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Hi all,

I have bought a Honda CB360 from a buddy of mine for $300.00 It's in OK shape and after a few hours of work everything is good to go, except the carbs.

The diaphragms are totally shot! Honda sells new ones for $83.00 each which seems a little high for something that looks like it's made from and old balloon What I want to know is if I can fit a differnt pair of carbs onto this bike? I was looking at CB750 carbs on ebay (CB360 carbs are going for twice as much for half as many) Will they work with a little adaptation? or is there a better choice. maybe off a 650?

has anyone out there had any luck with this type of modification? or should I just bite the bullet and buy the diaphragms?

thank for helping a newbie

-dale

I'd buy the diaphragms - but then again I have the same bike and it's all original which I think will help me move it at a decent price if I ever need to. That price does seem high though. Did you check out oldbikebarn.com?

The more I think about this, the more the choice is clear to me. If you aren't a real experienced mechanic you'll undoubtedly run into problems fitting a different set of carbs onto your bike. And who knows if the new carbs you get will be sorted out correctly? They might need to be rebuilt. they might need to be synched. Hopefully some other folks will post. I have totally rebuilt the carbs for my cb360 and they work perfectly, but I'm not a real seasoned mechanic either. My best guess is that you will be better off getting new parts for the carbs that you already know fit your bike properly.

I would have to agree. If you look at the number on the carbs (or in the tech specs) you may find the same carbs on another bike, but it's doubtful. There's alot to consider - Diameter of carbs, placement of jets and air passages, jet sizes, etc etc.

A few options -
- Buy the parts from honda
- contact the maker of the carbs and see if you can buy parts direct from them (You can do this w/ BMW/ Bing carbs) Usually cheaper that way. Dunno the maker of the carbs on that bike - Probably Mikuni or Keihan
- Go to a bike junkyard and see if they have any that they are willing to sell you. If you do this you may have to just buy the entire rack of carbs, not just the rubbers.

I know it sucks, but this is what older bike ownership is all about. Just ask yourself if this kind of inconvenience is worth not having to make monthly payments (Or having shelled out 5 - 10 grand for a newer bike)

It would seem to me that a similar sized carb, while would provide the proper mixture, would be a bear to fabricate linkages for. The 4 cyl carbs have a whole different linkage setup.

If you can get diaphragms for this at $83 a pop, I'd go for it. A decent pair of carburetors would cost more than this.

Oh come on guys, That's not the ansewer I want to hear! I want someone to tell me the 750 carbs will bolt right on with no trouble and I'll be on my way. And that it will only take 10 minutes to do and that it will make my bike go 180 MPH and get 300 MPG runing on water. And while I'm living in my own little fantasy world I'd like some very large bags of money please.

I guess I should just get the diaphragms and fix my bike.

thanks anyway

-dale

go ahead--the 750 carbs will bolt right up--your financial future means you wont have to worry about gas prices--it will run 212 mph when done.bags of money were shipped to your address today.

Thanks Bob, I haven't received the bags of money yet, although, you may be right, the 750 might really work. I've been talking to some of the bike hobbiests in my area and after compairing the the two carbs it might not be that bad of a re-fit to do. I'm ganna give it a shot and see what happens. Wish me luck, and if things work out I'll let you all know. If they don't work I'll just keep quiet and hope you all forget about it.

-dale

Some of the 750 used slide carbs, not CV. The throttle linkage is on top on these. In theory, though, a single cyclinder on a 750 is about the same displacement as a single cylinder on the 360. So the size should be about right.

You might try a later 750 carb, the 91 up have CV carbs, 34MM, the original 360 are 30 MM. You might find they bog down a little at low RPMs, But then, the 360 Bogs at low RPM's anyway.

Let us know if you do it and how it works out.