new guy here

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Sofa_king42

New Member
First off thank you for all the information here. I recently bought back my old 1978 ct70 from my friend I sold it to years ago. She came home not running. After two night of searching for information here, and a 6pack I tore the engine out, re did as much of the wiring harness as I could, cleaned up all grounds, adjusted the points, new ignition coil ,the proper plug cap and fresh fuel and she's running like a charm. I forgot how much fun these things are. Ill post pictures after work today!
 
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Sofa_king42

New Member
Mike'sMiniTrail said:
Welcome now let's see pictures
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0803171727.jpg
 
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Sofa_king42

New Member
So I took my bike for about a hour and half ride yesterday! Still some things I would like to adjust. I'm not sure if its carburetor issues or clutch needs adjusted. But she bogs quite a bit and struggles with decent hills. I think I got my 500$ worth of fun yesterday alone.
 
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Sofa_king42

New Member
Thanks. I'm going to tear the carb apart later this evening. My manual from chp is being delivered today also. I would like to keep this bike as close to stock appearing as possible but are there any common mods that would increase performance? I do have a xr100 carberatoer laying around if I could adapt that on but I do want a quiet exhaust.
 
Coastal Redneck

Coastal Redneck

120cc
When you drained the old fuel and added the new, did you swap out the fuel filter? Inexpensive part, but it can make a world of difference, and it's sometimes hard to tell whether the old one is worth a damn. Bogging may signify carb issues, but a fuel filter that's even slightly gunked up can compound the problem. Hopefully you're running premium gas in the bike, or something better... try a new fuel filter if you haven't already, check the fuel lines and petcock to ensure there's no obstruction, kink, gunked-up areas, etc. Same for the air filter, clean it or buy a new one, it won't break the bank. Looks like part of the sofa on that seat, but I reckon it goes with yer moniker, LOL.:red70:
 
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69ST

Well-Known Member
The kind of bogging you're taking about sounds like restricted fuel delivery, imo. While you're inside the carb, also clean the emulsion tube. That means running s thin wire, like a wire brush bristle, or inner wire from the twist-tie, through every wall orifice in the emulsion tube. That is the ONLY reliable way to clean them and they can sometimes be incredibly stubborn to open up, even with a wire or jet file (if you have one small enough). I'm not super-familiar with the round-bowl Keihin carbs. If yours has a brass float, verify level and adjust as needed. If it has a plastic float, it is what it is...non-adjustable.

Lastly, check the airbox assembly. Vintage airfilter foam can degrade and become ultra-resitictive. New OEM foam elements are cheap. Also check the inlet side rubber boot. There's a lot of stuff (fuel lines, wiring, spakplug lead) competing for scarce real estate. I've seen a number of bikes that ran like :poop: because the inlet boot had collapsed.
 
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Sofa_king42

New Member
Thanks for the information. I love this little bike. I got a new kick starter and shift lever (chp) installed today along with a new rear tire! Its been a blast working on this old girl. My next quest is some sort of headlight , but it seems easier said then done
 
Coastal Redneck

Coastal Redneck

120cc
motodevo said:
Cool bike, a bit of spit and polish and a new seat cover and that bike would look great. Always liked the black ones, you dont see many
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What, MotoDevo, you don't like that sofa arm cover on the seat??? I could almost live with it, if only it were a different color, LOL. :eek:

Sofa_King, these bikes are usually fun to work on, with an occasional bout of minor frustration when a part you ordered strips out or breaks, LOL. I believe I paid around $500 for my FrankenBike when I first saw it, rode it up and down the street a few times and promptly handed over the C-notes. Dumped a bit more into it later, but I don't regret a penny of it (except those wasted on substandard parts which stripped out or broke). These little bikes are just too much fun... with its mods, my little FrankenBike can take on almost anything a full-sized dirt bike can tackle, and it fits in the back seat of the Camry (or on the cargo carrier which I bought for the pit bike), so no trailer fees or trailer maintenance, LOL. :red70:
 
motodevo

motodevo

Active Member
Sidewinder said:
What, MotoDevo, you don't like that sofa arm cover on the seat??? I could almost live with it, if only it were a different color, LOL. :eek:
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To be honest S.W. the seat cover is TOO classy for my tastes, i like my bikes like i like my women, ridden hard and put away wet!
If it were mine, it would have a duct tape seat, or maybe a heshian sack with duct tape holding on if I was making an effort!
 
Coastal Redneck

Coastal Redneck

120cc
Black duct tape, LOL... ya know, once that bike gets cleaned up, I'm thinking a pimped-out tiger stripe seat would add a touch of... er... something. Maybe go with the biker special, black leather with a mean logo and some silver studs, LOL. :confused:
 
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Sofa_king42

New Member
Sidewinder said:
Black duct tape, LOL... ya know, once that bike gets cleaned up, I'm thinking a pimped-out tiger stripe seat would add a touch of... er... something. Maybe go with the biker special, black leather with a mean logo and some silver studs, LOL. :confused:
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Sorry in not building rob hailford a mini bike haha. I would like to get a similar seat cover to the material my old race quad had, I doubt quadtech makes seat covers for these.
 
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