DeTomaso Mailing List: November 99, Message #416

Regarding block-off plates:  Mr Gasket makes a chrome-plated one.  Although
not shown in the Jegs catalog, they do currently have it in stock.

Part number: 720-1517 Price: $5.99.

Jegs High Performance Mail Order:1-800-345-4545.

-----Original Message-----
From: Asa Jay Laughton <asajay@asajay.com>
To: Multiple recipients of list <detomaso@realbig.com>
Date: Monday, November 15, 1999 12:34 PM
Subject: Argh - Pete Jackson Gear drive help needed


>Hi all,
>
>I know some of you have installed a Pete Jackson gear drive set in you
>351C.  Well, I got to that very point yesterday and found.... I couldn't do
>it with the stock fuel pump eccentric setup.
>
>The Stock fuel pump eccentric in a Cleveland consists of two pieces, an
>outer shell that is allowed to move freely, thus reducing wear by a
>significant magnitute, and an inner shell that is bolted to the face of
>timing gear.  The stock timing gear set (and most aftermarket chain drives)
>are set up so that the outer shell moves freely; the inner shell sitting on
>a small ledge at the center of the gear.  I've got photos but need to shoot
>the rest of the roll before I can publish them.
>
>The Pete Jackson gear drive has a totally flat-faced cam gear.  There is no
>legde for the inner shell to ride on, allowing the outer shell to spin
freely.
>
>Here are my options:
>
>1 - Use a washer between the inner shell and the gear to create the ledge I
>need.  This would also move the locating tab out of the hole a small amount
>and "could" cause it to fail at some point possibly allowing the fuel pump
>eccentric to NOT do it's job anymore.  (I don't like this option)
>
>2 - Sandwich the outter shell with the inner shell, against the gear drive.
> This maintains the proper diameter for the eccentric, but does not allow
>it to spin freely independent of the inner shell (this is getting hard to
>picture, isn't it), it also requires that the inner shell be distorted to
>meet the cam gear, thus throwing off all my torque readings, possibly
>leading to bolt failure, gear coming off, bumps, grinds, zizzes, etc..
>(not an option)
>
>3 - Toss the outer eccentric and allow the fuel pump to ride on the inner.
>A small diameter loss is had, and the idea of reducing wear is gone as
>well.  (best of the three so far)
>
>4 - have an appropriate shelf machined in the face of the cam gear, thereby
>allowing the outer eccentric to move/spin freely, while allowing the inner
>eccentric to be securely bolted to the face of the gear drive. (best
>alternative)
>
>5 - Can the whole thing, and go with an electric fuel pump.  Does anyone
>make a fuel pump block off for the 351C?
>
>
>What I want to know, is how did anyone else attach the fuel pump eccentric
>to thier Pete Jackson gear drive setup?  This is driving me nuts.  I'm
>stupified I didn't notice this earlier.  Please help.  I'm held up because
>of this at the moment.
>
>Thanks,
>Asa Jay
>
>
>---------------------------------------------------------------------------
-
>--------------------------------------------------
>Asa Jay Laughton
>Global Handheld and Mobile Systems (GHAMS)  Engineering
>
>Itron, Inc.
>2818 N. Sullivan Rd.
>Spokane, WA  99216
>(509)891-3306 asajay.laughton@itron.com
>
>Visit our web site at http://www.itron.com
>
>-----BEGIN PGP SIGNATURE-----
>Version: PGPfreeware 6.0.2 for non-commercial use <http://www.pgp.com>
>
>iQA/AwUBN+Fczdi6vLLSnVblEQKzygCg+NuMnxQWSspalM5vA4S07+V1DlcAoIm/
>8uOvPRgTpElaYxgeHEOcJO0j
>=y0fB
>-----END PGP SIGNATURE-----
>
>