Re: [AMC-List] Duraspark distributor woes (258 six)

[Mark Price <markprice242@xxxxxxxxxxxx>]

It's the same heat range plug in relationship to other extended heat range plugs.
With the extended tip it will run a little hotter as the path to disapate heat into the head is longer. You could side gap them :] It would open the spark to the chamber.
  I've experienced smoother idle on every engine I've put Splitfire, or multi tip plugs in. I've not seen any change in MPG or power long term, But the increase in idle quality is good enough for me to pay the money! I like the sound of a cam, but not an engine miss at idle.
--
Mark Price
markprice242ATadelphia.net
Morgantown, WV


---- Sandwich Maker <adh@xxxxxxxxxxxxxxxxx> wrote: 
> " From: Tom Jennings <tomj@xxxxxxx>
> " 
> " > " Turns out I have RC12LYC Champion plugs in there. The "L"
> " 
> " On Thu, 2 Nov 2006, Sandwich Maker wrote:
> " 
> " > the L shouldn't matter.  12 is the heat range, and if it's a 12 it
> " > should be a 12.
> " 
> " Well the Champion data that Edelbrock parrots says it's .060"
> " extended tip; why that doesn't simply translate to a higher
> " heat range I don't know.
> 
> if it does translate to a higher heat range why isn't it -marked- with
> a higher heat range?
> 
> my argument is that they compensate the design for the extended tip so
> that a 12 remains a 12.  anything else would make a hash of the
> marking system.
> 
> " > " So I've mailordered RC9YC's, and will play with timing with
> " > " these colder plugs when those arrive.
> " > 
> " > this should be the significant change.
> " 
> " Yeah, but I bet it's close. My plugs are whiteish, though not
> " overheating or damaged (10K miles or so).
> " 
> " http://wps.com/temp/plug1.jpg
> " http://wps.com/temp/plug2.jpg
> 
> yup.  my plug reading skills are a little rusty but they look pretty
> good.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
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> adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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