On the 318, I would opt for the 3923 or 3924. The Bosch design was not
setup for your truck heads.
-------------------------------------------
Steven St.Laurent
Test Engineer
Test Branch, GSD, MCTSSA
MARCORSYSCOM, USMC
760-725-2506 (DSN 365-2506)
Work:mailto:stlaurents@mctssa.usmc.mil
Home:mailto:saint1958@home.com
-----Original Message-----
From: jay & dana [mailto:jay&dana@telus.net]
Sent: Monday, November 27, 2000 4:13 PM
To: dakota-truck@buffnet.net
Subject: DML: Re: Observations on spark plugs for the 4.7
Does anyone have any opinions yet on how these plugs would work on a 97,
318?
Thanks
Jay
-----Original Message-----
From: Aajaynefour@cs.com <Aajaynefour@cs.com>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Date: Sunday, November 26, 2000 11:47 PM
Subject: DML: Observations on spark plugs for the 4.7
>Well,
>
>I went plumb loco and bought a set of Bosch +4's (P/N 4418) for the 4.7
based
>in part on the comments of a fellow DML'er (forget exactly who) and the
>claims of Bosch. The fellow DML'er mentioned that the semi-hemi design of
>the 4.7 seems to lend itself to the +4 design and that his best track times
>were had with this plug. The "open" nature of the plug presents the spark
to
>the air/fuel mixture with less obstruction than a conventional plug without
>indexing. Hummm? Seems to work.
>They don't ping, the idle and pull of the motor is smoother, and the
>subjective butt-dyno perhaps feels some additional pull.
>
>As the search for a good plug for the 4.7 continues I wanted to give my
>impression of the Bosch +4 plugs. This one might be good.
>
>Andrew
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