[DeTomaso] Jets

[Will Kooiman]

Wow!  Is that to the tires?  What's the rest of the combo?

When we did the dyno day in Houston, we saw very little differences between
2-3 jet sizes.  It took about 6 sizes before the A/F ratio moved.

In one case, we went 10-12 sizes larger, but the A/F was still lean.  We
finally suspected a fuel delivery problem - fuel pump, fuel sock plugged,
even tiny holes in the rubber lines.

On the other hand, I can tell a difference between 64's and 67's in the
primaries on my carb - cruising, not wide-open, with an Autometer A/F gauge.

Another thing I noticed was that if I had the idle circuit too rich, it
would overwhelm the primaries during tip-in.  To clarify:  I'm not running a
choke, so I kept the idle screws a little too rich.  It makes cold starts
easier.  I tried primary jet sizes all over the place.  I even got some
58's.  No matter what I did, it was rich.  Then, I adjusted the idle screws
to max vacuum.  It's only slightly harder to start, but the A/F gauge is
happy, even with 67's.

Will.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Donny Williams
Sent: Tuesday, May 22, 2007 4:05 PM
To: Will Demelo; detomaso at realbig.com
Subject: Re: [DeTomaso] Jets

Thats impressive performance!!!!!   Will- Your going to want to go at least 
2-3 jets sizes higher then what you have.  The difference in on size to the 
next is very  tiny small.   So I am thinking, at least start minumum with 2 
jets sizes and 3 is probably what it needs.

Donny
----- Original Message ----- 
From: "Will Demelo" <wdemelo at cogeco.ca>
To: <detomaso at realbig.com>
Sent: Tuesday, May 22, 2007 1:20 PM
Subject: [DeTomaso] Jets


>I presently have 82H jets on my Demon 750 secondaries. I need to richen it 
>one step.  It was a little lean on the dyno last weekend. What's the next 
>size richer? 83H??  Btw, I got 427 hp with the exhaust on.
> Who's goin to Pocono?
> Will
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