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It has been a bit since I have worked on it, so I'm not completely sure which 2 were spinning, but I'm confident that one of them was the top left (if you looking at the front of the bike/face to face) and since it sounds like I blew it and possibly overtightened them myself, I may just put it...

Thank you for following up. I have not had a chance to pull the cylinder. Only the head. I DID put the torque wrench on the studs to see if they were spinning in the case (after taking off the head). I was under the impression that that was the only way I could assess whether the studs were...

Thank you for the response @power6994. I have the top end off. I DID have one of the cap nuts strip and thought the was the problem. Quickly realized that the threads on the studs AND nuts were not "clean" so I used a tap and die to clean them up. I was very careful and made them perfect...

Been a couple of months (got a couple of busy young kids) but I wanted to update... Couldn't get the vise grips to grab so I put 2-3 nuts on the studs and backed them off against each other. Put a torque wrench on the outer most nut and checked to see if I could get 9 FOOT lbs. 2 are good, 2...

Thank you both for the clarification on the torque specs. I will investigate it further. I will try tightening the studs into the case and see if they "bite". I didn't put any sealant on the cylinder base gasket (only between the cylinder and the head). I put a super thin layer on the gasket...

Pulled it apart last night... it does have a blown head gasket. New kit on its way. After pulling the head, I put the the head stud nuts back on and tightened them to see which one was stripped. They all appear to still be functional (not stripped). Is the best way to check this and confirm...

The bike ran better and a bit cooler (didn't take the temp due to no IR thermometer). Still had a couple of hiccups though. One of my head studs was a little stripped when I put it back together. I got it "tight" but not to specs. So, I used some red RTV gasket sealer on the head gasket...

Update... Loosened the cam chain tensioner/cam chain, rechecked timing and valves. Started right up. Ran great. 15 minutes into the ride, it died again and was smoking from the head (again). Luckily had a friend with me and he suggested we check the temp and see if it really was that hot and...

Wanted to update this post....it's been awhile. Replaced both valves (intake was bent), then reassembled. Rechecked valve lash and timing. Bike started right away and ran great. Rode it for 10-15 min in the neighborhood, then the same/similar problem occurred (see above/smoking and died)...

Thank you lukelaw1. I see/saw that too. The problem I am facing is that those marks are on the exhaust portion of the piston, caused by the exhaust valve. The exhaust valve and guide are in near perfect condition (no bend, no dings, no irregular marks). The bent valve is on the intake valve...

Might be over-doing the thank yous.... but thank you again for your responses. @Robert thran- Piston is in correctly (large indentation on piston up, smaller one down to correspond to each of the valves) AND the spark plug "dent" is on the correct side. Valve guides upon inspection look to be...

Well.... I had a brief chance to dig into the other valve (intake) last night and sure enough... it is bent (not badly....but bent slightly). I will order and replace it. While in there, I also replaced the valve guide seal (exhaust only) and found that my throttle needle wasn't being pushed...

Thank you, Gents! I honestly saw your responses after I worked on the bike today. I tend to get frustrated when I know things are correct, but still second guess myself, so I over-react and overdo things. As I mentioned, I pulled the motor. Today I pulled the head. Didn't notice any "tagging"...

Thank you both. I got ambitious last night and pulled the motor. When I initially had the problems I pulled the plug and used the kickstart to check compression, which it seemed to have. Last night, after pulling the plug and hand-turning the flywheel, and couldn't feel any real compression...

Throwing this out there before I do a bunch of unnecessary repairs and replace things prematurely. Looking for some (more) advice from y'all. I recently got my 72' CT70 running beautifully (started 1st/2nd kick, had good throttle, etc.), BUT after riding it for about 3-4 miles, it sputtered...

Gotcha, Clayton. Thanks for the knowledge. Noted, OLD CT. I appreciate the heads up. Glad I don't need one, then. Enjoying the forum, reading the posts, and learning from y'all. Thanks to everyone. Cheers!

Nice job on the bike! That thing is a beauty!

Yes. I purchased it right after I saw your response. I know how things go when something pops up.... buy it, or I'll wish I had. Really appreciate the tip, Kirrbby. Bike is almost done (if there is such a thing). Finished pics should be coming in the next week or so.

I must have missed that one on ebay. Not sure how. If you're ok with it, I will buy it now. Thank you 👊. Price and condition are fine by me. Cheers, Kirrbby!

Looking for a Candy Yellow Special chain guard for my CT70 '71/'72 CT70. Doesn't need to be perfect, just decent or better. Send pics of what you have and how much you are asking. I am also looking for 2 grab handles and passenger foot pegs for the same bike. Let me know what you have. Thanks.