Keep Dellorto DRLA 45s and Bosch 009? Options

[98101]

I suddenly find myself owning 1970 4-cylinder 2.4 with Web hot street Cam idles nicely and pulls hard at WOT. Part throttle response is not great, often with carbs coughing and even backfiring on trailing throttle. My use is mostly street, so I'd like to get this part throttle stuff sorted.

Here's pictures of the stuff that's in there now. I guess that's the infamous Bosch 009 with no vacuum advance and a PerTronix 1847A. The carbs are Dellorto DRLA 45s with short velocity stacks and these tall foam things that don't seal against the air cleaner housings. I'm willing to learn about the carbs but I don't have much confidence in the 009 for running nicely on the street. Please correct me if I'm wrong about any of this stuff.

Also from other threads I gather that switching to EFI such as MicroSquirt would cost $5K or so ... though I'm not ruling this out completely. Correct me if I'm wrong about that.






Is this kind of linkage OK?


Here's the idle you may have seen in another post:

https://www.youtube.com/watch?v=-AC53RRrXOU


Any help you can provide is appreciated!

--Michael in Seattle

[98101]

Once the linkage was dialed in, I started the car, looking forward to it running better than ever. Instead, it ran worse than ever. It wouldn't idle, and sounded like it was running on two cylinders. I was alone (without a remote starter), so couldn't get up from the driver's seat to view the engine running after starting it. The iPad was within reach from the driver's seat, so out of desperation I tried the "TUNE" button on the 123 Ignition app.

I was surprised to discover it *would* idle (though not very well) when I bumped the advance from 12º (at 1000RPM) to 20º.

BEFORE (wouldn't idle):


AFTER (would idle):


Later I found it idled even faster with the advance at 1000RPM at 40º!