Spark Plugs for Race Engines

[Spatt]

I recently had an engine come in and noticed they were running the stock plugs on a race motor. When I asked why they weren't running a colder plug customer mentioned they couldn't find one at the local parts store when they asked at the counter.  Here are the two plugs I've been using that might be of interest to you guys.

First one is LMAR9E-J Standard Electrode with multi-ground

Second is SILMAR9B9 Iridium Electrode

Not of value to guys with stock motors but for guys with cams and pistons or compression higher than stock.  Can also call up NGK and they'll be able to find a plug in the heat range you're looking for.  Just FYI nothing more.

 

[scratchpad]

On 9/16/2019 at 11:35 AM, Spatt said:

I recently had an engine come in and noticed they were running the stock plugs on a race motor. When I asked why they weren't running a colder plug customer mentioned they couldn't find one at the local parts store when they asked at the counter.  Here are the two plugs I've been using that might be of interest to you guys.

First one is LMAR9E-J Standard Electrode with multi-ground

Second is SILMAR9B9 Iridium Electrode

Not of value to guys with stock motors but for guys with cams and pistons or compression higher than stock.  Can also call up NGK and they'll be able to find a plug in the heat range you're looking for.  Just FYI nothing more.

 

Weve been running the SILMAR9B9