Today's Message Index:
----------------------
1. 04:06 PM - Probe Question (Jim Crowder)
2. 04:23 PM - Re: Probe Question (BobsV35B@aol.com)
3. 04:42 PM - Re: Probe Question (BobsV35B@aol.com)
4. 09:40 PM - Probes (Jim Crowder)
Message 1
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There was a thread that ran regarding small holes between the plugs on some
of our engines. I tried to follow this thread, but do not recall reading a
definitive answer. The thought was that these might be for temperature
probs. I just checked my engine and I do have small holes (about 1/8"
diameter and about one inch deep, I didn't actually measure). Are these the
holes in question and are they for probes?
Jim Crowder
S5/3300 Jabiru (Engine swap in process)
North Front Range of Colorado
Message 2
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| Subject: | Re: Probe Question |
Good Afternoon Jim,
I hate to add to an uncertainty with something I cannot substantiate, but I
was told that those holes are put there for use of CHT probes. The problem is
that no one is making a probe of the proper temperature range that will fit
in those holes.
Incidentally, I did find a Champion spark plug that appears to be
interchangeable with those that came with the engine. The Champions use a smaller
wrench. (I think it is 5/8ths of an inch instead of 11/16th of an inch.) That
small change makes it just a tiny bit easier to tighten the CHT probes on the
spark plugs. I believe this is all in the maintenance manual, but it is
important to get the gasket off the plug and put the CHT probe on the plug before
the
gasket is applied. I found it very difficult to get the supplied spark plug
gasket off of the Champion plug so that I could put the CHT sensor on the
plug before the plug gasket. Worked easier on the supplied plugs.
Sure wish they would find a way to use those little holes for the CHT
temperature!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 4/11/2008 6:06:38 P.M. Central Daylight Time,
jcrowder@lpbroadband.net writes:
--> Jabiru-List message posted by: "Jim Crowder" <jcrowder@lpbroadband.net>
There was a thread that ran regarding small holes between the plugs on some
of our engines. I tried to follow this thread, but do not recall reading a
definitive answer. The thought was that these might be for temperature
probs. I just checked my engine and I do have small holes (about 1/8"
diameter and about one inch deep, I didn't actually measure). Are these the
holes in question and are they for probes?
Jim Crowder
S5/3300 Jabiru (Engine swap in process)
North Front Range of Colorado
**************It's Tax Time! Get tips, forms and advice on AOL Money &
Finance. (http://money.aol.com/tax?NCID=aolcmp00300000002850)
Message 3
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| Subject: | Re: Probe Question |
Pardon the uncertainty, but I think the supplied spark plugs uses an 18 MM
wrench, not an 11/16ths one.
It has been almost a week and a half since I tightened them and my memory
is getting very short!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 4/11/2008 6:20:42 P.M. Central Daylight Time, Bobs V35B
writes:
Incidentally, I did find a Champion spark plug that appears to be
interchangeable with those that came with the engine. The Champions use a smaller
wrench. (I think it is 5/8ths of an inch instead of 11/16th of an inch.) That
small change makes it just a tiny bit easier to tighten the CHT probes on the
spark plugs. I believe this is all in the maintenance manual, but it is
important to get the gasket off the plug and put the CHT probe on the plug before
the
gasket is applied. I found it very difficult to get the supplied spark plug
gasket off of the Champion plug so that I could put the CHT sensor on the
plug before the plug gasket. Worked easier on the supplied plugs.
**************It's Tax Time! Get tips, forms and advice on AOL Money &
Finance. (http://money.aol.com/tax?NCID=aolcmp00300000002850)
Message 4
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There was a thread that ran regarding small holes between the plugs on some
of our engines. I tried to follow this thread, but do not recall reading a
definitive answer. The thought was that these might be for temperature
probes. I just checked my engine and I do have the small holes (about 1/8"
diameter and about one inch deep, I didn't actually measure. Are these the
holes in question and are they for probes?
Jim Crowder
S5/3300 Jabiru (Engine swap in process)
North Front Range of Colorado
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