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Thought this was April fools till i realised it's a few weeks away. ![](/ubbthreads/images/graemlins/laugh.gif)
Plug INITIATES the burn , that's all it does , too cold a plug for the application 'may' leave a 'tad' power on the table due to unburnt fuel residing in base of plug , then you have too hot a plug 'may' leave a 'tad' power on the table due to mixure being lit off 'slightly' earlier , pretty 'negligible' which ever way you look at it.
Ok... weather I believe or not, how do you explain the difference in HP on the dyno and the better idle quality if they are a straight change heat range wise and I do understand the principles of the plug
This is the problem i'm having..............can't fathom how the autolite plug netted 5/10hp over the NGK , i would of thought the opposite , an autolite has a thicker ground strap than an NGK which could 'hinder' grounding..............bit like the multi electrode ground strap being the best thing since sliced bread , if this were the case 'indexing' a plug would also be hogwash.
I suggest you look at the 2 plugs in question the Ar has a cut back ground strap the NGK does not.
70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake
best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
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