 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
Dana
Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA
|
 Posted: Mon Sep 22, 2008 4:12 pm Post subject: EGT probe location |
 |
|
According to the Cuyuna manual, the EGT probe should be 1.5" from the
exhaust gasket for the #1 cylinder. However, mine is located (by a
previous owner) at the intersection of the two pipes, about 6" from the
gasket(s). What I'd like to know is how much does that affect the
indicated temperatures?
I've jetted to keep the full throttle EGT at or below 1200°F (Cuyuna
specifies 1200 as "best HP" and 1275 as max), and the plug color seems to
confirm I've got it right. When I slightly close the throttle so the
needle drops into the jet it rises slightly as I'm told it should, and it
runs quite a bit cooler at cruise. CHT is fine too, around 300°. Haven't
had any engine problems except for the sudden stoppage a few months ago
which I now attribute to a bad carb float needle. It's a basic sensor, in
the EGT/tach 2" combo gauge. Relocating it is no big deal, but I'd rather
not do it until I have the exhaust off for some other reason anyway.
-Dana
--
Sometimes you're the windshield, sometimes you're the bug.
| | - 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 |
|
 |
jbhart(at)onlyinternet.ne
Guest
|
| Posted: Mon Sep 22, 2008 5:27 pm Post subject: EGT probe location |
|
|
At 08:07 PM 9/22/08 -0400, you wrote:
| Quote: |
According to the Cuyuna manual, the EGT probe should be 1.5" from the
exhaust gasket for the #1 cylinder. However, mine is located (by a
previous owner) at the intersection of the two pipes, about 6" from the
gasket(s). What I'd like to know is how much does that affect the
indicated temperatures?
|
Dana,
I located a second EGT probe about six inches further along the pipe on the
Victor 1+. This EGT always reads higher that the one that is installed
closer to the engine. If the engine is running rich, the new EGT will read
as much as 125 degrees higher.
Jack B. Hart FF004
Winchester, IN
| | - 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 |
|
|
Dana
Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA
|
| Posted: Mon Sep 22, 2008 5:39 pm Post subject: EGT probe location |
|
|
At 10:26 PM 9/22/2008, Jack B. Hart wrote:
| Quote: | I located a second EGT probe about six inches further along the pipe on the
Victor 1+. This EGT always reads higher that the one that is installed
closer to the engine. If the engine is running rich, the new EGT will read
as much as 125 degrees higher.
|
Makes sense, if fuel is still burning in the exhaust. How much higher does
it read if it's _not_ running rich?
-Dana
--
In America, anyone can become president. That's one of the risks you take.
| | - 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 |
|
|
jim
Joined: 03 Nov 2006
Posts: 107
Location: N. Idaho
|
| Posted: Mon Sep 22, 2008 7:08 pm Post subject: EGT probe location |
|
|
I had a Cuyuna 430R on a Quicksilver MX until 2 years ago. It had the EGT
probe at the "Y" also. I relocated it to 2" from the piston, which may be
1.5" from the exhaust gasket. The temps came down quit a bit. I can't
remember how much, but probably 150-200 deg F. The EGT also became much
more responsive with power changes, choke, etc. If you haven't already,
you definitely need to relocate it. Where it is is better than no EGT,
but not by much.
Jim D.
N. Idaho
At 08:07 PM 9/22/08 -0400, you wrote:
| Quote: |
According to the Cuyuna manual, the EGT probe should be 1.5" from the
exhaust gasket for the #1 cylinder. However, mine is located (by a
previous owner) at the intersection of the two pipes, about 6" from the
gasket(s). What I'd like to know is how much does that affect the
indicated temperatures?
|
| | - 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 |
|
_________________
Jim
N. Idaho |
|
| Back to top |
|
|
jbhart(at)onlyinternet.ne
Guest
|
| Posted: Tue Sep 23, 2008 5:42 am Post subject: EGT probe location |
|
|
At 09:36 PM 9/22/08 -0400, you wrote:
| Quote: |
Makes sense, if fuel is still burning in the exhaust. How much higher does
it read if it's _not_ running rich?
|
Dana,
So far it will drop to with in 50 degrees on the Victor 1+.
Jack B. Hart FF004
Winchester, IN
| | - 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 |
|
|
|
|
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
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
