Dell'Orto wrote:Steve - I bet you dont use copper plugs in the rear bank of your GTO do you?(or do you have to remove the motor often enough to make it worthwhile?
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Platinums all round. Each time I've rebuilt the motor , I've put the originals back in. The only time I've had a problem was with a broken piston which smashed the plug(s). So long as the gap is OK and they're not fouled, there's no need to change them. If it's not broken , it doesn't need fixing. Colder plugs can cause misfires at low revs/low throttle.
Steve
?!?!?!