Mitch,
Thanks. No black smoke, just a really nasty smell all the time. It did
seem to start in fall. The needle Joe Curto shipped with the carb was
the UVC needle. I assume the UVB isn't going to make that much
difference. The chart didn't make it through. I have you old one
though. I don't know if you finished out your needle testing since then.
Joe
On Sun, 07 Apr 2002 22:56:51 -0400 Mitchel Seff <ms6453@optonline.net>
writes:
> Joe,
> Are you seeing black smoke or do you just smell a rich exhaust odor?
> From what you describe the car is running well except for the smell
> and
> poor mileage. When I put my foot in to it I can watch the fuel gauge
> move. One or two open throttle runs & I swear it's like I have a
> hole in
> the tank. The HD8 can pass allot of fuel if needed & this tank only
> holds 10-12 gal of gas.
> I seem to remember you had moved recently further north in which
> case
> you may be suffering from fuel puddling. The supercharger
> configuration
> does not allow for any water circulation around the carb manifold to
> warm the carb. The HD's ,even in the summer are cold after a
> sustained
> ride at speed. Just the air flow through carb keeps it as cold as a
> refrigerator. I have battled this in temps below 40 degrees. Because
> my
> air intake is now behind my grill it's even worse when in those
> temps.
> Since I live in the north east and drive my car all year round (
> except
> if there's snow on the ground ,I have some compassion) I have been
> working on something for next winter to warm the intake air.
> One of the first things I would do is change to a UVB or UVC needle
> ,
> The changes look minor but made a big drivability change. See
> attached
> chart. All of the carbs I know of were shipped with UT needles.
> My car also runs on the rich side but when leaning it out you run a
> fine
> line to detonation under boost. This set up likes warm weather even
> though cold air is more dense because of the carb arrangement. I too
> have carbon build up at the rear of the plenum around the blow-off
> valve. Haven't been able to figure it out and it hasn't been a
> problem
> since I still see 9lbs of max boost with the stock pulley.
> PS I also use trany fluid in the carb instead of oil. It seems less
> susceptible to thickening than oil in the cold temps & lets the
> piston
> react faster.
>
> --
> Mitch Seff
> 75 TR6
> Oceanside, N.Y.
>
> [demime 0.97c removed an attachment of type image/jpeg which had a
> name of needle chart.jpg]
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