Spark plugs

Greg Bockelman said:
What were they used for when you saw them last?
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They were vary popular as aircraft engine spark plugs.
This is the first source for them I've seen in many years.
 
They are on the TC for the Continental C-75 and C-85, probably others, but those are two engines i am familiar with
 
The following spark plugs are approved for use on engine models as indicated:

0-200-A, -B, -C AC

Auto Lite BG Champion

Red Seal

HSR83IR, SR83IR, HSR83P, SR83P, A88, HS88, HSR88, S88, S88D, HSR88, SR88, SR88D, HSR93, SR93
18A1, BR4, BR4S, BR4SB, SH15, H15, SH15R, SH20A, SH150, SH200A

RB 485S, 706, 706R, 706S, 706SR, 919SR5, RB955S

C26, C26S, C27, C27S, RC27S, REM38P, REM38W, RHM38P, RHM38W, REM40E, RHM40E, ED41N, D41N, EM41E, EM41N, HM41E, M41E, M41N, EM42E, M42E SA190, SE190, SJ190, SE230, SJ230

HSR83IR, SR83IR, HSR83P, SR83P, A88, HS88, HSR88, S88, S88D, SR88, SR88D, HSR93, SR93
18A1, SH15, H15, SH15R, SH20A, SH150, SH200A, PH26
RB485S, 706, 706S, 919SR5, RB955S

C27, C27S, RC27S, REM38P, REM38W, RHM38P, RHM38W, REM40E, RHM40E, ED41N, D41N, EM41E, EM41N, HM41E, M41E, M41N, EM42E, M42E
SA190, SE190, SJ190 SE230, SJ230

There is all the data I require to use them in the 0-200

thanks for the reminder that the info I was looking for was right under my nose.. :)
 
What was the quality reputation of those? Heck of a price! Mine are pretty new but if there’s limited availability maybe I should grab a set..
 
Doug Reid said:
I used to fly out of a small airport that was lost in time. In the maintenance hangar, they had really old NOS plugs like these. If I recall, they may not be resistor plugs. If that is a concern, be sure to ask .
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The "R" in the designation means resisted.
 
Huckster79 said:
What was the quality reputation of those? Heck of a price! Mine are pretty new but if there’s limited availability maybe I should grab a set..
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I have no idea how many Fresno has, but they were standard of the day 25 years ago, we had no problems with them, but who knows what they will do on 100ll
 
Tom-D said:
I can't find any info on them as to usage these days.
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If the tag in the picture original pic is legit, looks like Fresno came into a a few lots of NOS plugs (most likely surplus) from the 40s and 50s. BG was one of the biggest suppliers back of plugs and are still around today. But they are more into commercial/industrial engine applications and aircraft ignition leads. Ran across BGs while helping on a generator unit. Customer service was good but too bad they got out the aircraft plug business.
 
I have a couple of sets of BG341s that I run in my 520. Great plugs.
 
Doug Reid said:
That is correct ! But, there are some other old brands that are also shielded plugs, but have no internal resistor. I will look in my hangar and see if I still have one of these.
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That's why they didn't put a "R" in some designations
 
I have not had good success with the internal resistors.

RHB32S-ResistorArcing.JPG


RHB32S-ResistorReplacement.JPG
 
Tom-D said:
I have no idea how many Fresno has, but they were standard of the day 25 years ago, we had no problems with them, but who knows what they will do on 100ll
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Yep. I have a spare set, still in the boxes for my C-85. Got them from Fresno Air Parts back in 1979...
 
ejensen said:
Ever worked on one?
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No I work on real engines. :)

If they are that great, why would you need to work on them?

I answered m own question with 1 quick click.

In November 2014 the Australian Civil Aviation Safety Authority proposed restricting all Jabiru-powered aircraft to day-visual flight rules only, without passengers or solo students and within gliding distance of a safe place to land due to the engine line's safety record.

Whoa. not what I expected
 
ejensen said:
Ever worked on one?
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Don't you know? If it was developed after about 1947, then it's obviously no good.

I don't know about your Jab, but my Rotax uses $2 spark plugs and burns zero oil between changes. But it's just a toy, you know.

:rolleyes:
 
Well, i use NGKs in AEIO-360. It's more real.
 
Tom-D said:
No I work on real engines. :)

If they are that great, why would you need to work on them?

I answered m own question with 1 quick click.

In November 2014 the Australian Civil Aviation Safety Authority proposed restricting all Jabiru-powered aircraft to day-visual flight rules only, without passengers or solo students and within gliding distance of a safe place to land due to the engine line's safety record.

Whoa. not what I expected
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That was refuted and rescinded. Stats showed no difference from lyc or conts.
 
I asked BG a question about their BG-341 and BG-346 spark plugs (heat ranges) a few years ago and the gentleman I spoke with sent me this old cross-reference chart for some of the BG plugs. The chart shows that the REM38E/REM39N to be equivalent to the 919SR-5.

As an aside, The BG-341 plugs are used by some of the Beech folks: http://www.csobeech.com/spark-plugs.html
You can also pick up a surplus set from ACS for cheap.

lUtgcef.jpg
 
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