View Full Version : Parts I need parts I tell you..

03-08-2010, 2:51 PM
Ok, started working on the CB100 and decided im going to try to get it running before I strip it down and repaint everything.. started checking the carb first.. and it was froze solid.. so I worked with it for about a week.. and finally got it free.. but I noticed that the little metal linkage between the float and the needle was rusted off.. so i decided to look for a kit to replace items in it that needed replacing.. to my surprise I cant find one..

any suggestions.. on where I can get parts for this thing.. and before you ask I did check ebay.. but im not a big fan of them I would rather spend my money at a store where I can call them if I have any questions.

thanks guys


03-08-2010, 4:28 PM
I have most everything from two carbs that are off cl175/cb200 bikes. You're welcome to em if you pay for shipping.

03-08-2010, 10:00 PM
I don't have the web site, but there are a couple data bases that I think you can cross reference the parts so you can see which part #s are interchangeable on the CB series. If you don't have it or can't find it let me know and I will dig it up. I'm assuming the 100 is there. I regularly cannibalize my 350 for 750 parts.

~Rev Mike

03-08-2010, 10:27 PM
I have a 68' CT90 and via that have confirmed that they used the same floats/float needles. I think that you should be good with any of the 90/100/125/175/160 shit as long as it's the same carb manufacturererer

03-08-2010, 11:50 PM

Service Honda is a good place to get new parts, but they aren't cheap though (but cheaper than most oem parts places).

03-09-2010, 9:44 AM
I hate to sound like a broken record, but I'd rather save you some trouble than see you fight an old known-issue carb.

Like I responded in your "can you bob a 72 CB100" (http://www.chopcult.com/forum/showthread.php?t=2224&page=3) thread:

A good cleaning goes a long way, however:
The slides on the stock carbs are known to eventually stick.

I ran the stocker for a little while after getting the bike running , but it only lasted a couple hundred miles before the slide started sticking pretty bad. After too much taking apart, cleaning, sanding, and putting back together, I replaced it with a slightly larger carb.

New 30mm carb ($45-) came from here. (http://www.pccmotor.com/30mm-carburetor-honda-crf-xr-100-30100200.html)

The only problem I ran into with the new carb is that it's longer than the stock unit, to the point that it makes contact on the stamped section of the frame and doesn't allow a filter to mount up. I'm just running a pantyhose filter for the time being, which just barely squeezes and zip ties in there.

If I were you, I might try to source a ~24mm in the hopes that it's short enough to run a filter, if you're into that sort of thing. Old small displacement Hondas are pretty tolerant of different diameter carbs.

Good luck, these little bikes can be a shit ton of fun.

03-09-2010, 9:53 AM
As for finding 1970+ Honda parts, I primarily use Mission Motorcycles' parts finder online.

Honda Parts Finder LINK, 1972 CB100 K2 (http://www.missionmotorcycles.com/fiche_select2.asp?category=Motorcycles&make=Honda&year=1972&fveh=2862)
(I see that it's the same fiche system Service Honda uses.)

Anything <1970, use Ohio Cycle.