[DeTomaso] More time to plan
JDeRyke at aol.com
JDeRyke at aol.com
Mon Jun 8 13:21:20 EDT 2009
Relative to your possibly bad eccentric inside the 351C block, there are
two versions. The OEM is a 2-piece assembly with a hardened steel circular
outer race that rotates around an eccentrically mounted steel inner section.
There are no bearings or bushings: lube is by splash. The inner part is
located to the cam by a bent tab and a central bolt. If the tab cracks and/or
the bolt loosens, both parts can move erratically. This problem is common to
all Fords- even straight-six engines.
The second, maybe aftermarket eccentric is a one-piece hardened part that
eliminates the rotating outer race. Its still lubed by splash-oil. It is
considerably heavier than the earlier assembly and locates by several bolts- no
tab. Safety-wiring the bolt-heads together should eliminate all failure
sources. Note -some timing chain sets specify, 'NOT FOR ONE-PIECE FUEL PUMP
ECCENTRIC'. Dunno why since I use an early assembly that fits all timing chains
and gear-drive sets. FWIW- J Deryke
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