[DeTomaso] More time to plan

asajay at asajay.com asajay at asajay.com
Mon Jun 8 21:38:00 EDT 2009


You can get an idea of the stock eccentric versus the mongo replacement here:
http://www.351c.info/gallery2/v/asajay/351C_Build_2001/?g2_page=4

And why I opted to modify.
Asa Jay

Quoting JDeRyke at aol.com:

> 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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