Tracy,
I noticed that the sparkplugs for the RX-8
(Renesis) engine have a longer reach for the leading plugs (21 mm) than for the
trailing plugs (3/4 inch =19.05 mm). The earlier 13B engines all use a 3/4 inch
reach plug. See the attached web
pages:
http://www.ngk.com/results_app.asp?AAIA=1192340
http://www.ngk.com/results_app.asp?AAIA=1431319
Does the longer reach of 21 mm create any
problem for use in the older 13B engines?
If one wanted to run a hotter plug in the trailing position, will the
longer reach (and hotter) leading plug work in the trailing plug hole?
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Tracy Crook
Sent: Thursday, December 07, 2006
8:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: MSD coils
- Plug Fouling... again.
I changed my plugs to iridium type
(stock Renesis parts) about 210 hours ago and they have been wonderful. Never
a hint of 'SAG' but I have run only a few tanks of 100LL during that time.
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