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The Terminator
Terminator Talk
Possibly have the cobra valve tick quick fix
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<blockquote data-quote="1wild-horse" data-source="post: 10028747" data-attributes="member: 84197"><p>you know i thought the same thing about bearing clearance when i read this thread, because thats what we've been told all along about the lighter weight oils we use today it's because of the tighter tolerances in these new motors. so i checked and main bearing clearances on a 5.4 in a gt 500 are .0009 to .0019 in. (07 spec.) Strangely enough, they do not list a spec. for main journal to bearing clearance for an 03 cobra.</p><p>Crankshaft </p><p>Main bearing journal diameter 67.493 mm </p><p>Main bearing journal maximum taper 0.05 mm </p><p>Main bearing journal maximum out-of round 0.05 mm </p><p>Main bearing journal-to-cylinder block clearance 0.023-0.055 mm </p><p>Connecting rod journal diameter 52.983-53.003 mm </p><p>Connecting rod journal maximum taper 0.004 mm (0.0002 in) </p><p>Connecting rod journal maximum out-of-round 0.004 mm (0.0002 in) </p><p>Crankshaft maximum end play 0.130-0.301 mm </p><p>Thrust bearing journal diameter 67.493 mm </p><p>Thrust bearing journal maximum out-of round 0.05 mm </p><p>Thrust bearing journal maximum taper 0.05 mm </p><p>Thrust bearing journal length 17.725-17.775 mm </p><p></p><p>They do however list crank to block clearance. ??</p></blockquote><p></p>
[QUOTE="1wild-horse, post: 10028747, member: 84197"] you know i thought the same thing about bearing clearance when i read this thread, because thats what we've been told all along about the lighter weight oils we use today it's because of the tighter tolerances in these new motors. so i checked and main bearing clearances on a 5.4 in a gt 500 are .0009 to .0019 in. (07 spec.) Strangely enough, they do not list a spec. for main journal to bearing clearance for an 03 cobra. Crankshaft Main bearing journal diameter 67.493 mm Main bearing journal maximum taper 0.05 mm Main bearing journal maximum out-of round 0.05 mm Main bearing journal-to-cylinder block clearance 0.023-0.055 mm Connecting rod journal diameter 52.983-53.003 mm Connecting rod journal maximum taper 0.004 mm (0.0002 in) Connecting rod journal maximum out-of-round 0.004 mm (0.0002 in) Crankshaft maximum end play 0.130-0.301 mm Thrust bearing journal diameter 67.493 mm Thrust bearing journal maximum out-of round 0.05 mm Thrust bearing journal maximum taper 0.05 mm Thrust bearing journal length 17.725-17.775 mm They do however list crank to block clearance. ?? [/QUOTE]
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Possibly have the cobra valve tick quick fix
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