Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Placement options for CHT probe

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Kolb-List
View previous topic :: View next topic  
Author Message
ceengland7(at)gmail.com
Guest





PostPosted: Thu Jun 07, 2018 6:22 pm    Post subject: Placement options for CHT probe Reply with quote

On 6/7/2018 8:35 PM, John Fitt wrote:

Quote:
Greetings from Sebastopol, CA
Has anybody used a cylinder head bolt ( immediately next to a spark plug) instead of the probe ring 
under the plug? I am currently using the cylinder head bolts, wanting to eliminate the wear and tear
on the probe ring when checking/changing plugs. Seems that the temp. readings are lower- maybe due to the heat lost near a fin?
FSII 503 dcdi 
EIS monitor
CHT runs around 100-120 deg


John Fitt

From the Lycoming world: Washer-based cht probes on the plugs always indicate significantly higher than probes screwed into the heads. The plug is the hottest spot in the cylinder.
Virus-free. www.avast.com [url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2] [/url]


- The Matronics Kolb-List Email Forum -
 

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:

http://www.matronics.com/Navigator?Kolb-List
Back to top
rascaljohn



Joined: 02 May 2013
Posts: 23

PostPosted: Thu Jun 07, 2018 8:23 pm    Post subject: Placement options for CHT probe Reply with quote

Thanks for the reply. Any way to save on the wear and tear?

Sent from my iPhone

On Jun 7, 2018, at 7:22 PM, Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
Quote:
On 6/7/2018 8:35 PM, John Fitt wrote:

Quote:
Greetings from Sebastopol, CA
Has anybody used a cylinder head bolt ( immediately next to a spark plug) instead of the probe ring
under the plug? I am currently using the cylinder head bolts, wanting to eliminate the wear and tear
on the probe ring when checking/changing plugs. Seems that the temp. readings are lower- maybe due to the heat lost near a fin?
FSII 503 dcdi
EIS monitor
CHT runs around 100-120 deg


John Fitt

From the Lycoming world: Washer-based cht probes on the plugs always indicate significantly higher than probes screwed into the heads. The plug is the hottest spot in the cylinder.

Virus-free. www.avast.com [url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2] [/url]



- The Matronics Kolb-List Email Forum -
 

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:

http://www.matronics.com/Navigator?Kolb-List
Back to top
View user's profile Send private message
gdhelton(at)gmail.com
Guest





PostPosted: Fri Jun 08, 2018 7:32 am    Post subject: Placement options for CHT probe Reply with quote

Your CHT seems very low. Do you have your EIS set for centigrade or Fahrenheit?The most common cause for the disfigurement of spark-plug base rings is over- torque of spark plugs. I was surprised to find out that my engine ( 40hp Hirth 2702 ) only requires 108 inch pounds ( yes, inch pounds) of torque and with the spark-plugs seal ring installed with no anti- sieze compound.
George H.
Mesick, Michigan

Sent from my iPhone

On Jun 8, 2018, at 12:23 AM, John Fitt <jpfitt(at)sbcglobal.net (jpfitt(at)sbcglobal.net)> wrote:
Quote:
Thanks for the reply. Any way to save on the wear and tear?

Sent from my iPhone

On Jun 7, 2018, at 7:22 PM, Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
Quote:
On 6/7/2018 8:35 PM, John Fitt wrote:

Quote:
Greetings from Sebastopol, CA
Has anybody used a cylinder head bolt ( immediately next to a spark plug) instead of the probe ring
under the plug? I am currently using the cylinder head bolts, wanting to eliminate the wear and tear
on the probe ring when checking/changing plugs. Seems that the temp. readings are lower- maybe due to the heat lost near a fin?
FSII 503 dcdi
EIS monitor
CHT runs around 100-120 deg


John Fitt

From the Lycoming world: Washer-based cht probes on the plugs always indicate significantly higher than probes screwed into the heads. The plug is the hottest spot in the cylinder.

Virus-free. www.avast.com [url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2] [/url]




- The Matronics Kolb-List Email Forum -
 

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:

http://www.matronics.com/Navigator?Kolb-List
Back to top
racerjerry



Joined: 15 Dec 2009
Posts: 202
Location: Deer Park, NY

PostPosted: Sat Jun 09, 2018 3:18 am    Post subject: Re: Placement options for CHT probe Reply with quote

Why don't you do a side-by-side test / comparison with the CHT probes in both locations on the same cylinder? A double throw switch temporarily wired in would give you an immediate comparison.

- The Matronics Kolb-List Email Forum -
 

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:

http://www.matronics.com/Navigator?Kolb-List

_________________
Jerry King
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Kolb-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group