1972 Dodge Colt
Well it didn't go exactly like I expected.
I tried to adjust idle circuits and throttle position at the same time.
Can't do that on a new tune.
I loosened the throttle shaft linkage bars so they were all independent.
Then when through the idle screws many times and used the Uni-Syn to see flow on each carb.
After I got the idle as smooth as I could I re-adjusted the idle crews for Uni-Syn balance.
The re-attached the linkage bars.
It was interesting when they were independent to open the throttle on one carb.
She would spit and pop as the other 4 were sucking on closed throttle bases.
After I had everything hooked up I spun it to around 3 or 4 thousand.
There was a slight stumble till it got on the main jets, then it sounded good.
So I have gone back to just about the baseline jetting when I got the carbs.
I have a different emulsion tubes in, but the tune should be closer to out the box.
The jet changes are easy, I will make a couple of small changes at the track friday night.
The picture is getting to the main and idle jet assemblies.
I did find out I have older version Italian Webers without the air by-pass valves.
And the Uni-Syn is an Edelbrock Equipment Co part!
The instructions tell you how to tune a corvair with dual carbs.
Well it didn't go exactly like I expected.
I tried to adjust idle circuits and throttle position at the same time.
Can't do that on a new tune.
I loosened the throttle shaft linkage bars so they were all independent.
Then when through the idle screws many times and used the Uni-Syn to see flow on each carb.
After I got the idle as smooth as I could I re-adjusted the idle crews for Uni-Syn balance.
The re-attached the linkage bars.
It was interesting when they were independent to open the throttle on one carb.
She would spit and pop as the other 4 were sucking on closed throttle bases.
After I had everything hooked up I spun it to around 3 or 4 thousand.
There was a slight stumble till it got on the main jets, then it sounded good.
So I have gone back to just about the baseline jetting when I got the carbs.
I have a different emulsion tubes in, but the tune should be closer to out the box.
The jet changes are easy, I will make a couple of small changes at the track friday night.
The picture is getting to the main and idle jet assemblies.
I did find out I have older version Italian Webers without the air by-pass valves.
And the Uni-Syn is an Edelbrock Equipment Co part!
The instructions tell you how to tune a corvair with dual carbs.
