[DeTomaso] Mechanical Fuel Pump

[Will Kooiman]

I realize you already have the pump on, but here's how I do it:

I find TDC on #1 (timing mark on zero), but with the rotor 180deg off from
#1.  That points the eccentric up which makes it the easiest to put the pump
back on.

I've experimented with bolting the top bolt on first, and then prying the
pump down.  That isn't necessary, however, if you have the eccentric pointed
the right way (up).

What kind of fuel pump did you purchase?  Be aware that cheapo Autozone fuel
pumps are crap.  I have a Holley chrome pump, which isn't as nice as their
high-po pumps you can get for Windsors.  It is cast iron, though, plus the
diaphragm looks like an old tire - nice and thick.  The cheapo Autozone pump
I had felt like it was pressed from a beer can and used old rubber gloves
for a diaphragm.  It lasted about 2 weeks.

The best pump I've seen is made by Rob Macquarrie.  I used to have a link to
his page, but I have a new computer w/out the link.  Here's a pic of one of
his pumps:

http://www.network54.com/Forum/119419/message/1176251786/

They aren't cheap - probably in the $300-$400 range.  I'm going from memory,
so don't quote me.

Will.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Scott Couchman
Sent: Tuesday, April 10, 2007 9:34 AM
To: asajay at asajay.com; detomaso at realbig.com
Subject: Re: [DeTomaso] Mechanical Fuel Pump

Thanks, if there isn't something special I'm missing here, I'll just go slow
as I tighten. It just seems like this one is much further off than I'm use
to. Maybe it's just the luck of the draw (rotation of the cam). I expect
there to be some gap until I tighten the mounting bolts, this one just
seemed to be off too much. Maybe the electric pump has me spooked a
little......kind of like the turtle on a fence post.....it didn't get there
by itself, and there was probably a reason.

Asa Jay Laughton <asajay at asajay.com> wrote: If the eccentric is in this
position:
http://www.asajay.com/351rebuild/images/engine/gearset_in.jpg

it's going to be harder to install the fuel pump, but not impossible.  
It will just take more leverage.

Asa Jay

Scott Couchman wrote:
> I'm having a problem installing a stock mechanical fuel pump in my '72
#4010. The car had an electric fuel pump when I bought it. I thought this
was interesting but not too concerning. I decided to change it for a stock
mechanical pump. I bought a NAPA pump for a '71 Mustang with a 351
Cleveland, but unfortunately, the pump doesn't fit my Panera. The
flange/bolt hole locations are all fine. The problem is that the pump flange
doesn't fit flush against the flange on the block. It's like the cam lobe is
too large, and the pump arm can't deflect far enough to allow the pump to
sit flush on the block. I know the engine was rebuilt by the owner previous
to the owner I purchased the car from. I'm now suspicious that the electric
pump is there because there was a problem fitting the mechanical pump after
the engine was rebuilt. Any ideas?? Are there cams that fit a Cleveland that
have larger diameter fuel pump lobes?? Are there multiple fuel pumps for a
Cleveland?? Could I just
>  have a model year mismatch problem?? Thanks Scott
>
>        
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