Message below is copy of message posted to alt.autos.studebaker - car is
a '55 coupe but with a '63 Avanti engine (10.25:1 compression, longer
duration cam than a "regular" 289) T-10 4-speed, and a new Edelbrock
AVS, 3.73:1 limited slip rear, and stock exhaust with turbo-style
mufflers. (I don't know how much of the above is relevant, but I
figured it'd be better to post too much info than not enough) My
question is more general than Studebaker-specific so I figured I'd post
it here as well. I'm trying to start getting this car sorted out so I
can actually drive it, and think I'm going to have to do some rod and
jet tuning, but first I have to set the idle... FWIW "by the book" idle
should be 650 RPM.
(original message follows)
subject says all... was just experimenting with my car today and it
seems to idle smoother and faster on manifold vacuum... I can't get
any more advance on the dist (it's already kicking back when I start
it) and it seems to like it so well that before it is fully warmed up
it'll idle at 800 RPM on the idle ports only (butterflies fully closed)
I did look at a real R1 carburetor and the vacuum port appears to be
tied to the transfer port on that side, so ported is "correct" - just
curious why?
My vacuum numbers still suck (or more correctly, suck weakly) at idle
BTW but I have not played with static timing yet. They are slightly
better with the advance on manifold vacuum however so I don't think
there's anything to be had there.
nate
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