1977 CT70 Basket Case

nightgrider

Member
Hi everyone, I’m new to the forum. I recently picked up this ‘77 CT70 basket case and I am planning to get back in service again as a trail bike. I’m not going to do a full restoration, but clean it up and get it back into good working shape. It doesn’t have an engine, but I think I’m going to use a clone engine for now. I sorted through the box of parts that came with the bike and there are a few things that I can use. But the bike is missing a lot. The majority of the wiring is there, minus the lights. Overall the bones look good and should be a fun project.
 

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nightgrider

Member
When I got the bike right side bar on the crash bar/skid plate was bent out about 30 degrees or so (I forgot to take a before pic). I was able straighten it out fairly well. I may give it another go to get it a little more straight. It should clean up nicely for me. I also plan to get the dents out of the fenders to the best of my ability. If it isn't perfect that won't bother me much as I still plan to use it as a trail bike. If it was too nice, I'd feel bad using it.
 

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nightgrider

Member
@Robert thran no worries. Just was wondering. The CHP steel tank seems to be the best price on a gas tank that I've found online. It is good to know the plastic tank works well. If I go that route, I'll need a new gas cap and tank bracket. I believe.
 

nightgrider

Member
In the box of parts that came with my CT70 there was 4 usable handle bars. Of course none of them match. One is the original to the bike or at least correct for the year. Based on images I've seen. But I'm not sure what models the others go to, I know they are earlier handle bars. Due to the integrated levers. Luckily I've already got a set of aftermarket handle bars that I can use.
 

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nightgrider

Member
I worked on the crash bar/skid plate a little more today. I think it got the slightest bit more straight. It really needs a good cleaning has years of dirt and oil on it. It'll clean up nicely for me. Probably start with cleaning off the dirt, then some Scotch Brite or a wire wheel to knock off the rust, then some 000 steel wool. Maybe I'll polish it, if I get real motivated.
 

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nightgrider

Member
Does any one know if the throttle handle bar is supposed to lean like this for a 1977 or is it bent? That is the side of the bike that looks like it was laid down or took a hit based on other items I've seen on the bike. If it was angled a little more straight it would be at the right height for one of my other bars I have. I can probably bend it a little more straight, but if it is supposed to be that way I don't want to mess it up in case I decide to do a full restoration on the bike in the future. Thanks
 

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JHminitrails

Active Member
I would say the RH bar is bent out for sure. The LH side looks not too bad. I know the 1972 K1 bars are slightly tapered out away from each other, and from what I've seen the K2's and up are too. K0's were almost parallel with each other, but much narrower. Be careful if you try and straighten it up on the bike. The cast aluminum handlebar holder isn't the strongest handlebar holder out there. Also the bars are quite soft, especially after years of rust inside has chewed away at the metal, so slow and steady til you get it where you like it. I would try to just get them symmetrical to each other. Crooked, bent or uneven bars annoy the piss out of me on any bike I ride. Lol.
 

nightgrider

Member
Someone has been in these forks before. I haven't took them apart yet, but I know that both are totally bottomed out, the springs look to be missing, and they are turned backwards. On the right side I hope I'd didn't just find a crack, it sure looks like one. I'll have to get everything apart to evaluate it further. Has anyone had any success having a crack like this aluminum brazed or welded? I don't need it to be concours quality, just functional. Or are there any other Hondas that share the same lower fork case? Maybe one of the Chinese DAX lower fork cases would work? Thanks
 

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nightgrider

Member
I wonder if these would work? Are the fork pipes the same diameter on a CT90 and CT70? Use the fork cases from these and the fork pipes from my CT70.

 
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ktheake

Active Member
There is a decent thread on just what you ask just a few below you on k1 and up fork tube interest - you will find a cure -new for your model or there is a decent guy - Kirby- that just may have what you need as well - ifn he has used -
As far as a crack - if it is - it could be welded but the oil could create an issue.
Hope this helps - viewing a diagram of the front forks will assist in knowing the breakdown of parts if present .
 

MountainMini

Active Member
Here is a exploded shock diagram of the 1977 front forks. The springs are external to the pipe for this year. The picture of the CT90 shocks you posted appear to be the type that have springs internal, in the pipe? I would be very cautious about mixing and matching parts in this situation. I would try and source a used good condition CT 70 lower pipe that is compatible for the 1977. Hopefully your uppers are usable and not too worn or damaged around where the seal travels. Give them a good inspection before you fork out a bunch of cash on parts. Have fun with your new project. I have 2-1977’s in my stable.
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