Spark Plugs: Choosing the correct spark plug design and heat
range is
important when trying to get the best performance possible.
Since there are
so many engine combinations and manufacturers, MSD does not
recommend which
plug or gap is exactly right for your application. It is
recommended to
follow the engine builder or manufacturer’s specification for
spark plugs.
With that, you can then experiment with the plug gap to obtain
the best
performance. The gap of the plugs can be opened in 0.005"
increments, then
tested until the best performance is obtained. MSD judges the
plug gap by
compression and components.
These examples are just starting points to get you going in the
right
direction. Every application is different and should be tested
and tuned.
there is an attachment from MSD's website. i just tried their
suggestion. i
had the plugs gapped at the stock .035 but it didn't seem to do
anything. i
didn't go the .005 increments. i just went and set them at .050.
gapping
them at .050 i could definately tell a difference in
performance. .050
worked so i stayed with it.
>From: "Chad Evans" <hemidak@msn.com>
>Reply-To: dakota-truck@dakota-truck.net
>To: dakota-truck@dakota-truck.net
>Subject: DML: spark plug gap
>Date: Thu, 29 Aug 2002 08:14:41 -0700
>
>
>i used to have msd on my truck but i had to take it off. i left the plugs
>at the recommened .050 gap for when using msd. the truck starts and runs
>alright. what performance loss would there be if any if i were to leave
>them at .050 instead of the factory .035. what other things would i gain or
>lose by leaving them where they are ?
>
>
>
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