1981 GS 550 L Carb to Head intake mounts

[Guest]

I don't want to come off as lazy for asking, but I trial and error doesn't seem like the way to go with mounting the carb assembly. Keep in mind I didn't take this bike apart, it came in a few boxes. At first I thought mounting the carb to head manifold was just a matter of turning them 180 from the left to right banks. That would mean the vacuum test port would be on the bottom ( 8 o'clock) for carbs 1 & 2 (left side) and the top ( 2 o'clock ) for carbs 3 & 4 (right side).

That didn't seems to work out well. I had a 2nd idea. The part numbers on bikebandit are different from left to right, unfortunately there aren't any part numbers on physical parts.

What is the correct way to mount the manifolds on the head?

Thanks

[Nessism]

The sync screw holes are on the bottom and angle to the outside of the bike.

Picture134 by nessism, on Flickr

[Murphy67]

OK that helps, Are there unique Left and Right? There must be if there are two part numbers.

[Steve]

Yes. If you look at the parts fiche, it tells you how many of each part you will need.
Each of those part numbers shows a quantity of 2.

.