Identifying sss su carbs

[sick620]

How do you tell the difference between roadster carbs and sss su carbs? I recognize this is a sss intake probably but how do you tell what the carbs are from?

[iceman510]

Post a picture like your second one, but from the other side so we can see the linkage and the bowls.

 

The manifold is as noted definitely an L-series/510 type manifold.

[john510]

Aren't Roadster carbs 46 mm ? And usually the sharp radius at the top of the bell ? That picture looks like 38 mm.

[datzenmike]

SSS carburetors and the 1600 Roadster have only 2 mounting bolts and are 38mm throttle. The SSS carburetors come in round and flattop. The SSS carburetors are mirror image L&R fuel bowls while the 1600 Roadster carburetors are identical. The Roadster 2000 and early Z car SUs have 4 mounting bolts, though I think they will still fit with two bolts. The Z car SUs are 46mm don't remember what the Roadster used on the 2000.

[sick620]

1 hour ago, iceman510 said:

Post a picture like your second one, but from the other side so we can see the linkage and the bowls.

 

The manifold is as noted definitely an L-series/510 type manifold.

[iceman510]

4 hours ago, john510 said:

Aren't Roadster carbs 46 mm ? And usually the sharp radius at the top of the bell ? That picture looks like 38 mm.

Not sure about Roadster, but Z carbs are 46mm.

[iceman510]

3 hours ago, sick620 said:

 

No, no, no.  The other other side.  🤣  Show us the carb opening side (air filter side) but the full assembly, not a closeup.

[john510]

14 minutes ago, iceman510 said:

Not sure about Roadster, but Z carbs are 46mm.

Yes Z cars had 46 mm. And if I remember correctly the linkage turned the opposite direction ? Or am I thinking Roadster again ? 

[iceman510]

Just now, john510 said:

And if I remember correctly the linkage turned the opposite direction ? 

 

Pretty sure you are correct about that.

[sick620]

[datzenmike]

 

Here's my flattop SUs. As I understand it the flattops were used on very late L16SSS and L18SSS.

 

 

On the left one is a large adjusting screw. The hoses are missing but the top on likely went to the stock air filter and the bottom one connected both carburetors. Purpose, unknown. They are usually removed and an aluminum cover plates put on to 'de-smog' them. The red cap is the vacuum advance. This is how it came to me with the choke cables cut just like a wrecking yard in Japan would do when exporting the engine they were on. The intake is marked K14 and has a PCV valve below the blue cap.

 

[Draker]

They look like sss L series carbs. Same set I have on my tan 510.