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08-20-2011, 01:27 PM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
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Quote:
Originally Posted by nucleus
I had a problem the first summer with mine. I put another cooling tube to that pmag and really sealed up my plenum - which lowered my already good CHTs another 20 degrees.
Haven't had a problem since. I've been running an experiment where I ran the NGK Iridium (EIX) plugs on one and regular NGKs on the other - amazing difference when running lean. I am looking forward to running both pmags on EIXs.
In my opinion running auto plugs is a huge advantage.
Hans |
Been running EIX plugs since Feb 2009, about 100 hrs a yr, ZERO wear, still cheap enough to toss a new set in once a yr. 
__________________
Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
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08-21-2011, 03:04 PM
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Join Date: May 2010
Location: Denver area
Posts: 272
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Quote:
Originally Posted by RV7AV8R
Regarding CHTs, I have not noticed much difference. Regarding power, it feels more powerful on take off with dual Pmags but that may be because I just spent a bunch of money on them |
I had my right LASAR magneto fail back in June, and decided to replace the LASAR system with two P-Mags.
I have the same "feeling" and think I am getting a little better power on take off. I've also been tracking the centerline better too, but maybe that's not the Pmags. 
So far I like them a lot. |
08-23-2011, 03:56 PM
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Join Date: Nov 2005
Location: KRTS
Posts: 1,798
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Any issues for those of you running auto plugs? Heard stories of the plug wires coming off in flight. Like the idea of cheap plugs with a hotter spark, but I like the magneto wires being screwed on even more.
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Next?, TBD
IAR-823, SOLD
RV-8, SOLD
RV-7, SOLD
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08-23-2011, 04:36 PM
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Join Date: Jan 2008
Location: Ashland, OR
Posts: 2,561
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no problems here
Quote:
Originally Posted by Sig600
Any issues for those of you running auto plugs? Heard stories of the plug wires coming off in flight. Like the idea of cheap plugs with a hotter spark, but I like the magneto wires being screwed on even more.
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I have auto plugs on top with my light speed EI. I always check at oil change, but have not found a wire moved in 150 hrs. Some people talk about 'burping' them when you put them on. I don't do anything fancy, just wiggle it around as I press it on. No issues.
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Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet"
Hobbs 625
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Jan 2020
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08-23-2011, 04:48 PM
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Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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The devil is in the details
Quote:
Originally Posted by Sig600
Any issues for those of you running auto plugs? Heard stories of the plug wires coming off in flight. Like the idea of cheap plugs with a hotter spark, but I like the magneto wires being screwed on even more.
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Hey Space Man Spiff, [love the avatar]
Like Steve mentioned above, the secret to getting automotive spark plug wires to stay on is to provide an escape path of the air which gets trapped inside the boot of the plug wire. [aka burping] If you do not do this, air gets trapped [under pressure] inside the boot. Time and vibration will cause the boot to slowly work it's way off of the spark plug.
Just had to deal with a customer who did his own "tune up" on a 1995 Ford van. 3 of his 6 spark plug wires had come loose because he did not know to do this.
Charlie
PS Watch out for the dreaded Gurl!
Last edited by chaskuss : 08-23-2011 at 04:49 PM.
Reason: edited name
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08-23-2011, 05:29 PM
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Join Date: Dec 2008
Location: na
Posts: 1,457
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ok so how did you provide an escape path? I have not heard this was a problem with auto-plugs..which I am using.
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08-23-2011, 06:23 PM
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Join Date: Jan 2005
Location: Peoria, AZ
Posts: 1,053
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Burp... scuse me
Pinch the sides of the spark wire boot as you wiggle it into place. You will hear air escaping as the boot slides into place. Ensure that the boot slides firmly into place.
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Regards,
Thomas Velvick
Goodyear, AZ (KGYR)
2020 Donation sent.
N53KT RV-6a finished 2018, Flying
N7053L RV-4 Wife's RV
N56KT RV-4 Finishing
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08-23-2011, 07:12 PM
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Join Date: Dec 2010
Location: Hilton Head Island
Posts: 1,087
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Auto vs. Aviation plugs
Hey SIG600,
I went with the aviation plugs thinking the me thing - screw on would be better because of the security.
During the build process for one reason or another I had to remove and replace the plug cap many times.
Well, fast forward to about 20 hours of flight time....I go out for my engine run up before takeoff and find that I am dropping a cylinder! Scrub that flight!
I take the cowling off, start to remove the cap on the #1 cyl and what do I find? The cap cut the outer shield of my plug wire like a pipe cutter!
I plan to run aviation plugs until I have to replace them and then I will switch to auto plugs.
Other then that I do love the pmags.
Regards,
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John Mastro
RV-8
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08-23-2011, 07:35 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by Sig600
Any issues for those of you running auto plugs? Heard stories of the plug wires coming off in flight. Like the idea of cheap plugs with a hotter spark, but I like the magneto wires being screwed on even more.
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No issues in over 300 hours with dual P-mags. They clip on and seem to stay on, even with burping them.
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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