Mailing List flyrotary@lancaironline.net Message #29499
From: David Carter <dcarter11@sbcglobal.net>
Subject: Re: [FlyRotary] Re: LS1 Coil Failures
Date: Wed, 18 Jan 2006 21:50:17 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Lynn H has provided regular info on MSD ignition systems - am I correct in "remembering" that the MSD coils would be used in place of the GM LS-1 coils?  Wasn't there an implication or experience that plugs don't foul as badly with MSD?  Or was that an issue only of "starting better" if plugs get wet?  Probably two different things - but would be nice to have someone report experience with MSD and 100LL fuel.

David

----- Original Message ----- From: "Bob White" <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, January 18, 2006 7:31 PM
Subject: [FlyRotary] Re: LS1 Coil Failures


This isn't in response to any other comments on the issue, but I wanted
to mention again that there is a replacement LS-1 coil that has a heat
sink fin on the back.  This should provide lower internal temperatures
for the electronic module.  It is the AC Delco D585 coil, GM p/n
10457730. I have my coils mounted on top of the engine so may have the
same heat problem that Tracy is seeing.  I did use the Corvette coils
because I could get connectors for them.  If I do have coil failures, I
will try a set of the D585 coils. These coils use the smaller connector
like the truck coils.

Speaking of connectors:  After months of grief trying to buy them, I now
have the smaller connectors in stock.  I still have to sort out the
costs, but I will be able to sell the connectors as well as make up
cables for the truck LS-1 coils.

After Bob Mears comments on lead fouling I have sort of given up hope
on the LS-2 coils being of any help.

Bob W. (Up to my elbows in ProSeal fixing leaky gas tank (I hope.))

-- http://www.bob-white.com
N93BD - Rotary Powered BD-4 (first engine start 1/7/06)
Custom Cables for your rotary installation -
http://www.roblinphoto.com/shop/

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