RE: Fine tuning

[tom hecht <baddd65@xxxxxxxxx>]

maybe this was already mentioned, but how have you set
your accelorator pumps? the holley manual says to set
the gap with the throttle wide open.
to me this is a little to agressive, i back mine down
a little from that, but its worth a try

tom
65 satellite




--- ledman_70@xxxxxxxxxxx wrote:


> Yes, it has vaccum advance, no, I haven't taken a
> reading yet. Wouldn't 
> be the first stick I've chased, though.
> Jeff
> Jim Jablonski wrote:
> > 
> > Well Jeff, I am not trying to throw a stick into
> the woods to get you to 
> > 
> > chase it, and there's smarter folks than me here,
> but here's what I was 
> > thinking ... when accelerating at cruise load
> upward past 1500 RPM, 
> > among other things, you are also relying on vacuum
> advance (if so 
> > equipped).  At wide open throttle (where you say
> there is no issue) it's 
> > 
> > pretty much up to the mechanical advance, given
> the absence of vacuum.
> > 
> > Did the Jeg's unit come with vacuum advance? 
> What's manifold vacuum 
> > reading at 1500 RPM?
> > 
> > Just thoughts ...
> > 
> > Jim Jablonski
> > Royal Oak, Michigan
> > '64 Fury
> > 
> > ledman_70@xxxxxxxxxxx wrote:
> > > 
> > > No, it was a system made for Jegs, I don't
> remember the name. It came 
> > > with distributor, harness, control box, and
> ballast resister for around 
> > > $140. You think maybe something could be faulty
> in it?
> > > Jeff
> > > Jim Jablonski wrote:
> > > > 
> > > > Jeff,
> > > > 
> > > > IMHO, at that RPM, it sounds spark advance
> related.  What's the new 
> > > > ignition system ... Mopar ECU/distributor?
> > > > 
> > > > Jim Jablonski
> > > > Royal Oak, Michigan
> > > > '64 Fury
> > > > 
> > > > ledman_70@xxxxxxxxxxx wrote:
> > > > > 
> > > > > I installed a new 780 Holley and complete
> new electronic ignition in my 
> > > > > 413 in the last 2 months. I've rejetted the
> carb, changed the squirter, 
> > > > > and adjusted the timing and carb till I'm
> blue in the face, but I can't 
> > > > > get rid of the flat spot between 1500-1800
> rpm. When you let the clutch 
> > > > > out and the engine starts to load, that's
> where the flat spot is most 
> > > > > obvious. If you take off agressively, it's
> invisible. The engine has a 
> > > > > 509 Huhges cam, headers, and a 2" carb
> spacer to adapt the Holley to the 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > original cast intake. I can't determine
> what's causing the flat spot, so 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > I don't know which direction to go from
> here...any ideas??? Bueller? 
> > > > > Bueller?
> > > > > 
> > > > > Jeff Adams
> > > > > 64 Polara
> > > 
> > > 
> > > 
> > > Jeff Adams
> > > 64 Polara
> 
> 
> 
> Jeff Adams
> 64 Polara
> 
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