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Can you even run a Suby or VW in USAC anymore? this is what i see listed on the Midget engine rules for 2019
DIRTMIDGETSERIES. EngineSizeLimitsAllDivisions/RPMLimitsforNationalMidgetEventsA.PushrodTypeEngin es1.Fourcylinderin-line,twovalvespercylinder,watercooled,withintakean dexhaustportsonthesamesideoftheheadusinganaluminum blockandapprovednon-crossflowaluminum“Fontana”cylinderhead.Maximumof17 4CID(2852cc)MaximumRPM88002.Fontana(Rhino)sealedsp ecengineMaximumof200CID(3278cc)MaximumRPM(factorys etandsealed)78003.Fourcylinderin-line,twovalvespercylinder,watercooled,utilizingana luminumblockand/orhead.Maximum166CID(2721cc)MaximumRPM8700B.
SingleOverheadCamshaftTypeEngines1.Fourcylinderinl ine,aluminumblockandhead,2valvespercylinder.Maximu m161CID(2639cc)MaximumRPM10300(Esslinger)MaximumRP M9800(EsslingerBB7)MaximumRPM9800(MOPAR–SR-11)2.EsslingerESTsealedspecengineMaximum161CID(263 9cc)engine.MaximumRPM(factorysetandsealed)9400C.
DoubleOverheadCamshaftTypeEngines1.HondaK-Seriesfourcylinderin-line,water-cooled,fourvalvespercylinder,mustuseHondaOEMcylind erblockandcylinderhead.Maximum154.6CID(2533.5cc)Ma ximumRPM9400
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