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New E-mag alert service bulletin
- Thread starter Rdog420
- Start date
New spark plug and adapter installation from Hartzell for E-Mag spark plug adapters
Install the spark plug adapter hand tight to the spark plug.
Install the spark plug/adapter assembly into cylinder with a new spark plug gasket.
Torque only the spark plug (not the adapter) to 18-20 ft.lbs (24.4-27.1 N.m).
Wish the industry could come to a standard. Too confusing to which is right.
Install the spark plug adapter hand tight to the spark plug.
Install the spark plug/adapter assembly into cylinder with a new spark plug gasket.
Torque only the spark plug (not the adapter) to 18-20 ft.lbs (24.4-27.1 N.m).
Wish the industry could come to a standard. Too confusing to which is right.
been doing this already. I forget where I read it, probably somewhere on this forum. Glad to see its official
This has been in the installation manual for over 7 years:
Auto Spark Plug Adapters - Plug adapters permit the use
of 14mm automotive type plugs. Use short reach (SR)
adapters if your aviation plug callout is “M” type (for
example REMXXXX). Use long reach adapters (LR) if
your aviation plug callout is “B” type (REBXXXX). 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.
Yeah, whats new here? I'm missing something?
Nothing new about torquing the hand-assembled adapter and plug.
The ASB is about a batch of adapters that shipped out with undersized 18mm threads. Gotta remove them and measure the thread major diameter. If in spec, continue to use them; out of spec, toss the adapter, replace with new.
The ASB is about a batch of adapters that shipped out with undersized 18mm threads. Gotta remove them and measure the thread major diameter. If in spec, continue to use them; out of spec, toss the adapter, replace with new.
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