CB550K1 - intake manifolds - Honda quality???

[Erny]

Hi all,

when troubleshooting my k1 mix issue, I was replacing also o rings between manifolds and head and also putting new rubbers between manifolds and carbs.

When I removed manifolds I was quite surprised:
1. pipe that connects to carb#2 (btw the one I still have issue with probablly? rich mix) is machined the way that grooves for insulator rubber are quite deep on one side and almost no grooves on another!!! How this cold pass quality check?? I'm looking for another manifold, see my post in "seeking"

2. "intake holes" inside manifolds are not really centered, I woould understand certain tolerance but this? Looks too much to me. Like that every cylinder will have different conditions for intake. Maybe at the end it does not influence 'standard" engine like this but still
So another reason I'm looking for another 1-2 manifold (3-4 is not perfect too but bit better)

Pics for better understanding attached, your opinions/experiences welcome!



 

[paulbaker1954]

I am sure greater minds than  mine can comment but they dont look like OEM quality to me. The key issue though is are they sealing on the rubber clamps as if not this is going to contribute to your running issues.

Have you tried spraying easy start or carb cleaner around them when running to check for air leaks. If there is a leak you will see the revs temporarily rise.