plug adapters from Protek performance, Inc out of California. Extremely prompt courteous service and fast shipping. Machined in house. A package of 8 for $133.00 shipped to my house. Give these guys a try. www.FlyEFII.com 951.317.3473
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  #2  
Old 06-18-2019, 10:43 AM
sdflier sdflier is offline
 
Join Date: Aug 2006
Location: Sioux Falls, SD
Posts: 72
Default Another good source:

www.brillman.com

Part number B9005-002 (18mm to 14mm solid brass adapter)

$9 each
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  #3  
Old 06-18-2019, 12:05 PM
isosceles isosceles is offline
 
Join Date: Jan 2018
Location: Fremont
Posts: 51
Default

are they any good?
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  #4  
Old 06-18-2019, 04:35 PM
vetterman vetterman is offline
 
Join Date: Oct 2006
Location: TX
Posts: 45
Default Reducers

I’ve been using Brillman reducers for at least 15 years and have installed then on at least 12 planes. So yes they’re good. I’ve never told them what I was using them on, but if they ever ask, it would be for my Allis Chalmers tractor.
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  #5  
Old 06-18-2019, 05:51 PM
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DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
Posts: 8,878
Default

To be frank, I ordered a set of Brillman adapters and sent them back. I'm sure they will work, but they were not as good as adapters from EFII and SDS.
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Last edited by DanH : 06-18-2019 at 05:53 PM.
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  #6  
Old 06-19-2019, 11:49 AM
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smokyray smokyray is offline
 
Join Date: Jan 2005
Location: TX32
Posts: 1,847
Default Not to reason...

Quote:
Originally Posted by Rbb469 View Post
I just purchased spark plug adapters from Protek performance, Inc out of California. Extremely prompt courteous service and fast shipping. Machined in house. A package of 8 for $133.00 shipped to my house. Give these guys a try. www.FlyEFII.com 951.317.3473
Glad U like them but...
I never liked adapters, so I use Denso L14U or Autolite 386 plugs. 25 years on they still work great on my Electroair/ P-Mag's and thread right in.
V/R
Smokey
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  #7  
Old 07-03-2019, 07:42 PM
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N333M N333M is offline
 
Join Date: Apr 2017
Location: central Il
Posts: 69
Default Autolite 386

Smokey,
Hold on a sec..You mean this Autolite 386 18mm plug will work for our Lycomings?..I have a carbed 0-320..160 hp mods..???
I just looked it up and these things are 1.99 at AutoZone!!.. I realize a harness change would be in order..but it the heat range comparable?..are you running them in an lycoming? Im pretty interested in this!!
Don
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  #8  
Old 07-03-2019, 08:09 PM
rv7charlie rv7charlie is online now
 
Join Date: May 2006
Location: Pocahontas MS
Posts: 3,871
Default

I just swapped out my Denso plugs for 386's on my Lightspeed system. At annual (just bought the plane) I found one of the Denso-s about 2/3s of the way backed out of its adapter. Decided the 386s were too easy a solution.
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  #9  
Old 07-04-2019, 12:44 AM
SHIPCHIEF SHIPCHIEF is offline
 
Join Date: Mar 2008
Location: Seattle
Posts: 1,413
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I'm currently trying Champion stock # 526, RD15Y on my RV-8 Parallel valve O-360, 8.5:1 . It's an 18mm resistor plug like the Autolite 386, but also has a projected tip. I'm hoping it's slightly cooler, but I only have a few hours on them, trying both high power, and very low power flight. I won't know much until something happens or it's oil change time and I pull the plugs for a look.
3.99 ea thru Summitracing.com
I also have successfully used Autolite 386 on my Thorp T-18. They stay clean and do not show heat stress on my O-290 with 7:1 compression.
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  #10  
Old 07-04-2019, 06:44 AM
Fly2KiteSurf Fly2KiteSurf is offline
 
Join Date: Apr 2011
Location: Grass Roots Airpark 06FD (central Florida)
Posts: 73
Default Why does e-mag recommend adaptors?

Hello all,

Why do the P-mag folks recommend using adaptors in lieu of using 18mm plugs?

A couple years ago I had a conversation with them at Sun-n-fun, and they reccomended against 18mm plugs.

For me, it's all about safety, not cost or complexity of maintenance, etc...

Thanks,
Sean.
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Sean Reynolds

Purchased RV-3 project, restored, flew for 18 months, sold. Purchased flying RV7, flew for 5 years, sold. Currently building RV-14 quick build.
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