[Supras] Colder plugs, when do yall use them?

[Jim Jobe]

6 is stock, 7 is one colder (NGK is backwards).

If you're still using the stock TCCS, heat range 6 is
good for pretty much whatever the ct26 can put out unless
you're one of those who think 16+ psi on a ct26 is getting
you somewhere.

7 will foul out eventually, and combine it with how rich the
car runs on 550's, well, have fun changing plugs often.  But
7 may be needed due to the stock ignition map + afm tweaks
(AFC, MAFT, etc).

On Thu, Jun 14, 2007 at 01:08:49PM -0400, Walker, Brian (Rich. Dist) wrote:
> I was thinking 7 was the stock range but the 2330's are BCP6RE, is the 6
> designation not the heat range? Also, I've noticed I get some plugs
> (NGK) that have a silver base and some are gold (cadmium?) I try to
> match them, just wondering if anyone else noticed that?
> 
> Anyone else have the number written near the phone so you can call and
> see who has them in stock?
> Brian
> 
> 
> Date: Thu, 14 Jun 2007 09:38:44 -0500
> From: "Chris Smyczek" <csmyczek at molbiores.com>
> Subject: Re: [Supras] Colder plugs, when do yall use them?
> To: <supras at supras.com>
> Message-ID: <000a01c7ae91$b623f810$0800a8c0 at JOE>
> Content-Type: text/plain;	charset="us-ascii"
> 
> Cold plugs transfer more heat. Increased boost creates increased heat
> generally. A lower heat range, ngk 6, will start to glow like a glow
> plug and lead to preignition under certain conditions. Using a plug
> which is too cold, ngk 10 heat range for example is safe but may end up
> fouling. If you are racing, the engine is not run enough at low rpms to
> foul plugs which otherwise may be too cold (on the street). Chris
> 
> 
> 
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