Technical Service Bulletin: VCC Spark Plugs

[Viper_Race_HQ]

TECHNICAL SERVICE BULLETIN

NUMBER 07 – 2​

Date: May 7, 2007

Subject: Spark plugs

Recent dynamometer testing and examination of spark plugs removed from service after the Sebring, Florida race indicate the heat range of the current Competition Coupe spark plug – Champion RC12ECC has marginal safety from pre-ignition problems.

There have been no instances of engine damage or failure due to pre-ignition reported from the field using EC12ECC plugs. However, it is recommended that a colder plug, preferably a design with a precious metal fine wire center electrode that is at least a range colder be used in its place to improve the safety margin. One such plug is the Champion RC7PYCB4. These plugs are in stock and available through EPP. This plug has a shorter nose projection, which may degrade idle stability. The platinum fine wire should help offset this tendency.

For further details contact Irv Zwicker.

Irv Zwicker
Dodge Motorsports
Email: [email protected]

 

[mike & juli]

Does this apply only to the Competition Coupe? Thanx for heads' up! ~juli~

 

[Viper_Race_HQ]

Hi Juli,
Yes, this Technical Service Bulletin only applies to the Cometition Coupes.
- Tracey

 

[mike & juli]

Thank you Tracey!!!! ~juli~

 

[COILD]

WC's on 100 octane or regular Comp Coupe with 93 octane??
Thanks,
Mickey Craig
CC #33

 

[COILD]

Applies only to the WC comp coupes that require 100 octane gas.