Smog details

[Bambino]

Does anyone know, if I can get a weber carb for my 620 and still do smog??! Or it's not possible and, I'm just stuck with the stock carb. messing up all the time haha

[metalmonkey47]

I don't think you'd pass the NOx emissions with a Weber carb unless your jetting was literally perfect, or a little lean. I've never heard of someone passing smog on a Weber, but I suppose it's possible if the rest of the equipment is in good shape and the carb isn't jetted rich. 

[datsunaholic]

It won't even pass the visual unless it's a CARB certified Weber, which for a Datsun was only the 34DFT + Stock air cleaner.  Good luck finding the 34DFT though, been out of production a while.

[K_trip]

- removed -

[Bambino]

Thank guys, really good info about this.

[Janksun]

I believe you can get a brand new stock carb for these...

[Janksun]

Maybe not. Thought I saw one on eBay the other day.

 

Maybe read through this.

http://community.ratsun.net/topic/57091-passing-smog/

[datzenmike]

You can certainly re-build one, even if you have to mix 'n match parts from several carbs to do so. Carb re-building is not rocket science. Just allow yourself a full morning uninterrupted, lots of work space, take pictures have a quality carb kit and everything ready.

[Janksun]

Carb kits on eBay run like 20-30 bucks

[Seeker > 620 KC]

DZMike, What brand do you consider a high quality carb kit? And what makes it so?

[datzenmike]

Around $30. Should always have an accelerator pump as this is usually the most worn out part and makes the biggest improvement on a carb build. The second biggest improvement is simply cleaning it. Gaskets are usually reusable but good new ones are fine. Should have a new inlet needle valve. Should have thorough instructions (and good pictures) for setting choke un-loader, choke fast idle and best of all thick cardboard float drop adjustment gauges.