[DeTomaso] The 351C Fuel Pump Chronicles

[Will Kooiman]

I guess form follows function.

I will take a pic of mine when I get  a chance.

I have it off the car, so I can show the internals.

Sent from my iPhone

> On Dec 21, 2014, at 9:41 AM, Charles Engles <cengles at cox.net> wrote:
> 
> Dear Will,
> 
> 
>          Yes, it is remarkably similar.....and price is about the same, I
> think!
> 
> 
>                       Warmest regards, Chuck Engles
> 
> 
> 
> 
> -----Original Message-----
> From: Will Kooiman [mailto:will.kooiman at gmail.com] 
> Sent: Sunday, December 21, 2014 8:01 AM
> To: Charles Engles; 'De Tomaso List'
> Subject: Re: [DeTomaso] The 351C Fuel Pump Chronicles
> 
> 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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