Any advice on a brand or style is appreciated
Is silicone grease to be used in the caps?
That includes grounding each P-mag to an independent case bolt close by. DO NOT bring them to a firewall mounted forest of tabs! I can't stress this enough.
That includes grounding each P-mag to an independent case bolt close by. DO NOT bring them to a firewall mounted forest of tabs! I can't stress this enough.
Can you elaborate? If the case ground wire is connected to a forest of tabs on the firewall, what would be the issues with grounding each each P-mag at the forest of tabs? I've got 200 incident free hours with this configuration. Due to the criticality of an Ei system I have been thinking about adding a second ground strap between the case and the firewall.
Tks,
Mike
Can you elaborate? If the case ground wire is connected to a forest of tabs on the firewall, what would be the issues with grounding each each P-mag at the forest of tabs? I've got 200 incident free hours with this configuration. Due to the criticality of an Ei system I have been thinking about adding a second ground strap between the case and the firewall.
Tks,
Mike
And there is that. Good explanation Tim!You want only one ground path from the engine to the airframe. If you were to use a ground from your PMAG to the firewall, there may(will?) come a day when that becomes a handy alternate path for your starter to ground. Smoke/fire....and there goes your PMAG ground path...or worse.
Tim
I also use NGK plugs in heat range 8 but they're 18mm plugs and require no adapter. Part number AB-8. IO-360 and dual PMags.
And there is that. Good explanation Tim!
I cannot measure it but I have not observed any RF issues. I don't have any low-frequency equipment (e.g. ADF, HF, MB) or even VHF nav, only VHF comm. I'm uncertain whether the PMag supplied spark plug leads are resistive or not.These aren't resistor plugs and therefore emit more RF than a resistor plug would. I considered these but decided against it but I am interested in hearing if you've encountered any RF issues?
A secondary factor was they were more expensive locally at $4.79 each but not dealing with the plug adapter might be worthwhile.
I don't get this? Those adapters are no big deal. Simply torque the sparkplugs down and the adaptors get torqued. When you remove the plugs, if the adapters come out with them, a second socket wrench removes them from the plug in two seconds....Yes, I spend about $40 for a set of plugs which is pretty much in the noise level for my aviation expenses (pun intended). I would be willing to pay a lot more not to deal with those adapters.
--
Joe
I don't get this?
Pretty simple...why spend $150 for plug adapters if you don't need to.
You got me there!Pretty simple...why spend $150 for plug adapters if you don't need to.
The only problem I have ever had with the adapters was when I followed the advice of someone with a Light Speed Ignition who told me to install the adapters and torque them down and then install the spark plug, like Klaus recommends. I crushed the adapter and had to order a new one from Emag. Installing them on the plug, using anti-seize on both the plug & adapter, and then torqueing the plug, as Emag recommends has worked fine.I've gone through 3 sets of plug adaptors from LSE over the last 2,500 hours. I HATED to remove the top plugs/adaptors because something unpleasant invariably occurred. Klaus has changed configuration and/or materials several times but twice I've had the helicoil come out the head
I now use the same Denso L-14U (against Klaus' advice) with no issues.
Torque the inserts to 35 and the plugs to 25. No problems.
Page 9 said:First,install adapters with the supplied gasket on the spark plugs finger tight. Then, insert the combined assembly (plug with adapter) in the engine and tighten to 18 ft/lb (standard auto plug torque) through the spark plug ONLY. Do not torque the adapter itself.
Note 1: If you install and torque the adapters separately, stresses will be
focused at the adapter neck and can cause it to fail during installation.
Mine are lightspeed.
These aren't resistor plugs and therefore emit more RF than a resistor plug would. I considered these but decided against it but I am interested in hearing if you've encountered any RF issues?...
The PMag adaptors are crack/failure prone. Check out the naval brass adaptors EFII sells. I have not tried these brass adaptors yet, but I will be installing some on an airplane I maintain.
Bob,
Are those plugs really as hot as this chart would seem to imply?
Thanks,
David
.... how have the auto plugs been holding up ?
Any issues with these plugs fouling due to avgas ?