Dan,
Check your float levels as that would cause many of your running problems as
I found out when I rebuilt mine. I thought I measured everything just right
but it wasn't right enough. Played with the float levels more and every
thing is fine.
FWIW, I had that problem too on my dad's Holleys. Simple to adjust them
however.
Mike
----- Original Message -----
From: "Dan Neff" <neffster189@yahoo.com>
To: "Roadster Listgroup" <datsun-roadsters@autox.team.net>
Sent: Tuesday, August 28, 2001 12:35 AM
Subject: Re: Grose jets
> Well, I was going to shut up, but on Sun, 26 Aug 2001, datsunmike said:
> >FWIW, I spoke to Joe Curto, "SU Expert," and asked him about "gross"
> >jets and he told me in his years of experience he had far too many
> >problems with them and considers them a nice idea that doesn't work
> >well.
>
> I got my NEW replacement Grose jets today and popped 'em in. While
> they DID eliminate the original (float bowl overflow) problem, the car
> ran poopy! Hard to describe because it wasn't severe. Lumpy acceleration.
> Spazzy low end. Noisier engine -- almost 'rough' but not quite. NOTHING
> like the smooth, quiet, powerful, response I'm getting out of a stock
> jet float lid/assembly! And all I did beyond the swap was (had to)
> adjust the idle mix a hair.
>
> I can only think of a few possible explanations: 1) since I'm
> swapping lid assemblies, maybe the floats have to be adjusted
> differently for Grose jets and I'm running 'em too lean? 2) the jets
> threaded kinda tight; perhaps I'm shearing little slivers of brass
> everytime I screw them in (that was what I originally found jamming
> the steel ball - little brass slivers), 3) the glass/plastic(?) ball is
> too bouncy - causing too much, too fast a fluctuation in gas flow? Or
> 4) Grose jets aren't a good idea for high altitude (6,000ft+) and/or
> my car. or some combination of the above.
>
> Anyway, I'm running stock jets thank-you-very-much (anybody need a
> pair of 2L grose jets with about 30 minutes of use?). I'm glad grose
> jets work for some of you, but am gladder (sic) that there's some
> 'support' for my car not liking them.
>
> And thanks to Mike Koken for the stock jets loan :) !
> Once again, I can say it's running better than it EVER has!!
> (just how much better do these things run anyway? How much more Oomph
> can I nurse outta this thing?? 'course I start to drool when i think of
> what these things must do at sea level - 20% (or so) more O2. You
> flatlanders are sooooo lucky!!)
>
> dan neff '69 2000
> colorado springs, co
> www.wycroc.org
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