Re: Road Demon update
<email@example.com> wrote in message
> Bill Beyer wrote:
> I still
> > need to tweak the idle mixture a little, it's running fat but overall a
> > nice piece. I was able to get the stock air cleaner fitted back on and
> > only way you can tell once it's installed is if you bend down and peek
> > the front and see the Demon which is cast into the end of the fuel bowl.
> Why hide the Demon? The styling is a strong point, imo.
> About the idle, I gave up on a 625 cfm Road Demon on my C code 289
> after months of rejetting and float bowl adjustments -- yeah and idle
> screw and curb idle too -- failed to lean out the idle to anything
> close to acceptable. Admittedly it was too big a carb for a wimp 289,
> by 150 cfm or so. But that was not the issue at idle; after all I was
> too rich, not too lean.
> Anyway, my two cents is that other posters on the VMF forum who had
> this same problem had been offered a free fix of some sort by BG, as I
> recall some kind of restrictor to install in the idle mixture surface.
> The bad news is that these did not seem to cure the prob either.
> But hey, we're talkin wimpy 289's and 302's -- or in one case a
> Cleveland. So with a 429 your mileage may vary.
> 180 Out
Well after lowering the float levels significantly and a few laps around the
carb adjusting the mixture screws I think I've got it dialed in pretty well.
The idle is noticeably smoother but there's absolutely no stumble off idle.
It took about 1/2 to 3/4 of a turn on the front screws and about a half a
turn on the rears. Both float levels were pretty high from the factory and
took a significant amount of lowering.
I gotta say this carb really woke up this motor. We had our first
significant rain in a month here last night and this beast is a little scary
to drive when the oil starts coming up outta the asphalt. It took extremely
judicious application of the loud pedal to keep the front & rear from
swapping ends. I wasn't driving with an egg under the gas pedal, I was
driving with a soap bubble under there. At 1 point I was doing about 25-30
MPH, I pulled out to pass a car and when I gave it some juice the tires just
lit up without even downshifting. Hadta be a pretty impressive sight to see
that big ol' Galaxie about half sideways comin' down the road.
Speaking of handling I put a set of KYB Gas-A-Just shocks on it this week as
well and they were definitely a good investment. Two thumbs up for these