SparkPlugs: Difference between revisions
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Platinum plugs reach operating temp faster and can help cold running, especially on carburated Xs. Platinums are prone to high speed glazing and can foul more easily than copper or other standard plugs. Platinum plugs are shipped pre-gapped, although the single Platinum plugs can be re-gapped if care is exercised. The center electrode insulator is particularly fragile. | |||
Another quality plug is the Bosch WR7DTC, the "T" refers to the 3 side electrodes. These are pre-gapped copper resistor plugs, and last a long time because of the 3 side electrodes. Availability is limited. | |||
For reliability and availability use Bosch WR7DC or NGK equivalent. | |||
The stock Bosch ignition system provides more than enough spark for everyday driving as well as performance or competition driving. High-output engine builds may benefit from aftermarket competition ignition systems. | |||
--Gregory 14:26, 16 September 2009 (UTC) | |||
Latest revision as of 09:26, 16 September 2009
My preference, and biggest bang for the buck is...
BOSCH PLATINUMS, WR7DP good for about another 3 hp and noticable in the seat of the pants. $2.99 each
I haven't tried the following, but Bosch also makes double and 4 prong plugs... up to 5.99 each and ALL their RECOMMENDED Platinum Plugs are GUARANTEED to make a difference or your money back. In this case the WR7DPs.
The 2 and 4 prong EQUIVALENTS for the WR7DPs are #4310 for the Plus 2 and #4477 for the Plus 4.
IAP sells the BOSCH Platinums under the following IAP part numbers:
| Single | 31509 | 2.95 |
| Dual | 31512 | 3.99 |
| Quad | 44774 | 5.99 |
Platinum plugs reach operating temp faster and can help cold running, especially on carburated Xs. Platinums are prone to high speed glazing and can foul more easily than copper or other standard plugs. Platinum plugs are shipped pre-gapped, although the single Platinum plugs can be re-gapped if care is exercised. The center electrode insulator is particularly fragile.
Another quality plug is the Bosch WR7DTC, the "T" refers to the 3 side electrodes. These are pre-gapped copper resistor plugs, and last a long time because of the 3 side electrodes. Availability is limited.
For reliability and availability use Bosch WR7DC or NGK equivalent.
The stock Bosch ignition system provides more than enough spark for everyday driving as well as performance or competition driving. High-output engine builds may benefit from aftermarket competition ignition systems. --Gregory 14:26, 16 September 2009 (UTC)