Topic: Carb intake boot: rubber separated from metal

[gsnorcal]

Hi,

I tried a bunch of searches, but I haven't seen this problem before. I popped a carb into the motor to take a measurement. When I pulled it off, the rubber came with it. The rubber is still fairly soft.



Anyone had this before? Is there a fix, or just replacement? I wonder why they separated. I wonder how they were originally bonded.

Thanks,
Dave

[FunJimmy]

Dave

You might be successful bonding it back together with a two-part urethane adhesive, but replacement would give peace of mind that there wont be any air leaks.

[Bodi]

I wondered what was under there. Thanks for the look!
Anyway I would tend to replace it, but it could be glued on like Jimmy says. I would worry that the other identical one might be from the same - possibly bad - batch. Are these new or the originals? I have at least one set of old originals if you need one... rubber is hard compared to new, but they are not threatening to come apart.

[camelman]

Oh man, that sucks.  I'm surprised to see what the metal underneath looks like, and even more surprised that I now realize that people on eBay are selling the metal pieces without the rubber!

I wasted a lot of time with leaking manifold boots on a 350 twin once, and really recommend getting a replacement set unless you can get those bonded back on perfectly.  The frustration of air leaks is not worth it if you dont' have a good remedy.  However, speaking of good bonding remedies, would JB Weld work?

[gsnorcal]

Agreed. The thought of having an air leak messing with getting my freshly rebuilt bike jetted properly is a nightmare.

I'm not in a big hurry since the bike is mid-build. However, over in my thread the guys pointed out that David Silver Spares has reproduction units (which at least one member reports are good quality). They are $52 for a set, compared to $33 each for Honda parts. So, I ordered a set from DSS.

Thanks for the tips and ideas.
Dave