New World Datsuns...

I dont run chokes on my SUs. They were half a turn rich in the winter. 28 degrees outside, and I could start my car in 1 revolution of the motor, and it would idle, though that idle was 450rpm, it would start and idle fine. Warm idle was 700rpm though so I couldnt have been too far off. I learned I ...

Wayno....I can see you dropped the front SU mixture screw(seat) a tad more....relative to the rear one
This tells me your bushing and or throttle shaft is NFG.....<....leaking air.


Also.....

Flatcat,,,,
"I had 40mm Roadsters on the LZ23 521.
It felt like it was running rich big time.

Unless ...

Well this is quite a lot to bite off and chew. Installing a manifold and tune for running not one but two unknown SUs?

Do you have the choke cables with these?
Are the slides free to move?
Damper oil?

I see they have at least been de-smogged. What's the history on these? What were they run on ...