 Spark Plug Question, Colder plug..............? |
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| Lab Rat |
 May 2 2005, 06:44 PM
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Newbie  Group: Members Posts: 4 Joined: 2-May 05 From: Wisconsin Member No.: 4,018  |
I have a modified 1.7 in my '73. Running 96mm Mahle pistons, mild Webcam / lifters, stock D-Jet FI and Pertronix Ignitor. I'm running in a PCA Dr. Ed. event this Sat. at Road America, and am concerned about heat generation. Currently I'm using Bosch Super PO 282 (W7CC) plugs. I bought a set of Bosch Super RO 488 (W6DC) plugs, being advised that they are a colder plug. One concern is that they "reach" almost 1/4 inch longer than what I've been using.
Will they hit the piston tops? Are they actually a colder plug? I've had a heat problem in the past. Timing is set at 29 degrees advance. Fuel mixture setting at "two clicks" from richest setting. Any help/advice is appreciated. |
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Posts in this topic
Lab Rat Spark Plug Question May 2 2005, 06:44 PM
Aaron Cox A bosch 6 series is colder than a Bosch 7 series.
... May 2 2005, 06:59 PM
Cap'n Krusty A D series plug has an extended reach, something n... May 2 2005, 07:22 PM  |
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