MR43LTS spark plugs
#1
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I've got vortec SBC and I was told that the delco MR43LTS is the best plug for these heads. I am also curious about the R44LTS. I do know the M in the part number is for marine application. Any thoughts?
#3
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The 44 is a 'warmer' plug than the 43's. With ACDelco, the heat range #'s go up as the plug get's a 'hotter' designation and vice versa.
Typically 'coldest' is 41 and 'warmest' 45 or 46.
The 43's should be perfect.
.035"-.040" gap will also be perfect.
Typically 'coldest' is 41 and 'warmest' 45 or 46.
The 43's should be perfect.
.035"-.040" gap will also be perfect.
#6
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you are not supposed to "i think" your total advance. be sure. i think a couple of degrees too advanced and bad things happen to piston tops. a couple of degrees too retarded and you are wasting fuel being passed by sundancers.