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Russian plug life and thread size

 
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1906



Joined: 30 Nov 2018
Posts: 58

PostPosted: Thu Aug 13, 2020 9:57 am    Post subject: Russian plug life and thread size Reply with quote

What is the rough life of the Russian plugs? Or is it just a perpetual IRAN? How do you determine they need to be replaced?

Also the manual says the thread size is M14x1.25 but none of the thread chasers in that size I tried seem to work.


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dsavarese0812(at)bellsout
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PostPosted: Thu Aug 13, 2020 10:51 am    Post subject: Russian plug life and thread size Reply with quote

Look for a very worn ground element.

This thread chaser works just fine.
https://www.ecstuning.com/b-oem-tools-parts/metric-spark-plug-thread-chaser/oem25124~omt/?gclid=EAIaIQobChMIsoGJ7uiY6wIVAYvICh3BswMXEAQYBSABEgLpBPD_BwE
The reason you’re having difficulty cleaning the threads is because the Russian plugs do not fit flush with the combustion chamber. Thus the last hole threads tend to build up carbon which makes it difficult to clean the threads with the thread chaser. Plus the Russian plugs are a “cold” plug which you can clearly see when you pull the spark plugs and see the black soot around the insulator and firing element.
This may help you understand how to read your spark plugs.
https://www.championautoparts.com/Parts-Matter/automotive-repair-and-maintenance/how-to-read-spark-plugs.html
Dennis

Sent from my iPhone

Quote:
On Aug 13, 2020, at 2:00 PM, 1906 <zmadwolf(at)gmail.com> wrote:

--> Yak-List message posted by: "1906" <zmadwolf(at)gmail.com>

What is the rough life of the Russian plugs? Or is it just a perpetual IRAN? How do you determine they need to be replaced?

Also the manual says the thread size is M14x1.25 but none of the thread chasers in that size I tried seem to work.


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=497735#497735

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pennington.construction.i
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PostPosted: Thu Aug 13, 2020 11:58 am    Post subject: Russian plug life and thread size Reply with quote

1906

I had a similar issue with thread chasing on my plane.   Once I ran the thread chaser through the hole all was well..  The thread chaser that Dennis referenced is the exact one I purchased on his recommendation.
Also, before you purchase a full set of russian plugs you may want to consider swapping over to the auto plug conversion.  Worth every penny.  
If you want all of the detail you can find a number of owners here that have the auto plugs and wires and love them.
Just a thought if you are about to purchase a bunch of new russian plugs, you may want to consider getting rid of the weak link in the ignition system and making your starts etc more reliable.
Now for the fish story.  Since I put the auto plugs in I am flying 10 knots faster and cut my fuel burn by 30%.......  none of which is true.  It is just a more reliable system.
Mark
On Thu, Aug 13, 2020 at 2:56 PM Anthony Savarese <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:

Quote:
Look for a very worn ground element.

This thread chaser works just fine. 
https://www.ecstuning.com/b-oem-tools-parts/metric-spark-plug-thread-chaser/oem25124~omt/?gclid=EAIaIQobChMIsoGJ7uiY6wIVAYvICh3BswMXEAQYBSABEgLpBPD_BwE
The reason you’re having difficulty cleaning the threads is because the Russian plugs do not fit flush with the combustion chamber.  Thus the last hole threads tend to build up carbon which makes it difficult to clean the threads with the thread chaser.  Plus the Russian plugs are a “cold” plug which you can clearly see when you pull the spark plugs and see the black soot around the insulator and firing element. 
This may help you understand how to read your spark plugs. 
https://www.championautoparts.com/Parts-Matter/automotive-repair-and-maintenance/how-to-read-spark-plugs.html
Dennis

Sent from my iPhone

Quote:
On Aug 13, 2020, at 2:00 PM, 1906 <zmadwolf(at)gmail.com (zmadwolf(at)gmail.com)> wrote:

--> Yak-List message posted by: "1906" <zmadwolf(at)gmail.com (zmadwolf(at)gmail.com)>

What is the rough life of the Russian plugs? Or is it just a perpetual IRAN? How do you determine they need to be replaced?

Also the manual says the thread size is M14x1.25 but none of the thread chasers in that size I tried seem to work.


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=497735#497735

==========================bsp;            ===========================             p;                       -Matt Dralle=====================






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1906



Joined: 30 Nov 2018
Posts: 58

PostPosted: Fri Aug 14, 2020 7:15 pm    Post subject: Re: Russian plug life and thread size Reply with quote

Thanks guys, however I have a good amount of new Russian plugs. No reason to switch yet.

I was actually looking for a die to fix my original TDC tool which doesn't seem to want to go in to the cylinder more than a few threads.


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desmor944



Joined: 31 Jul 2018
Posts: 2
Location: Cape Cod, MA

PostPosted: Sat Aug 15, 2020 5:19 am    Post subject: Re: Russian plug life and thread size Reply with quote

Check out Metric Screw and Tool Company https://www.metricscrewandtool.com/ for that M14 x 1.25 die you are looking for. They also have pre-packaged hardware assortments for YAK aircraft. Knowledgeable staff, great service and incredible inventory.

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markbitterlich(at)embarqm
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PostPosted: Sat Aug 15, 2020 7:14 pm    Post subject: Russian plug life and thread size Reply with quote

Unsolicited reply.

Ask the M-14 owners who have switched to American made plugs and wires how many would switch back (especially the Russian wires and tubes) If given plenty of Russian plugs. Not many.
Identifying and replacing a bad wire is a PITA. The engine runs better, idles with incredible smoothness and is more reliable. You don't wear plugs out. You don't have to re-anneal copper gaskets. You do not clean them. You just replace them from Auotozone, or where-ever.
I believe I still have a set of 18 brand new Russian plugs. I need to put them up for sale!
Good luck with you timing tool. They can be less than ideal.
Mark
N50YK
-------- Original message --------
From: 1906 <zmadwolf(at)gmail.com>
Date: 8/14/20 23:15 (GMT-05:00)
To: yak-list(at)matronics.com
Subject: Yak-List: Re: Russian plug life and thread size

--> Yak-List message posted by: "1906" <zmadwolf(at)gmail.com>

Thanks guys, however I have a good amount of new Russian plugs. No reason to switch yet.

I was actually looking for a die to fix my original TDC tool which doesn't seem to want to go in to the cylinder more than a few threads.


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=497765#497765
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fishmouth500



Joined: 07 Apr 2015
Posts: 42
Location: Southern California

PostPosted: Sat Aug 15, 2020 7:49 pm    Post subject: Russian plug life and thread size Reply with quote

On Sat, Aug 15, 2020 at 8:19 PM mark bitterlich <markbitterlich(at)embarqmail.com (markbitterlich(at)embarqmail.com)> wrote:

Quote:
Unsolicited reply. 

Ask the M-14 owners who have switched to American made plugs and wires how many would switch back (especially the Russian wires and tubes) If given plenty of Russian plugs.  Not many. 
Identifying and replacing a bad wire is a PITA. The engine runs better, idles with incredible smoothness and is more reliable. You don't wear plugs out. You don't have to re-anneal copper gaskets. You do not clean them. You just replace them from Auotozone, or where-ever.
I believe I still have a set of 18 brand new Russian plugs.  I need to put them up for sale!  
Good luck with you timing tool. They can be less than ideal. 
Mark 
N50YK
-------- Original message --------
From: 1906 <zmadwolf(at)gmail.com (zmadwolf(at)gmail.com)>
Date: 8/14/20 23:15 (GMT-05:00)
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: Russian plug life and thread size

--> Yak-List message posted by: "1906" <zmadwolf(at)gmail.com (zmadwolf(at)gmail.com)>

Thanks guys, however I have a good amount of new Russian plugs. No reason to switch yet.

I was actually looking for a die to fix my original TDC tool which doesn't seem to want to go in to the cylinder more than a few threads.


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p="http://www.matronics.com/Navigator?Yak-List" target="_blank">http://wt; http://forums.                                   -Matt Dralle, /contribution" target="_blank">http://www.matronics.com/contribution<============




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dsavarese0812(at)bellsout
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PostPosted: Sat Aug 15, 2020 7:53 pm    Post subject: Russian plug life and thread size Reply with quote

Yeah. I had that problem too with one of my 14 mm thread chasers. I actually found a set of thread files with the correct thread size which helped me repair the 14mm thread chaser. Here’s a single metric thread file.
https://ads.midwayusa.com/product/1007069515?pid=728512&utm_medium=shopping&utm_source=google&utm_campaign=Gunsmithing+-+Tools%2C+Jigs+%26+Fixtures&utm_content=728512&gclid=EAIaIQobChMI5Mq9kP2c6wIVgimzAB3TMwUrEAQYBSABEgI3BvD_BwE
There Is a 4 file thread file set on Amazon that includes the 1.25 metric thread file you need.
https://www.amazon.com/Nicholson-Thread-Repair-Single-Square/dp/B001T4KRHC/ref=asc_df_B001T4KRHC/?tag=hyprod-20&linkCode=df0&hvadid=312139375902&hvpos=&hvnetw=g&hvrand=4073084047853133735&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9012403&hvtargid=pla-473546467674&psc=1&tag=&ref=&adgrpid=63813709322&hvpone=&hvptwo=&hvadid=312139375902&hvpos=&hvnetw=g&hvrand=4073084047853133735&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9012403&hvtargid=pla-473546467674

Dennis

Sent from my iPhone

Quote:
On Aug 14, 2020, at 11:18 PM, 1906 <zmadwolf(at)gmail.com> wrote:

--> Yak-List message posted by: "1906" <zmadwolf(at)gmail.com>

Thanks guys, however I have a good amount of new Russian plugs. No reason to switch yet.

I was actually looking for a die to fix my original TDC tool which doesn't seem to want to go in to the cylinder more than a few threads.


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=497765#497765




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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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kiwi679



Joined: 08 Jul 2011
Posts: 20
Location: Netherlands

PostPosted: Sun Aug 16, 2020 1:53 am    Post subject: Russian plug life and thread size Reply with quote

Hi Mark,
I’m running my Yak with Russian plugs until engine overhaul time. My Sukhoi has western automotive conversion.
I’m interested in buying your Russian plugs.
E-mail : s.dijck(at)planet.nl (s.dijck(at)planet.nl)

cheers Steve
Quote:
On 15 Aug 2020, at 19:44, mark bitterlich <markbitterlich(at)embarqmail.com (markbitterlich(at)embarqmail.com)> wrote:
Unsolicited reply.
Ask the M-14 owners who have switched to American made plugs and wires how many would switch back (especially the Russian wires and tubes) If given plenty of Russian plugs. Not many.

Identifying and replacing a bad wire is a PITA. The engine runs better, idles with incredible smoothness and is more reliable. You don't wear plugs out. You don't have to re-anneal copper gaskets. You do not clean them. You just replace them from Auotozone, or where-ever.

I believe I still have a set of 18 brand new Russian plugs. I need to put them up for sale!

Good luck with you timing tool. They can be less than ideal.

Mark
N50YK

-------- Original message --------
From: 1906 <zmadwolf(at)gmail.com (zmadwolf(at)gmail.com)>
Date: 8/14/20 23:15 (GMT-05:00)
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: Russian plug life and thread size
--> Yak-List message posted by: "1906" <zmadwolf(at)gmail.com (zmadwolf(at)gmail.com)>Thanks guys, however I have a good amount of new Russian plugs. No reason to switch yet.I was actually looking for a die to fix my original TDC tool which doesn't seem to want to go in to the cylinder more than a few threads.Read this topic online here:http://forums.matronics.com/viewtopic.php?p=497765#497765



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_________________
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