| Al,
This has been an issue from the beginning, sometimes it was worse than others. I had never been able to tie it to anything directly. I did buy a lot of spark plugs over the years though. I'm hoping that I can now run the Renesis irridium plugs as they last much longer than the standard plugs. I tried them, but the miss was worse than the stock plugs, so I went back to the stock ones.
Mark On Sat, Jan 8, 2011 at 11:14 PM, Al Gietzen <ALVentures@cox.net> wrote:
Mark;
It’s great that this has have
resolved the occasional misses for you. It’s very puzzling to me that
my engine (and apparently many others) has always run smooth at any condition
over about 1500 rpm with the same controller and the D580 coils. Has this only been an issue with
the P-port?
Al
-----Original Message-----
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Mark Steitle
Sent: Saturday, January 08, 2011
5:12 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: LS2
"Yukon" coil report
Yeah, easy for you to say.
Flew today and the engine ran great, although it did
miss once while I was tweaking the mixture, so it was most likely mixture
related and self-induced. Normally, it would mis on takeoff climb.
Today's climb, while only at 2/3 throttle, was smooth as silk.
So, in retrospect, it appears that this was a
worthwhile exercise. I wish I could say that for all of my so-called
"improvements".
On Sat, Jan 8, 2011 at 7:00 PM, Kelly Troyer <keltro@att.net> wrote:
Great news so far Mark
!!...........Can hardly wait for the flight report..........I wonder if the
improvement as of this post
is solely due to the stronger spark
(120 ma) of the D585 or if the performance of one or more of your old
coils was
degraded ??.............After you
flight test the new coils it would be interesting if you were to substitute
your old coils
one at a time and do a flight test
to see if the old miss reappears.............Easy for me to say wasn't it
!!................<:)
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
From: Mark
Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, January 7, 2011 9:10:29
PM
Subject: [FlyRotary] LS2
"Yukon" coil report
Guys/gals,
I managed to rig up the six new LS2 "Yukon"
coils on my p-port 20B today to see if there was any noticeable improvement
over the old LS1 "truck" coils. While I had a new set of plugs
on hand, for once I resisted installing them so as to not change more than one
thing at a time.
First impression, beginning with a stone cold engine,
full rich on the mixture, two hits of primer, hit the starter and it came to
life immediately. I mean that it started quicker than my Mazda 3 or my
Chevy Silverado when doing a cold start. It idled down to 1500-1600 as
sweet as could be, unlike previously.
I didn't have time to fully warm it up and do a full
power test, but I did run it to a little over 4000 rpm and it ran very smooth.
So, bottom line is that I am happy with the LS2
"Yukon" coil upgrade. I will post a flight report after I get
the wiring cleaned up and flight worthy.
|