[DeTomaso] The 351C Fuel Pump Chronicles
Will Kooiman
will.kooiman at gmail.com
Sun Dec 21 09:00:49 EST 2014
That sounds like the same thing that Robb M. does to his pumps.
--
Will
On 12/20/14 2:24 PM, "Charles Engles" <cengles at cox.net> wrote:
> Dear Forum,
>
>
>
> As I have mentioned, the supply of high
> performance mechanical fuel pumps for the Cleveland from Holley and
> Edelbrock has dried up.
>
>
> A recent dyno test showed that my nearly new
> Holley pump was anemic. I sent it to John Christian for a fix. JC
> decided to ever so slightly re-engineer it.
>
>
> He removed the lower part of the pump; made
> an adapter ring that permitted bolting a CV 5 valve body to the Holley
> main. This modification does nothing for the absolute volume of each
> pump action, but it does increase the efficiency of each stroke.
> It pumps one gallon at 2 psi in 38 seconds. That is enough fuel to
> support approx 1100 hp. The flow would be slightly less at higher
> pressures.
>
>
> I am not running 1000 hp engines, but I might
> need another hipo fuel pump for another engine. If you have a dead or
> unwanted Holley hipo fuel pump, then I would be keen to have it.
>
>
>
> Warmest regards, Chuck Engles
>
>
> PS: also looking for unwanted dead Pantera tachometers........
>
>
>
>
> Dear Dr. Engles, Yes there are a couple new parts involved. The
> adapter ring allows me to marry the CV 5-vavle body to the Holley main.
> This mod does nothing for the absolute volume of each pump action -
> instead it increases the efficiency of each stroke. I did not test the
> pump as received - someday I will take a 'stock' Holley pump (if I ever
> get another one from somebody) and run it on the engine like in the
> pictures. What I *CAN* tell you is that I ran the pump to verify that
> A: there were no leaks and B: it pumped a reasonable volume. I ran the
> engine at 3000 rpm and measured the flow at ~2 psi. I did it twice to
> make sure I didn't get a false indication the first time.
>
> $$$$$$$$ I think you should be reimbursed for the work. New parts,
> machining, not only "fixed", but improved. Let me know.
>
> Basically it pumps one gallon (at 2 psi) in 38 seconds. That is enough
> fuel to support ~1100 Hp. I suspect the flow will be slightly less at
> higher pressures. I also ran the pump 'dead headed' and it was right at
> 7 psi.
>
> $$$$$$$$ Well, that should be adequate.
>
> I encourage you to share this story with your Pantera brethren. As you
> know - it drives me crazy to see good hardware just put on a shelf or
> discarded when all it needs is a little good sense engineering.
>
> $$$$$$$$$ How much do you want me to share? Do you want to be
> spotlighted as the guy to rebuild and improve the old Holley 351C fuel
> pumps? I can keep it very low key or with full details.
>
>
> J.C. (I have another with ball bearings in the pump arm pivot and a
> fitting in the atmospheric pressure port so I can use it on 'boosted'
> engines) I think I had sent you pictures
>
> $$$$$$$ I tumbled onto the ball bearings in the fuel pump eccentric
> trick part that *you* came up with decades ago. I don't think I have
> seen a picture of the pump you describe above.
>
> Warmest regards, Chuck Engles
>
> ___________________________________
>
>
> From: Charles Engles <[1]cengles at cox.net>
>
> To: 'John Christian' <[2]uniquengines at sbcglobal.net>
>
> Sent: Thursday, December 18, 2014 8:18 PM
>
> Subject: The Fuel Pump
>
>
> Dear JC,
>
>
>
> I went over the pictorial story during
> dinner. Wow.
>
>
> 1) Scenes from PRI-South Lyon have remarkable similarity to
> PRI-Nichols Hills
>
> 2) You appear to have significantly modified the Holley rather
> than just "fixed it"!
>
>
>
> Warmest regards, Chuck Engles
>
>References
>
> 1. mailto:cengles at cox.net
> 2. mailto:uniquengines at sbcglobal.net
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