Jimmy Jakobsson
Well-Known Member
Hi! I have done alot of tuning with my Mopar 493 stroker engine, Edelbrock avs2 800cfm, Edelbrock rpm intale, Edelbrock E-Street heads 84cc, Comp cam xe275hl camshaft(231/237@050), 10,04:1 scr, Fbo distributor set at 18 initial and full manifold vacuum brings it to about 30 at idle, 34 degrees full mechanical advance. The engine running pretty good now with no hesitation or stumble, its just some slight misses at idle. I reading my spark plugs and they all looks good, except cylinder 5, 7 and 6 running richer than the others, is this about the rpm intake(dual plane) or what? The engine do not use any oil or anything like that and i have about 500 miles on it from new rebuild, i did a compression test a mounth ago and i have 200psi on all cylinders cold engine. The blackest one is number 7 and the 2 other rich ones are 5 and 6. The whitest plug is how the other 5 cylinders looks like. So the distribution must be uneven. Last time i checked it was number 6 that looked black like the 7 do now so it must be the distribution of fuel
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