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Author Topic: CT70 Resto  (Read 4136 times)

Offline clem

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Re: CT70 Resto
« Reply #20 on: Nov 16, 2018, 16:01:25 »
More pics of the head, shift forks and re usable items. Old and "new" head.

Sent from my SAMSUNG-SM-G930A using DO THE TON mobile app

"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline clem

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Re: CT70 Resto
« Reply #21 on: Nov 16, 2018, 16:02:44 »
Few more of the shift forks. Look like one needs to be replaced.

Sent from my SAMSUNG-SM-G930A using DO THE TON mobile app

"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline advCo

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Re: CT70 Resto
« Reply #22 on: Nov 16, 2018, 16:36:30 »
I thought about an 88cc kit since the cylinder is toast and the end of the muffler is stuck in the head. I wound up buying a used head only to find screwdriver marks where a monkey tried to pry the cam chain cover off. I could probably still use it but I'm leaning towards the CHP 88cc kit with the head, cylinder and carb. I was trying to keep it all original Honda but that may not be possible while still doing this for a reasonable price.
The CT's are rad for sure and it seems like they are hard to come by down here. I would like to find another one to do a custom build with a big Chinese motor in it that I won't mind thrashing on some trails. That's kind of the thought I had for a mini trial challenge. Find a cheap bike, get it running and reliable, take it on a long two or three day trail ride while doing some camping. I figured you could earn points for every dollar your bike costs below a set amount then get points for reusing crusty parts, swapping or donating parts to competitors and maybe points for every mile you do on the trail ride before a mechanical failure. The guy with the most points at the end of the ride is crowned Mini Trail Champion.

That would be awesome. And I agree about using Honda parts, I always try to but the aftermarket piston/cylinder kits are so cheap it almost doesn't make sense to use OEM honda and get the cylinder bored, etc. Beatrice Cycles has the CT70 88cc kit on sale for $100 right now. http://dratv.com/88ctalalc7.html

I've been debating whether or not to go with the 88cc on my z50, but since I've never ridden one I'll probably do a hone and rings and save the upgrade for later.

Sucks about the second head, a good welder or some JB could probably fix that  ;D. I wonder if you ran a weld bead around that exhaust collar it would loosen itself up.

Offline clem

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Re: CT70 Resto
« Reply #23 on: Nov 16, 2018, 18:47:46 »
The standard bore OEM Honda cylinder is $115 at Partzilla. That's not bad for the quality. I have an new OEM muffler for it also and from what I've read, it's not much of a performance killer to have the stock exhaust with the 88cc kit. I still have a little time to decide on which way to go. I am just trying to get the bottom end closed back up so that I can mount it in the frame and put the kickstand back on the bike. After that I am going to take it one parts fiche at a time and finish it up. I don't really need a whole lot of parts to finish it but the ones I do need are the more expensive ones like a new seat, tail light/bracket and ignition switch.
"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Online Brodie

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Re: CT70 Resto
« Reply #24 on: Nov 16, 2018, 20:19:19 »
I would recommend the 88cc kit.

Out of my 3 Zeds the 125 is the funnest to ride. The 160 is too much power for the size and the stock 50 is fine to cruise on but any incline has me pushing with my legs as well.
I'm not sure, but don't ask Brodie.

Way to many build and half done projects to list here.
Sr250, Gs750, Z50A, XV1100, A10, Z160A.

Offline canyoncarver

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Re: CT70 Resto
« Reply #25 on: Nov 16, 2018, 23:40:14 »
... The 160 is too much power for the size ...

I did not think this possible.

Offline Luugo86

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Re: CT70 Resto
« Reply #26 on: Nov 17, 2018, 06:31:07 »
I did not think this possible.


  haha I agree
Live to Die, Die to Live

Online Brodie

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Re: CT70 Resto
« Reply #27 on: Nov 18, 2018, 01:23:41 »
Ha yeah that is what I thought. Maybe if I stuck some bigger tyres on but at the moment when you are flying along at 100kph a few cm from the ground and can stand the front wheel up by twisting the throttle quickly it gets a bit sketchy.
I'm not sure, but don't ask Brodie.

Way to many build and half done projects to list here.
Sr250, Gs750, Z50A, XV1100, A10, Z160A.

Offline clem

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Re: CT70 Resto
« Reply #28 on: Nov 26, 2018, 21:56:27 »
More updates: ordered a bunch of parts and got all but one part in. It just happens to be the kickstart shaft on back order and the cases can't be closed up until that's in. Bummer.

Sent from my SAMSUNG-SM-G930A using DO THE TON mobile app
"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline clem

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Re: CT70 Resto
« Reply #29 on: Nov 26, 2018, 22:18:49 »
New parts. I've also noticed over the course of the last few years that this project has sat that Honda is starting to discontinue more parts for these bikes. I must have gotten some of the last rim halves back then. The key switch is still available from Honda so I picked one of those up before they go discontinued also.

Sent from my SAMSUNG-SM-G930A using DO THE TON mobile app
"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30